Taking postgres backup not working

Hello,

i was in the task of migarting services to new server. and at the end, i tried to configure backup. It works for couchdb, but for postgresql it's not working. The following is the script I run as pointed on the documentation: Backup and Restore — CommCareHQ Deployment documentation

Here is the configuration on public.yml file

backup_postgres: plain
postgresql_backup_dir: /opt/backup/postgresql
postgres_backup_days: 3
postgres_backup_weeks: 2

then i run cchq echis aps --tags=backups

I have seen the same issue posted previously: Local backup for postgres

Hi Demis,

What error/traceback do you get when you run that command, can you please share it here?

Hi Sravan, this command cchq echis aps --tags=backups skips, postgresql backup task.

Now, worked with an additional step. that is PostgreSQL backup requires an entry on inventory file. something like this

[pg_backup:children]
echis_server28
echis_server33

But this is not described in the Documentation :