NSM Extended HA synchrone failover Device- and GUI-server

[nicocallens]

Hi,

A question raised at my side, if it is possible to setup a synchrone failover of the Device- and GUI-server in a NSM extended HA setup (4 physical servers, 2 sites). The idea is that when a failover occurs of one of the servers (device or GUi), the other server automatically fails over together with it. So both primary device- and GUI-server always reside on the same site. This to prevent that the communication between the device- and GUI-server  runs over a WAN link. Is there a way to achieve this?

Thanks for your help.

regards,

Nico

[CN]

By default that is not possible. It would be a manual operation.

You will need to setup some scripts that would see which server is active and based on that you will need to shutdown the processes.

Assuming

GUI1 & Dev 1 are Primary

GUI 2 & Dev 2 are Standby

GUI 1 goes down, then the GUI 2 comes up, Dev 1 connects to GUI 1.

At this stage, the script checks and sees this and shutsdown Dev1 such that Dev 2 becomes Active.

Thanks,
Chandra

[nicocallens]

Hi,

Thanks for this information. Are there examples for these scripts available?

Thanks in advance,

regards,

Nico

[CN]

Nico,

The scripts are executed as a part of the HA Server process.

Thanks,
Chandra