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Re: [Linux-cluster] Failover IPs and Interfaces

On Tue, 11 Mar 2008, gordan bobich net wrote:

How can I specify in cluster.conf which physical interface the failover domain IPs should be assigned to on each node? I cannot seem to find any documentation on the subject. If anyone can point me in the right direction, that would be most appreciated.

Perhaps it wasn't immediately obvios what I meant here, so I'll expand with an example:

In cluster.conf:
    <failoverdomain name = "private-ip" ordered = "1" restricted = "1">
      <failoverdomainnode name = "host1" priority = "1"/>
      <failoverdomainnode name = "host2" priority = "2"/>
      <ip address = "" monitor_link="1"/>
    <service autostart = "1" domain = "private-ip" name = "myservice">
      <ip ref = ""/>

What I cannot seem to find documented is how to control which physical interface the ip resource is going to be assigned to on fail-over. How can this be defined, and/or inferred, if there are multiple interfaces in the system? Is there an option that allows something like this:

<ip address = "" monitor_link="1" interface="eth3" />


<ip ref = "" interface="eth3" />

The option instead of "interface" is what I am after if there is such a thing. Is there such a thing? If not, how can resource-to-interface binding be defined?



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