[Linux-cluster] gfs2 and SAN setup

[Xavier Montagutelli]

On Tuesday 29 June 2010 00:20:26 Jeremiah D. Jester wrote:
> Hi Jeff,
> 
> 
> 
> Thanks for your reply. Our two servers are donuts (server1) and coffee
>  (server2)  have been configured with CMAN but the outcome isn't quite what
>  we expect. On donuts a 'clustat' gives us some errors.
> 
> 
> 
> [root at donuts ~]# clustat
> 
> Cluster Status for ngs @ Mon Jun 28 15:14:15 2010
> 
> Member Status: Quorate
> 
> 
> 
> Member Name                                                ID   Status
> 
> ------ ----                                                ---- ------
> 
> donuts.microslu.washington.edu                                 2 Online,
>  Local
> 
> Node1
> 
>                                                          1 Offline,
>  Estranged
> 
> 
> 
> My cluster.conf file reads as following on this machine.
> 
> 
> 
> [root at donuts ~]# cat  /etc/cluster/cluster.conf
> 
> <?xml version="1.0"?>
> 
> <cluster alias="ngsCluster" config_version="7" name="ngs">
> 
>         <fence_daemon post_fail_delay="0" post_join_delay="3"/>
> 
>         <clusternodes>
> 
>                 <clusternode name="coffee.microslu.washington.edu"
>  nodeid="1" votes="1">
> 
>                         <fence/>
> 
>                 </clusternode>
> 
>                 <clusternode name="donuts.microslu.washington.edu"
>  nodeid="2" votes="1">
> 
>                         <fence/>
> 
>                 </clusternode>
> 
>         </clusternodes>
> 
>         <cman/>
> 
>         <fencedevices/>
> 
>         <rm>
> 
>                 <failoverdomains/>
> 
>                 <resources/>
> 
>         </rm>
> 
> </cluster>
> 
> 
> 
> However, when I try to do the same on coffee, I am unable to start cman.
>  I've copied donuts cluster.conf file to  this machine but gets overwritten
>  with a cluster.conf file that just has 'donuts' in it every time I try to
>  restart CMAN.
> 
> 
> [root at coffee cluster]# clustat
> 
> Could not connect to CMAN: Connection refused
> 
> [root at coffee cluster]# /etc/init.d/cman start
> 
> Starting cluster:
> 
>    Loading modules... done
> 
>    Mounting configfs... done
> 
>    Starting ccsd... done
> 
>    Starting cman... failed
> 
> cman not started: Can't find local node name in cluster.conf

I don't understand why your local copy of cluster.conf gets overwritten on 
coffee when you start cman.

10 cents : make sure the "hostname" command returns the fully qualified domain 
name, as appears in your cluster.conf file

Also make sure everything is ok in the /etc/hosts file

Perhaps you can also stop everything, increment the version number, copy the 
"good" file on your nodes and restart simultanously cman on both nodes ?

>  /usr/sbin/cman_tool: aisexec daemon didn't start
> 
>                                                            [FAILED]
> 
> 
> 
> 
> 
> Thanks!
> 
> JJ
> 
> 
> 
> -----Original Message-----
> From: linux-cluster-bounces at redhat.com
>  [mailto:linux-cluster-bounces at redhat.com] On Behalf Of Jeff Sturm Sent:
>  Monday, June 28, 2010 2:46 PM
> To: linux clustering
> Subject: Re: [Linux-cluster] gfs2 and SAN setup
> 
> > From: linux-cluster-bounces at redhat.com
> 
> [mailto:linux-cluster-bounces at redhat.com] On Behalf Of Jeremiah D.
> 
> Jester
> 
> > Sent: Monday, June 28, 2010 5:28 PM
> >
> > To: linux-cluster at redhat.com
> >
> > Subject: [Linux-cluster] gfs2 and SAN setup
> >
> >
> >
> > [root at coffee cluster]# mount -o acl -t gfs2 /dev/sdd /vol10
> >
> > /sbin/mount.gfs2: can't connect to gfs_controld: Connection refused
> 
> Make sure CMAN is running on all nodes, and all nodes have successfully
>  joined the cluster.
> 
> 
> 
> -Jeff
> 
> 
> 
> 
> 
> 
> 
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-- 
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