What happens to users connection if a node is down/being restarted

[Steve Wiseman]

If a user has logged in and is happily using ServiceNow and then the node they are on has a problem or is restarted what happens to any subsequent transaction requests they make? Will the ServiceNow Load balancer handle this and direct the transaction to another active node automatically? Will the user notice anything?

[corina]

Hello,

Yes, it is an idea.

I think you are aware but I am mentioning though: this is available for the sessions already created.

If you restart a node the sessions that have not been created will be automatically redirected to the other node ( most customer would have at least 2 nodes)

[Steve Wiseman]

Yes, it seems like the ideal scenario is that the Load balancer is aware of a node being unavailable, which as you say it can already do, and if a user with an existing session on the unavailable node is received it is redirected to a node that is up and the transaction is successfully processed along with the user session being moved to the new node. I am not sure how the Load balancer handles this scenario at the moment...perhaps there is just some sort of standard redirect to the homepage?

[corina]

So now the load balancer would only transfer the uncreated sessions on the other node automatically. The ones not finished in the moment of restart will be lost and redirected to the homepage indeed.

So   in an ER you could ask for a auto-save function for the sessions that have been created already ( like unsubmitted forms etc), or a way to redirect also the created sessions along with the uncreated sessions.   However, please note that submitting an ER does not necessarily mean it will be   implemented in the future releases, but it can bring improvement ideas that are always welcome.

[Steve Wiseman]

Thanks for your help Corina, I'll get an ER logged for it.

[cvelasquez]

hi Corina:

Does this event gets recorded in any log by any chance (i.e. the node going down)?

Thanks Carlos