[Pacemaker] CMAN and Pacemaker with IPv6
Jan Friesse
jfriesse at redhat.com
Mon Jul 14 08:21:47 UTC 2014
Teerapatr,
> For more information,
>
> these are LOG from /var/log/messages
> ...
> Jul 14 10:28:07 wh00 kernel: : DLM (built Mar 25 2014 20:01:13) installed
> Jul 14 10:28:07 wh00 corosync[2716]: [MAIN ] Corosync Cluster
> Engine ('1.4.5'): started and ready to provide service.
> Jul 14 10:28:07 wh00 corosync[2716]: [MAIN ] Corosync built-in features: nss
> Jul 14 10:28:07 wh00 corosync[2716]: [MAIN ] Successfully read
> config from /etc/cluster/cluster.conf
> Jul 14 10:28:07 wh00 corosync[2716]: [MAIN ] Successfully parsed cman config
> Jul 14 10:28:07 wh00 corosync[2716]: [TOTEM ] Initializing transport
> (UDP/IP Multicast).
> Jul 14 10:28:07 wh00 corosync[2716]: [TOTEM ] Initializing
> transmit/receive security: libtomcrypt SOBER128/SHA1HMAC (mode 0).
> Jul 14 10:28:07 wh00 corosync[2716]: [TOTEM ] The network interface is down.
^^^ This line is important. This means, corosync was unable to find
interface with given IPv6 address. There was regression in v1.4.5
causing this behavior. It's fixed in v1.4.6 (patch is
https://github.com/corosync/corosync/commit/d76759ec26ecaeb9cc01f49e9eb0749b61454d27).
So you can ether apply patch or (recommended) upgrade to 1.4.7.
Regards,
Honza
> Jul 14 10:28:10 wh00 pacemaker: Aborting startup of Pacemaker Cluster Manager
> ...
>
> Te
>
> On Mon, Jul 14, 2014 at 10:07 AM, Teerapatr Kittiratanachai
> <maillist.tk at gmail.com> wrote:
>> Dear Honza,
>>
>> Sorry for late reply.
>> After I have tested with all new configuration.
>> On IPv6 only, and with no altname.
>>
>> I face with error below,
>>
>> Starting cluster:
>> Checking if cluster has been disabled at boot... [ OK ]
>> Checking Network Manager... [ OK ]
>> Global setup... [ OK ]
>> Loading kernel modules... [ OK ]
>> Mounting configfs... [ OK ]
>> Starting cman... corosync died with signal: 6 Check cluster logs for details
>> [FAILED]
>>
>> And, exactly, there are no any enabled firewall, I also configure the
>> Multicast address as manual.
>> Could you advise me the solution?
>>
>> Many thanks in advance.
>> Te
>>
>> On Thu, Jul 10, 2014 at 6:14 PM, Jan Friesse <jfriesse at redhat.com> wrote:
>>> Teerapatr,
>>>
>>>> Hi Honza,
>>>>
>>>> As you said I use the nodename identify by hostname (which be accessed
>>>> via IPv6) and the node also has the altname (which be IPv4 address).
>>>>
>>>
>>> This doesn't work. Both hostname and altname have to be same IP version.
>>>
>>>> Now, I configure the mcast address for both nodename and altname
>>>> manually. The CMAN and Pacemaker can start ad well. But they don't
>>>> communicate to another node.
>>>
>>> PLease make sure (as I've wrote in previous email) your firewall doesn't
>>> block mcast and corosync traffic (just disable it) and switch doesn't
>>> block multicast (this is very often the case). If these are VMs, make
>>> sure to properly configure bridge (just disable firewall) and allow
>>> mcast_querier.
>>>
>>> Honza
>>>
>>>> On node0, crm_mon show node1 offline. In the same way, node one show
>>>> node0 is down. So the split brain problem occur here.
>>>>
>>>> Regards,
>>>> Te
>>>>
>>>> On Thu, Jul 10, 2014 at 2:50 PM, Jan Friesse <jfriesse at redhat.com> wrote:
>>>>> Teerapatr,
>>>>>
>>>>>> OK, some problems are solved.
>>>>>> I use the incorrect hostname.
>>>>>>
>>>>>> For now, the new problem has occured.
>>>>>>
>>>>>> Starting cman... Node address family does not match multicast address family
>>>>>> Unable to get the configuration
>>>>>> Node address family does not match multicast address family
>>>>>> cman_tool: corosync daemon didn't start Check cluster logs for details
>>>>>> [FAILED]
>>>>>>
>>>>>
>>>>> This looks like one of your node is also reachable via ipv4 and ipv4
>>>>> resolving is proffered. Please make sure to set only ipv6 address and
>>>>> try it again. Of course set mcast addr by hand maybe helpful (even-tho I
>>>>> don't believe it will solve problem you are hitting)).
