[Linux-cluster] fence manual

[Xavier Montagutelli]

On Wednesday 21 January 2009, Marcelo Gomes wrote:
> Hi!
>
>
> (Sorry for my English)
>
> I have a redhat (Centos 5.1) cluster with gfs and the fence is manual.
> What's the command to remove some computer from de cluster? and what is the
> command to go back this computer in the cluster ?

What do you mean by "remove" ?

If you want to fence server1, you can :
  - use the command "fence_node server1" on server2
  - stop server1
  - use the command "fence_ack_manual -n server1" on server2
  - restart server1 to make it join the cluster again

If you want to really remove a server from the cluster, you can remove the 
entry from the cluster.conf file (for instance with the command "ccs_tool 
delnode server1")

If you want to stop one node : you can simply stop the services, in the right 
order ? "service gfs stop ; service clvmd stop ; service rgmanager stop ; 
service cman stop" ?

>
>
> Thanks
>
> Marcelo
>
> My cluster.conf
>
> <?xml version="1.0"?>
> <cluster config_version="7" name="cluster">
>     <fence_daemon post_fail_delay="0" post_join_delay="3"/>
>     <clusternodes>
>         <clusternode name="server1" nodeid="1" votes="1">
>             <fence>
>                 <method name="1">
>                     <device name="Manual" nodename="server1"/>
>                 </method>
>             </fence>
>         </clusternode>
>         <clusternode name="server2" nodeid="2" votes="1">
>             <fence>
>                 <method name="1">
>                     <device name="Manual" nodename="server2"/>
>                 </method>
>             </fence>
>         </clusternode>
>         <clusternode name="server3" nodeid="3" votes="1">
>             <fence>
>                 <method name="1">
>                     <device name="Manual" nodename="server3"/>
>                 </method>
>             </fence>
>         </clusternode>
>         <clusternode name="server4" nodeid="4" votes="1">
>             <fence>
>                 <method name="1">
>                     <device name="Manual" nodename="server4"/>
>                 </method>
>             </fence>
>         </clusternode>
>         <clusternode name="server5" nodeid="5" votes="1">
>             <fence>
>                 <method name="1">
>                     <device name="Manual" nodename="server5"/>
>                 </method>
>             </fence>
>         </clusternode>
>     </clusternodes>
>     <cman/>
>     <fencedevices>
>         <fencedevice agent="fence_manual" name="Manual"/>
>     </fencedevices>
>     <rm>
>         <failoverdomains/>
>         <resources/>
>     </rm>
> </cluster>



-- 
Xavier Montagutelli                      Tel : +33 (0)5 55 45 77 20
Service Commun Informatique              Fax : +33 (0)5 55 45 75 95
Universite de Limoges
123, avenue Albert Thomas
87060 Limoges cedex