What to do after a failover? Another node has become central, do we need to change this?

[jblomqvist]

Hello,

We had a failover two days ago in our two node environment production environment.

Our second node has now become the central node when I look in the QMC.

What do we need to do after this type of failover? Do we need to change this back to what it was before the failover, i.e. make the central node, central again?

If so, how do you make it central node again?

Are there any special considerations to make?

[Giuseppe_Novello · Accepted solution]

First thing would, try to figure out why it failed over, fix that issue to avoid the problem in the future, you may leave it as is or you  might want to return it to be central to be central again ( anyways under QMC> node, the node name is "CENTRAL")  and to return it, you can use REST APIs, if you savvy with them here is the way to do so:

https://help.qlik.com/en-US/sense/June2019/Subsystems/PlanningQlikSenseDeployments/Content/Sense_Dep...

Read under " Manually migrating the central node" OR

Once central node is up and running fine, keep this one service up, shut down the current central node services ( the rim that just became central as failover) and any other RIM that are marked as "failover", wait the timeout triggers ( by default it 10 mins) and once it triggers it will switch automatically to your original central node.  

BR

Gio