>>>>>
>>>>> Also make sure ip6tables are properly configured and your switch is able
>>>>> to pass ipv6 mcast traffic.
>>>>>
>>>>> Regards,
>>>>> Honza
>>>>>
>>>>>> How can i fix it? Or just assigned the multicast address in the configuration?
>>>>>>
>>>>>> Regards,
>>>>>> Te
>>>>>>
>>>>>> On Thu, Jul 10, 2014 at 7:52 AM, Teerapatr Kittiratanachai
>>>>>> <maillist.tk at gmail.com> wrote:
>>>>>>> I not found any LOG message
>>>>>>>
>>>>>>> /var/log/messages
>>>>>>> ...
>>>>>>> Jul 10 07:44:19 nwh00 kernel: : DLM (built Jun 19 2014 21:16:01) installed
>>>>>>> Jul 10 07:44:22 nwh00 pacemaker: Aborting startup of Pacemaker Cluster Manager
>>>>>>> ...
>>>>>>>
>>>>>>> and this is what display when I try to start pacemaker
>>>>>>>
>>>>>>> # /etc/init.d/pacemaker start
>>>>>>> Starting cluster:
>>>>>>> Checking if cluster has been disabled at boot... [ OK ]
>>>>>>> Checking Network Manager... [ OK ]
>>>>>>> Global setup... [ OK ]
>>>>>>> Loading kernel modules... [ OK ]
>>>>>>> Mounting configfs... [ OK ]
>>>>>>> Starting cman... Cannot find node name in cluster.conf
>>>>>>> Unable to get the configuration
>>>>>>> Cannot find node name in cluster.conf
>>>>>>> cman_tool: corosync daemon didn't start Check cluster logs for details
>>>>>>> [FAILED]
>>>>>>> Stopping cluster:
>>>>>>> Leaving fence domain... [ OK ]
>>>>>>> Stopping gfs_controld... [ OK ]
>>>>>>> Stopping dlm_controld... [ OK ]
>>>>>>> Stopping fenced... [ OK ]
>>>>>>> Stopping cman... [ OK ]
>>>>>>> Unloading kernel modules... [ OK ]
>>>>>>> Unmounting configfs... [ OK ]
>>>>>>> Aborting startup of Pacemaker Cluster Manager
>>>>>>>
>>>>>>> another one thing, according to the happened problem, I remove the
>>>>>>> AAAA record from DNS for now and map it in to /etc/hosts files
>>>>>>> instead, as shown below.
>>>>>>>
>>>>>>> /etc/hosts
>>>>>>> ...
>>>>>>> 2001:db8:0:1::1 node0.example.com
>>>>>>> 2001:db8:0:1::2 node1.example.com
>>>>>>> ...
>>>>>>>
>>>>>>> Is there any configure that help me to got more log ?
>>>>>>>
>>>>>>> On Thu, Jul 10, 2014 at 5:06 AM, Andrew Beekhof <andrew at beekhof.net> wrote:
>>>>>>>>
>>>>>>>> On 9 Jul 2014, at 9:15 pm, Teerapatr Kittiratanachai <maillist.tk at gmail.com> wrote:
>>>>>>>>
>>>>>>>>> Dear All,
>>>>>>>>>
>>>>>>>>> I has implemented the HA on dual stack servers,
>>>>>>>>> Firstly, I doesn't deploy IPv6 record on DNS yet. The CMAN and
>>>>>>>>> PACEMAKER can work as normal.
>>>>>>>>> But, after I create AAAA record on DNS server, i found the error that
>>>>>>>>> cann't start CMAN.
>>>>>>>>>
>>>>>>>>> Are CMAN and PACEMAKER support the IPv6?
>>>>>>>>
>>>>>>>> I don;t think pacemaker cares.
>>>>>>>> What errors did you get?
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
>>>>>>>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>>>>>>>>
>>>>>>>> Project Home: http://www.clusterlabs.org
>>>>>>>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>>>>>>>> Bugs: http://bugs.clusterlabs.org
>>>>>>>>
>>>>>>
>>>>>> _______________________________________________
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>>>>>>
>>>>>> Project Home: http://www.clusterlabs.org
>>>>>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>>>>>> Bugs: http://bugs.clusterlabs.org
>>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>>>>>
>>>>> Project Home: http://www.clusterlabs.org
>>>>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>>>>> Bugs: http://bugs.clusterlabs.org
>>>>
>>>> _______________________________________________
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>>>>
>>>> Project Home: http://www.clusterlabs.org
>>>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>>>> Bugs: http://bugs.clusterlabs.org
>>>>
>>>
>>>
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>>>
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>>> Bugs: http://bugs.clusterlabs.org
>
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>
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> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://bugs.clusterlabs.org
>
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