How to configure High availability in Netscaler 10.5

How to configure High availability

High availability is an key part for any infrastructure devices and for Net scaler it is more important because as a part of Network device it's playing major role within organization. Here i am going to explain about how to provide high availability for netscaler devices and what are the key points we need to keep in mind during HA configuration.

- First point we need to take complete backup of current configuration of running netscaler. (See above "How to take backup section for details").

- Change the configuration of both Netscaler and force fully define them as primary and secondary. 

By doing those activities we prevent our-self in case some thing goes wrong during HA configuration. In live scenarios i seen some times peoples don't configure things in correct way due to which secondary netscaler configuration replicated with primary one and make that blank as well so to prevent our self in such situation i request to do preventive actions before start high availability configuration.

As a part of first preventive action of taking backup i already explained the process, For second preventive action of define priority manually navigate to System then High Availability then select Node and press right click and select edit,

On the new page set Hign availability option as "Stay Primary" and in same way on secondary netscaler node select option "Stay Secondary"

Now all set to start configuring netscaler high availability. To configure that open management console of primary NS and navigate to System then "High Availability" after that click on add button and give the information of secondary netscaler and click on ok.

After that you would be able to see both the net scalers are visible under high availability node section and at the same time you can see that secondary node replication is also in progress. Once replication would be completed it will strat prompting as success.

To verify we can check some of the entries in secondary node like SNIP's. Once we satisfied that replication has been successfully completed then on primary and secondary node we will again navigate to System then High Availability then select Node and press right click and select edit option and change set High availability option as "Enable (Active participant in HA)". 

Hurry!!!!! our netscaler high availability configuration is done.

To test we can do manual failover as well. to do that Navigate to High Availability section and click on action tab and select option "Force Failover"