PH61590: PROVIDE OPTIONS TO HELP DEBUGGING "CHILD PROCESS... STILL DID NOT EXIT, SENDING A SIGKILL".

APAR status

• Closed as program error.

Error description

• During shutdown, child processes that do not gracefully exit are
  eventually forcibly killed with SIGKILL:
  
  child process 65794 still did not exit, sending a SIGTERM
  child process 65794 still did not exit, sending a SIGTERM
  child process 65794 still did not exit, sending a SIGKILL
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM HTTP Server on zOS         *
  ****************************************************************
  * PROBLEM DESCRIPTION: During shutdown, processes kept busy by *
  *                      long running requests are eventually    *
  *                      killed                                  *
  *                      with SIGKILL. Because the process is    *
  *                      killed, it is hard to tell afterwards   *
  *                      what was                                *
  *                      occurring.                              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  In cases where child processes are killed this way, we will
  generally want to see what kind of request is being processed or
  what kind of timeout might be applied.
  

Problem conclusion

• An environment variable was added to control extra actions to
  take when a process is slow to exit on zOS.
  
  IHS_CHILD_NOEXIT_ACTION can be set to "operconsole" or
  "ceedump".
  
  The value "operconsole" causes a message to be written to the
  operator console. The message will include the text 'CRIHS0007I'
  
  The value "ceedump" causes a SIGUSR2 to be sent to the
  process which will call the cdump() routine to write a CEEDUMP.
  Note: The CEEDUMP may be delayed and incomplete  on modern zOS
  releases if_CEE_CONDWAIT_PAUSE=NO is not also set in the
  environment.
  
  The fix for this APAR is targeted for inclusion in IBM HTTP
  Server fix packs 8.5.5.27 and 9.0.5.21. For more information,
  see 'Recommended Updates for WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WAS IHS ZOS

• Fixed component ID

  5655I3510

Applicable component levels