Today I found that a vCenter Server Appliance that had been running strong for a while would no longer load the web client and I couldn’t log in via the vSphere C# client either. I logged into the core at https://vcentername:5480 and found that the system partition was 100%. This is what I did to fix it.

  1. Connected to the appliance with WINSCP
  2. Moved to the directory /var/log
  3. Found a file named LdapMessage-dateoftoday that was very large
  4. Deleted that file
  5. Rebooted the vCenter Server Appliance
  6. Once back up everything was working as expected.