PI89813: XSLD fails if restricting restAdminServer

APAR status

• Closed as program error.

Error description

• For security reasons we need to bind the Liberty instances to a
  dedidated host  instead of "bind to any".
  So we changed in the Liberty instances the HTTP endoint settings
  for the
  restAdminServer from:
      <httpEndpoint host="*" httpPort="9082" httpsPort="9445"
  id="defaultHttpEndpoint"/>
  to:
      <httpEndpoint host="xsldserver02" httpPort="9082"
  httpsPort="9445"
  id="defaultHttpEndpoint"/>
  
  But now we run into two issues:
  1. The nanny cannot validate that the restAdminServer is still
  running
  and restarts it every 20 seconds.
  2. The XSLD console fails as it cannot reach the local
  restAdminServer
  (the internal request seems to be against localhost).
   If we change the host settings to "localhost" the WXS UI works
  but the
  restAdminServer cannot be used from remote.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  Users of eXtreme Scale Liberty Deployment   *
  *                  that attempt to restrict XSLD processes to  *
  *                  a single host interface.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: When XSLD servers are restricted to     *
  *                      one interface the monitoring process    *
  *                      fails to validate their statuses.       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  XSLD by default listens on all interfaces and programmatically
  determines the appropriate interface to self monitor on. When
  the interface is manually changed via the server.xml this
  causes inconsistencies with the self monitoring process.
  

Problem conclusion

• An environment variable, XSLD_MEMBER_HOST_ADDRESS, has been
  introduced that must be set during installation and runtime to
  restrict the XSLD host interface. An interim fix is available
  for this APAR upon request for eXtreme Scale version 8.6.1.2.
  

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

  WS EXTREME SCAL

• Fixed component ID

  5724X6702

Applicable component levels