On 6/28/21 1:02 PM, Andrew Dunstan wrote:
> On 4/24/21 3:14 PM, Alvaro Herrera wrote:
>> On 2021-Apr-24, Andrew Dunstan wrote:
>>
>>> I would like to undertake some housekeeping on PostgresNode.pm.
>>>
>>> 1. OO modules in perl typically don't export anything. We should remove
>>> the export settings. That would mean that clients would have to call
>>> "PostgresNode->get_new_node()" (but see item 2) and
>>> "PostgresNode::get_free_port()" instead of the unadorned calls they use now.
>> +1
>>
>>> 2. There are two constructors, new() and get_new_node(). AFAICT nothing
>>> in our tests uses new(), and they almost certainly shouldn't anyway.
>>> get_new_node() calls new() to do some work, and I'd like to merge these
>>> two. The name of a constructor in perl is conventionally "new" as it is
>>> in many other OO languages, although in perl this can't apply where a
>>> class provides more than one constructor. Still, if we're merging them
>>> then the preference would be to call the merged function "new". Since
>>> we'd proposing to modify the calls anyway (see item 1) this shouldn't
>>> impose a huge extra workload.
>> +1 on "new".  I think we weren't 100% clear on where we wanted it to go
>> initially, but it's now clear that get_new_node() is the constructor,
>> and that new() is merely a helper.  So let's rename them in a sane way.
>>
>>> Another item that needs looking at is the consistent use of Carp.
>>> PostgresNode, TestLib and RecursiveCopy all use the Carp module, but
>>> contain numerous calls to "die" where they should probably have calls to
>>> "croak" or "confess".
>> I wonder if it would make sense to think of PostgresNode as a feeder of
>> sorts to Test::More and the like, so make it use diag(), note(),
>> explain().
>>
>
>
>
> Here is a set of small(ish) patches that does most of the above and then
> some.
>
>
> Patch 1 adds back the '-w' flag to pg_ctl in the start() method. It's
> redundant on modern versions of Postgres but it's harmless, and helps
> with subclassing for older versions where it wasn't the default.
>
> Patch 2 adds a method for altering config files as opposed to just
> appending to them. Again, this helps a lot in subclassing for older
> versions, which can call the parent's init() and then adjust whatever
> doesn't work.
>
> Patch 3 unifies the constructor methods and stops exporting a
> constructor. There is one constructor: PostgresNode::new()
>
> Patch 4 removes what's left of Exporter in PostgresNode, so it becomes a
> pure OO style module.
>
> Patch 5 adds a method for getting the major version string from a
> PostgresVersion object, again useful in subclassing.
>
> Patch 6 adds a method for getting the install_path of a PostgresNode
> object. While not strictly necessary it's consistent with other fields
> that have getter methods. Clients should not pry into the internals of
> objects. Experience has shown this method to be useful.
>
> Patches 7 8 and 9 contain additions to Patch 3 for things that I
> overlooked or that were not present when I originally prepared the
> patches. They would be applied alongside Patch 3, not separately.
>
>
>
> These patches are easily broken by e.g. the addition of a new TAP test
> or the modification of an existing test. So I'm hoping to get these
> added soon. I will add this email to the CF.
>
>


New version with a small change to fix bitrot.


cheers


andrew


--
Andrew Dunstan
EDB: https://www.enterprisedb.com

>From 67df4045e96fcbf446cf01385fcd9501f61f47b7 Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <and...@dunslane.net>
Date: Tue, 18 May 2021 11:33:07 -0400
Subject: [PATCH 1/9] Add -w back to the flags for pg_ctl start in PostgresNode

This is now the default for pg_ctl, but having the flag here explicitly
does no harm and helps with backwards compatibility of the PostgresNode
module.
---
 src/test/perl/PostgresNode.pm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/test/perl/PostgresNode.pm b/src/test/perl/PostgresNode.pm
index ed5b4a1c4b..b39e728ae9 100644
--- a/src/test/perl/PostgresNode.pm
+++ b/src/test/perl/PostgresNode.pm
@@ -805,7 +805,9 @@ sub start
 
 	# Note: We set the cluster_name here, not in postgresql.conf (in
 	# sub init) so that it does not get copied to standbys.
-	$ret = TestLib::system_log('pg_ctl', '-D', $self->data_dir, '-l',
+	# -w is now the default but having it here does no harm and helps
+	# compatibility with older versions.
+	$ret = TestLib::system_log('pg_ctl', '-w', '-D', $self->data_dir, '-l',
 		$self->logfile, '-o', "--cluster-name=$name", 'start');
 
 	if ($ret != 0)
-- 
2.25.4

>From 79f51dcec8ca66f6388d83870bddfdd659348a39 Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <and...@dunslane.net>
Date: Wed, 19 May 2021 08:58:09 -0400
Subject: [PATCH 2/9] Add adjust_conf method to PostgresNode

This method will modify or delete an existing line in the config file
rather than simply appending to the file. This makes adjustment of files
for older versions much simpler and more compact.
---
 src/test/perl/PostgresNode.pm | 49 ++++++++++++++++++++++++++++++++++-
 1 file changed, 48 insertions(+), 1 deletion(-)

diff --git a/src/test/perl/PostgresNode.pm b/src/test/perl/PostgresNode.pm
index b39e728ae9..6dd1e6ac03 100644
--- a/src/test/perl/PostgresNode.pm
+++ b/src/test/perl/PostgresNode.pm
@@ -19,10 +19,13 @@ PostgresNode - class representing PostgreSQL server instance
   # Start the PostgreSQL server
   $node->start();
 
-  # Change a setting and restart
+  # Add a setting and restart
   $node->append_conf('postgresql.conf', 'hot_standby = on');
   $node->restart();
 
+  # Modify or delete an existing setting
+  $node->adjust_conf('postgresql.conf', 'max_wal_senders', '10');
+
   # run a query with psql, like:
   #   echo 'SELECT 1' | psql -qAXt postgres -v ON_ERROR_STOP=1
   $psql_stdout = $node->safe_psql('postgres', 'SELECT 1');
@@ -544,6 +547,50 @@ sub append_conf
 
 =pod
 
+=item $node->adjust_conf(filename, setting, value, skip_equals)
+
+Modify the named config file setting with the value. If the value is undefined,
+instead delete the setting. If the setting is not present no action is taken.
+
+This will write "$setting = $value\n" in place of the existing line,
+unless skip_equals is true, in which case it will  write
+"$setting $value\n". If the value needs to be quoted it is the caller's
+responsibility to do that.
+
+=cut
+
+sub adjust_conf
+{
+	my ($self, $filename, $setting, $value, $skip_equals) = @_;
+
+	my $conffile = $self->data_dir . '/' . $filename;
+
+	my $contents = TestLib::slurp_file($conffile);
+	my @lines    = split(/\n/, $contents);
+	my @result;
+	my $eq = $skip_equals ? '' : '= ';
+	foreach my $line (@lines)
+	{
+		if ($line !~ /^$setting\W/)
+		{
+			push(@result, "$line\n");
+		}
+		elsif (defined $value)
+		{
+			push(@result, "$setting $eq$value\n");
+		}
+	}
+	open my $fh, ">", $conffile
+	  or croak "could not write \"$conffile\": $!";
+	print $fh @result;
+	close $fh;
+
+	chmod($self->group_access() ? 0640 : 0600, $conffile)
+	  or die("unable to set permissions for $conffile");
+}
+
+=pod
+
 =item $node->backup(backup_name)
 
 Create a hot backup with B<pg_basebackup> in subdirectory B<backup_name> of
-- 
2.25.4

>From eedc729947127e039e9e1e8d2fb80fcefdfe910c Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <and...@dunslane.net>
Date: Wed, 19 May 2021 18:11:47 -0400
Subject: [PATCH 3/9] Unify PostgresNode's new() and get_new_node() methods

There is only one constructor now for PostgresNode, with the idiomatic
name 'new'. The method is not exported by the class, and must be called
as "PostgresNode->new('name',[args])". All the TAP tests that use
PostgresNode are modified accordingly. Third party scripts will need
adjusting, which is a fairly mechanical process (I just used a sed
script).
---
 contrib/amcheck/t/001_verify_heapam.pl        |  2 +-
 contrib/auto_explain/t/001_auto_explain.pl    |  2 +-
 contrib/bloom/t/001_wal.pl                    |  4 +-
 contrib/test_decoding/t/001_repl_stats.pl     |  2 +-
 src/bin/pg_amcheck/t/002_nonesuch.pl          |  2 +-
 src/bin/pg_amcheck/t/003_check.pl             |  2 +-
 src/bin/pg_amcheck/t/004_verify_heapam.pl     |  2 +-
 src/bin/pg_amcheck/t/005_opclass_damage.pl    |  2 +-
 src/bin/pg_basebackup/t/010_pg_basebackup.pl  |  4 +-
 src/bin/pg_basebackup/t/020_pg_receivewal.pl  |  2 +-
 src/bin/pg_basebackup/t/030_pg_recvlogical.pl |  2 +-
 src/bin/pg_checksums/t/002_actions.pl         |  2 +-
 .../pg_controldata/t/001_pg_controldata.pl    |  2 +-
 src/bin/pg_ctl/t/002_status.pl                |  2 +-
 src/bin/pg_ctl/t/003_promote.pl               |  6 +-
 src/bin/pg_ctl/t/004_logrotate.pl             |  2 +-
 src/bin/pg_dump/t/002_pg_dump.pl              |  2 +-
 src/bin/pg_dump/t/003_pg_dump_with_server.pl  |  2 +-
 src/bin/pg_dump/t/010_dump_connstr.pl         |  6 +-
 src/bin/pg_resetwal/t/001_basic.pl            |  2 +-
 src/bin/pg_resetwal/t/002_corrupted.pl        |  2 +-
 src/bin/pg_rewind/t/007_standby_source.pl     |  4 +-
 src/bin/pg_rewind/t/008_min_recovery_point.pl |  6 +-
 src/bin/pg_rewind/t/RewindTest.pm             |  4 +-
 src/bin/pg_verifybackup/t/002_algorithm.pl    |  2 +-
 src/bin/pg_verifybackup/t/003_corruption.pl   |  2 +-
 src/bin/pg_verifybackup/t/004_options.pl      |  2 +-
 src/bin/pg_verifybackup/t/006_encoding.pl     |  2 +-
 src/bin/pg_verifybackup/t/007_wal.pl          |  2 +-
 src/bin/pgbench/t/001_pgbench_with_server.pl  |  2 +-
 src/bin/psql/t/010_tab_completion.pl          |  2 +-
 src/bin/scripts/t/010_clusterdb.pl            |  2 +-
 src/bin/scripts/t/011_clusterdb_all.pl        |  2 +-
 src/bin/scripts/t/020_createdb.pl             |  2 +-
 src/bin/scripts/t/040_createuser.pl           |  2 +-
 src/bin/scripts/t/050_dropdb.pl               |  2 +-
 src/bin/scripts/t/070_dropuser.pl             |  2 +-
 src/bin/scripts/t/080_pg_isready.pl           |  2 +-
 src/bin/scripts/t/090_reindexdb.pl            |  2 +-
 src/bin/scripts/t/091_reindexdb_all.pl        |  2 +-
 src/bin/scripts/t/100_vacuumdb.pl             |  2 +-
 src/bin/scripts/t/101_vacuumdb_all.pl         |  2 +-
 src/bin/scripts/t/102_vacuumdb_stages.pl      |  2 +-
 src/bin/scripts/t/200_connstr.pl              |  2 +-
 src/test/authentication/t/001_password.pl     |  2 +-
 src/test/authentication/t/002_saslprep.pl     |  2 +-
 src/test/kerberos/t/001_auth.pl               |  2 +-
 src/test/ldap/t/001_auth.pl                   |  2 +-
 src/test/modules/brin/t/01_workitems.pl       |  2 +-
 src/test/modules/commit_ts/t/001_base.pl      |  2 +-
 src/test/modules/commit_ts/t/002_standby.pl   |  4 +-
 src/test/modules/commit_ts/t/003_standby_2.pl |  4 +-
 src/test/modules/commit_ts/t/004_restart.pl   |  2 +-
 .../libpq_pipeline/t/001_libpq_pipeline.pl    |  2 +-
 .../ssl_passphrase_callback/t/001_testfunc.pl |  2 +-
 .../test_misc/t/001_constraint_validation.pl  |  2 +-
 src/test/modules/test_pg_dump/t/001_base.pl   |  2 +-
 src/test/perl/PostgresNode.pm                 | 80 +++++++------------
 src/test/recovery/t/001_stream_rep.pl         |  6 +-
 src/test/recovery/t/002_archiving.pl          |  6 +-
 src/test/recovery/t/003_recovery_targets.pl   |  8 +-
 src/test/recovery/t/004_timeline_switch.pl    | 10 +--
 src/test/recovery/t/005_replay_delay.pl       |  4 +-
 src/test/recovery/t/006_logical_decoding.pl   |  2 +-
 src/test/recovery/t/007_sync_rep.pl           | 10 +--
 src/test/recovery/t/008_fsm_truncation.pl     |  4 +-
 src/test/recovery/t/009_twophase.pl           |  4 +-
 .../t/010_logical_decoding_timelines.pl       |  4 +-
 src/test/recovery/t/011_crash_recovery.pl     |  2 +-
 src/test/recovery/t/012_subtransactions.pl    |  4 +-
 src/test/recovery/t/013_crash_restart.pl      |  2 +-
 src/test/recovery/t/014_unlogged_reinit.pl    |  2 +-
 src/test/recovery/t/015_promotion_pages.pl    |  4 +-
 src/test/recovery/t/016_min_consistency.pl    |  4 +-
 src/test/recovery/t/017_shm.pl                |  2 +-
 src/test/recovery/t/018_wal_optimize.pl       |  2 +-
 src/test/recovery/t/019_replslot_limit.pl     |  8 +-
 src/test/recovery/t/020_archive_status.pl     |  6 +-
 src/test/recovery/t/021_row_visibility.pl     |  4 +-
 src/test/recovery/t/022_crash_temp_files.pl   |  2 +-
 src/test/recovery/t/023_pitr_prepared_xact.pl |  4 +-
 src/test/recovery/t/024_archive_recovery.pl   |  4 +-
 src/test/ssl/t/001_ssltests.pl                |  2 +-
 src/test/ssl/t/002_scram.pl                   |  2 +-
 src/test/subscription/t/001_rep_changes.pl    |  4 +-
 src/test/subscription/t/002_types.pl          |  4 +-
 src/test/subscription/t/003_constraints.pl    |  4 +-
 src/test/subscription/t/004_sync.pl           |  4 +-
 src/test/subscription/t/005_encoding.pl       |  4 +-
 src/test/subscription/t/006_rewrite.pl        |  4 +-
 src/test/subscription/t/007_ddl.pl            |  4 +-
 src/test/subscription/t/008_diff_schema.pl    |  4 +-
 src/test/subscription/t/009_matviews.pl       |  4 +-
 src/test/subscription/t/010_truncate.pl       |  4 +-
 src/test/subscription/t/011_generated.pl      |  4 +-
 src/test/subscription/t/012_collation.pl      |  4 +-
 src/test/subscription/t/013_partition.pl      |  6 +-
 src/test/subscription/t/014_binary.pl         |  4 +-
 src/test/subscription/t/015_stream.pl         |  4 +-
 src/test/subscription/t/016_stream_subxact.pl |  4 +-
 src/test/subscription/t/017_stream_ddl.pl     |  4 +-
 .../t/018_stream_subxact_abort.pl             |  4 +-
 .../t/019_stream_subxact_ddl_abort.pl         |  4 +-
 src/test/subscription/t/020_messages.pl       |  4 +-
 src/test/subscription/t/100_bugs.pl           | 14 ++--
 105 files changed, 200 insertions(+), 226 deletions(-)

