PH34566: LIMIT NUMBER OF RETRIES FOR 503 RESPONSES

APAR status

• Closed as program error.

Error description

• Requests resulting in 503 response can go through all servers
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: WebSphere Plugin will try all server    *
  *                      for a 503 response                      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  They WebSphere Plugin is set to retry each server of a cluster
  if it gets a 503 response.  This can cause the plugin to mark
  each one down.
  

Problem conclusion

• The Plugin has been modified to allow for a new property
  called request503Retry that can be set at the Cluster level.
  Setting the property to "-1" will retry the request against all
  members.  A "0" will only do the initial request.  Any other
  positive number should be no more than the number of cluster
  members to limit how many retries the plugin should attempt.
  
  To set this property for plugin generation, you will go to the
  admin console Server Types>Clusters>WebSphere application
  server clusters>[your cluster]>Cluster members>[First member]>
  Custom properties.
  Click new and add "PLG.Cluster.request503Retry" and a value
  you want it to use.
  
  The fix for this APAR is targeted for inclusion in fix pack
  8.5.5.20 & 9.0.5.8. 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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels

• R850 PSY

     UP

• R900 PSY

     UP