This is what bothers me from node1 postgresql.log: 25319 2011-01-21 10:01:23 CET LOG: statement: SELECT pg_current_xlog_location() 25319 2011-01-21 10:01:23 CET ERROR: recovery is in progress 25319 2011-01-21 10:01:23 CET HINT: WAL control functions cannot be executed during recovery.
What this error mean? SELECT can not be executed on node1 and node1 have primary status. And where did I tell pgpool to switch primaries from node2 -> node1. new status: # psql -p 9999 -c "show pool_nodes;" -Upostgres node_id | hostname | port | status | lb_weight | state ---------+------------------+------+--------+-----------+------- 0 | node1 | 5432 | 2 | 0.500000 | P 1 | node2 | 5432 | 2 | 0.500000 | S On Fri, Jan 21, 2011 at 9:15 AM, Tatsuo Ishii <is...@sraoss.co.jp> wrote: > This doesn't look good? > > 25314 2011-01-21 10:00:43 CET ERROR: function pgpool_walrecrunning() does > not exist at character 32 > -- > Tatsuo Ishii > SRA OSS, Inc. Japan > English: http://www.sraoss.co.jp/index_en.php > Japanese: http://www.sraoss.co.jp > > > Ok, this is before starting pcp_recovery_node: > > > > # psql -p 9999 -c "show pool_nodes;" -Upostgres > > node_id | hostname | port | status | lb_weight | state > > ---------+------------------+------+--------+-----------+------- > > 0 | node1 | 5432 | 3 | 0.500000 | S > > 1 | node2 | 5432 | 2 | 0.500000 | P > > > > then, I type: > > > > pcp_recovery_node 20 localhost 9898 postgres <password> 0 -d > > > > (I have disabled creating trigger file in failback for this example) > > > > pgpool.log (I have removed some debug duplicated messages): > > > > 2011-01-21 08:58:18 LOG: pid 4467: starting recovering node 0 > > > > > > 2011-01-21 08:58:18 LOG: pid 4467: starting recovery command: "SELECT > > pgpool_recovery('basebackup.sh', 'puma.intera.si', '/pgdata/data90.C/')" > > > > 2011-01-21 08:58:19 DEBUG: pid 4434: starting health checking > > > > > > 2011-01-21 08:58:19 DEBUG: pid 4434: health_check: 0 th DB node status: 3 > > > > > > 2011-01-21 08:58:19 DEBUG: pid 4434: health_check: 1 th DB node status: 2 > > > > > > 2011-01-21 08:58:56 LOG: pid 4467: 1st stage is done > > > > > > 2011-01-21 08:58:56 LOG: pid 4467: check_postmaster_started: try to > > connect to postmaster on hostname:node1 database:postgres user:postgres > > (retry 0 times) > > 2011-01-21 08:58:56 LOG: pid 4467: check_postmaster_started: failed to > > connect to postmaster on hostname:node1 database:postgres user:postgres > > > > 2011-01-21 08:58:59 LOG: pid 4467: check_postmaster_started: try to > > connect to postmaster on hostname:puma.intera.si database:postgres > > user:postgres (retry 1 times) > > 2011-01-21 08:58:59 LOG: pid 4467: 0 node restarted > > > > > > 2011-01-21 08:58:59 LOG: pid 4467: send_failback_request: fail back 0 > th > > node request from pid 4467 > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: failover_handler called > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: failover_handler: starting to select > > new master node > > > > 2011-01-21 08:58:59 LOG: pid 4434: starting fail back. reconnect host > > node1(5432) > > > > 2011-01-21 08:58:59 LOG: pid 4434: execute command: > > /usr/local/pgpool-II/etc/failback.sh 0 "node1" 5432 /pgdata/data90.C/ 0 1 > > "node2" 1 > > 2011-01-21 08:58:59 DEBUG: pid 4434: failover_handler: kill 4944 > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4944: child received shutdown request > signal > > 3 > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: failover_handler: kill 4945 > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: failover_handler: kill 