diff --git a/contrib/amcheck/t/001_verify_heapam.pl b/contrib/amcheck/t/001_verify_heapam.pl
index 9bd66c07f4..4f720a7ed0 100644
--- a/contrib/amcheck/t/001_verify_heapam.pl
+++ b/contrib/amcheck/t/001_verify_heapam.pl
@@ -15,7 +15,7 @@ my ($node, $result);
 #
 # Test set-up
 #
-$node = get_new_node('test');
+$node = PostgresNode->new('test');
 $node->init;
 $node->append_conf('postgresql.conf', 'autovacuum=off');
 $node->start;
diff --git a/contrib/auto_explain/t/001_auto_explain.pl b/contrib/auto_explain/t/001_auto_explain.pl
index 9c4f1d0571..1773a37999 100644
--- a/contrib/auto_explain/t/001_auto_explain.pl
+++ b/contrib/auto_explain/t/001_auto_explain.pl
@@ -8,7 +8,7 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 4;
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->append_conf('postgresql.conf',
 	"shared_preload_libraries = 'auto_explain'");
diff --git a/contrib/bloom/t/001_wal.pl b/contrib/bloom/t/001_wal.pl
index 9310af5c3d..55ad35926f 100644
--- a/contrib/bloom/t/001_wal.pl
+++ b/contrib/bloom/t/001_wal.pl
@@ -43,7 +43,7 @@ SELECT * FROM tst WHERE i = 7 AND t = 'e';
 }
 
 # Initialize primary node
-$node_primary = get_new_node('primary');
+$node_primary = PostgresNode->new('primary');
 $node_primary->init(allows_streaming => 1);
 $node_primary->start;
 my $backup_name = 'my_backup';
@@ -52,7 +52,7 @@ my $backup_name = 'my_backup';
 $node_primary->backup($backup_name);
 
 # Create streaming standby linking to primary
-$node_standby = get_new_node('standby');
+$node_standby = PostgresNode->new('standby');
 $node_standby->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
 $node_standby->start;
diff --git a/contrib/test_decoding/t/001_repl_stats.pl b/contrib/test_decoding/t/001_repl_stats.pl
index 2dc5ef5f07..fdef6cb1ff 100644
--- a/contrib/test_decoding/t/001_repl_stats.pl
+++ b/contrib/test_decoding/t/001_repl_stats.pl
@@ -11,7 +11,7 @@ use TestLib;
 use Test::More tests => 2;
 
 # Test set-up
-my $node = get_new_node('test');
+my $node = PostgresNode->new('test');
 $node->init(allows_streaming => 'logical');
 $node->append_conf('postgresql.conf', 'synchronous_commit = on');
 $node->start;
diff --git a/src/bin/pg_amcheck/t/002_nonesuch.pl b/src/bin/pg_amcheck/t/002_nonesuch.pl
index 5f712ee32a..5417959553 100644
--- a/src/bin/pg_amcheck/t/002_nonesuch.pl
+++ b/src/bin/pg_amcheck/t/002_nonesuch.pl
@@ -10,7 +10,7 @@ use Test::More tests => 72;
 
 # Test set-up
 my ($node, $port);
-$node = get_new_node('test');
+$node = PostgresNode->new('test');
 $node->init;
 $node->start;
 $port = $node->port;
diff --git a/src/bin/pg_amcheck/t/003_check.pl b/src/bin/pg_amcheck/t/003_check.pl
index 817eb4e116..f3eb41ce3a 100644
--- a/src/bin/pg_amcheck/t/003_check.pl
+++ b/src/bin/pg_amcheck/t/003_check.pl
@@ -120,7 +120,7 @@ sub perform_all_corruptions()
 }
 
 # Test set-up
-$node = get_new_node('test');
+$node = PostgresNode->new('test');
 $node->init;
 $node->append_conf('postgresql.conf', 'autovacuum=off');
 $node->start;
diff --git a/src/bin/pg_amcheck/t/004_verify_heapam.pl b/src/bin/pg_amcheck/t/004_verify_heapam.pl
index b3a96e8016..e4c0b83a1c 100644
--- a/src/bin/pg_amcheck/t/004_verify_heapam.pl
+++ b/src/bin/pg_amcheck/t/004_verify_heapam.pl
@@ -178,7 +178,7 @@ umask(0077);
 # Set up the node.  Once we create and corrupt the table,
 # autovacuum workers visiting the table could crash the backend.
 # Disable autovacuum so that won't happen.
-my $node = get_new_node('test');
+my $node = PostgresNode->new('test');
 $node->init;
 $node->append_conf('postgresql.conf', 'autovacuum=off');
 
diff --git a/src/bin/pg_amcheck/t/005_opclass_damage.pl b/src/bin/pg_amcheck/t/005_opclass_damage.pl
index b65becae9d..806335375d 100644
--- a/src/bin/pg_amcheck/t/005_opclass_damage.pl
+++ b/src/bin/pg_amcheck/t/005_opclass_damage.pl
@@ -10,7 +10,7 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 5;
 
-my $node = get_new_node('test');
+my $node = PostgresNode->new('test');
 $node->init;
 $node->start;
 
diff --git a/src/bin/pg_basebackup/t/010_pg_basebackup.pl b/src/bin/pg_basebackup/t/010_pg_basebackup.pl
index 74f8c2c739..ecd6a5d374 100644
--- a/src/bin/pg_basebackup/t/010_pg_basebackup.pl
+++ b/src/bin/pg_basebackup/t/010_pg_basebackup.pl
@@ -18,7 +18,7 @@ program_options_handling_ok('pg_basebackup');
 
 my $tempdir = TestLib::tempdir;
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 
 # Set umask so test directories and files are created with default permissions
 umask(0077);
@@ -268,7 +268,7 @@ SKIP:
 	skip "no tar program available", 1
 	  if (!defined $tar || $tar eq '');
 
-	my $node2 = get_new_node('replica');
+	my $node2 = PostgresNode->new('replica');
 
 	# Recover main data directory
 	$node2->init_from_backup($node, 'tarbackup2', tar_program => $tar);
diff --git a/src/bin/pg_basebackup/t/020_pg_receivewal.pl b/src/bin/pg_basebackup/t/020_pg_receivewal.pl
index 158f7d176f..81c49de22e 100644
--- a/src/bin/pg_basebackup/t/020_pg_receivewal.pl
+++ b/src/bin/pg_basebackup/t/020_pg_receivewal.pl
@@ -14,7 +14,7 @@ program_options_handling_ok('pg_receivewal');
 # Set umask so test directories and files are created with default permissions
 umask(0077);
 
-my $primary = get_new_node('primary');
+my $primary = PostgresNode->new('primary');
 $primary->init(allows_streaming => 1);
 $primary->start;
 
diff --git a/src/bin/pg_basebackup/t/030_pg_recvlogical.pl b/src/bin/pg_basebackup/t/030_pg_recvlogical.pl
index bbbf9e21db..fe7fe76295 100644
--- a/src/bin/pg_basebackup/t/030_pg_recvlogical.pl
+++ b/src/bin/pg_basebackup/t/030_pg_recvlogical.pl
@@ -11,7 +11,7 @@ program_help_ok('pg_recvlogical');
 program_version_ok('pg_recvlogical');
 program_options_handling_ok('pg_recvlogical');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 
 # Initialize node without replication settings
 $node->init(allows_streaming => 1, has_archiving => 1);
diff --git a/src/bin/pg_checksums/t/002_actions.pl b/src/bin/pg_checksums/t/002_actions.pl
index af88b94795..a18c104a94 100644
--- a/src/bin/pg_checksums/t/002_actions.pl
+++ b/src/bin/pg_checksums/t/002_actions.pl
@@ -92,7 +92,7 @@ sub check_relation_corruption
 }
 
 # Initialize node with checksums disabled.
-my $node = get_new_node('node_checksum');
+my $node = PostgresNode->new('node_checksum');
 $node->init();
 my $pgdata = $node->data_dir;
 
diff --git a/src/bin/pg_controldata/t/001_pg_controldata.pl b/src/bin/pg_controldata/t/001_pg_controldata.pl
index c3f3aca095..ce31cfbd3b 100644
--- a/src/bin/pg_controldata/t/001_pg_controldata.pl
+++ b/src/bin/pg_controldata/t/001_pg_controldata.pl
@@ -14,7 +14,7 @@ command_fails(['pg_controldata'], 'pg_controldata without arguments fails');
 command_fails([ 'pg_controldata', 'nonexistent' ],
 	'pg_controldata with nonexistent directory fails');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 
 command_like([ 'pg_controldata', $node->data_dir ],
diff --git a/src/bin/pg_ctl/t/002_status.pl b/src/bin/pg_ctl/t/002_status.pl
index e69cb80134..56a06fafa3 100644
--- a/src/bin/pg_ctl/t/002_status.pl
+++ b/src/bin/pg_ctl/t/002_status.pl
@@ -14,7 +14,7 @@ my $tempdir_short = TestLib::tempdir_short;
 command_exit_is([ 'pg_ctl', 'status', '-D', "$tempdir/nonexistent" ],
 	4, 'pg_ctl status with nonexistent directory');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 
 command_exit_is([ 'pg_ctl', 'status', '-D', $node->data_dir ],
diff --git a/src/bin/pg_ctl/t/003_promote.pl b/src/bin/pg_ctl/t/003_promote.pl
index 2d7e2fd5f3..547b3d8893 100644
--- a/src/bin/pg_ctl/t/003_promote.pl
+++ b/src/bin/pg_ctl/t/003_promote.pl
@@ -15,7 +15,7 @@ command_fails_like(
 	qr/directory .* does not exist/,
 	'pg_ctl promote with nonexistent directory');
 
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(allows_streaming => 1);
 
 command_fails_like(
@@ -30,7 +30,7 @@ command_fails_like(
 	qr/not in standby mode/,
 	'pg_ctl promote of primary instance fails');
 
-my $node_standby = get_new_node('standby');
+my $node_standby = PostgresNode->new('standby');
 $node_primary->backup('my_backup');
 $node_standby->init_from_backup($node_primary, 'my_backup',
 	has_streaming => 1);
@@ -47,7 +47,7 @@ ok( $node_standby->poll_query_until(
 	'promoted standby is not in recovery');
 
 # same again with default wait option
-$node_standby = get_new_node('standby2');
+$node_standby = PostgresNode->new('standby2');
 $node_standby->init_from_backup($node_primary, 'my_backup',
 	has_streaming => 1);
 $node_standby->start;
diff --git a/src/bin/pg_ctl/t/004_logrotate.pl b/src/bin/pg_ctl/t/004_logrotate.pl
index 9a0492ae63..fa14b98c7d 100644
--- a/src/bin/pg_ctl/t/004_logrotate.pl
+++ b/src/bin/pg_ctl/t/004_logrotate.pl
@@ -10,7 +10,7 @@ use Test::More tests => 5;
 use Time::HiRes qw(usleep);
 
 # Set up node with logging collector
-my $node = get_new_node('primary');
+my $node = PostgresNode->new('primary');
 $node->init();
 $node->append_conf(
 	'postgresql.conf', qq(
diff --git a/src/bin/pg_dump/t/002_pg_dump.pl b/src/bin/pg_dump/t/002_pg_dump.pl
index 448b1be26c..81a63882e1 100644
--- a/src/bin/pg_dump/t/002_pg_dump.pl
+++ b/src/bin/pg_dump/t/002_pg_dump.pl
@@ -3503,7 +3503,7 @@ my %tests = (
 #########################################
 # Create a PG instance to test actually dumping from
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/pg_dump/t/003_pg_dump_with_server.pl b/src/bin/pg_dump/t/003_pg_dump_with_server.pl
index f9fea9ddcf..ba994aee82 100644
--- a/src/bin/pg_dump/t/003_pg_dump_with_server.pl
+++ b/src/bin/pg_dump/t/003_pg_dump_with_server.pl
@@ -11,7 +11,7 @@ use Test::More tests => 3;
 my $tempdir       = TestLib::tempdir;
 my $tempdir_short = TestLib::tempdir_short;
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 my $port = $node->port;
 
 $node->init;
diff --git a/src/bin/pg_dump/t/010_dump_connstr.pl b/src/bin/pg_dump/t/010_dump_connstr.pl
index 6478894160..c4b60c5d2a 100644
--- a/src/bin/pg_dump/t/010_dump_connstr.pl
+++ b/src/bin/pg_dump/t/010_dump_connstr.pl
@@ -51,7 +51,7 @@ my $dbname4 = 'regression' . generate_ascii_string(203, 255);
 my $src_bootstrap_super = 'regress_postgres';
 my $dst_bootstrap_super = 'boot';
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init(extra =>
 	  [ '-U', $src_bootstrap_super, '--locale=C', '--encoding=LATIN1' ]);
 
@@ -181,7 +181,7 @@ $restore_super =~ s/"//g
 # Restore full dump through psql using environment variables for
 # dbname/user connection parameters
 
-my $envar_node = get_new_node('destination_envar');
+my $envar_node = PostgresNode->new('destination_envar');
 $envar_node->init(
 	extra =>
 	  [ '-U', $dst_bootstrap_super, '--locale=C', '--encoding=LATIN1' ],
@@ -208,7 +208,7 @@ is($stderr, '', 'no dump errors');
 # dbname/user connection parameters.  "\connect dbname=" forgets
 # user/port from command line.
 
