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nicocallens
Posts: 2
Registered: ‎09-05-2008
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NSM Extended HA synchrone failover Device- and GUI-server

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

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Recognized Expert
CN
Posts: 316
Registered: ‎10-28-2008

Re: NSM Extended HA synchrone failover Device- and GUI-server

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

Visitor
nicocallens
Posts: 2
Registered: ‎09-05-2008
0

Re: NSM Extended HA synchrone failover Device- and GUI-server

Hi,

 

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

 

 

Thanks in advance,

 

regards,

 

Nico

Recognized Expert Recognized Expert
Recognized Expert
CN
Posts: 316
Registered: ‎10-28-2008
0

Re: NSM Extended HA synchrone failover Device- and GUI-server

Nico,

 

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


Thanks,
Chandra

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