PI74926: AGENTS HAVE INCORRECT STATUES OR EXPERIENCE CONNECTIVITY PROBLEMS

IBM UrbanCode Deploy fixpack 1 (6.2.3.1) for 6.2.3

APAR status

• Closed as program error.

Error description

• Agents can have incorrect statues or experience connectivity
  problems in UCD system with servers running in HA mode. Some
  examples or symptoms of these problems are:
  
  Agents can be in "Connecting" state when they should be online.
  The connection test always passes or passes intermittently.
  
  Agents can be in "Online" state but the connection test always
  fails or the agent is otherwise known to be not running or not
  connected. All steps run on the agent fail with the
  ackTimeout=true output property set.
  
  Agents can be in "Online" state but the connection test only
  passes intermittently and the agent is known to be running and
  connected. Steps run on the agent may sometimes fail with the
  ackTimeout=true output property set.
  
  A database deadlock is reported in the server log inside the
  class AgentTopologyTrackerForServer and is associated with an
  exception stack trace.
  
  An agent relay consumes 100% CPU and no agent connected to the
  relay responds to a connection test or can run a step.
  

Local fix

• Two workarounds are known:
  1. Only run a single UCD server.
  2. Remove all agent relays.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * ALL                                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Agents can have incorrect statues or experience connectivity *
  * problems in UCD system with servers running in HA mode. Some *
  * examples or symptoms of these problems are:                  *
  *                                                              *
  * Agents can be in "Connecting" state when they should be      *
  * online.                                                      *
  * The connection test always passes or passes intermittently.  *
  *                                                              *
  * Agents can be in "Online" state but the connection test      *
  * always                                                       *
  * fails or the agent is otherwise known to be not running or   *
  * not                                                          *
  * connected. All steps run on the agent fail with the          *
  * ackTimeout=true output property set.                         *
  *                                                              *
  * Agents can be in "Online" state but the connection test only *
  * passes intermittently and the agent is known to be running   *
  * and                                                          *
  * connected. Steps run on the agent may sometimes fail with    *
  * the                                                          *
  * ackTimeout=true output property set.                         *
  *                                                              *
  * A database deadlock is reported in the server log inside the *
  * class AgentTopologyTrackerForServer and is associated with   *
  * an                                                           *
  * exception stack trace.                                       *
  *                                                              *
  * An agent relay consumes 100% CPU and no agent connected to   *
  * the                                                          *
  * relay responds to a connection test or can run a step.       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to UCD version 6.2.3.1                               *
  ****************************************************************
  

Problem conclusion

• Fixed in UCD version 6.2.3.1
  

Temporary fix

• Two workarounds are known:
  1. Only run a single UCD server.
  2. Remove all agent relays.
  

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

  UC DEPLOY

• Fixed component ID

  5725M5400

Applicable component levels

• R623 PSY

     UP