4946 > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: failover_handler: kill 4947 > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: failover_handler: kill 4948 > > 2011-01-21 08:58:59 DEBUG: pid 4434: failover_handler: kill 4974 > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: failover_handler: kill 4975 > > > > > > 2011-01-21 08:58:59 LOG: pid 4434: failover_handler: set new master > node: > > 0 > > > > 2011-01-21 08:58:59 DEBUG: pid 5583: I am 5583 > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4975: child received shutdown request > signal > > 3 > > > > 2011-01-21 08:58:59 DEBUG: pid 4971: child received shutdown request > signal > > 3 > > 2011-01-21 08:58:59 DEBUG: pid 4945: child received shutdown request > signal > > 3 > > > > 2011-01-21 08:58:59 DEBUG: pid 5613: I am 5613 > > > > > > 2011-01-21 08:58:59 LOG: pid 4434: failback done. reconnect host > > node1(5432) > > > > 2011-01-21 08:58:59 DEBUG: pid 5614: I am 5614 > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4964: child received shutdown request > signal > > 3 > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: pool_ssl: SSL requested but SSL > support > > is not available > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: s_do_auth: auth kind: 0 > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: s_do_auth: parameter status data > > received > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: s_do_auth: parameter status data > > received > > 2011-01-21 08:58:59 DEBUG: pid 4434: do_query: kind: E > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: do_query: kind: Z > > > > > > 2011-01-21 08:58:59 LOG: pid 4434: find_primary_node: do_query returns > no > > rows > > > > 2011-01-21 08:58:59 LOG: pid 4434: find_primary_node: do_query returns > no > > data > > > > 2011-01-21 08:58:59 LOG: pid 4434: find_primary_node: primary node id > is 0 > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: reap_handler called > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: reap_handler: call wait3 > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4434: child 4944 exits with status 0 > > 2011-01-21 08:58:59 DEBUG: pid 4434: reap_handler: normally exited > > > > > > 2011-01-21 08:58:59 LOG: pid 4467: recovery done > > > > > > 2011-01-21 08:58:59 DEBUG: pid 4468: do_query: kind: E > > > > > > 2011-01-21 08:58:59 ERROR: pid 4468: pool_read: EOF encountered with > backend > > > > > > 2011-01-21 08:58:59 ERROR: pid 4468: do_query: error while reading > message > > kind > > > > 2011-01-21 08:58:59 ERROR: pid 4468: check_replication_time_lag: SELECT > > pg_current_xlog_location() failed > > > > 2011-01-21 08:59:09 DEBUG: pid 4434: starting health checking > > > > > > 2011-01-21 08:59:09 DEBUG: pid 4434: health_check: 0 th DB node status: 1 > > > > > > 2011-01-21 08:59:09 DEBUG: pid 4434: health_check: 1 th DB node status: 2 > > > > > > 2011-01-21 08:59:09 DEBUG: pid 4468: pool_ssl: SSL requested but SSL > support > > is not available > > > > 2011-01-21 08:59:09 DEBUG: pid 4468: s_do_auth: auth kind: 0 > > 2011-01-21 09:03:40 DEBUG: pid 4468: do_query: kind: T > > 2011-01-21 09:03:40 DEBUG: pid 4468: num_fileds: 1 > > 2011-01-21 09:03:40 DEBUG: pid 4468: do_query: kind: E > > 2011-01-21 09:03:40 DEBUG: pid 4468: do_query: kind: Z > > 2011-01-21 09:03:40 ERROR: pid 4468: check_replication_time_lag: SELECT > > pg_current_xlog_location() returns no rows > > 2011-01-21 09:03:49 DEBUG: pid 4434: starting health checking > > 2011-01-21 09:03:49 DEBUG: pid 4434: health_check: 0 th DB node status: 1 > > 2011-01-21 09:03:50 