UIM is unresponsive after disk full on primary hub - controller.cfg not affected but hub is still not running

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)

Issue/Introduction

After running out of space on the installation drive, UIM is unresponsive - the hub does not appear to be running.

I checked the controller.cfg but it does not appear to be missing any sections.

In Windows Event Viewer I can see hub.exe repeatedly crashing.

Environment

• Release: 20.4

Resolution

Try navigating to (Nimsoft Installation)\Nimsoft\hub\ in a Command Prompt and execute hub.exe

You may see an error like:

random number generator:RAND_load_file:Cannot open file:crypto\rand\randfile.c

If this is the case it indicates that one of the tunnel client certificates has become corrupted.

Go into the hub.cfg and find the <tunnel> <clients> section.  You will see one or more client configuration sections like the following:

<1>
         active = yes
         host = #.#.#.#
         port = 48003
         heartbeat = 1800
         cert = certs/client1.pem
         password = (encrypted string)
         check_cn = no
         check_ip_first = 1
         description =
         hub = <hubname>
         robot = <hubrobot name>
      </1>

In each such section, change "active = yes" to "active = no" and then restart the hub/robot.

If this stabilizes the hub, enable the client connections one at a time and wait 2-3 minutes to see if the hub begins crashing again. 

Once you have identified which client connection is at fault you will need to rebuild the tunnel client connection.

Additional Information

The following KB can be helpful in rebuilding the client connection:

KB127959