[Linux-cluster] Problems with failover and services

[Robert Peterson]

Jonathan Daniels wrote:
> Hi Linux Clusterers,
>
> I have set up the following cluster environment:
>
> 2 x HP DL385, with RedHat EL4 Update 3. These are the clustered nodes
> RedHat Cluster Suite 4 on each node
> Apache 2.2.2 on each node
> A dummy daemon on each node
>
> Initial problem:
>
> RHEL4 U3 kernel version 2.6.9-34
> CMan kernel/headers 2.6.9-43.8
>
> I created a simple 2 node cluster running Apache httpd server. When it 
> started up as normal the virtual IP was in place and the apache daemon 
> was running on the 'owning' server. However whenever I failed over (by 
> shutting down network services), the floating IP doesn't get assigned 
> to the standby server, and the apache daemon never starts on that 
> standby server.
>
> I was also having deadlocks between CMan and RGManager and found that 
> this was due to a known and fixed bug in RHEL4U3 and Cman so I 
> upgraded them to the following:
>
> RHEL4 U3 kernel version 2.6.9-34.0.1
> CMan kernel/headers 2.6.9-43.8.3
>
> Now I start up the "system-cluster-config" and see no services at all. 
> I also removed GFS but I have known RHCS to run without GFS, and in 
> any case the two apache servers and dummy daemons do not share storage 
> - I simply want to perform the failover initially.
>
> Anyone have any workarounds?
>
> Many thanks,
> Jon
>
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>
Hi Jon,

You may also be another victim of the init-scripts-not-returning-zero thing.
See: http://sources.redhat.com/cluster/faq.html#rgm_wontrestart

Regards,

Bob Peterson
Red Hat Cluster Suite