DEBUG: pid 4434: health_check: 1 th DB node status: 2 > > 2011-01-21 09:03:50 DEBUG: pid 4468: do_query: kind: T > > 2011-01-21 09:03:50 DEBUG: pid 4468: num_fileds: 1 > > 2011-01-21 09:03:50 DEBUG: pid 4468: do_query: kind: E > > 2011-01-21 09:03:50 DEBUG: pid 4468: do_query: kind: Z > > 2011-01-21 09:03:50 ERROR: pid 4468: check_replication_time_lag: SELECT > > pg_current_xlog_location() returns no rows > > 2011-01-21 09:04:00 DEBUG: pid 4434: starting health checking > > 2011-01-21 09:04:00 DEBUG: pid 4434: health_check: 0 th DB node status: 1 > > 2011-01-21 09:04:00 DEBUG: pid 4434: health_check: 1 th DB node status: 2 > > 2011-01-21 09:04:00 DEBUG: pid 4468: do_query: kind: T > > 2011-01-21 09:04:00 DEBUG: pid 4468: num_fileds: 1 > > > > postgresql.conf (node1): > > > > 25308 2011-01-21 10:00:40 CET LOG: database system was interrupted; last > > known up at 2011-01-21 09:58:57 CET > > > > 25308 2011-01-21 10:00:40 CET LOG: creating missing WAL directory > > "pg_xlog/archive_status" > > > > 25308 2011-01-21 10:00:40 CET LOG: entering standby mode > > > > > > 25309 2011-01-21 10:00:40 CET LOG: streaming replication successfully > > connected to primary > > > > 25308 2011-01-21 10:00:41 CET LOG: redo starts at 1/E4000020 > > > > > > 25308 2011-01-21 10:00:41 CET LOG: consistent recovery state reached at > > 1/E5000000 > > > > 25306 2011-01-21 10:00:41 CET LOG: database system is ready to accept > read > > only connections > > > > 25314 2011-01-21 10:00:43 CET LOG: statement: SELECT pg_is_in_recovery() > > AND pgpool_walrecrunning() > > > > 25314 2011-01-21 10:00:43 CET ERROR: function pgpool_walrecrunning() > does > > not exist at character 32 > > > > 25314 2011-01-21 10:00:43 CET HINT: No function matches the given name > and > > argument types. You might need to add explicit type casts. > > > > 25314 2011-01-21 10:00:43 CET STATEMENT: SELECT pg_is_in_recovery() AND > > pgpool_walrecrunning() > > > > 25314 2011-01-21 10:00:43 CET LOG: unexpected EOF on client connection > > > > > > 25319 2011-01-21 10:00:53 CET LOG: statement: SELECT > > pg_current_xlog_location() > > > > 25319 2011-01-21 10:00:53 CET ERROR: recovery is in progress > > > > > > 25319 2011-01-21 10:00:53 CET HINT: WAL control functions cannot be > > executed during recovery. > > > > 25319 2011-01-21 10:00:53 CET STATEMENT: SELECT > pg_current_xlog_location() > > > > > > 25319 2011-01-21 10:01:03 CET LOG: statement: SELECT > > pg_current_xlog_location() > > > > 25319 2011-01-21 10:01:03 CET ERROR: recovery is in progress > > > > > > 25319 2011-01-21 10:01:03 CET HINT: WAL control functions cannot be > > executed during recovery. > > > > 25319 2011-01-21 10:01:03 CET STATEMENT: SELECT > pg_current_xlog_location() > > > > > > 25319 2011-01-21 10:01:13 CET LOG: statement: SELECT > > pg_current_xlog_location() > > > > 25319 2011-01-21 10:01:13 CET ERROR: recovery is in progress > > > > > > 25319 2011-01-21 10:01:13 CET HINT: WAL control functions cannot be > > executed during recovery. > > 25319 2011-01-21 10:01:13 CET STATEMENT: SELECT > pg_current_xlog_location() > > 25319 2011-01-21 10:01:23 CET LOG: statement: SELECT > > pg_current_xlog_location() > > 25319 2011-01-21 10:01:23 CET ERROR: recovery is in progress > > 25319 2011-01-21 10:01:23 CET HINT: WAL control functions cannot be > > executed during recovery. > > 25319 2011-01-21 10:01:23 CET STATEMENT: SELECT > pg_current_xlog_location() > > 25319 2011-01-21 10:01:33 CET LOG: statement: SELECT > > pg_current_xlog_location() > > > > postgresql.conf (node2): > > > > 5853 2011-01-21 09:58:57 CET