[ClusterLabs] Safe way to stop pacemaker on both nodes of a two node cluster

[Roger Zhou]

On 10/21/19 12:28 AM, Valentin Vidić wrote:
> On Sun, Oct 20, 2019 at 09:24:31PM +0530, Dileep V Nair wrote:
>> 	I am confused about the best way to stop pacemaker on both nodes of a
>> two node cluster. The options I know of are
>> 1. Put the cluster in Maintenance Mode, stop the applications manually and

To put the whole cluster in the maintenance node is a reliable approach 
to shutdown pacemaker gracefully and leave the applications running 
behind. It fits the use case per the title of this thread.

>> then stop pacemaker on both nodes. For this I need the application to  be
>> stopped manually
>> 2. Stop pacemaker on one node, wait for all resources to come up on second
>> node, then stop pacemaker on second node. This might cause a significant
>> delay because all resources has to come up on second node.
>>
>> 	Is there any other way to stop pacemaker on both nodes gracefully ?
> 
> Maybe this pacemaker option can help?
> 
> stop-all-resources FALSE Should the cluster stop all resources?
> 

To shutdown the applications all together with pacemaker, this option is 
useful. But be caution about stop failure of the application migrate 
trigger stonith. "stonith-enabled=false" could remove such risk.

Cheers,
Roger