jmack at wm7d
Feb 24, 2006, 2:58 PM
Views: 1213
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failover with large number (say 1024) of VIPs
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I just got an offlist message from someone whose machines
take 2-3 mins to failover. They bring up 200 VIPs with
ifconfig on the director which is assuming the master role
(and take them down on the one which is assuming the
secondary role). I just ran a loop of 4*254 of `ip addr add
....` followed by `ip addr del ...` which took 10secs in
each direction on a 200MHz machine. It seems that any
production LVS director would be a faster machine and do
1024 IPs in 2-3 secs. I don't know enough about his system
to know why it takes 2-3 mins for 200 IPs.
Do people coordinate the changeover one VIP at a time, or do
you let communication drop for 2-3 secs during a scheduled
changeover?
Do people bring up their VIPs like this or do you have them
up all the time on both directors and run one arp-tables
command to unblock them on one machine?
Thanks Joe
--
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml
Homepage http://www.austintek.com/ It's GNU/Linux!
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failover with large number (say 1024) of VIPs
