[Pacemaker] Newbie question

Dominik Klein dk at in-telegence.net
Thu May 14 09:17:06 EDT 2009


Sorry, I misunderstood your question. When you said "pull the plug" i
thought of the network connection and that is what pingd could help you
with.

If you pull the power plug, you shoud probably look into what beekhof
told you.

Sorry again,
Dominik

Dominik Klein wrote:
> Hi Mark
> 
> The keyword you're looking for is "pingd".
> 
> This example should get you going:
> http://www.clusterlabs.org/wiki/Example_configurations#Failover_IP__Service_in_a_Group_running_on_a_connected_node
> 
> Regards
> Dominik
> 
> Mark Schenk wrote:
>> Hello All,
>>
>>  I'm new to pacemaker so please forgive me if this is in a faq
>> somewhere, I haven't been able to find it!
>> I am trying to set up a failover config for mysql using the following
>> setup:
>>
>> primitive mysqlvip ocf:heartbeat:IPaddr params ip="xx.xx.xx.xx"
>> primitive mysqlfs ocf:heartbeat:Filesystem params device="-L mysql"
>> directory="/var/lib/mysql" fstype="ext3"
>> primitive mysqlserver ocf:heartbeat:mysql params
>> binary="/usr/bin/mysqld_safe" op monitor interval="60s" timeout="30s"
>> primitive st-null stonith:null params hostlist="mysql1 mysql2"
>> group mysqlservice mysqlvip mysqlfs mysqlserver
>> clone fencing st-null
>> location mysql1loc mysqlservice 200: mysql1
>> location mysql2loc mysqlservice 150: mysql2
>> colocation mysql_ip_with_fs inf: mysqlvip mysqlfs
>> colocation mysql_server_with_fs inf: mysqlserver mysqlfs
>> order mysql_fsbeforeserver inf: mysqlfs mysqlserver
>>
>> And it looks to be working great. When I start the configuration three
>> resources are started on node mysql1. When I switch off node1 by
>> shutting down the heartbeat service I can see all my resources moving
>> over to node mysql2. However when I pull the plug on node mysql1 by
>> switching it off, my services are not moving over. Instead my services
>> are listed as having been started on node mysql1 (which is down!). This
>> is the output of crm_mon -r:
>>
>>
>> ============
>> Last updated: Thu May 14 14:32:46 2009
>> Current DC: nfs2 (e588fc86-92d8-4658-a394-3e031171bcd0) - partition with
>> quorum
>> Version: 1.0.3-b133b3f19797c00f9189f4b66b513963f9d25db9
>> 6 Nodes configured, unknown expected votes
>> 2 Resources configured.
>> ============
>>
>> Node mysql1 (ea3da999-829d-4042-a5d5-9ee0ad27f989): UNCLEAN (offline)
>> Online: [ apa1 apa2 mysql2 nfs1 nfs2 ]
>>
>> Full list of resources:
>>
>> Resource Group: mysqlservice
>>    mysqlvip    (ocf::heartbeat:IPaddr):        Started mysql1
>>    mysqlfs     (ocf::heartbeat:Filesystem):    Started mysql1
>>    mysqlserver (ocf::heartbeat:mysql):   Started mysql1
>> Clone Set: fencing
>>        Stopped: [ st-null:0 st-null:1 st-null:2 st-null:3 st-null:4
>> st-null:5 ]
>>
>> I must be missing something but I haven't yet found it.
>>
>> Any pointers would be appreciated.
>>
>> Thanks,
>>  Mark
>>
>>
>> ------------------------------------------------------------------------
>>
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>> Pacemaker at oss.clusterlabs.org
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> 
> 
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