[ClusterLabs] RGManager: no migration on kernel panic

[Stanislav Kopp]

Hi Digimer,

I may be wrong but if set "stonith-enabled=false" and
"no-quorum-policy=ignore " in pacemaker, resource migration works fine
with kernel panic.

Best,
Stan

2015-09-01 18:03 GMT+02:00 Digimer <lists at alteeve.ca>:
> You must have fencing configured. DLM blocks until fenced confirms
> successful fence and rgmanager uses DLM locks. Even in pacemaker,
> fencing is required to prevent split-brains.
>
> On 01/09/15 11:55 AM, Stanislav Kopp wrote:
>> Hi all,
>>
>> I'm testing now "corosync+cman+rgmanager" on Debian Jessie (since
>> Pacemaker is not in repos), I'm running two nodes cluster with simple
>> VIP resource. Resource migration work pretty well if I gracefully
>> shutdown the active node, but if try to kill the node with simulated
>> kernel panic (echo c > /proc/sysrq-trigger) the VIP resource will not
>> be migrated even if "clustat" says the node is "offline". I've fome
>> some errors in fenced.log
>>
>> "fence rgmanager02 dev 0.0 agent none result: error no method"
>>
>> So if I understand it right, since fencing is not working rgmanager
>> does nothing in order to not make it worse, is that correct? If yes,
>> can I force it do not care about fencing? (I know that is general not
>> a good idea)
>>
>> My cluster.conf for more information:
>> ########################################
>> <?xml version="1.0"?>
>> <cluster name="mycluster" config_version="15">
>> <cman two_node="1" expected_votes="1" transport="udpu"/>
>> <clusternodes>
>> <clusternode name="rgmanager01" nodeid="1">
>> <fence/>
>> </clusternode>
>> <clusternode name="rgmanager02" nodeid="2">
>> <fence/>
>> </clusternode>
>> </clusternodes>
>> <fencedevices/>
>> <rm>
>> <failoverdomains>
>> <failoverdomain name="domainarg" ordered="0" restricted="0">
>> <failoverdomainnode name="rgmanager02" priority="1"/>
>> <failoverdomainnode name="rgmanager02" priority="1"/>
>> </failoverdomain>
>> </failoverdomains>
>> <resources>
>> <ip address="192.168.122.10" monitor_link="1"/>
>> </resources>
>> <service autostart="1" domain="domainarg" exclusive="1" name="HA_IP"
>> recovery="relocate">
>> <ip ref="192.168.122.10"/>
>> </service>
>> </rm>
>> </cluster>
>> ################################################
>>
>>
>> Thanks,
>> Stan
>>
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>
>
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> Digimer
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