Pulse - e-mail notification and external script?

[Alessandro Vercelli]

I could be wrong, but lvs doesn't implement failover notifications.

Using self-made scripts, you can check ipvsadm output; on the primary, you see (for example):

# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  lbwww:http rr
  -> <real_node01>:http               Route   1      0          0         
  -> <real_node01>:http               Route   1      0          0         

On the slave director, instead:

# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn

You can build a monitoring script which checks the output and sends a message.

Good work,

Alessandro

>Hi,
>
>I have the beautiful duty to set up a 2-node loadbalancer.
>Unfortunately the client has some requests I can't implement for the
>first sight:
>
>- having e-mail notification about master/backup failover
>- starting external scripts when failover happens
>
>Is there an easy way or unofficial, unsupported solution for the
>requirements above?
>
>Best regards,
>
>-- 
>László Béres            Unix system engineer
>http://www.google.com/profiles/beres.laszlo
>
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