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On Tue, 30 Jan 2007, Matthias Saou wrote:
traffic, the exact same issue as with the ServerIron happened!
Symptoms :
- The virtual IP address no longer responds on port 80, it times out
- The real server having problems gets REALLY overloaded
perhaps you should ask about this on the keepalived mailing
list. There should be a hysteresis that stops the realserver
flapping.
- All other 5 real servers no longer receive any traffic
- ipvsadm show no new active or inactive connections (counters stay the
same), only the persistent connections counters decrease slowly (as
expected since there are no new connections...)
never seen this before. The other realservers should be
receiving packets just fine unless something else is jammed
(eg the upstream router is overloaded with icmp unreachable)
I would like to have tried some kind of "keep the real server disabled
for n seconds when it's detected as down" in order to keep the check
from flip-flopping like this, but there is no such setting in
keepalived AFAICS.
I'm surprised it's not in there. Ask ALexandre about it.
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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