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RE: load balancer sending to the wrong real servers

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: RE: load balancer sending to the wrong real servers
From: "Burke, Dan" <dburke@xxxxxxxxxxxx>
Date: Tue, 14 Sep 2004 10:09:19 -0400

> > This one is really weird to me.  We've been using heartbeat and
> > ldirector with lvs for a few years now with relatively little
problem.
> > Indeed there's been a lot of time where we haven't had to think
about
> > it.

> What version of heartbeat & ldirectord are you using?  Did ldirectord
get
> sent signal HUP or restarted in some way?  If so, I have seen this 
> behavior in an old version of ldirectord.  Grab the CVS version.  It
might 
> not be a bad idea anyway.  The latest versions are pretty good.  We
are 
> using 1.90-modified here.

> From 1.88 changelog
(http://cvs.linux-ha.org/viewcvs/viewcvs.cgi/linux-
> ha/ldirectord/ldirectord):
> "Status checking of real servers was too primitive. This has been the
root 
> of a lot of bugs relating to realservers or fallback servers not being

> correctly added or removed in various circumstances. This patch adds a

> more sophisticated per virtual status check for real servers.
Hopefully 
> this is the way of the future"

Ahh that is very interesting.  I will have to look into this one.  We're
running 1.77 right now.

Anybody encounter any "gotchas" when upgrading this one?  I'd like to
avoid creating any new desasters from an SLA perspective.

> The 1.2.0x heartbeat is also quite a bit better than 1.0.4 and
previous
> versions.  You should upgrade.

Heartbeat is 1.2.0

Dan.



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