[Linux-cluster] Is there any backup heartbeat channel

Juan Ramon Martin Blanco robejrm at gmail.com
Wed Aug 12 09:21:00 UTC 2009

2009/8/12 Hakan VELIOGLU <veliogluh at itu.edu.tr>

> Hi list,
> I am trying a two node cluster with RH 5.3 on Sun X4150 hardware. I use a
> private network for heartbeat channel and fence_ipmilan for fencing the two
> node. When I unplug the heartbeat channel cable, both cluster nodes shut
> themselves down with fence_ipmilan.
> I think the single point of failure for this design is private heartbeat
> channel. I made a search on the web and there seems no backup heartbeat
> channel (like LVS) on cluster suite.
> How can I overcome this single point of failure problem?
> One solution is I think, bonding heartbeat interfaces, however I use all
> available interfaces and there is no extra interface for private heartbeat
> channel. For this reason this solution doesn't suit me.
Why do you need a private heartbeat channel? Configure two network
interfaces in a bonding one, connect the two of them to two different
switches (with a redundant interconnection), make sure switches let
multicast traffic through. Configure bonding interface IP to fit your needs.


> Anybody has an idea to overcome heartbeat channel failure problem.
> Hakan Velioğlu
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