-my $cmdline_node = get_new_node('destination_cmdline');
+my $cmdline_node = PostgresNode->new('destination_cmdline');
 $cmdline_node->init(
 	extra =>
 	  [ '-U', $dst_bootstrap_super, '--locale=C', '--encoding=LATIN1' ],
diff --git a/src/bin/pg_resetwal/t/001_basic.pl b/src/bin/pg_resetwal/t/001_basic.pl
index 9c08ade79f..f01a4d2d48 100644
--- a/src/bin/pg_resetwal/t/001_basic.pl
+++ b/src/bin/pg_resetwal/t/001_basic.pl
@@ -12,7 +12,7 @@ program_help_ok('pg_resetwal');
 program_version_ok('pg_resetwal');
 program_options_handling_ok('pg_resetwal');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 
 command_like([ 'pg_resetwal', '-n', $node->data_dir ],
diff --git a/src/bin/pg_resetwal/t/002_corrupted.pl b/src/bin/pg_resetwal/t/002_corrupted.pl
index 954790c28c..ac915ef91f 100644
--- a/src/bin/pg_resetwal/t/002_corrupted.pl
+++ b/src/bin/pg_resetwal/t/002_corrupted.pl
@@ -10,7 +10,7 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 6;
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 
 my $pg_control = $node->data_dir . '/global/pg_control';
diff --git a/src/bin/pg_rewind/t/007_standby_source.pl b/src/bin/pg_rewind/t/007_standby_source.pl
index 44319a8204..2a717f5a2e 100644
--- a/src/bin/pg_rewind/t/007_standby_source.pl
+++ b/src/bin/pg_rewind/t/007_standby_source.pl
@@ -58,13 +58,13 @@ primary_psql("CHECKPOINT");
 #
 # A (primary) <--- B (standby) <--- C (standby)
 $node_a->backup('my_backup');
-$node_b = get_new_node('node_b');
+$node_b = PostgresNode->new('node_b');
 $node_b->init_from_backup($node_a, 'my_backup', has_streaming => 1);
 $node_b->set_standby_mode();
 $node_b->start;
 
 $node_b->backup('my_backup');
-$node_c = get_new_node('node_c');
+$node_c = PostgresNode->new('node_c');
 $node_c->init_from_backup($node_b, 'my_backup', has_streaming => 1);
 $node_c->set_standby_mode();
 $node_c->start;
diff --git a/src/bin/pg_rewind/t/008_min_recovery_point.pl b/src/bin/pg_rewind/t/008_min_recovery_point.pl
index 9ebcbad0d2..7a390f4abd 100644
--- a/src/bin/pg_rewind/t/008_min_recovery_point.pl
+++ b/src/bin/pg_rewind/t/008_min_recovery_point.pl
@@ -40,7 +40,7 @@ use File::Copy;
 
 my $tmp_folder = TestLib::tempdir;
 
-my $node_1 = get_new_node('node_1');
+my $node_1 = PostgresNode->new('node_1');
 $node_1->init(allows_streaming => 1);
 $node_1->append_conf(
 	'postgresql.conf', qq(
@@ -60,11 +60,11 @@ $node_1->safe_psql('postgres', "INSERT INTO public.bar VALUES ('in both')");
 my $backup_name = 'my_backup';
 $node_1->backup($backup_name);
 
-my $node_2 = get_new_node('node_2');
+my $node_2 = PostgresNode->new('node_2');
 $node_2->init_from_backup($node_1, $backup_name, has_streaming => 1);
 $node_2->start;
 
-my $node_3 = get_new_node('node_3');
+my $node_3 = PostgresNode->new('node_3');
 $node_3->init_from_backup($node_1, $backup_name, has_streaming => 1);
 $node_3->start;
 
diff --git a/src/bin/pg_rewind/t/RewindTest.pm b/src/bin/pg_rewind/t/RewindTest.pm
index 938c661afc..367b99a438 100644
--- a/src/bin/pg_rewind/t/RewindTest.pm
+++ b/src/bin/pg_rewind/t/RewindTest.pm
@@ -128,7 +128,7 @@ sub setup_cluster
 
 	# Initialize primary, data checksums are mandatory
 	$node_primary =
-	  get_new_node('primary' . ($extra_name ? "_${extra_name}" : ''));
+	  PostgresNode->new('primary' . ($extra_name ? "_${extra_name}" : ''));
 
 	# Set up pg_hba.conf and pg_ident.conf for the role running
 	# pg_rewind.  This role is used for all the tests, and has
@@ -176,7 +176,7 @@ sub create_standby
 	my $extra_name = shift;
 
 	$node_standby =
-	  get_new_node('standby' . ($extra_name ? "_${extra_name}" : ''));
+	  PostgresNode->new('standby' . ($extra_name ? "_${extra_name}" : ''));
 	$node_primary->backup('my_backup');
 	$node_standby->init_from_backup($node_primary, 'my_backup');
 	my $connstr_primary = $node_primary->connstr();
diff --git a/src/bin/pg_verifybackup/t/002_algorithm.pl b/src/bin/pg_verifybackup/t/002_algorithm.pl
index c2c4c3176a..7dc1af982a 100644
--- a/src/bin/pg_verifybackup/t/002_algorithm.pl
+++ b/src/bin/pg_verifybackup/t/002_algorithm.pl
@@ -12,7 +12,7 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 19;
 
-my $primary = get_new_node('primary');
+my $primary = PostgresNode->new('primary');
 $primary->init(allows_streaming => 1);
 $primary->start;
 
diff --git a/src/bin/pg_verifybackup/t/003_corruption.pl b/src/bin/pg_verifybackup/t/003_corruption.pl
index 682b3b857e..509390f975 100644
--- a/src/bin/pg_verifybackup/t/003_corruption.pl
+++ b/src/bin/pg_verifybackup/t/003_corruption.pl
@@ -12,7 +12,7 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 44;
 
-my $primary = get_new_node('primary');
+my $primary = PostgresNode->new('primary');
 $primary->init(allows_streaming => 1);
 $primary->start;
 
diff --git a/src/bin/pg_verifybackup/t/004_options.pl b/src/bin/pg_verifybackup/t/004_options.pl
index 3f6e84c221..d4210fd293 100644
--- a/src/bin/pg_verifybackup/t/004_options.pl
+++ b/src/bin/pg_verifybackup/t/004_options.pl
@@ -13,7 +13,7 @@ use TestLib;
 use Test::More tests => 25;
 
 # Start up the server and take a backup.
-my $primary = get_new_node('primary');
+my $primary = PostgresNode->new('primary');
 $primary->init(allows_streaming => 1);
 $primary->start;
 my $backup_path = $primary->backup_dir . '/test_options';
diff --git a/src/bin/pg_verifybackup/t/006_encoding.pl b/src/bin/pg_verifybackup/t/006_encoding.pl
index a821d52a6a..c0667b7f43 100644
--- a/src/bin/pg_verifybackup/t/006_encoding.pl
+++ b/src/bin/pg_verifybackup/t/006_encoding.pl
@@ -11,7 +11,7 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 5;
 
-my $primary = get_new_node('primary');
+my $primary = PostgresNode->new('primary');
 $primary->init(allows_streaming => 1);
 $primary->start;
 my $backup_path = $primary->backup_dir . '/test_encoding';
diff --git a/src/bin/pg_verifybackup/t/007_wal.pl b/src/bin/pg_verifybackup/t/007_wal.pl
index 28837b8503..adf60fb755 100644
--- a/src/bin/pg_verifybackup/t/007_wal.pl
+++ b/src/bin/pg_verifybackup/t/007_wal.pl
@@ -13,7 +13,7 @@ use TestLib;
 use Test::More tests => 7;
 
 # Start up the server and take a backup.
-my $primary = get_new_node('primary');
+my $primary = PostgresNode->new('primary');
 $primary->init(allows_streaming => 1);
 $primary->start;
 my $backup_path = $primary->backup_dir . '/test_wal';
diff --git a/src/bin/pgbench/t/001_pgbench_with_server.pl b/src/bin/pgbench/t/001_pgbench_with_server.pl
index 3aa9d5d753..ef53f6b2d9 100644
--- a/src/bin/pgbench/t/001_pgbench_with_server.pl
+++ b/src/bin/pgbench/t/001_pgbench_with_server.pl
@@ -10,7 +10,7 @@ use Test::More;
 use Config;
 
 # start a pgbench specific server
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/psql/t/010_tab_completion.pl b/src/bin/psql/t/010_tab_completion.pl
index 3c58d50118..8695d22545 100644
--- a/src/bin/psql/t/010_tab_completion.pl
+++ b/src/bin/psql/t/010_tab_completion.pl
@@ -34,7 +34,7 @@ if ($@)
 }
 
 # start a new server
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/010_clusterdb.pl b/src/bin/scripts/t/010_clusterdb.pl
index 6d483be143..aae5ea985b 100644
--- a/src/bin/scripts/t/010_clusterdb.pl
+++ b/src/bin/scripts/t/010_clusterdb.pl
@@ -12,7 +12,7 @@ program_help_ok('clusterdb');
 program_version_ok('clusterdb');
 program_options_handling_ok('clusterdb');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/011_clusterdb_all.pl b/src/bin/scripts/t/011_clusterdb_all.pl
index c7e8514fb6..6ba71780de 100644
--- a/src/bin/scripts/t/011_clusterdb_all.pl
+++ b/src/bin/scripts/t/011_clusterdb_all.pl
@@ -8,7 +8,7 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 2;
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/020_createdb.pl b/src/bin/scripts/t/020_createdb.pl
index 7261ebb2ef..3db2f13ae2 100644
--- a/src/bin/scripts/t/020_createdb.pl
+++ b/src/bin/scripts/t/020_createdb.pl
@@ -12,7 +12,7 @@ program_help_ok('createdb');
 program_version_ok('createdb');
 program_options_handling_ok('createdb');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/040_createuser.pl b/src/bin/scripts/t/040_createuser.pl
index 8fdd32d77b..3da8b7ae75 100644
--- a/src/bin/scripts/t/040_createuser.pl
+++ b/src/bin/scripts/t/040_createuser.pl
@@ -12,7 +12,7 @@ program_help_ok('createuser');
 program_version_ok('createuser');
 program_options_handling_ok('createuser');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/050_dropdb.pl b/src/bin/scripts/t/050_dropdb.pl
index 646cb4e82f..b9f0592bca 100644
--- a/src/bin/scripts/t/050_dropdb.pl
+++ b/src/bin/scripts/t/050_dropdb.pl
@@ -12,7 +12,7 @@ program_help_ok('dropdb');
 program_version_ok('dropdb');
 program_options_handling_ok('dropdb');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/070_dropuser.pl b/src/bin/scripts/t/070_dropuser.pl
index cbcb09b0ad..26dadaf4a5 100644
--- a/src/bin/scripts/t/070_dropuser.pl
+++ b/src/bin/scripts/t/070_dropuser.pl
@@ -12,7 +12,7 @@ program_help_ok('dropuser');
 program_version_ok('dropuser');
 program_options_handling_ok('dropuser');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/080_pg_isready.pl b/src/bin/scripts/t/080_pg_isready.pl
index e2e39ea2d4..4f1184953e 100644
--- a/src/bin/scripts/t/080_pg_isready.pl
+++ b/src/bin/scripts/t/080_pg_isready.pl
@@ -14,7 +14,7 @@ program_options_handling_ok('pg_isready');
 
