IT17481: ERROR "REMOTE APPLIANCE(S) UNAVAILABLE" ENCOUNTERED IN HA-DR NETWORK BY APPLIANCE THAT GETS SUSPENDED FROM HA GROUP.

APAR status

• Closed as program error.

Error description

• Disaster Recovery (DR) primary and secondary queue managers are
  not getting asynchronously replicated on an appliance which is
  part of an HA group after that appliance gets suspended from
  the HA group.  Once that appliance resumes the HA state, the
  asynchronous replication works.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  This issue affects users of the MQ Appliance who have configured
  queue managers to be part of a DR and HA group and who have
  suspended the appliance from the HA group.
  
  This issue is more likely to be encountered if all of the
  appliance's HA and DR interfaces are defined on the same subnet,
  or if the appliance hosts multiple DR/HA queue managers.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  A logic error within the crtdrsecondary command could
  incorrectly cause the wrong IP address to be recorded in the DR
  configuration. In this scenario, the IP address recorded was a
  temporary address owned by the current DR/HA primary, rather
  than the permanent address of the adapter.
  
  This then caused failures to establish the DR link when the
  appliance was suspended from the HA group, as the temporary
  address ceased to be valid.
  

Problem conclusion

• The crtdrsecondary command has been updated to correct this
  issue.
  
  If the issue has been encountered, then it is necessary to
  re-run the crtdrprimary and crtdrsecondary commands after
  applying this fix, in order to correct the saved DR
  configuration on the appliances.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.6
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

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

  IBM MQ APPL M20

• Fixed component ID

  5725S1400

Applicable component levels

• R800 PSY

     UP