> On Oct 10, 2015, at 3:44 PM, Adrian Klaver <adrian.kla...@aklaver.com> wrote: > > On 10/10/2015 12:02 PM, Chuck Martin wrote: >> >>> On Sep 5, 2015, at 5:37 PM, Adrian Klaver <adrian.kla...@aklaver.com> wrote: >>> >>> On 09/05/2015 02:27 PM, Chuck Martin wrote: >>>>> On Sep 5, 2015, at 4:29 PM, Adrian Klaver <adrian.kla...@aklaver.com> >>>>> wrote: >>>>> >>>>> On 09/05/2015 11:00 AM, Chuck Martin wrote: >>> >>>>>> >>>>>> I had added to my pg_hba.conf >>>>>> >>>>>> host replication rep 64.207.10.121/32 cert >>>>> >>>>> From the above the only user that can use replication connecting from >>>>> 64.207.10.121/32 is rep. You did not specify a -U in your connection >>>>> above and ran the command as root so pg_basebackup used that as the user, >>>>> which is the default behavior: >>>>> >>>>> http://www.postgresql.org/docs/9.4/interactive/libpq-connect.html#LIBPQ-PARAMKEYWORDS >>>>> " >>>>> user >>>>> >>>>> PostgreSQL user name to connect as. Defaults to be the same as the >>>>> operating system name of the user running the application. >>>>> " >>>>> >>>>> There is no pg_hba entry for database replication and user root so the >>>>> connection was rejected. To repeat, get out of the habit of running >>>>> Postgres commands as root, it is not necessary. What matters is the >>>>> Postgres user you are connecting as. When using replication, which is >>>>> what pg_basebackup is doing, you need to connect as a user with >>>>> sufficient privileges: >>>>> >>>>> http://www.postgresql.org/docs/9.4/interactive/app-pgbasebackup.html >>>>> >>>>> ".. The connection must be made with a superuser or a user having >>>>> REPLICATION permissions (see Section 20.2), and pg_hba.conf must >>>>> explicitly permit the replication connection. .." >>>>> >>>>> Whatever user you choose to do this with then needs to authorized in >>>>> pg_hba.conf. >>>> >>>> This is very helpful. I understood that pb_basebackup was for creating a >>>> backup for replication purposes, but did not understand that PG needs the >>>> same permissions for it as for the replication itself. I ran it as user >>>> “postgres” and not as “rep”. I think I understand my error, but will study >>>> the links you included to make sure. >>> >>> Well the postgres user is a superuser so it will have the permissions to >>> run pg_basebackup. The problem is that your pg_hba.conf did not authorize >>> the postgres user to connect to the replication 'database' only the rep >>> user. That mismatch is what needs to corrected, assuming the rep user has >>> replication permissions. >>> >>>> >>>> Thanks for your help, Adrian. I think I’ll get this working now. >>>> >>>> Chuck >> >> I continue to struggle with this, but have solved many of the problems I >> caused. I now have the permissions corrected. But when I run pg_basebackup >> from the replicant/slave server, it returns an error that the server version >> 9.3.1 is unsupported. >> >> # pg_basebackup -V >> pg_basebackup (PostgreSQL) 9.2.13 >> >> The replicant is on CentOS 7, and the main/master is on CentOS 6. I have >> installed PostgreSQL 9.3 on both. On the main/master server, I get: >> >> # pg_basebackup -V >> pg_basebackup (PostgreSQL) 9.3.1 >> >> I only find one version of pg_basebackup on the replicant server, but CentOS >> 7 comes with PG 9.2, so I suspect that pg_basebackup is left over from that >> installation. But I’m not sure how to update that. yum update pg_basebackup >> did not work. > > See John's reply. >> >> Any ideas? Or should I just change gears and execute pg_basebackup on the >> main/master instead? > > Yes, you just need to point it at the -D for the standby assuming that > directory is empty. Also are you sure that Postgres 9.3 is running on the > standby? >
John’s reply solved my issue. It showed me that PG 9.3 as also installed, so I modified my command to say: /usr/pgsql-9.3/bin/pg_basebackup --pgdata=/media/RAID2015/data/ --checkpoint=fast --verbose --progress —host=[url to my server] Thanks John and Adrian! Chuck -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