LOG: statement: SELECT > > pgpool_recovery('basebackup.sh', node1', '/pgdata/data90.C/') > > 5856 2011-01-21 09:58:57 CET LOG: statement: SELECT > > pg_start_backup('Streaming Replication', true) > > pg_start_backup > > ----------------- > > 1/E4000020 > > (1 row) > > > > 5887 2011-01-21 09:59:34 CET LOG: statement: SELECT pg_stop_backup() > > NOTICE: pg_stop_backup complete, all required WAL segments have been > > archived > > pg_stop_backup > > ---------------- > > 1/E40000D8 > > (1 row) > > > > 5853 2011-01-21 09:59:35 CET LOG: statement: SELECT > > pgpool_remote_start('node1', '/pgdata/data90.C/') > > 5893 2011-01-21 09:59:36 CET LOG: replication connection authorized: > > user=postgres host=192.168.10.120 port=45066 > > > > > > > > On Fri, Jan 21, 2011 at 8:44 AM, Tatsuo Ishii <is...@sraoss.co.jp> > wrote: > > > >> Ok. Can you show the pgpool log and PostgreSQL log(both node 0 and 1) > >> when you did: > >> > >> >> > pcp_recovery_node 20 localhost 9898 postgres <password> 0 -d > >> -- > >> Tatsuo Ishii > >> SRA OSS, Inc. Japan > >> English: http://www.sraoss.co.jp/index_en.php > >> Japanese: http://www.sraoss.co.jp > >> > >> > Actually, yesterday in desperate moments I have done that, I got > >> > cvs version of pgpool. > >> > I think I have same situation. > >> > I have added failback script that creates trigger file on my new > primary > >> > node, > >> > but standby is acting like primary.. > >> > > >> > On Fri, Jan 21, 2011 at 8:19 AM, Tatsuo Ishii <is...@sraoss.co.jp> > >> wrote: > >> > > >> >> > I'm having problem with pcp_recovery_node. > >> >> > I have 3 computer architecture. One computer is with installed > >> pg_pool, > >> >> and > >> >> > two other are nodes. > >> >> > Pg_pool version installed is 3.0.1, and postgres is 9.0.2 > >> >> > I have streaming replication configured. > >> >> > > >> >> > I'm trying to setup automatic recovery of nodes. > >> >> > I set one server to be master, and other slave (read only > connection). > >> >> > When primary fails, slave is being used as a master and this > >> transition > >> >> from > >> >> > one > >> >> > node to another is automatic and everything works great. > >> >> > But, when I execute pcp_recovery_node command: > >> >> > > >> >> > pcp_recovery_node 20 localhost 9898 postgres <password> 0 -d > >> >> > > >> >> > pgpool is trying to make my first node (one that I'm trying to > >> recover) > >> >> > as a master node, and everything went well except crating trigger > >> file. > >> >> > >> >> That is the limitation of pgpool-II 3.0.x. pgpool-II 3.1 will make > >> >> this possible. You can try the to-be-pgpool-II 3.1 source code from > >> >> CVS HEAD or tar ball from > >> >> > >> >> > >> > http://pgpool.projects.postgresql.org/contrib_docs/simple_sr_setting/index.html > >> >> -- > >> >> Tatsuo Ishii > >> >> SRA OSS, Inc. Japan > >> >> English: http://www.sraoss.co.jp/index_en.php > >> >> Japanese: http://www.sraoss.co.jp > >> >> > >> >> > So, in log file there is no errors, failover.sh is not executed, > and > >> >> > node1 (just recovered node) is acting like it is master, but it is > not > >> >> > until I manually create trigger file. > >> >> > > >> >> > Why pgpool is trying to make my just recovered node as master, and > >> >> > not just bring it up and set it to act like slave. Can I configure > >> this? > >> >> > > >> >> > How can I know what action is provided by executing > pcp_recovery_node? > >> >> > > >> >> > I hope that I descibed my problem well. > >> > > > > > > > > -- > > Armin > -- Armin
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