[Linux-cluster] can't communicate with fenced -1

GS R gsrlinux at gmail.com
Wed Jun 25 03:22:59 UTC 2008


On 6/24/08, Gian Paolo Buono <gpbuono at gmail.com> wrote:

> Hi,
>
> We have two RHEL5.1 boxes installed sharing a
> single iscsi emc2 SAN, whitout fence devices. System is configured
> as a high-availability system of xen guest.
>
> One of the most repeating problems are fence_tool related.
>
>   # service cman start
>   Starting cluster:
>      Loading modules... done
>      Mounting configfs... done
>      Starting ccsd... done
>      Starting cman... done
>      Starting daemons... done
>  Starting fencing... fence_tool: can't communicate with fenced -1
>
>  # fenced -D
>   1204556546 cman_init error 0 111
>
>   # clustat
>   CMAN is not running.
>
>   # cman_tool join
>
>   # clustat
>   msg_open: Connection refused
>   Member Status: Quorate
>     Member Name                        ID   Status
>
>     ------ ----                        ---- ------
>     yoda1                             1 Online, Local
>     yoda2                             2 Offline
>
> Sometimes this problem gets solved if the two machines are rebooted at
>
> the same time. But in the current HA configuration, I cannot guarantee
> two systems will be rebooted at the same time for every problem we
> face. This is my config file:
>
> ###################################cluster.conf####################################
>
> <?xml version="1.0"?>
> <cluster alias="yoda-cl" config_version="2" name="yoda-cl">
>         <fence_daemon clean_start="0" post_fail_delay="0" post_join_delay="3"/>
>
>         <clusternodes>
>                 <clusternode name="yoda2" nodeid="1" votes="1">
>                         <fence/>
>                 </clusternode>
>                 <clusternode name="yoda1" nodeid="2" votes="1">
>
>                         <fence/>
>                 </clusternode>
>         </clusternodes>
>         <cman expected_votes="1" two_node="1"/>
>         <rm>
>                 <failoverdomains/>
>
>                 <resources/>
>         </rm>
>         <fencedevices/>
> </cluster>
> ###################################cluster.conf####################################
> Regards.
>
> Hi

I configured a two node cluster with no fence device on RHEL5.1.
The cluster started and stopped with no issues. The only difference that I
see is that I have used FQDN in my cluster.conf

i.e., <clusternode name="yoda2*.gsr.com*" nodeid="1" votes="1">

Check your /etc/hosts if it has the FQDN in it.

Thanks
Gowrishankar Rajaiyan
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