 command_fails(['pg_isready'], 'fails with no server running');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/090_reindexdb.pl b/src/bin/scripts/t/090_reindexdb.pl
index af5bdf352c..541504d8f0 100644
--- a/src/bin/scripts/t/090_reindexdb.pl
+++ b/src/bin/scripts/t/090_reindexdb.pl
@@ -12,7 +12,7 @@ program_help_ok('reindexdb');
 program_version_ok('reindexdb');
 program_options_handling_ok('reindexdb');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/091_reindexdb_all.pl b/src/bin/scripts/t/091_reindexdb_all.pl
index 299b198d15..34174e4d71 100644
--- a/src/bin/scripts/t/091_reindexdb_all.pl
+++ b/src/bin/scripts/t/091_reindexdb_all.pl
@@ -7,7 +7,7 @@ use warnings;
 use PostgresNode;
 use Test::More tests => 2;
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/100_vacuumdb.pl b/src/bin/scripts/t/100_vacuumdb.pl
index 0addc97bf8..0f1e5bb278 100644
--- a/src/bin/scripts/t/100_vacuumdb.pl
+++ b/src/bin/scripts/t/100_vacuumdb.pl
@@ -12,7 +12,7 @@ program_help_ok('vacuumdb');
 program_version_ok('vacuumdb');
 program_options_handling_ok('vacuumdb');
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/101_vacuumdb_all.pl b/src/bin/scripts/t/101_vacuumdb_all.pl
index 504f252748..a60fc79aae 100644
--- a/src/bin/scripts/t/101_vacuumdb_all.pl
+++ b/src/bin/scripts/t/101_vacuumdb_all.pl
@@ -7,7 +7,7 @@ use warnings;
 use PostgresNode;
 use Test::More tests => 2;
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/102_vacuumdb_stages.pl b/src/bin/scripts/t/102_vacuumdb_stages.pl
index 155c77edd9..c15057a763 100644
--- a/src/bin/scripts/t/102_vacuumdb_stages.pl
+++ b/src/bin/scripts/t/102_vacuumdb_stages.pl
@@ -7,7 +7,7 @@ use warnings;
 use PostgresNode;
 use Test::More tests => 4;
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/bin/scripts/t/200_connstr.pl b/src/bin/scripts/t/200_connstr.pl
index b1ceab73bb..f702e32f00 100644
--- a/src/bin/scripts/t/200_connstr.pl
+++ b/src/bin/scripts/t/200_connstr.pl
@@ -23,7 +23,7 @@ my $dbname2 =
 my $dbname3 = generate_ascii_string(130, 192);
 my $dbname4 = generate_ascii_string(193, 255);
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init(extra => [ '--locale=C', '--encoding=LATIN1' ]);
 $node->start;
 
diff --git a/src/test/authentication/t/001_password.pl b/src/test/authentication/t/001_password.pl
index 427a360198..9498c18d7d 100644
--- a/src/test/authentication/t/001_password.pl
+++ b/src/test/authentication/t/001_password.pl
@@ -62,7 +62,7 @@ sub test_role
 }
 
 # Initialize primary node
-my $node = get_new_node('primary');
+my $node = PostgresNode->new('primary');
 $node->init;
 $node->append_conf('postgresql.conf', "log_connections = on\n");
 $node->start;
diff --git a/src/test/authentication/t/002_saslprep.pl b/src/test/authentication/t/002_saslprep.pl
index f080a0ccba..4799e927db 100644
--- a/src/test/authentication/t/002_saslprep.pl
+++ b/src/test/authentication/t/002_saslprep.pl
@@ -62,7 +62,7 @@ sub test_login
 
 # Initialize primary node. Force UTF-8 encoding, so that we can use non-ASCII
 # characters in the passwords below.
-my $node = get_new_node('primary');
+my $node = PostgresNode->new('primary');
 $node->init(extra => [ '--locale=C', '--encoding=UTF8' ]);
 $node->start;
 
diff --git a/src/test/kerberos/t/001_auth.pl b/src/test/kerberos/t/001_auth.pl
index b5594924ca..d6191498f0 100644
--- a/src/test/kerberos/t/001_auth.pl
+++ b/src/test/kerberos/t/001_auth.pl
@@ -167,7 +167,7 @@ END
 
 note "setting up PostgreSQL instance";
 
-my $node = get_new_node('node');
+my $node = PostgresNode->new('node');
 $node->init;
 $node->append_conf(
 	'postgresql.conf', qq{
diff --git a/src/test/ldap/t/001_auth.pl b/src/test/ldap/t/001_auth.pl
index 0ae14e4c85..553041baa2 100644
--- a/src/test/ldap/t/001_auth.pl
+++ b/src/test/ldap/t/001_auth.pl
@@ -153,7 +153,7 @@ system_or_bail 'ldappasswd', '-x', '-y', $ldap_pwfile, '-s', 'secret2',
 
 note "setting up PostgreSQL instance";
 
-my $node = get_new_node('node');
+my $node = PostgresNode->new('node');
 $node->init;
 $node->append_conf('postgresql.conf', "log_connections = on\n");
 $node->start;
diff --git a/src/test/modules/brin/t/01_workitems.pl b/src/test/modules/brin/t/01_workitems.pl
index a4f603a9d5..ea2e2944a1 100644
--- a/src/test/modules/brin/t/01_workitems.pl
+++ b/src/test/modules/brin/t/01_workitems.pl
@@ -10,7 +10,7 @@ use TestLib;
 use Test::More tests => 2;
 use PostgresNode;
 
-my $node = get_new_node('tango');
+my $node = PostgresNode->new('tango');
 $node->init;
 $node->append_conf('postgresql.conf', 'autovacuum_naptime=1s');
 $node->start;
diff --git a/src/test/modules/commit_ts/t/001_base.pl b/src/test/modules/commit_ts/t/001_base.pl
index dd41936658..0c504421d4 100644
--- a/src/test/modules/commit_ts/t/001_base.pl
+++ b/src/test/modules/commit_ts/t/001_base.pl
@@ -10,7 +10,7 @@ use TestLib;
 use Test::More tests => 2;
 use PostgresNode;
 
-my $node = get_new_node('foxtrot');
+my $node = PostgresNode->new('foxtrot');
 $node->init;
 $node->append_conf('postgresql.conf', 'track_commit_timestamp = on');
 $node->start;
diff --git a/src/test/modules/commit_ts/t/002_standby.pl b/src/test/modules/commit_ts/t/002_standby.pl
index 2664b177ec..227eddeda2 100644
--- a/src/test/modules/commit_ts/t/002_standby.pl
+++ b/src/test/modules/commit_ts/t/002_standby.pl
@@ -11,7 +11,7 @@ use Test::More tests => 4;
 use PostgresNode;
 
 my $bkplabel = 'backup';
-my $primary  = get_new_node('primary');
+my $primary  = PostgresNode->new('primary');
 $primary->init(allows_streaming => 1);
 
 $primary->append_conf(
@@ -22,7 +22,7 @@ $primary->append_conf(
 $primary->start;
 $primary->backup($bkplabel);
 
-my $standby = get_new_node('standby');
+my $standby = PostgresNode->new('standby');
 $standby->init_from_backup($primary, $bkplabel, has_streaming => 1);
 $standby->start;
 
diff --git a/src/test/modules/commit_ts/t/003_standby_2.pl b/src/test/modules/commit_ts/t/003_standby_2.pl
index 57ab9b1d46..27c5bfbfb7 100644
--- a/src/test/modules/commit_ts/t/003_standby_2.pl
+++ b/src/test/modules/commit_ts/t/003_standby_2.pl
@@ -11,7 +11,7 @@ use Test::More tests => 4;
 use PostgresNode;
 
 my $bkplabel = 'backup';
-my $primary  = get_new_node('primary');
+my $primary  = PostgresNode->new('primary');
 $primary->init(allows_streaming => 1);
 $primary->append_conf(
 	'postgresql.conf', qq{
@@ -21,7 +21,7 @@ $primary->append_conf(
 $primary->start;
 $primary->backup($bkplabel);
 
-my $standby = get_new_node('standby');
+my $standby = PostgresNode->new('standby');
 $standby->init_from_backup($primary, $bkplabel, has_streaming => 1);
 $standby->start;
 
diff --git a/src/test/modules/commit_ts/t/004_restart.pl b/src/test/modules/commit_ts/t/004_restart.pl
index bc9931944f..5d92c5a2e6 100644
--- a/src/test/modules/commit_ts/t/004_restart.pl
+++ b/src/test/modules/commit_ts/t/004_restart.pl
@@ -8,7 +8,7 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 16;
 
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(allows_streaming => 1);
 $node_primary->append_conf('postgresql.conf', 'track_commit_timestamp = on');
 $node_primary->start;
diff --git a/src/test/modules/libpq_pipeline/t/001_libpq_pipeline.pl b/src/test/modules/libpq_pipeline/t/001_libpq_pipeline.pl
index 4101ef950e..49f211c827 100644
--- a/src/test/modules/libpq_pipeline/t/001_libpq_pipeline.pl
+++ b/src/test/modules/libpq_pipeline/t/001_libpq_pipeline.pl
@@ -9,7 +9,7 @@ use PostgresNode;
 use TestLib;
 use Test::More;
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/test/modules/ssl_passphrase_callback/t/001_testfunc.pl b/src/test/modules/ssl_passphrase_callback/t/001_testfunc.pl
index 1e2455e82f..0a45fc1b75 100644
--- a/src/test/modules/ssl_passphrase_callback/t/001_testfunc.pl
+++ b/src/test/modules/ssl_passphrase_callback/t/001_testfunc.pl
@@ -20,7 +20,7 @@ my $rot13pass = "SbbOnE1";
 
 # see the Makefile for how the certificate and key have been generated
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->append_conf('postgresql.conf',
 	"ssl_passphrase.passphrase = '$rot13pass'");
diff --git a/src/test/modules/test_misc/t/001_constraint_validation.pl b/src/test/modules/test_misc/t/001_constraint_validation.pl
index 3729906c1a..7c1929f805 100644
--- a/src/test/modules/test_misc/t/001_constraint_validation.pl
+++ b/src/test/modules/test_misc/t/001_constraint_validation.pl
@@ -10,7 +10,7 @@ use TestLib;
 use Test::More tests => 42;
 
 # Initialize a test cluster
-my $node = get_new_node('primary');
+my $node = PostgresNode->new('primary');
 $node->init();
 # Turn message level up to DEBUG1 so that we get the messages we want to see
 $node->append_conf('postgresql.conf', 'client_min_messages = DEBUG1');
diff --git a/src/test/modules/test_pg_dump/t/001_base.pl b/src/test/modules/test_pg_dump/t/001_base.pl
index 8511da5169..ea7739d725 100644
--- a/src/test/modules/test_pg_dump/t/001_base.pl
+++ b/src/test/modules/test_pg_dump/t/001_base.pl
@@ -713,7 +713,7 @@ my %tests = (
 #########################################
 # Create a PG instance to test actually dumping from
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 $node->init;
 $node->start;
 
diff --git a/src/test/perl/PostgresNode.pm b/src/test/perl/PostgresNode.pm
index 6dd1e6ac03..2a889065ea 100644
--- a/src/test/perl/PostgresNode.pm
+++ b/src/test/perl/PostgresNode.pm
@@ -11,7 +11,7 @@ PostgresNode - class representing PostgreSQL server instance
 
   use PostgresNode;
 
-  my $node = PostgresNode->get_new_node('mynode');
+  my $node = PostgresNode->new('mynode');
 
   # Create a data directory with initdb
   $node->init();
@@ -61,9 +61,9 @@ PostgresNode - class representing PostgreSQL server instance
   my $ret = $node->backup_fs_cold('testbackup3')
 
   # Restore it to create a new independent node (not a replica)
-  my $replica = get_new_node('replica');
-  $replica->init_from_backup($node, 'testbackup');
-  $replica->start;
+  my $other_node = PostgresNode->new('mycopy');
+  $other_node->init_from_backup($node, 'testbackup');
+  $other_node->start;
 
   # Stop the server
   $node->stop('fast');
@@ -110,7 +110,6 @@ use Time::HiRes qw(usleep);
 use Scalar::Util qw(blessed);
 
 our @EXPORT = qw(
-  get_new_node
   get_free_port
 );
 
@@ -139,41 +138,6 @@ INIT
 
 =over
 
-=item PostgresNode::new($class, $name, $pghost, $pgport)
-
-Create a new PostgresNode instance. Does not initdb or start it.
-
-You should generally prefer to use get_new_node() instead since it takes care
-of finding port numbers, registering instances for cleanup, etc.
-
-=cut
-
-sub new
-{
-	my ($class, $name, $pghost, $pgport) = @_;
-	my $testname = basename($0);
-	$testname =~ s/\.[^.]+$//;
-	my $self = {
-		_port    => $pgport,
-		_host    => $pghost,
-		_basedir => "$TestLib::tmp_check/t_${testname}_${name}_data",
-		_name    => $name,
-		_logfile_generation => 0,
-		_logfile_base       => "$TestLib::log_path/${testname}_${name}",
-		_logfile            => "$TestLib::log_path/${testname}_${name}.log"
-	};
-
-	bless $self, $class;
-	mkdir $self->{_basedir}
-	  or
-	  BAIL_OUT("could not create data directory \"$self->{_basedir}\": $!");
-	$self->dump_info;
-
-	return $self;
-}
-
-=pod
-
 =item $node->port()
 
 Get the port number assigned to the host. This won't necessarily be a TCP port
@@ -1166,15 +1130,13 @@ sub _update_pid
 
 =pod
 
-=item PostgresNode->get_new_node(node_name, %params)
+=item PostgresNode->new(node_name, %params)
 
 Build a new object of class C<PostgresNode> (or of a subclass, if you have
 one), assigning a free port number.  Remembers the node, to prevent its port
 number from being reused for another node, and to ensure that it gets
 shut down when the test script exits.
 
