R: [Linux-cluster] CS4 U2 / problem to configure a 3 nodes cluster

[Alain Moulle]

>>Hi
>>
>>>> >>
>>>> >> I'm trying to configure a simple 3 nodes cluster with simple tests
>>>> >> scripts.
>>>> >> But I can't start cman, it remains stalled with this message in
>>>> >> syslog :
>>>> >> Apr 10 11:37:44 s_sys at yack21 ccsd: startup succeeded Apr
>
>> 10 11:38:00
>
>>>> >> s_kernel at yack21 kernel: CMAN 2.6.9-39.5 (built Sep 20 2005
>>>> >> 16:04:34) installed
>>>> >> Apr 10 11:38:00 s_kernel at yack21 kernel: NET: Registered protocol
>>>> >> family 30 Apr 10 11:38:00 s_sys at yack21 ccsd[25004]:
>>>> >> cluster.conf (cluster name = HA_METADATA_3N, version = 8) found.
>>>> >> Apr 10 11:38:00 s_kernel at yack21 kernel: CMAN: Waiting to
>
>> join or form
>
>>>> >> a Linux-cluster Apr 10 11:38:01 s_sys at yack21
>>>> >> ccsd[25004]: Connected to cluster infrastruture
>>>> >> via: CMAN/SM Plugin v1.1.2
>>>> >> Apr 10 11:38:01 s_sys at yack21 ccsd[25004]: Initial status::
>>>> >> Inquorate Apr 10 11:38:32 s_kernel at yack21 kernel: CMAN:
>>>> >> forming a new cluster
>>>> >>
>>>> >> and nothing more.
>>>> >>
>>>> >> The graphic tool dos not detect any error in configuration; I 've
>>>> >> attached my cluster.conf for the three nodes, knowing that
>
>> I wanted
>
>>>> >> two nodes (yack10 and yack21) running theirs applications
>
>> and the 3rd
>
>>>> >> one (yack23) as a backup for yack10 and/or yack21, but I
>
>> don't want
>
>>>> >> any failover between yack10 and yack21.
>>>> >>
>>>> >> PS : I 've verified all ssh connections between the 3
>
>> nodes, and all
>
>>>> >> the fence paths as described in the cluster.conf.
>>>> >> Thanks again for your help.
>>>> >>
>>>> >> Alain
>>>> >>
>
>>
>>
>
>>> >Are you starting the cman on all three nodes in the same
>
>> time? A node
>
>>> >doesn't start until each other node is starting. Timing is
>
>> important during booting.
>>
>
>>> >Leandro
>
>>
>> Hi, no I wasn't ...
>> I've tried now, and this is ok on yack21 and yack23, but not
>> on yack10, is there something wrong in the cluster.conf to
>> explain this behavior ?
>> On yack10 , cman is trying to :
>> CMAN: forming a new cluster
>> but fails with a timeout ...
>>
>> ??
>> Thanks
>> Alain
>> --
>>


>Maybe this time is due to a firewall setup, as already stated on the list. A
>tcpdump from yack10 to the other nodes may help you catch the bug.
>Leandro

No firewall setup on yack10, neither on yack21 nor yack23. Besides
the ssh connections are all valid between the three nodes in all
combinations without passwd request. And still the problem ...
Any other idea ?
Is my cluster.conf correct ?

Besides, with regard to you first answer, I've tested on yack21 and yack23 :
if I start cman only on yack21, it does end in timeout.
And if I start cman quite at the same time on yack21 and yack23, it
works on both nodes.
I haven't found in documentation any recommandation about this point.
Besides, if one node is breakdowned, that mean that we will never be
able to reboot the other node and launch the CS4 again with all
applications ... sounds strange, doesn't it ?

Thanks
Alain Moullé