Stopping order of the resources of a resource group

SUSE Linux Enterprise Extensions SLES High Availability Extension
1

Hi Folks!
I have a query related to the Failover of the resource Group from one node to another.
The query is:

1)Do the resources stop all at one? Or do they stop sequentially in case of Resource Group failover?

  1. And in case of retry, in what order do the resources stop and start?

TIA!

2

[QUOTE=pri14bal;59769]Hi Folks!
I have a query related to the Failover of the resource Group from one node to another.
The query is:

1)Do the resources stop all at one? Or do they stop sequentially in case of Resource Group failover?

  1. And in case of retry, in what order do the resources stop and start?

TIA![/QUOTE]

Hello pri14bal;

Great question. I had nearly the same question. Have a look at;

https://forums.suse.com/showthread.php?14266-HA-order-lost-when-group-made

and for more info at

https://www.golinuxcloud.com/understanding-resource-group-constraints-cluster-examples/

it states:

Resources in a group are always kept together on the same node, and they will also be started in the order in which they are listed in the group.

I suspect it stops the resources in order also.

I trust this is helpful.

Have a good day.

3

Actually the group is just a colocation and order constraint between the resources in the group - they start in the order they have been assigned in the group and are stopped backwards.
All resources in a group have a mandatory colocation constraint → they must run together.

If you need some resources to start in parallel, you have to remove them from the group and then define the order and colocation constraints , but keep in mind that the more resources you define , the more rules you need to create.