-You should generally use this instead of C<PostgresNode::new(...)>.
-
 =over
 
 =item port => [1,65535]
@@ -1199,15 +1161,11 @@ not provided, Postgres binaries will be found in the caller's PATH.
 
 =back
 
-For backwards compatibility, it is also exported as a standalone function,
-which can only create objects of class C<PostgresNode>.
-
 =cut
 
-sub get_new_node
+sub new
 {
-	my $class = 'PostgresNode';
-	$class = shift if scalar(@_) % 2 != 1;
+	my $class = shift;
 	my ($name, %params) = @_;
 
 	# Select a port.
@@ -1242,14 +1200,30 @@ sub get_new_node
 		}
 	}
 
-	# Lock port number found by creating a new node
-	my $node = $class->new($name, $host, $port);
+	my $testname = basename($0);
+	$testname =~ s/\.[^.]+$//;
+	my $node = {
+		_port    => $port,
+		_host    => $host,
+		_basedir => "$TestLib::tmp_check/t_${testname}_${name}_data",
+		_name    => $name,
+		_logfile_generation => 0,
+		_logfile_base       => "$TestLib::log_path/${testname}_${name}",
+		_logfile            => "$TestLib::log_path/${testname}_${name}.log"
+	};
 
 	if ($params{install_path})
 	{
 		$node->{_install_path} = $params{install_path};
 	}
 
+	bless $node, $class;
+	mkdir $node->{_basedir}
+	  or
+	  BAIL_OUT("could not create data directory \"$node->{_basedir}\": $!");
+
+	$node->dump_info;
+
 	# Add node to list of nodes
 	push(@all_nodes, $node);
 
@@ -1320,7 +1294,7 @@ sub _set_pg_version
 # the remainder are# set. Then the PATH and (DY)LD_LIBRARY_PATH are adjusted
 # if the node's install path is set, and the copy environment is returned.
 #
-# The install path set in get_new_node needs to be a directory containing
+# The install path set in new() needs to be a directory containing
 # bin and lib subdirectories as in a standard PostgreSQL installation, so this
 # can't be used with installations where the bin and lib directories don't have
 # a common parent directory.
@@ -1405,7 +1379,7 @@ sub installed_command
 =item get_free_port()
 
 Locate an unprivileged (high) TCP port that's not currently bound to
-anything.  This is used by get_new_node, and is also exported for use
+anything.  This is used by new(), and is also exported for use
 by test cases that need to start other, non-Postgres servers.
 
 Ports assigned to existing PostgresNode objects are automatically
diff --git a/src/test/recovery/t/001_stream_rep.pl b/src/test/recovery/t/001_stream_rep.pl
index df6fdc20d1..ac581c1c07 100644
--- a/src/test/recovery/t/001_stream_rep.pl
+++ b/src/test/recovery/t/001_stream_rep.pl
@@ -9,7 +9,7 @@ use TestLib;
 use Test::More tests => 49;
 
 # Initialize primary node
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 # A specific role is created to perform some tests related to replication,
 # and it needs proper authentication configuration.
 $node_primary->init(
@@ -22,7 +22,7 @@ my $backup_name = 'my_backup';
 $node_primary->backup($backup_name);
 
 # Create streaming standby linking to primary
-my $node_standby_1 = get_new_node('standby_1');
+my $node_standby_1 = PostgresNode->new('standby_1');
 $node_standby_1->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
 $node_standby_1->start;
@@ -37,7 +37,7 @@ $node_standby_1->backup('my_backup_2');
 $node_primary->start;
 
 # Create second standby node linking to standby 1
-my $node_standby_2 = get_new_node('standby_2');
+my $node_standby_2 = PostgresNode->new('standby_2');
 $node_standby_2->init_from_backup($node_standby_1, $backup_name,
 	has_streaming => 1);
 $node_standby_2->start;
diff --git a/src/test/recovery/t/002_archiving.pl b/src/test/recovery/t/002_archiving.pl
index c675c0886c..ce60159f03 100644
--- a/src/test/recovery/t/002_archiving.pl
+++ b/src/test/recovery/t/002_archiving.pl
@@ -10,7 +10,7 @@ use Test::More tests => 3;
 use File::Copy;
 
 # Initialize primary node, doing archives
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(
 	has_archiving    => 1,
 	allows_streaming => 1);
@@ -23,7 +23,7 @@ $node_primary->start;
 $node_primary->backup($backup_name);
 
 # Initialize standby node from backup, fetching WAL from archives
-my $node_standby = get_new_node('standby');
+my $node_standby = PostgresNode->new('standby');
 $node_standby->init_from_backup($node_primary, $backup_name,
 	has_restoring => 1);
 $node_standby->append_conf('postgresql.conf',
@@ -62,7 +62,7 @@ is($result, qq(1000), 'check content from archives');
 # promoted.
 $node_standby->promote;
 
-my $node_standby2 = get_new_node('standby2');
+my $node_standby2 = PostgresNode->new('standby2');
 $node_standby2->init_from_backup($node_primary, $backup_name,
 	has_restoring => 1);
 $node_standby2->start;
diff --git a/src/test/recovery/t/003_recovery_targets.pl b/src/test/recovery/t/003_recovery_targets.pl
index 84e977bd6d..7bd500ed95 100644
--- a/src/test/recovery/t/003_recovery_targets.pl
+++ b/src/test/recovery/t/003_recovery_targets.pl
@@ -21,7 +21,7 @@ sub test_recovery_standby
 	my $num_rows        = shift;
 	my $until_lsn       = shift;
 
-	my $node_standby = get_new_node($node_name);
+	my $node_standby = PostgresNode->new($node_name);
 	$node_standby->init_from_backup($node_primary, 'my_backup',
 		has_restoring => 1);
 
@@ -50,7 +50,7 @@ sub test_recovery_standby
 }
 
 # Initialize primary node
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(has_archiving => 1, allows_streaming => 1);
 
 # Bump the transaction ID epoch.  This is useful to stress the portability
@@ -136,7 +136,7 @@ test_recovery_standby('LSN', 'standby_5', $node_primary, \@recovery_params,
 test_recovery_standby('multiple overriding settings',
 	'standby_6', $node_primary, \@recovery_params, "3000", $lsn3);
 
-my $node_standby = get_new_node('standby_7');
+my $node_standby = PostgresNode->new('standby_7');
 $node_standby->init_from_backup($node_primary, 'my_backup',
 	has_restoring => 1);
 $node_standby->append_conf(
@@ -156,7 +156,7 @@ ok($logfile =~ qr/multiple recovery targets specified/,
 
 # Check behavior when recovery ends before target is reached
 
-$node_standby = get_new_node('standby_8');
+$node_standby = PostgresNode->new('standby_8');
 $node_standby->init_from_backup(
 	$node_primary, 'my_backup',
 	has_restoring => 1,
diff --git a/src/test/recovery/t/004_timeline_switch.pl b/src/test/recovery/t/004_timeline_switch.pl
index c101980e9e..07b1527043 100644
--- a/src/test/recovery/t/004_timeline_switch.pl
+++ b/src/test/recovery/t/004_timeline_switch.pl
@@ -15,7 +15,7 @@ $ENV{PGDATABASE} = 'postgres';
 # on a new timeline.
 
 # Initialize primary node
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(allows_streaming => 1);
 $node_primary->start;
 
@@ -24,11 +24,11 @@ my $backup_name = 'my_backup';
 $node_primary->backup($backup_name);
 
 # Create two standbys linking to it
-my $node_standby_1 = get_new_node('standby_1');
+my $node_standby_1 = PostgresNode->new('standby_1');
 $node_standby_1->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
 $node_standby_1->start;
-my $node_standby_2 = get_new_node('standby_2');
+my $node_standby_2 = PostgresNode->new('standby_2');
 $node_standby_2->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
 $node_standby_2->start;
@@ -76,7 +76,7 @@ is($result, qq(2000), 'check content of standby 2');
 # when WAL archiving is enabled.
 
 # Initialize primary node
-my $node_primary_2 = get_new_node('primary_2');
+my $node_primary_2 = PostgresNode->new('primary_2');
 $node_primary_2->init(allows_streaming => 1, has_archiving => 1);
 $node_primary_2->append_conf(
 	'postgresql.conf', qq(
@@ -88,7 +88,7 @@ $node_primary_2->start;
 $node_primary_2->backup($backup_name);
 
 # Create standby node
-my $node_standby_3 = get_new_node('standby_3');
+my $node_standby_3 = PostgresNode->new('standby_3');
 $node_standby_3->init_from_backup($node_primary_2, $backup_name,
 	has_streaming => 1);
 
diff --git a/src/test/recovery/t/005_replay_delay.pl b/src/test/recovery/t/005_replay_delay.pl
index bd7ed4e304..aa418dda8f 100644
--- a/src/test/recovery/t/005_replay_delay.pl
+++ b/src/test/recovery/t/005_replay_delay.pl
@@ -10,7 +10,7 @@ use TestLib;
 use Test::More tests => 3;
 
 # Initialize primary node
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(allows_streaming => 1);
 $node_primary->start;
 
@@ -23,7 +23,7 @@ my $backup_name = 'my_backup';
 $node_primary->backup($backup_name);
 
 # Create streaming standby from backup
-my $node_standby = get_new_node('standby');
+my $node_standby = PostgresNode->new('standby');
 my $delay        = 3;
 $node_standby->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
diff --git a/src/test/recovery/t/006_logical_decoding.pl b/src/test/recovery/t/006_logical_decoding.pl
index 827a7b488e..cc116062c2 100644
--- a/src/test/recovery/t/006_logical_decoding.pl
+++ b/src/test/recovery/t/006_logical_decoding.pl
@@ -14,7 +14,7 @@ use Test::More tests => 14;
 use Config;
 
 # Initialize primary node
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(allows_streaming => 1);
 $node_primary->append_conf(
 	'postgresql.conf', qq(
diff --git a/src/test/recovery/t/007_sync_rep.pl b/src/test/recovery/t/007_sync_rep.pl
index 81098dcf00..9d00e17f9f 100644
--- a/src/test/recovery/t/007_sync_rep.pl
+++ b/src/test/recovery/t/007_sync_rep.pl
@@ -49,7 +49,7 @@ sub start_standby_and_wait
 }
 
 # Initialize primary node
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(allows_streaming => 1);
 $node_primary->start;
 my $backup_name = 'primary_backup';
@@ -61,19 +61,19 @@ $node_primary->backup($backup_name);
 # the ordering of each one of them in the WAL sender array of the primary.
 
 # Create standby1 linking to primary
-my $node_standby_1 = get_new_node('standby1');
+my $node_standby_1 = PostgresNode->new('standby1');
 $node_standby_1->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
 start_standby_and_wait($node_primary, $node_standby_1);
 
 # Create standby2 linking to primary
-my $node_standby_2 = get_new_node('standby2');
+my $node_standby_2 = PostgresNode->new('standby2');
 $node_standby_2->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
 start_standby_and_wait($node_primary, $node_standby_2);
 
 # Create standby3 linking to primary
-my $node_standby_3 = get_new_node('standby3');
+my $node_standby_3 = PostgresNode->new('standby3');
 $node_standby_3->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
 start_standby_and_wait($node_primary, $node_standby_3);
@@ -123,7 +123,7 @@ standby3|3|sync),
 start_standby_and_wait($node_primary, $node_standby_1);
 
 # Create standby4 linking to primary
-my $node_standby_4 = get_new_node('standby4');
+my $node_standby_4 = PostgresNode->new('standby4');
 $node_standby_4->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
 $node_standby_4->start;
diff --git a/src/test/recovery/t/008_fsm_truncation.pl b/src/test/recovery/t/008_fsm_truncation.pl
index 14b4b97e9e..b1082546a8 100644
--- a/src/test/recovery/t/008_fsm_truncation.pl
+++ b/src/test/recovery/t/008_fsm_truncation.pl
@@ -12,7 +12,7 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 1;
 
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(allows_streaming => 1);
 
 $node_primary->append_conf(
@@ -28,7 +28,7 @@ autovacuum = off
 $node_primary->start;
 
 $node_primary->backup('primary_backup');
-my $node_standby = get_new_node('standby');
+my $node_standby = PostgresNode->new('standby');
 $node_standby->init_from_backup($node_primary, 'primary_backup',
 	has_streaming => 1);
 $node_standby->start;
diff --git a/src/test/recovery/t/009_twophase.pl b/src/test/recovery/t/009_twophase.pl
index 3ee012226d..78d4ef5b54 100644
--- a/src/test/recovery/t/009_twophase.pl
+++ b/src/test/recovery/t/009_twophase.pl
@@ -29,7 +29,7 @@ sub configure_and_reload
 # Set up two nodes, which will alternately be primary and replication standby.
 
