[Pacemaker] CMAN and Pacemaker with IPv6

Teerapatr Kittiratanachai maillist.tk at gmail.com
Mon Jul 14 11:46:31 UTC 2014 

Honza,

How do I include the patch with my CentOS package?
Do I need to compile them manually?

TeEniGMa

On Mon, Jul 14, 2014 at 3:21 PM, Jan Friesse <jfriesse at redhat.com> wrote:
> 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
>>>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> 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
>>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> 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
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> 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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>>>> 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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>> 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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> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>
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