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<p style="text-align: left">To add to my previous blog post "Netscaler Tips and Tricks" viewed here (<a href="http://blogs.egroup.jasonmangone.com/?p=3393">http://blogs.egroup.jasonmangone.com/?p=3393</a>),  I thought I would throw in some notes on how to configure HA on a pair of Netscaler appliances. This procedure is very simple and with the tips listed below it should take most questions out of the process and pave the way for a smooth delivery.  <!--more--></p>
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<p style="text-align: left">Here goes!</p>
<p style="text-align: left">Switch to the appliance that you want to act as the Primary Appliance.</p>
<p style="text-align: left"> Expand System and click on <strong>High Availability</strong></p>
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Double click on the IP information to open up the High Availability properties dialog to configure the node</p>
<p style="text-align: left">Select the check box “<strong>STAY PRIMARY</strong>” and click OK</p>
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<p style="text-align: left">The node state will then change to <strong>STAY PRIMARY</strong></p>
<p style="text-align: left"><a href="http://blogs.eGroup-us.com/wp-content/uploads/2011/02/3.gif"><img class="alignnone size-large wp-image-3408" src="http://blogs.eGroup-us.com/wp-content/uploads/2011/02/3-1024x107.gif" alt="" width="614" height="64" /></a></p>
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<p style="text-align: left">Switch to the appliance you would like to be the Secondary.</p>
<p style="text-align: left">Double click on the IP information to open up the High Availability properties dialog to configure the node</p>
<p style="text-align: left">Select the check box “<strong>STAY SECONDARY</strong>” and click OK</p>
<p style="text-align: left"> <a href="http://blogs.eGroup-us.com/wp-content/uploads/2011/02/4.gif"><img class="alignnone size-full wp-image-3409" src="http://blogs.eGroup-us.com/wp-content/uploads/2011/02/4.gif" alt="" width="230" height="399" /></a></p>
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The node state will then change to <strong>STAY SECONDARY</strong>
<p style="text-align: left">Go back to the Primary Appliance. Click Add and enter the IP information for your Secondary Appliance.</p>
<p style="text-align: left"> <a href="http://blogs.eGroup-us.com/wp-content/uploads/2011/02/5.gif"><img class="alignnone size-full wp-image-3410" src="http://blogs.eGroup-us.com/wp-content/uploads/2011/02/5.gif" alt="" width="245" height="211" /></a></p>
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<p style="text-align: left">* <strong>Make sure that “<em>Turn off HA Monitor on interfaces/channels that are down</em>” is selected. This is important so that the appliances don’t begin the failover process since they can’t currently talk to each other</strong></p>
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<p style="text-align: left">If you take a look at the secondary appliance you will see that synchronization is taking place.</p>
<p style="text-align: left"> <a href="http://blogs.eGroup-us.com/wp-content/uploads/2011/02/6.gif"><img class="alignnone size-large wp-image-3411" src="http://blogs.eGroup-us.com/wp-content/uploads/2011/02/6-1024x126.gif" alt="" width="368" height="46" /></a></p>
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<p style="text-align: left">Now that synchronization is taking place go back to the Primary appliance and select <strong>Enabled (Actively participate in HA)</strong> and hit OK</p>
<p style="text-align: left"> <a href="http://blogs.eGroup-us.com/wp-content/uploads/2011/02/7.gif"><img class="alignnone size-full wp-image-3412" src="http://blogs.eGroup-us.com/wp-content/uploads/2011/02/7.gif" alt="" width="230" height="401" /></a></p>
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<p style="text-align: left"> Repeat this step for the Secondary Appliance.</p>
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<p style="text-align: left">Both appliances are now up and running configured for HA and in an “UP” State</p>
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<p style="text-align: left">Make sure to check the network interfaces to verify monitoring is on. It should be enabled by default but double checking cannot hurt. You can find this by expanding the <strong>NETWORK</strong> folder and opening <strong>INTERFACES. </strong>Monitoring must be on for the appliances to automatically detect if one drops so it can initiate failover.</p>
<p style="text-align: left">One last thing at the bottom of the screen in High Availability you can Force Failover. I would highly recommend this so that you know that everything is working properly. By forcing failover the secondary will become active… To switch back to the primary simply force failover again.</p>
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<p style="text-align: left">Citrix has a great video on this that has more detail, it can be viewed here (<a href="http://support.citrix.com/article/CTX125685">http://support.citrix.com/article/CTX125685</a>).</p>
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