Re: Replication mode

On 11/01/18 14:10, Azimuddin Mohammed wrote:

> :-)
> Our fear is using open source  tools  for HA creates dependency and 
> single point of failure(pgpool). Or say pacemaker which our enterprise 
> do not recommend.
> We are planning to use postgres to use for our hadoop metastore which 
> is presently on Oracle.
>

Ok, I understand. The usual way this single point of failure thing is 
handled is to use something like a pair of HAProxy servers with 
redundant network switches (i.e make the HA manager itself HA). While 
this is a bit fiddly it is reasonably well documented and standard 
(experienced system and network admins should have no difficultly 
getting it to work).

There are also specialized Postgres related solutions for HA (e.g repmgr 
from 2ndquadrant) that might be worth a look as well.

regards

Mark