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Re: Expected Failover Time and Configuration Limits.

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: Expected Failover Time and Configuration Limits.
From: <ntadmin@xxxxxxxxxxxx>
Date: Mon, 15 Sep 2003 17:28:00 -0700
> Plaintext to mailing lists please.
My apologies, sent message before I realized it was in html... ;(

> > We are also running ospf and zebra on the directors.
>
> FYI you might want to use quagga (www.quagga.net) for OSPF.  Zebra has
> forked and OSPF is AFAIK better supported under there.  It shouldn't make
a
> difference for failover time, but stability and bugfixes might be better
> with Quagga.
Thanks, will look into that.

RE: failover time +/-10min..
> That is extremely high.  It should be nowhere near that.  How are you
> measuring the failover interval?
We use nagios (nagios.org) to monitor our services and during a failover
these services go down for long enough to send trouble pages and bring the
service down.  I can get more exact measurements when we run a scheduled
failover (tomorrow hopefully, production env. so we'll have to see...)

> > Also we noticed something that seemed quite strange
> > on the virtual interfaces (eth0:##) after about eth0:42
> > it begins skiping every other interface number
> >(eth0:42,eth0:44,eth0:46...) and then sometime later
> > changes to the odd number interfaces and skips the evens.
>
> What version of heartbeat are you running?  Can you post your .conf files?

