[Pacemaker] CMAN and Pacemaker with IPv6

[Jan Friesse]

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?
>>>>>
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>>>>>
>>>
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>>
>>
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> 
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