 # Setup london node
-my $node_london = get_new_node("london");
+my $node_london = PostgresNode->new("london");
 $node_london->init(allows_streaming => 1);
 $node_london->append_conf(
 	'postgresql.conf', qq(
@@ -40,7 +40,7 @@ $node_london->start;
 $node_london->backup('london_backup');
 
 # Setup paris node
-my $node_paris = get_new_node('paris');
+my $node_paris = PostgresNode->new('paris');
 $node_paris->init_from_backup($node_london, 'london_backup',
 	has_streaming => 1);
 $node_paris->start;
diff --git a/src/test/recovery/t/010_logical_decoding_timelines.pl b/src/test/recovery/t/010_logical_decoding_timelines.pl
index 12edbf760e..2a9cf3b79c 100644
--- a/src/test/recovery/t/010_logical_decoding_timelines.pl
+++ b/src/test/recovery/t/010_logical_decoding_timelines.pl
@@ -34,7 +34,7 @@ use Scalar::Util qw(blessed);
 my ($stdout, $stderr, $ret);
 
 # Initialize primary node
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(allows_streaming => 1, has_archiving => 1);
 $node_primary->append_conf(
 	'postgresql.conf', q[
@@ -74,7 +74,7 @@ $node_primary->backup_fs_hot($backup_name);
 $node_primary->safe_psql('postgres',
 	q[SELECT pg_create_physical_replication_slot('phys_slot');]);
 
-my $node_replica = get_new_node('replica');
+my $node_replica = PostgresNode->new('replica');
 $node_replica->init_from_backup(
 	$node_primary, $backup_name,
 	has_streaming => 1,
diff --git a/src/test/recovery/t/011_crash_recovery.pl b/src/test/recovery/t/011_crash_recovery.pl
index a26e99500b..72fc603e6d 100644
--- a/src/test/recovery/t/011_crash_recovery.pl
+++ b/src/test/recovery/t/011_crash_recovery.pl
@@ -13,7 +13,7 @@ use Config;
 
 plan tests => 3;
 
-my $node = get_new_node('primary');
+my $node = PostgresNode->new('primary');
 $node->init(allows_streaming => 1);
 $node->start;
 
diff --git a/src/test/recovery/t/012_subtransactions.pl b/src/test/recovery/t/012_subtransactions.pl
index aa84073311..a3655a076b 100644
--- a/src/test/recovery/t/012_subtransactions.pl
+++ b/src/test/recovery/t/012_subtransactions.pl
@@ -10,7 +10,7 @@ use TestLib;
 use Test::More tests => 12;
 
 # Setup primary node
-my $node_primary = get_new_node("primary");
+my $node_primary = PostgresNode->new("primary");
 $node_primary->init(allows_streaming => 1);
 $node_primary->append_conf(
 	'postgresql.conf', qq(
@@ -22,7 +22,7 @@ $node_primary->backup('primary_backup');
 $node_primary->psql('postgres', "CREATE TABLE t_012_tbl (id int)");
 
 # Setup standby node
-my $node_standby = get_new_node('standby');
+my $node_standby = PostgresNode->new('standby');
 $node_standby->init_from_backup($node_primary, 'primary_backup',
 	has_streaming => 1);
 $node_standby->start;
diff --git a/src/test/recovery/t/013_crash_restart.pl b/src/test/recovery/t/013_crash_restart.pl
index 868a50b33d..b5e3457753 100644
--- a/src/test/recovery/t/013_crash_restart.pl
+++ b/src/test/recovery/t/013_crash_restart.pl
@@ -27,7 +27,7 @@ plan tests => 18;
 # is really wrong.
 my $psql_timeout = IPC::Run::timer(60);
 
-my $node = get_new_node('primary');
+my $node = PostgresNode->new('primary');
 $node->init(allows_streaming => 1);
 $node->start();
 
diff --git a/src/test/recovery/t/014_unlogged_reinit.pl b/src/test/recovery/t/014_unlogged_reinit.pl
index b629d549dd..4c22663b64 100644
--- a/src/test/recovery/t/014_unlogged_reinit.pl
+++ b/src/test/recovery/t/014_unlogged_reinit.pl
@@ -12,7 +12,7 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 12;
 
-my $node = get_new_node('main');
+my $node = PostgresNode->new('main');
 
 $node->init;
 $node->start;
diff --git a/src/test/recovery/t/015_promotion_pages.pl b/src/test/recovery/t/015_promotion_pages.pl
index 2b72dc2334..562c4cd3e4 100644
--- a/src/test/recovery/t/015_promotion_pages.pl
+++ b/src/test/recovery/t/015_promotion_pages.pl
@@ -12,7 +12,7 @@ use TestLib;
 use Test::More tests => 1;
 
 # Initialize primary node
-my $alpha = get_new_node('alpha');
+my $alpha = PostgresNode->new('alpha');
 $alpha->init(allows_streaming => 1);
 # Setting wal_log_hints to off is important to get invalid page
 # references.
@@ -25,7 +25,7 @@ $alpha->start;
 
 # setup/start a standby
 $alpha->backup('bkp');
-my $bravo = get_new_node('bravo');
+my $bravo = PostgresNode->new('bravo');
 $bravo->init_from_backup($alpha, 'bkp', has_streaming => 1);
 $bravo->append_conf('postgresql.conf', <<EOF);
 checkpoint_timeout=1h
diff --git a/src/test/recovery/t/016_min_consistency.pl b/src/test/recovery/t/016_min_consistency.pl
index 60ecd3dbe7..23f4c42745 100644
--- a/src/test/recovery/t/016_min_consistency.pl
+++ b/src/test/recovery/t/016_min_consistency.pl
@@ -43,7 +43,7 @@ sub find_largest_lsn
 }
 
 # Initialize primary node
-my $primary = get_new_node('primary');
+my $primary = PostgresNode->new('primary');
 $primary->init(allows_streaming => 1);
 
 # Set shared_buffers to a very low value to enforce discard and flush
@@ -61,7 +61,7 @@ $primary->start;
 
 # setup/start a standby
 $primary->backup('bkp');
-my $standby = get_new_node('standby');
+my $standby = PostgresNode->new('standby');
 $standby->init_from_backup($primary, 'bkp', has_streaming => 1);
 $standby->start;
 
diff --git a/src/test/recovery/t/017_shm.pl b/src/test/recovery/t/017_shm.pl
index 6fe9b97f6e..5548a1556d 100644
--- a/src/test/recovery/t/017_shm.pl
+++ b/src/test/recovery/t/017_shm.pl
@@ -43,7 +43,7 @@ sub log_ipcs
 }
 
 # Node setup.
-my $gnat = PostgresNode->get_new_node('gnat');
+my $gnat = PostgresNode->new('gnat');
 $gnat->init;
 
 # Create a shmem segment that will conflict with gnat's first choice
diff --git a/src/test/recovery/t/018_wal_optimize.pl b/src/test/recovery/t/018_wal_optimize.pl
index 53d9864309..4aa1bf8f54 100644
--- a/src/test/recovery/t/018_wal_optimize.pl
+++ b/src/test/recovery/t/018_wal_optimize.pl
@@ -43,7 +43,7 @@ sub run_wal_optimize
 {
 	my $wal_level = shift;
 
-	my $node = get_new_node("node_$wal_level");
+	my $node = PostgresNode->new("node_$wal_level");
 	$node->init;
 	$node->append_conf(
 		'postgresql.conf', qq(
diff --git a/src/test/recovery/t/019_replslot_limit.pl b/src/test/recovery/t/019_replslot_limit.pl
index d4b9ff705f..f421bd7c90 100644
--- a/src/test/recovery/t/019_replslot_limit.pl
+++ b/src/test/recovery/t/019_replslot_limit.pl
@@ -17,7 +17,7 @@ use Time::HiRes qw(usleep);
 $ENV{PGDATABASE} = 'postgres';
 
 # Initialize primary node, setting wal-segsize to 1MB
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(allows_streaming => 1, extra => ['--wal-segsize=1']);
 $node_primary->append_conf(
 	'postgresql.conf', qq(
@@ -41,7 +41,7 @@ my $backup_name = 'my_backup';
 $node_primary->backup($backup_name);
 
 # Create a standby linking to it using the replication slot
-my $node_standby = get_new_node('standby_1');
+my $node_standby = PostgresNode->new('standby_1');
 $node_standby->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
 $node_standby->append_conf('postgresql.conf', "primary_slot_name = 'rep1'");
@@ -214,7 +214,7 @@ ok($failed, 'check that replication has been broken');
 $node_primary->stop;
 $node_standby->stop;
 
-my $node_primary2 = get_new_node('primary2');
+my $node_primary2 = PostgresNode->new('primary2');
 $node_primary2->init(allows_streaming => 1);
 $node_primary2->append_conf(
 	'postgresql.conf', qq(
@@ -235,7 +235,7 @@ max_slot_wal_keep_size = 0
 ));
 $node_primary2->start;
 
-$node_standby = get_new_node('standby_2');
+$node_standby = PostgresNode->new('standby_2');
 $node_standby->init_from_backup($node_primary2, $backup_name,
 	has_streaming => 1);
 $node_standby->append_conf('postgresql.conf', "primary_slot_name = 'rep1'");
diff --git a/src/test/recovery/t/020_archive_status.pl b/src/test/recovery/t/020_archive_status.pl
index 777bf05274..cea65735a3 100644
--- a/src/test/recovery/t/020_archive_status.pl
+++ b/src/test/recovery/t/020_archive_status.pl
@@ -11,7 +11,7 @@ use TestLib;
 use Test::More tests => 16;
 use Config;
 
-my $primary = get_new_node('primary');
+my $primary = PostgresNode->new('primary');
 $primary->init(
 	has_archiving    => 1,
 	allows_streaming => 1);
@@ -138,7 +138,7 @@ $primary->poll_query_until('postgres',
   or die "Timed out while waiting for archiving to finish";
 
 # Test standby with archive_mode = on.
-my $standby1 = get_new_node('standby');
+my $standby1 = PostgresNode->new('standby');
 $standby1->init_from_backup($primary, 'backup', has_restoring => 1);
 $standby1->append_conf('postgresql.conf', "archive_mode = on");
 my $standby1_data = $standby1->data_dir;
@@ -174,7 +174,7 @@ ok( -f "$standby1_data/$segment_path_2_done",
 # command to fail to persist the .ready files.  Note that this node
 # has inherited the archive command of the previous cold backup that
 # will cause archiving failures.
-my $standby2 = get_new_node('standby2');
+my $standby2 = PostgresNode->new('standby2');
 $standby2->init_from_backup($primary, 'backup', has_restoring => 1);
 $standby2->append_conf('postgresql.conf', 'archive_mode = always');
 my $standby2_data = $standby2->data_dir;
diff --git a/src/test/recovery/t/021_row_visibility.pl b/src/test/recovery/t/021_row_visibility.pl
index fcff0a2feb..7f40977976 100644
--- a/src/test/recovery/t/021_row_visibility.pl
+++ b/src/test/recovery/t/021_row_visibility.pl
@@ -12,7 +12,7 @@ use Test::More tests => 10;
 use Config;
 
 # Initialize primary node
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(allows_streaming => 1);
 $node_primary->append_conf('postgresql.conf', 'max_prepared_transactions=10');
 $node_primary->start;
@@ -26,7 +26,7 @@ my $backup_name = 'my_backup';
 $node_primary->backup($backup_name);
 
 # Create streaming standby from backup
-my $node_standby = get_new_node('standby');
+my $node_standby = PostgresNode->new('standby');
 $node_standby->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
 $node_standby->append_conf('postgresql.conf', 'max_prepared_transactions=10');
diff --git a/src/test/recovery/t/022_crash_temp_files.pl b/src/test/recovery/t/022_crash_temp_files.pl
index 157ddba8cf..cc8c8664e2 100644
--- a/src/test/recovery/t/022_crash_temp_files.pl
+++ b/src/test/recovery/t/022_crash_temp_files.pl
@@ -26,7 +26,7 @@ else
 # is really wrong.
 my $psql_timeout = IPC::Run::timer(60);
 
-my $node = get_new_node('node_crash');
+my $node = PostgresNode->new('node_crash');
 $node->init();
 $node->start();
 
diff --git a/src/test/recovery/t/023_pitr_prepared_xact.pl b/src/test/recovery/t/023_pitr_prepared_xact.pl
index 9190a38f93..a1ff97d070 100644
--- a/src/test/recovery/t/023_pitr_prepared_xact.pl
+++ b/src/test/recovery/t/023_pitr_prepared_xact.pl
@@ -10,7 +10,7 @@ use Test::More tests => 1;
 use File::Compare;
 
 # Initialize and start primary node with WAL archiving
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 $node_primary->init(has_archiving => 1, allows_streaming => 1);
 $node_primary->append_conf(
 	'postgresql.conf', qq{
@@ -24,7 +24,7 @@ $node_primary->backup($backup_name);
 # Initialize node for PITR targeting a very specific restore point, just
 # after a PREPARE TRANSACTION is issued so as we finish with a promoted
 # node where this 2PC transaction needs an explicit COMMIT PREPARED.
-my $node_pitr = get_new_node('node_pitr');
+my $node_pitr = PostgresNode->new('node_pitr');
 $node_pitr->init_from_backup(
 	$node_primary, $backup_name,
 	standby       => 0,
diff --git a/src/test/recovery/t/024_archive_recovery.pl b/src/test/recovery/t/024_archive_recovery.pl
index f06ed8c8a1..32be5c4251 100644
--- a/src/test/recovery/t/024_archive_recovery.pl
+++ b/src/test/recovery/t/024_archive_recovery.pl
@@ -11,7 +11,7 @@ use Time::HiRes qw(usleep);
 
 # Initialize and start node with wal_level = replica and WAL archiving
 # enabled.
-my $node = get_new_node('orig');
+my $node = PostgresNode->new('orig');
 $node->init(has_archiving => 1, allows_streaming => 1);
 my $replica_config = q[
 wal_level = replica
@@ -66,7 +66,7 @@ sub test_recovery_wal_level_minimal
 {
 	my ($node_name, $node_text, $standby_setting) = @_;
 
-	my $recovery_node = get_new_node($node_name);
+	my $recovery_node = PostgresNode->new($node_name);
 	$recovery_node->init_from_backup(
 		$node, $backup_name,
 		has_restoring => 1,
diff --git a/src/test/ssl/t/001_ssltests.pl b/src/test/ssl/t/001_ssltests.pl
index 44daefb002..3bc711f4a7 100644
--- a/src/test/ssl/t/001_ssltests.pl
+++ b/src/test/ssl/t/001_ssltests.pl
@@ -64,7 +64,7 @@ push @keys, 'client_wrongperms';
 #### Set up the server.
 
