Re: backup script error with could not connect to database

Did you try

root su -c postgres pg_dumpall > postgresdump.sql

On Wed, 18 Dec 2019 at 19:55, Pepe TD Vo <pepevo(at)yahoo(dot)com> wrote:
>
> hello expert,
>
> I had to do a backup on replication master-slave servers. I also have asked this question before, but I don't understand why I followed the information and same scripting to run on the replication servers and didn't work. I can run pg_dumpall successful but not with the script. Would you please tell me what's wrong and what need to correct the error?
>
> my replication server (master) pg_hba.conf
>
> # "local" is for Unix domain socket connections only
> local all all peer
> host all all 192.168.2.0/24 trust
> # IPv4 local connections:
> host all all 127.0.0.1/32 indent
> local all postgres trust
> host all power_user 0.0.0.0/0 md5
> host all other_user 0.0.0.0/0 md5
> host all storageLoader 0.0.0.0/0 md5
> # IPv6 local connections:
> host all all ::1/128 indent
> #allow replication connections from localhost, by a user with the replication priviledge
> local replication all trust
> host replication all 127.0.0.1/32 trust
> host replicaiton all ::1/128 trust
> host replication replicauser masterIP/32 trust
> host replicaiton replicauser slaveIP/32 trust
>
> from the postgres prompt I can connect to each database
>
> #psql -d template0 -U postgres
> template0-#
> #psql -d template1 -U postgres
> template1-#
>
> #psql -d pscidr -U postgres
> pscidr-#
> #psql -d postgres -U postgres
> postgres-#
>
>
> when I run the script as postgres os, I don't see the error but the only global.sql backup but nothing in it, 0 byte (blank) sql script.
>
> when I run as root su -c postgres /path/pg_backup.sh > pgbackup.log, I get below:
>
> Performing globals backup:
> Globals backup
> pg_dumpall: could not connect to database "template1":FATAL: Ident authentication failed for user "postgres" fro globals backup.
>
> Performing schema-only backup:
> psql:FATAL: Ident authentication failed for user "postgres"
> the following databases were matched for schema-only backup:
>
> performing full backup:
> psql:FATAL: Ident authentication failed for user "postgres"
>
>
> I can run pg_dumpall > postgresdump.sql as postgres user os fine will all the databases backup
>
> pg_backup.sh and pg_backup.config attachment.
>
> v/r,
>
> Bach-Nga
>
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