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Re: [Cluster-devel] [PATCH] resource-agents: Find any descendant IP resource of a service



Am 28.09.2011 22:35, schrieb Lon Hohberger:
> On 09/28/2011 07:19 AM, Michael Bunk wrote:
>> Not just immediate children.  This fixes errors in sylog like this:
>>
>> rgmanager[xxxx]: Looking For IP Addresses [apache:apache]>  Failed -
>> No IP Addresses Found
> 
> I -think- it was intentional; if it's not at the top level, you can do
> things like:
> 
>   <service>
>     <apache>
>       <ip/>
>     </apache>
>   </service>
> 
> The // will then find that IP, but the configuration generated by apache
> resource agent will be incorrect and cause the Apache instance to fail
> to start: it will try to bind to the IP address.
> 
> I suppose that's a degenerate case, however.

Yes, that is pathological... but our case - which worked in RHEL 4 -
looks like this:

<service>
  <script ref="tiebreaker">
     <script file="/etc/cluster/drbd0" name="drbd0" ...>
        <fs device="/dev/drbd0" ...>
          <ip ...>
            <apache/>
          </ip>
        </fs>
      </script>
    </script>
</service>

It doesn't feel right to make the ip resource a sibling of the
tiebreaker script.

If <ip> resources are required to be put directly under <service>, then
the docs (without having read them every word) should mention this and
the XML schema for cluster.conf should enforce it.

Michael


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