Problem
You’ve noticed that Citrix ADC / NetScaler hosted on Azure is no longer reachable and attempting to use the Serial console feature in Azure administration portal fails with the following error after entering the password for the nsroot account:
Nsnet_connect: No such file or directory
Solution
One of the possible reasons why the above error is displayed is if the /var directory is full but not being able to log into the appliance means that there is no way of cleaning up the drive. The workaround for this scenario is to try and use the nsrecover account to log in. The default password for this account is usually nsroot:
Once successfully logged in, proceed to use df -h to confirm the issue as shown in the screenshot above then use the following KB to clean up the /var directory:
How to free space on /var directory for logging issues with a Citrix ADC appliance
https://docs.citrix.com/en-us/citrix-adc/current-release/system/troubleshooting-citrix-adc/how-to-free-space-on-var-directory.html
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