 note "setting up data directory";
-my $node = get_new_node('primary');
+my $node = PostgresNode->new('primary');
 $node->init;
 
 # PGHOST is enforced here to set up the node, subsequent connections
diff --git a/src/test/ssl/t/002_scram.pl b/src/test/ssl/t/002_scram.pl
index 9143fa515f..1dfa2b91f3 100644
--- a/src/test/ssl/t/002_scram.pl
+++ b/src/test/ssl/t/002_scram.pl
@@ -38,7 +38,7 @@ my $common_connstr;
 # Set up the server.
 
 note "setting up data directory";
-my $node = get_new_node('primary');
+my $node = PostgresNode->new('primary');
 $node->init;
 
 # PGHOST is enforced here to set up the node, subsequent connections
diff --git a/src/test/subscription/t/001_rep_changes.pl b/src/test/subscription/t/001_rep_changes.pl
index dee5f5c30a..0c84d87873 100644
--- a/src/test/subscription/t/001_rep_changes.pl
+++ b/src/test/subscription/t/001_rep_changes.pl
@@ -9,12 +9,12 @@ use TestLib;
 use Test::More tests => 32;
 
 # Initialize publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/002_types.pl b/src/test/subscription/t/002_types.pl
index 96669f869b..420876099a 100644
--- a/src/test/subscription/t/002_types.pl
+++ b/src/test/subscription/t/002_types.pl
@@ -10,12 +10,12 @@ use TestLib;
 use Test::More tests => 4;
 
 # Initialize publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/003_constraints.pl b/src/test/subscription/t/003_constraints.pl
index 1182a1288c..3767d24f92 100644
--- a/src/test/subscription/t/003_constraints.pl
+++ b/src/test/subscription/t/003_constraints.pl
@@ -9,12 +9,12 @@ use TestLib;
 use Test::More tests => 6;
 
 # Initialize publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/004_sync.pl b/src/test/subscription/t/004_sync.pl
index b3c91af21d..f07c306e5b 100644
--- a/src/test/subscription/t/004_sync.pl
+++ b/src/test/subscription/t/004_sync.pl
@@ -9,12 +9,12 @@ use TestLib;
 use Test::More tests => 8;
 
 # Initialize publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->append_conf('postgresql.conf',
 	"wal_retrieve_retry_interval = 1ms");
diff --git a/src/test/subscription/t/005_encoding.pl b/src/test/subscription/t/005_encoding.pl
index a3f56a452f..9df474beb5 100644
--- a/src/test/subscription/t/005_encoding.pl
+++ b/src/test/subscription/t/005_encoding.pl
@@ -8,13 +8,13 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 1;
 
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(
 	allows_streaming => 'logical',
 	extra            => [ '--locale=C', '--encoding=UTF8' ]);
 $node_publisher->start;
 
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(
 	allows_streaming => 'logical',
 	extra            => [ '--locale=C', '--encoding=LATIN1' ]);
diff --git a/src/test/subscription/t/006_rewrite.pl b/src/test/subscription/t/006_rewrite.pl
index 37e05a401a..ec4d641230 100644
--- a/src/test/subscription/t/006_rewrite.pl
+++ b/src/test/subscription/t/006_rewrite.pl
@@ -8,11 +8,11 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 2;
 
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/007_ddl.pl b/src/test/subscription/t/007_ddl.pl
index dd10d5cffa..1a3a1dcf14 100644
--- a/src/test/subscription/t/007_ddl.pl
+++ b/src/test/subscription/t/007_ddl.pl
@@ -8,11 +8,11 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 1;
 
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/008_diff_schema.pl b/src/test/subscription/t/008_diff_schema.pl
index a04a798a18..3af3d25604 100644
--- a/src/test/subscription/t/008_diff_schema.pl
+++ b/src/test/subscription/t/008_diff_schema.pl
@@ -9,12 +9,12 @@ use TestLib;
 use Test::More tests => 5;
 
 # Create publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/009_matviews.pl b/src/test/subscription/t/009_matviews.pl
index 92c7d18be8..2e7d0d4413 100644
--- a/src/test/subscription/t/009_matviews.pl
+++ b/src/test/subscription/t/009_matviews.pl
@@ -8,11 +8,11 @@ use PostgresNode;
 use TestLib;
 use Test::More tests => 1;
 
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/010_truncate.pl b/src/test/subscription/t/010_truncate.pl
index 5617469a2c..0e6ecf9c2f 100644
--- a/src/test/subscription/t/010_truncate.pl
+++ b/src/test/subscription/t/010_truncate.pl
@@ -10,11 +10,11 @@ use Test::More tests => 14;
 
 # setup
 
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->append_conf('postgresql.conf',
 	qq(max_logical_replication_workers = 6));
diff --git a/src/test/subscription/t/011_generated.pl b/src/test/subscription/t/011_generated.pl
index 29108cbcf2..a8e7fbd9da 100644
--- a/src/test/subscription/t/011_generated.pl
+++ b/src/test/subscription/t/011_generated.pl
@@ -10,11 +10,11 @@ use Test::More tests => 2;
 
 # setup
 
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/012_collation.pl b/src/test/subscription/t/012_collation.pl
index 8137a165ee..0987391188 100644
--- a/src/test/subscription/t/012_collation.pl
+++ b/src/test/subscription/t/012_collation.pl
@@ -18,13 +18,13 @@ else
 	plan skip_all => 'ICU not supported by this build';
 }
 
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(
 	allows_streaming => 'logical',
 	extra            => [ '--locale=C', '--encoding=UTF8' ]);
 $node_publisher->start;
 
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(
 	allows_streaming => 'logical',
 	extra            => [ '--locale=C', '--encoding=UTF8' ]);
diff --git a/src/test/subscription/t/013_partition.pl b/src/test/subscription/t/013_partition.pl
index 3478e4db8f..c89d495221 100644
--- a/src/test/subscription/t/013_partition.pl
+++ b/src/test/subscription/t/013_partition.pl
@@ -10,15 +10,15 @@ use Test::More tests => 62;
 
 # setup
 
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
-my $node_subscriber1 = get_new_node('subscriber1');
+my $node_subscriber1 = PostgresNode->new('subscriber1');
 $node_subscriber1->init(allows_streaming => 'logical');
 $node_subscriber1->start;
 
-my $node_subscriber2 = get_new_node('subscriber2');
+my $node_subscriber2 = PostgresNode->new('subscriber2');
 $node_subscriber2->init(allows_streaming => 'logical');
 $node_subscriber2->start;
 
diff --git a/src/test/subscription/t/014_binary.pl b/src/test/subscription/t/014_binary.pl
index 7260378f5e..4e8aeb2e41 100644
--- a/src/test/subscription/t/014_binary.pl
+++ b/src/test/subscription/t/014_binary.pl
@@ -10,12 +10,12 @@ use TestLib;
 use Test::More tests => 5;
 
 # Create and initialize a publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
 # Create and initialize subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/015_stream.pl b/src/test/subscription/t/015_stream.pl
index 6cc8b4a8d2..da6761f81e 100644
--- a/src/test/subscription/t/015_stream.pl
+++ b/src/test/subscription/t/015_stream.pl
@@ -9,14 +9,14 @@ use TestLib;
 use Test::More tests => 4;
 
 # Create publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->append_conf('postgresql.conf',
 	'logical_decoding_work_mem = 64kB');
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/016_stream_subxact.pl b/src/test/subscription/t/016_stream_subxact.pl
index 0245b0685b..4aae98a66e 100644
--- a/src/test/subscription/t/016_stream_subxact.pl
+++ b/src/test/subscription/t/016_stream_subxact.pl
@@ -9,14 +9,14 @@ use TestLib;
 use Test::More tests => 2;
 
 # Create publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->append_conf('postgresql.conf',
 	'logical_decoding_work_mem = 64kB');
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/017_stream_ddl.pl b/src/test/subscription/t/017_stream_ddl.pl
index 35b146827d..50bd6e3117 100644
--- a/src/test/subscription/t/017_stream_ddl.pl
+++ b/src/test/subscription/t/017_stream_ddl.pl
@@ -9,14 +9,14 @@ use TestLib;
 use Test::More tests => 3;
 
 # Create publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->append_conf('postgresql.conf',
 	'logical_decoding_work_mem = 64kB');
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/018_stream_subxact_abort.pl b/src/test/subscription/t/018_stream_subxact_abort.pl
index 7fc60b5bde..63fe248a04 100644
--- a/src/test/subscription/t/018_stream_subxact_abort.pl
+++ b/src/test/subscription/t/018_stream_subxact_abort.pl
@@ -9,14 +9,14 @@ use TestLib;
 use Test::More tests => 4;
 
 # Create publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->append_conf('postgresql.conf',
 	'logical_decoding_work_mem = 64kB');
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/019_stream_subxact_ddl_abort.pl b/src/test/subscription/t/019_stream_subxact_ddl_abort.pl
index 81149b86a9..176a702486 100644
--- a/src/test/subscription/t/019_stream_subxact_ddl_abort.pl
+++ b/src/test/subscription/t/019_stream_subxact_ddl_abort.pl
@@ -10,14 +10,14 @@ use TestLib;
 use Test::More tests => 2;
 
 # Create publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->append_conf('postgresql.conf',
 	'logical_decoding_work_mem = 64kB');
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/020_messages.pl b/src/test/subscription/t/020_messages.pl
index 0e218e0048..ecf9b192a3 100644
--- a/src/test/subscription/t/020_messages.pl
+++ b/src/test/subscription/t/020_messages.pl
@@ -9,13 +9,13 @@ use TestLib;
 use Test::More tests => 5;
 
 # Create publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->append_conf('postgresql.conf', 'autovacuum = off');
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
diff --git a/src/test/subscription/t/100_bugs.pl b/src/test/subscription/t/100_bugs.pl
index 21eabceb2f..baa4a90771 100644
--- a/src/test/subscription/t/100_bugs.pl
+++ b/src/test/subscription/t/100_bugs.pl
@@ -19,11 +19,11 @@ use Test::More tests => 5;
 # fix was to avoid the constant expressions simplification in
 # RelationGetIndexAttrBitmap(), so it's safe to call in more contexts.
 
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->start;
 
@@ -81,7 +81,7 @@ $node_subscriber->stop('fast');
 # identity set before accepting updates.  If it did not it would cause
 # an error when an update was attempted.
 
-$node_publisher = get_new_node('publisher2');
+$node_publisher = PostgresNode->new('publisher2');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->start;
 
@@ -108,7 +108,7 @@ $node_publisher->stop('fast');
 #
 # Initial sync doesn't complete; the protocol was not being followed per
 # expectations after commit 07082b08cc5d.
-my $node_twoways = get_new_node('twoways');
+my $node_twoways = PostgresNode->new('twoways');
 $node_twoways->init(allows_streaming => 'logical');
 $node_twoways->start;
 for my $db (qw(d1 d2))
@@ -158,15 +158,15 @@ is($node_twoways->safe_psql('d2', "SELECT count(f) FROM t2"),
 
 # Verify table data is synced with cascaded replication setup. This is mainly
 # to test whether the data written by tablesync worker gets replicated.
-my $node_pub = get_new_node('testpublisher1');
+my $node_pub = PostgresNode->new('testpublisher1');
 $node_pub->init(allows_streaming => 'logical');
 $node_pub->start;
 
-my $node_pub_sub = get_new_node('testpublisher_subscriber');
+my $node_pub_sub = PostgresNode->new('testpublisher_subscriber');
 $node_pub_sub->init(allows_streaming => 'logical');
 $node_pub_sub->start;
 
-my $node_sub = get_new_node('testsubscriber1');
+my $node_sub = PostgresNode->new('testsubscriber1');
 $node_sub->init(allows_streaming => 'logical');
 $node_sub->start;
 
-- 
2.25.4

>From c39d8bb5096efc82c35a520fdb041ae5dd371560 Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <and...@dunslane.net>
Date: Tue, 1 Jun 2021 13:49:53 -0400
Subject: [PATCH 4/9] Remove the last vestiges of Exporter from PostgresNode

