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Was upgrading the NetScalers from 10.1 to 10.5 and came across a bug that will be useful to know about.
Most people will customize the NetScaler Gateway interface to suit there customers needs. Back in the good old days this could be done using the rc.netscaler file on boot but not you have to create a tar file and ns_gui_custom folders. Quite a bit more work but will persist during reboots.
The issue with this is that if you upgrade from 10.1 to 10.5 with the User Interface set to Custom you will receive and error when trying to log back into the NetScaler management console post upgrade.
“Login command failed over API. Reason: Response not of type test/xml: test/html”
The way to fix this is below:
- Set the UI to Default.
- Undertake the Upgrade
- Re-apply the UI customization
NOTE: If you have command propagation disabled you will need to turn off the theme on both NetScalers.
Hope this helps some of you out.