[Pacemaker] Move DRBD master

[Vadym Chepkov]

On Oct 19, 2010, at 3:13 AM, Dan Frincu wrote:

> Vadym Chepkov wrote:
>> Hi,
>> 
>> What is the crm shell command to move drbd master to a different node?
>>  
> # crm resource help migrate
> 
> Migrate a resource to a different node. If node is left out, the
> resource is migrated by creating a constraint which prevents it from
> running on the current node. Additionally, you may specify a
> lifetime for the constraint---once it expires, the location
> constraint will no longer be active.
> 
> Usage:
> ...............
>       migrate <rsc> [<node>] [<lifetime>]
> 
> crm resource migrate ms_drbd_storage
> 
> WARNING: Creating rsc_location constraint 'cli-standby-ms_drbd_storage' with a score of -INFINITY for resource ms_drbd_storage on cluster1.
>       This will prevent ms_drbd_storage from running on cluster1 until the constraint is removed using the 'crm_resource -U' command or manually with cibadmin
>       This will be the case even if cluster1 is the last node in the cluster
>       This message can be disabled with -Q
> 
> 
> This also made me to remind that I was wondering, is there a way to
> demote one instance of multi-master ms resource away from particular
> node (forcibly switch it to a slave state on that node). I didn't find
> the answer too. Is it possible with crm shell?
> 
> Same as above, just specify the node in the command.
> 

Have you actually tried it? This command doesn't work for this case.


> Regards,
> 
> Dan
>> Thank you,
>> Vadym
>> 
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>>  
> 
> -- 
> Dan FRINCU
> Systems Engineer
> CCNA, RHCE
> Streamwide Romania
> 
> 
> _______________________________________________
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> 
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker