pg.ddx.io  pgsql-admin@postgresql.org mailing list archive  

help / color / mirror / Atom feed
From: Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
To: Azimuddin Mohammed <azimeiu@gmail.com>
Cc: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: Replication mode
Date: Thu, 11 Jan 2018 14:37:07 +1300
Message-ID: <486c6844-6e55-0151-449c-6ccf5dcc3cf6@catalyst.net.nz> (raw)
In-Reply-To: <CAKUuFd6A0kCHQLi6sPUUUJ-_nB1mJOHaNRaG-vRtZQgr8w0-iw@mail.gmail.com>
References: <CAKUuFd5rq4k0HnPYOf0AuUrSRaL-iNwPYFe=e84qmtwrBMG+Gg@mail.gmail.com>
	<ec6b33ee-e6da-bde5-5c42-c15b847a5b30@2ndquadrant.com>
	<eb965246-4bba-a47e-b939-a6279c632c7b@catalyst.net.nz>
	<CAKUuFd72Daabtt4Hyyd7Nr_vUEVkN82Q8wJpdCkCBwC63ZS4yQ@mail.gmail.com>
	<a9a09d31-4127-2a19-3bc7-085cf442a310@catalyst.net.nz>
	<CAKUuFd44ERk+EdgNZuxsiCLObb9-ZwUWVddFWg3R2b_Wtfkacw@mail.gmail.com>
	<97973de0-8de3-a7eb-d702-da7d680e8ccb@catalyst.net.nz>
	<CAKUuFd6A0kCHQLi6sPUUUJ-_nB1mJOHaNRaG-vRtZQgr8w0-iw@mail.gmail.com>

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




view thread (16+ messages)  latest in thread

Message-ID: <486c6844-6e55-0151-449c-6ccf5dcc3cf6@catalyst.net.nz>
Permalink:  ../486c6844-6e55-0151-449c-6ccf5dcc3cf6@catalyst.net.nz/
Also on:    postgresql.org/message-id/486c6844-6e55-0151-449c-6ccf5dcc3cf6@catalyst.net.nz

 · 

reply
Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-admin@postgresql.org
  Cc: mark.kirkwood@catalyst.net.nz, azimeiu@gmail.com, peter.eisentraut@2ndquadrant.com
  Subject: Re: Replication mode
  In-Reply-To: <486c6844-6e55-0151-449c-6ccf5dcc3cf6@catalyst.net.nz>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox