[lvs-users] Master - backup synchronization verification

Rumen Bogdanovski rumen at voicecho.com
Tue Nov 6 17:41:45 GMT 2007


1. on the master director:
# ipvsadm -l --daemon
and verify the master daemon is running on the appropriate interface
with a correct syncid.
2. on the backup:
# ipvsadm -l --daemon 
and verify the backup daemon is running.
3. if everything looks ok create several connections and monitor
# ipvsadm -lnc
on the backup, if the connections are listed everything is fine.

Btw try again tcpdump while creating new connections or while generating
traffic on the old ones. Only then you will see sync packets. 


On Tue, 2007-11-06 at 18:24 +0100, Adrian Chapela wrote:
> Hello,
> 
> I want to verify if my Master server is sending connection state to my 
> backup server. The config say yes, but I don't think the same. If I 
> filter traffic with tcpdump (tcpdump -i eth0 ether multicast) I see the 
> VRRP heartbeats of my keepalived application but I don't see the packets 
> with:
> 
> <Protocal, CIP:CPort, VIP:VPort, RIP:RPort, Flags, State>
> 
> How can I verify if synchronization is running ??
> 
> 
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