|
Ben Hollingsworth escribió:
OK, so I've got my setup nailed down pretty well. This is pair of squid
web proxies on a 2-host LVS running UltraMonkey / HB 2.0.7-8 on RHEL4
(2.6.9). I'm struggling with one more thing, though. With
quiescent=true, if I shut down squid on one box, connections from new
hosts fail over to the other box just fine, but connections from
persistent hosts keep going to the same, dead box. I realize this is as
OK, to solve the problem there are two variables:
/proc/sys/net/ipv4/vs/expire_nodest_conn --> to expire connections
before the protocol timeout. This is to solve the problem when a server
goes down. For example in the UDP protocol the protocol timeout is too high.
/proc/sys/net/ipv4/vs/expire_quiescent_template --> this variable I
think is the variable to solve your problem. With this you timeout your
persistent template when a server goes down.
I don't know what them makes exactly but the first solve my problems.
You could make a test.
Best regards.
intended. If I set quiescent=false, all client communication with the
dead box ceases immediately, which includes cutting off active
connections at the knees. That's not an issue if the squid actually
dies. However, most of our failovers will be due to my own planned
maintenance. In that case, I'd like to allow existing connections
(which may be lengthy downloads) to finish before sending new requests
(even from persistent clients) to the live box. I can't find any way to
do this without hacking the kernel to match a 2-yr-old patch that Horms
published (assuming that even applies to my setup). Most of the info
about this seems to have been written three years ago. Is there a way
to make this work without a custom compile?
------------------------------------------------------------------------
_______________________________________________
LinuxVirtualServer.org mailing list - lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
or go to http://www.in-addr.de/mailman/listinfo/lvs-users
| 