Re: How can I avoid PGPool as a single point of failure?

[Vivek Khera <vivek(at)khera(dot)org>]

On Jan 31, 2008, at 4:28 AM, Aaron Glenn wrote:

> CARP *and* pfsync.
> this late at night off the top of my head I can't see any blatantly
> obvious reason this wouldn't work (with at least pgpool that is, dunno
> about your data)

we use CARP to balance and failover some webserver pairs.  We also use  
it to balance our internal DNS caches to our internal clients.  The  
only drawback is that once you pass a router, all traffic from that  
router will go to a single CARP host -- ie, you get failover but no  
balance.

Other than that, it makes upgrading systems nearly invisible to the  
other servers.  For critical things like DNS, this is a big win.