heartbeat version is 1.0.3-1

-----
ha.cf
-----
keepalive 1
deadtime 20
serial /dev/ttyS0
baud 19200
udpport 694
bcast eth1
nice_failback on
node lb1.reachone.com
node lb2.reachone.com
-----
haresources
-----
lb1.reachone.com IPaddr::192.168.96.1
lb1.reachone.com IPaddr::192.168.100.1
lb1.reachone.com IPaddr::216.177.224.50/32
lb1.reachone.com IPaddr::216.177.255.194/27/eth0
lb1.reachone.com IPaddr::216.177.255.195/27/eth0
lb1.reachone.com IPaddr::216.177.224.12/32/eth0
lb1.reachone.com IPaddr::216.177.224.18/32/eth0
lb1.reachone.com IPaddr::216.177.255.218/27/eth0
lb1.reachone.com IPaddr::216.177.255.219/27/eth0
lb1.reachone.com IPaddr::216.177.255.203/27/eth0
lb1.reachone.com IPaddr::216.177.255.204/27/eth0
lb1.reachone.com IPaddr::216.177.255.198/27/eth0
lb1.reachone.com IPaddr::216.177.255.199/27/eth0
lb1.reachone.com IPaddr::216.177.236.2/25/eth0
lb1.reachone.com IPaddr::216.177.236.3/25/eth0
lb1.reachone.com IPaddr::216.177.236.4/25/eth0
lb1.reachone.com IPaddr::216.177.236.5/25/eth0
lb1.reachone.com IPaddr::216.177.236.6/25/eth0
lb1.reachone.com IPaddr::216.177.236.7/25/eth0
lb1.reachone.com IPaddr::216.177.236.8/25/eth0
lb1.reachone.com IPaddr::216.177.236.9/25/eth0
lb1.reachone.com IPaddr::216.177.236.10/25/eth0
lb1.reachone.com IPaddr::216.177.236.11/25/eth0
lb1.reachone.com IPaddr::216.177.236.12/25/eth0
lb1.reachone.com IPaddr::216.177.236.13/25/eth0
lb1.reachone.com IPaddr::216.177.236.14/25/eth0
lb1.reachone.com IPaddr::216.177.236.15/25/eth0
lb1.reachone.com IPaddr::216.177.236.16/25/eth0
lb1.reachone.com IPaddr::216.177.236.17/25/eth0
lb1.reachone.com IPaddr::216.177.236.18/25/eth0
lb1.reachone.com IPaddr::216.177.236.20/25/eth0
lb1.reachone.com IPaddr::216.177.236.21/25/eth0
lb1.reachone.com IPaddr::216.177.236.22/25/eth0
lb1.reachone.com IPaddr::216.177.236.23/25/eth0
lb1.reachone.com IPaddr::216.177.236.24/25/eth0
lb1.reachone.com IPaddr::216.177.236.25/25/eth0
lb1.reachone.com IPaddr::216.177.236.26/25/eth0
lb1.reachone.com IPaddr::216.177.236.27/25/eth0
lb1.reachone.com IPaddr::216.177.236.28/25/eth0
lb1.reachone.com IPaddr::216.177.236.29/25/eth0
lb1.reachone.com IPaddr::216.177.236.30/25/eth0
lb1.reachone.com IPaddr::216.177.236.31/25/eth0
lb1.reachone.com IPaddr::216.177.236.32/25/eth0
lb1.reachone.com IPaddr::216.177.236.33/25/eth0
lb1.reachone.com IPaddr::216.177.236.34/25/eth0
lb1.reachone.com IPaddr::216.177.236.35/25/eth0
lb1.reachone.com IPaddr::216.177.236.36/25/eth0
lb1.reachone.com IPaddr::216.177.236.37/25/eth0
lb1.reachone.com IPaddr::216.177.236.38/25/eth0
lb1.reachone.com IPaddr::216.177.236.39/25/eth0
lb1.reachone.com IPaddr::216.177.236.40/25/eth0
lb1.reachone.com IPaddr::216.177.236.41/25/eth0
lb1.reachone.com IPaddr::216.177.236.42/25/eth0
lb1.reachone.com IPaddr::216.177.236.43/25/eth0
lb1.reachone.com IPaddr::216.177.236.44/25/eth0
lb1.reachone.com IPaddr::216.177.236.45/25/eth0
lb1.reachone.com IPaddr::216.177.236.46/25/eth0
lb1.reachone.com IPaddr::216.177.236.47/25/eth0
lb1.reachone.com IPaddr::216.177.236.48/25/eth0
lb1.reachone.com IPaddr::216.177.236.49/25/eth0
lb1.reachone.com IPaddr::216.177.236.50/25/eth0
lb1.reachone.com IPaddr::216.177.236.51/25/eth0
lb1.reachone.com IPaddr::216.177.236.52/25/eth0
lb1.reachone.com IPaddr::216.177.236.53/25/eth0
lb1.reachone.com IPaddr::216.177.236.54/25/eth0
lb1.reachone.com IPaddr::216.177.236.55/25/eth0
lb1.reachone.com IPaddr::216.177.236.56/25/eth0
lb1.reachone.com IPaddr::216.177.236.57/25/eth0
lb1.reachone.com IPaddr::216.177.236.58/25/eth0
lb1.reachone.com IPaddr::216.177.236.59/25/eth0
lb1.reachone.com IPaddr::216.177.236.60/25/eth0
lb1.reachone.com IPaddr::216.177.236.61/25/eth0
lb1.reachone.com IPaddr::216.177.236.62/25/eth0
lb1.reachone.com IPaddr::216.177.236.63/25/eth0
