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Jeff Rooney wrote:
Both methods appear to work as I hoped.
Good.
Ramon: you where exactly right, I was following some documentation sent
over with some load balancers that I am experimenting with. Unfortunatly
their tech staff didn't have any real options for us other than blocking
the arp responses via ebtables.
Mmmm interesting tech support, out of curiosity what loadbalancers are
you using ?
Currently I am working with the load master series from Kemp
Technologies. I am also going to be trying Coyote Point as well, we
still haven't decided which route to take.
Not sure why I didn't think about using
the dummy interface instead of the loopback...guess its just been that
sort of day for me =)
I have them too (those days), trying to ram the square block through the
round hole.... In some cases it even works :-)
Thanks again for your help Ramon and RijilV.
You're welcome.
Word of warning: If you lose the noarp option on one of the real-servers
you will see very weird erratic behaviour which can be hard to debug.
Depending on the load you push through the loadbalancer the realserver
which sends an arp will die immediately or slowly whilst generating
weird bugs in your app.
Best way to check: login with ssh on the vip
Thanks for the heads up...I am actually probably still going to end up
running ebtables to filter the outbound arp responses from the vip
addresses just to be safe.