Christos Polydorou

I opened up my Citrix Command Center today and I had hundreds of messages regarding IP conflict -on a NetScaler. In order to resolve this I had to get the MAC address of the machine that creates the conflict, and what better way from the command line. I fired up Putty and connected to the NetScaler instance facing the conflict. I switched to the linux shell using the shell command and then I run nsconmsg -K /var/nslog/newnslog -d consmsg to get the relevant messages. Be vary careful with the above command and always use capital K. An other way to get this kind of messages it using the Diagnostics page within the GUI. Another thing to note is that you should check the HA status if you have two instances and you get the conflict about a VIP. If the IP with the conflict is the NSIP then you should check the network cables or the virtual adapters and the networks you have the connected to.

Upgraded a NetScaler HA pair yesterday, following the official procedure, and everything seemed to be working fine. All services were up, all monitors were fine too. When I tried to take a look on a Virtual Server properties though, I got an error stating that the GUI version that I currently have (124.x) is not compatible with the kernel I'm using (125.8). The message also suggested that I flushed the Java cache, which I have disabled. I gave it a try with other browsers but the result was the same. After googling around for a bit I found out that the problem is caused by a custom theme I have setup on one of my Access Gateway Virtual Servers. I switched the theme setting to Green Bubble and everything works fine now. The bad thing is that I may have to build the custom theme from scratch...