lb1.reachone.com IPaddr::216.177.236.64/25/eth0
lb1.reachone.com IPaddr::216.177.236.65/25/eth0
lb1.reachone.com IPaddr::216.177.236.66/25/eth0
lb1.reachone.com IPaddr::216.177.236.67/25/eth0
lb1.reachone.com IPaddr::216.177.236.68/25/eth0
lb1.reachone.com IPaddr::216.177.236.69/25/eth0
lb1.reachone.com IPaddr::216.177.236.70/25/eth0
lb1.reachone.com IPaddr::216.177.236.71/25/eth0
lb1.reachone.com IPaddr::216.177.236.72/25/eth0
lb1.reachone.com IPaddr::205.134.220.53/24/eth0
lb1.reachone.com IPaddr::205.134.220.9/24/eth0
lb1.reachone.com IPaddr::64.94.129.14/25/eth0
lb1.reachone.com IPaddr::64.94.129.44/25/eth0
lb1.reachone.com IPaddr::64.94.129.15/25/eth0
lb1.reachone.com IPaddr::64.94.129.35/25/eth0
lb1.reachone.com IPaddr::64.94.129.126/25/eth0
lb1.reachone.com IPaddr::64.94.129.24/25/eth0
lb1.reachone.com IPaddr::64.94.129.18/25/eth0
lb1.reachone.com IPaddr::64.94.129.19/25/eth0
lb1.reachone.com IPaddr::64.94.129.50/25/eth0
lb1.reachone.com IPaddr::64.94.129.38/25/eth0
lb1.reachone.com IPaddr::64.94.129.29/25/eth0
lb1.reachone.com IPaddr::64.94.129.93/25/eth0
lb1.reachone.com IPaddr::64.94.129.31/25/eth0
lb1.reachone.com IPaddr::64.94.129.47/25/eth0
lb1.reachone.com IPaddr::64.94.129.98/25/eth0
lb1.reachone.com IPaddr::64.94.129.12/25/eth0
lb1.reachone.com IPaddr::64.94.129.13/25/eth0
lb1.reachone.com IPaddr::64.94.129.92/25/eth0
lb1.reachone.com IPaddr::64.94.129.67/25/eth0
lb1.reachone.com IPaddr::64.94.129.28/25/eth0
lb1.reachone.com IPaddr::64.94.129.52/25/eth0
lb1.reachone.com IPaddr::64.94.129.36/25/eth0
lb1.reachone.com IPaddr::64.94.129.115/25/eth0
lb1.reachone.com IPaddr::64.94.129.102/25/eth0
lb1.reachone.com IPaddr::64.94.129.125/25/eth0
lb1.reachone.com IPaddr::64.94.128.13/25/eth0
lb1.reachone.com IPaddr::64.94.129.123/25/eth0
lb1.reachone.com IPaddr::64.94.129.40/25/eth0
lb1.reachone.com IPaddr::64.94.129.101/25/eth0
lb1.reachone.com IPaddr::64.94.129.110/25/eth0
lb1.reachone.com IPaddr::64.94.129.17/25/eth0
lb1.reachone.com IPaddr::64.94.129.75/25/eth0
lb1.reachone.com IPaddr::64.94.129.21/25/eth0
lb1.reachone.com IPaddr::64.94.129.33/25/eth0
lb1.reachone.com IPaddr::64.94.129.55/25/eth0
lb1.reachone.com IPaddr::64.94.129.100/25/eth0
lb1.reachone.com IPaddr::64.94.129.57/25/eth0
lb1.reachone.com IPaddr::64.94.129.58/25/eth0
lb1.reachone.com IPaddr::64.94.129.60/25/eth0
lb1.reachone.com IPaddr::64.94.129.61/25/eth0
lb1.reachone.com IPaddr::64.94.129.64/25/eth0
lb1.reachone.com IPaddr::64.94.129.41/25/eth0
lb1.reachone.com IPaddr::64.94.128.12/24/eth0
lb1.reachone.com IPaddr::64.94.129.70/25/eth0
lb1.reachone.com IPaddr::64.94.129.71/25/eth0
lb1.reachone.com IPaddr::64.94.129.73/25/eth0
lb1.reachone.com IPaddr::64.94.129.77/25/eth0
lb1.reachone.com IPaddr::64.94.129.80/25/eth0
lb1.reachone.com IPaddr::64.94.129.81/25/eth0
lb1.reachone.com IPaddr::64.94.129.23/25/eth0
lb1.reachone.com IPaddr::64.94.129.121/25/eth0
lb1.reachone.com IPaddr::64.94.129.76/25/eth0
lb1.reachone.com IPaddr::64.94.129.82/25/eth0
lb1.reachone.com IPaddr::64.94.129.49/25/eth0
lb1.reachone.com IPaddr::64.94.129.84/25/eth0
lb1.reachone.com IPaddr::64.94.129.109/25/eth0
lb1.reachone.com IPaddr::64.94.129.118/25/eth0
lb1.reachone.com IPaddr::64.94.129.39/25/eth0
lb1.reachone.com IPaddr::64.94.128.13/24/eth0
lb1.reachone.com ospfd
lb1.reachone.com zebra
-----
> Please provide tcpdumps from a client and a director starting right when
you
> initiate a failover (1 minute or so) to right before it's done (1 minute).
Will provide asap... (has to be scheduled)

Thanks Again, and I will provide addt. info as soon as possible, in the mean
time any possible ideas or suggestions would be greatly appreciated.

Billy Olson

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