[solution] No response from subprocess (whostmgr (whostmgr)):

Error: Server 500 // No response from subprocess (whostmgr (whostmgr)): The subprocess died from signal 1.

Reasoning : These warnings seem to appear as a result of

  • Out of memory
  • Memory Allocation
  • my.cnf file misconfiguration
  • Large over head of SQL

While restarting SQL and Apache services does work short term, you will normally still see the problem arise shortly after,   Restarting Cpanel using the following SSH command often helps resolve any issues like this .

#service cpanel restart

Another issue could be the RPM database is corrupt or has duplicate entries,    you can rebuild your RPM database via WHM buy going to “Software – Rebuild RPM database” which can take anything from 3min – 30mins depending on your setup.

Something else to try is entering the following command via SSH which will check and remove duplicate RPM’s :

# /scripts/autorepair fix_duplicate_cpanel_rpms

Repairing and optimising all databases at once

High load average or memory allocation problems are some times the result of large crashed tables ( like session tables ) which could not be recovered via the browser phpMyadmin or WHM directly. Logging into SSH and performing one of the following should do checks , repairs and optimisation of every SQL database on the server ( note this can take some time if you have alot of sites or databases on one server, in this case you should do each database individually )

mysqlcheck --all-databases -r #repair
mysqlcheck --all-databases -a #analyze
mysqlcheck --all-databases -o #optimize

Hopefully this helps some of you, If your still struggling and require someone to look into your problems with an apache/WHM/cpanel server then feel free to get in touch for a quote.