dennisml at conversis
Jul 17, 2012, 6:28 AM
Post #1 of 1
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[lvs-users] gateway as director and accept_local
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Hi,
so with the CentOS 6.3 kernel the accept_local patch that was introduced
with 2.6.33 has now become available with the main distro kernel.
Has anyone experimented with setting up a gateway system that also acts as
a directly routed LVS system? Previously this wasn't possible because the
returning packets were classified as martians because they had a source IP
that was also configured on the local system which is considered bogus but
now when you set accept_local to 1 you can tell the system to accept such
packets.
I tried this yesterday and while the packets get no longer dropped when
doing a ping from a realserver with the VIP specified as source the moment
I actually set up the balancing on the director and make a request to the
VIP from a client machine the cpu usage in the gateway/director goes to 100%.
AFAICT it seems LVS does seem to get into a loop when the returning packet
arrives on the director. Does anyone have an idea what might be going on
here and how to fix it?
Regards,
Dennis
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