Clients wanting to call get_free_port now need to do so via a qualified
name: PostgresNode::get_free_port().
---
 src/bin/pg_ctl/t/001_start_stop.pl |  2 +-
 src/test/kerberos/t/001_auth.pl    |  2 +-
 src/test/ldap/t/001_auth.pl        |  4 ++--
 src/test/perl/PostgresNode.pm      | 14 ++++++--------
 4 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/src/bin/pg_ctl/t/001_start_stop.pl b/src/bin/pg_ctl/t/001_start_stop.pl
index 4bfc23b93d..1d8d6bbb70 100644
--- a/src/bin/pg_ctl/t/001_start_stop.pl
+++ b/src/bin/pg_ctl/t/001_start_stop.pl
@@ -25,7 +25,7 @@ command_ok([ 'pg_ctl', 'initdb', '-D', "$tempdir/data", '-o', '-N' ],
 	'pg_ctl initdb');
 command_ok([ $ENV{PG_REGRESS}, '--config-auth', "$tempdir/data" ],
 	'configure authentication');
-my $node_port = get_free_port();
+my $node_port = PostgresNode::get_free_port();
 open my $conf, '>>', "$tempdir/data/postgresql.conf";
 print $conf "fsync = off\n";
 print $conf "port = $node_port\n";
diff --git a/src/test/kerberos/t/001_auth.pl b/src/test/kerberos/t/001_auth.pl
index d6191498f0..34562045cb 100644
--- a/src/test/kerberos/t/001_auth.pl
+++ b/src/test/kerberos/t/001_auth.pl
@@ -74,7 +74,7 @@ my $kdc_conf    = "${TestLib::tmp_check}/kdc.conf";
 my $krb5_cache  = "${TestLib::tmp_check}/krb5cc";
 my $krb5_log    = "${TestLib::log_path}/krb5libs.log";
 my $kdc_log     = "${TestLib::log_path}/krb5kdc.log";
-my $kdc_port    = get_free_port();
+my $kdc_port    = PostgresNode::get_free_port();
 my $kdc_datadir = "${TestLib::tmp_check}/krb5kdc";
 my $kdc_pidfile = "${TestLib::tmp_check}/krb5kdc.pid";
 my $keytab      = "${TestLib::tmp_check}/krb5.keytab";
diff --git a/src/test/ldap/t/001_auth.pl b/src/test/ldap/t/001_auth.pl
index 553041baa2..1d1282f8dc 100644
--- a/src/test/ldap/t/001_auth.pl
+++ b/src/test/ldap/t/001_auth.pl
@@ -58,8 +58,8 @@ my $slapd_pidfile = "${TestLib::tmp_check}/slapd.pid";
 my $slapd_logfile = "${TestLib::log_path}/slapd.log";
 my $ldap_conf     = "${TestLib::tmp_check}/ldap.conf";
 my $ldap_server   = 'localhost';
-my $ldap_port     = get_free_port();
-my $ldaps_port    = get_free_port();
+my $ldap_port     = PostgresNode::get_free_port();
+my $ldaps_port    = PostgresNode::get_free_port();
 my $ldap_url      = "ldap://$ldap_server:$ldap_port";;
 my $ldaps_url     = "ldaps://$ldap_server:$ldaps_port";
 my $ldap_basedn   = 'dc=example,dc=net';
diff --git a/src/test/perl/PostgresNode.pm b/src/test/perl/PostgresNode.pm
index 2a889065ea..7ed52c83bb 100644
--- a/src/test/perl/PostgresNode.pm
+++ b/src/test/perl/PostgresNode.pm
@@ -69,7 +69,7 @@ PostgresNode - class representing PostgreSQL server instance
   $node->stop('fast');
 
   # Find a free, unprivileged TCP port to bind some other service to
-  my $port = get_free_port();
+  my $port = PostgresNode::get_free_port();
 
 =head1 DESCRIPTION
 
@@ -93,7 +93,6 @@ use warnings;
 use Carp;
 use Config;
 use Cwd;
-use Exporter 'import';
 use Fcntl qw(:mode);
 use File::Basename;
 use File::Path qw(rmtree);
@@ -109,10 +108,6 @@ use TestLib ();
 use Time::HiRes qw(usleep);
 use Scalar::Util qw(blessed);
 
-our @EXPORT = qw(
-  get_free_port
-);
-
 our ($use_tcp, $test_localhost, $test_pghost, $last_host_assigned,
 	$last_port_assigned, @all_nodes, $died);
 
@@ -1379,8 +1374,8 @@ sub installed_command
 =item get_free_port()
 
 Locate an unprivileged (high) TCP port that's not currently bound to
-anything.  This is used by new(), and is also exported for use
-by test cases that need to start other, non-Postgres servers.
+anything.  This is used by C<new()>, and also by some test cases that need to
+start other, non-Postgres servers.
 
 Ports assigned to existing PostgresNode objects are automatically
 excluded, even if those servers are not currently running.
@@ -1388,6 +1383,9 @@ excluded, even if those servers are not currently running.
 XXX A port available now may become unavailable by the time we start
 the desired service.
 
+Note: this is not an instance method. As it's not exported it should be
+called from outside the module as C<PostgresNode::get_free_port()>.
+
 =cut
 
 sub get_free_port
-- 
2.25.4

>From 18570572a6ddba948f1bee93d9a013fc1a58c4c1 Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <and...@dunslane.net>
Date: Tue, 1 Jun 2021 13:51:22 -0400
Subject: [PATCH 5/9] Add a method to PostgresVersion.pm to produce the major
 version string

For versions before 10, this will produce dotted notation unless a
separator argument is given, in which case it is used.
---
 src/test/perl/PostgresVersion.pm | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/test/perl/PostgresVersion.pm b/src/test/perl/PostgresVersion.pm
index 4e764c36a5..5ff701ce11 100644
--- a/src/test/perl/PostgresVersion.pm
+++ b/src/test/perl/PostgresVersion.pm
@@ -32,6 +32,9 @@ PostgresVersion - class representing PostgreSQL version numbers
   # interpolate in a string
   my $stringyval = "version: $version";
 
+  # get the major version
+  my $maj = $version->major;
+
 =head1 DESCRIPTION
 
 PostgresVersion encapsulates Postgres version numbers, providing parsing
@@ -133,4 +136,29 @@ sub _stringify
 	return $self->{str};
 }
 
+=pod
+
+=over
+
+=item major([separator => 'char'])
+
+Returns the major version. For versions before 10 the parts are separated by
+a dot unless the separator argument is given.
+
+=back
+
+=cut
+
+sub major
+{
+    my ($self, %params) = @_;
+    my $result = $self->{num}->[0];
+    if ($result + 0 < 10)
+    {
+        my $sep = $params{separator} || '.';
+        $result .= "$sep$self->{num}->[1]";
+    }
+    return $result;
+}
+
 1;
-- 
2.25.4

>From 2d7920cb8a98df6e97c1213c4214c22d626f8372 Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <and...@dunslane.net>
Date: Tue, 1 Jun 2021 13:52:11 -0400
Subject: [PATCH 6/9] Add a getter function for a PostgresNode install_path

Experience has shown this can be useful, and while not strictly necessary
we should not normally expose the internals of PostgresNode objects.
---
 src/test/perl/PostgresNode.pm | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/test/perl/PostgresNode.pm b/src/test/perl/PostgresNode.pm
index 7ed52c83bb..7b1ce46e8d 100644
--- a/src/test/perl/PostgresNode.pm
+++ b/src/test/perl/PostgresNode.pm
@@ -302,6 +302,20 @@ sub backup_dir
 
 =pod
 
+=item $node->install_path()
+
+The configured install path (if any) for the node.
+
+=cut
+
+sub install_path
+{
+	my ($self) = @_;
+	return $self->{_install_path};
+}
+
+=pod
+
 =item $node->info()
 
 Return a string containing human-readable diagnostic information (paths, etc)
-- 
2.25.4

>From 8cb9828da241d6615f3e3ec1a5810247cc8e8ab1 Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <and...@dunslane.net>
Date: Sun, 13 Jun 2021 09:22:10 -0400
Subject: [PATCH 7/9] fixup recovery tests

---
 src/test/recovery/t/005_replay_delay.pl          | 2 +-
 src/test/recovery/t/025_stuck_on_old_timeline.pl | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/test/recovery/t/005_replay_delay.pl b/src/test/recovery/t/005_replay_delay.pl
index aa418dda8f..0b56380e0a 100644
--- a/src/test/recovery/t/005_replay_delay.pl
+++ b/src/test/recovery/t/005_replay_delay.pl
@@ -58,7 +58,7 @@ ok(time() - $primary_insert_time >= $delay,
 
 
 # Check that recovery can be paused or resumed expectedly.
-my $node_standby2 = get_new_node('standby2');
+my $node_standby2 = PostgresNode->new('standby2');
 $node_standby2->init_from_backup($node_primary, $backup_name,
 	has_streaming => 1);
 $node_standby2->start;
diff --git a/src/test/recovery/t/025_stuck_on_old_timeline.pl b/src/test/recovery/t/025_stuck_on_old_timeline.pl
index fb15f9576b..00ee9fcaed 100644
--- a/src/test/recovery/t/025_stuck_on_old_timeline.pl
+++ b/src/test/recovery/t/025_stuck_on_old_timeline.pl
@@ -16,7 +16,7 @@ use FindBin;
 use Test::More tests => 1;
 
 # Initialize primary node
-my $node_primary = get_new_node('primary');
+my $node_primary = PostgresNode->new('primary');
 
 # Set up an archive command that will copy the history file but not the WAL
 # files. No real archive command should behave this way; the point is to
@@ -47,7 +47,7 @@ my $backup_name = 'my_backup';
 $node_primary->backup($backup_name);
 
 # Create streaming standby linking to primary
-my $node_standby = get_new_node('standby');
+my $node_standby = PostgresNode->new('standby');
 $node_standby->init_from_backup(
 	$node_primary, $backup_name,
 	allows_streaming => 1,
@@ -60,7 +60,7 @@ $node_standby->backup($backup_name, backup_options => ['-Xnone']);
 
 # Create cascading standby but don't start it yet.
 # Must set up both streaming and archiving.
-my $node_cascade = get_new_node('cascade');
+my $node_cascade = PostgresNode->new('cascade');
 $node_cascade->init_from_backup($node_standby, $backup_name,
 	has_streaming => 1);
 $node_cascade->enable_restoring($node_primary);
-- 
2.25.4

>From cdfc03a8119cccd02b14252b0d0e4d0a85fa3880 Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <and...@dunslane.net>
Date: Sun, 13 Jun 2021 09:26:40 -0400
Subject: [PATCH 8/9] fixup README

---
 src/test/perl/README | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/test/perl/README b/src/test/perl/README
index fd9394957f..f04b2a2ea4 100644
--- a/src/test/perl/README
+++ b/src/test/perl/README
@@ -48,7 +48,7 @@ Each test script should begin with:
 then it will generally need to set up one or more nodes, run commands
 against them and evaluate the results. For example:
 
-    my $node = PostgresNode->get_new_node('primary');
+    my $node = PostgresNode->new('primary');
     $node->init;
     $node->start;
 
-- 
2.25.4

>From bbc6a096bdaba9b24f016fe84b123ed9e64ecfde Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <and...@dunslane.net>
Date: Fri, 16 Jul 2021 15:28:24 -0400
Subject: [PATCH 9/9] new recovery fixups

---
 src/test/recovery/t/019_replslot_limit.pl       | 4 ++--
 src/test/subscription/t/021_twophase.pl         | 4 ++--
 src/test/subscription/t/022_twophase_cascade.pl | 6 +++---
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/src/test/recovery/t/019_replslot_limit.pl b/src/test/recovery/t/019_replslot_limit.pl
index f421bd7c90..5776f6766a 100644
--- a/src/test/recovery/t/019_replslot_limit.pl
+++ b/src/test/recovery/t/019_replslot_limit.pl
@@ -267,7 +267,7 @@ if ($TestLib::windows_os)
 
 # Get a slot terminated while the walsender is active
 # We do this by sending SIGSTOP to the walsender.  Skip this on Windows.
-my $node_primary3 = get_new_node('primary3');
+my $node_primary3 = PostgresNode->new('primary3');
 $node_primary3->init(allows_streaming => 1, extra => ['--wal-segsize=1']);
 $node_primary3->append_conf(
 	'postgresql.conf', qq(
@@ -283,7 +283,7 @@ $node_primary3->safe_psql('postgres',
 $backup_name = 'my_backup';
 $node_primary3->backup($backup_name);
 # Create standby
-my $node_standby3 = get_new_node('standby_3');
+my $node_standby3 = PostgresNode->new('standby_3');
 $node_standby3->init_from_backup($node_primary3, $backup_name,
 	has_streaming => 1);
 $node_standby3->append_conf('postgresql.conf', "primary_slot_name = 'rep3'");
diff --git a/src/test/subscription/t/021_twophase.pl b/src/test/subscription/t/021_twophase.pl
index c6ada92ff0..903a771fe3 100644
--- a/src/test/subscription/t/021_twophase.pl
+++ b/src/test/subscription/t/021_twophase.pl
@@ -13,14 +13,14 @@ use Test::More tests => 24;
 ###############################
 
 # Initialize publisher node
-my $node_publisher = get_new_node('publisher');
+my $node_publisher = PostgresNode->new('publisher');
 $node_publisher->init(allows_streaming => 'logical');
 $node_publisher->append_conf('postgresql.conf',
 	qq(max_prepared_transactions = 10));
 $node_publisher->start;
 
 # Create subscriber node
-my $node_subscriber = get_new_node('subscriber');
+my $node_subscriber = PostgresNode->new('subscriber');
 $node_subscriber->init(allows_streaming => 'logical');
 $node_subscriber->append_conf('postgresql.conf',
 	qq(max_prepared_transactions = 10));
diff --git a/src/test/subscription/t/022_twophase_cascade.pl b/src/test/subscription/t/022_twophase_cascade.pl
index e61d28a48b..d7cc99959f 100644
--- a/src/test/subscription/t/022_twophase_cascade.pl
+++ b/src/test/subscription/t/022_twophase_cascade.pl
@@ -15,19 +15,19 @@ use Test::More tests => 27;
 
 # Initialize nodes
 # node_A
-my $node_A = get_new_node('node_A');
+my $node_A = PostgresNode->new('node_A');
 $node_A->init(allows_streaming => 'logical');
 $node_A->append_conf('postgresql.conf',
 	qq(max_prepared_transactions = 10));
 $node_A->start;
 # node_B
-my $node_B = get_new_node('node_B');
+my $node_B = PostgresNode->new('node_B');
 $node_B->init(allows_streaming => 'logical');
 $node_B->append_conf('postgresql.conf',
 	qq(max_prepared_transactions = 10));
 $node_B->start;
 # node_C
-my $node_C = get_new_node('node_C');
+my $node_C = PostgresNode->new('node_C');
 $node_C->init(allows_streaming => 'logical');
 $node_C->append_conf('postgresql.conf',
 	qq(max_prepared_transactions = 10));
-- 
2.25.4

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