[lvs-users] LVS RR becomes unbalanced after time

Victor Sartori victor at sartori.eti.br
Tue Jul 5 11:59:54 BST 2011


Hi Luc,

these settings are already set on my webservers.

Im not sure, but I think the vmware-tools can make theses "blunders" in
special the baloon driver.... its is a big "shot"..... continuing to
research and investigate

[]´s

Victor

2011/7/5 Luc van Donkersgoed <luc at codingdutchmen.com>

> Hi,
>
> I don't see any mention of segfaults in my logs, but did manage to solve my
> problem. Apparently I forgot some basic configuration on my webservers,
> which screwed up ARP. I don't understand the specifics yet - I will delve
> into that today - but the solution was to add these lines to
> /etc/sysctl.conf:
>
> # Enable configuration of arp_ignore option
> net.ipv4.conf.all.arp_ignore = 1
> net.ipv4.conf.eth0.arp_ignore = 1
> net.ipv4.conf.eth1.arp_ignore = 1
> net.ipv4.conf.bond0.arp_ignore = 1
>
> # Enable configuration of arp_announce option
> net.ipv4.conf.all.arp_announce = 2
> net.ipv4.conf.eth0.arp_announce = 2
> net.ipv4.conf.eth1.arp_announce = 2
> net.ipv4.conf.bond0.arp_announce = 2
>
> And then run sysctl -p
>
> Keep in mind that I have two network interface cards in bonding mode, so
> you probably need to adjust the above lines to match your own setup. Ever
> since applying the above, my cluster is working like sunshine :D
>
> Hope that helps you,
> Luc
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