PH41044: AN AGENT USING AN AGENT-RELAY THAT FAILS-OVER TO A COLD STANDBY SERVER URI, WILL NOT SWITCH BACK TO ANOTHER SERVER.

APAR status

• Closed as program error.

Error description

• If an Agent has been configured with a Relay and multiple
  server WSS URIs, an IOException while communicating with
  one of the URIs may cause it to switch to an alternate URI.
  
  If the relay can not connect to the alternate URI, e.g. a
  cold-standby,
  the agent will not automatically switch to a valid WSS URI until
  restarted.
  
  Stack Trace:
  YYYY-MM-DD HH:MM.SS,MILLI EDT INFO  netty-pool-0
  com.urbancode.air.devilfish.agentcomm.ServerConnectionInfo - Set
  preferred path: {. -> <Preffered Host>:20080 -> wss://<Preffered
  Host>:7920}
  YYYY-MM-DD HH:MM.SS,MILLI EDT ERROR netty-pool-0
  com.urbancode.air.devilfish.agentcomm.GenericExceptionHandler -
  Closing channel on exception: ch=e7c6462b local=<IP
  Address>:51433 remote=<IP Address>:20080 peer=<unknown>
  cause=ProxyConnectException message={http, none, <Host Name>/<IP
  Address>:20080 => <Host Name>/<IP Address>:7921, status: 502 Bad
  Gateway}
  YYYY-MM-DD HH:MM.SS,MILLI EDT INFO  netty-pool-1
  com.urbancode.air.devilfish.agentcomm.ServerConnectionInfo -
  Unset preferred path: {. -> <Preffered Host>:20080 ->
  wss://<Preffered Host>:7920}
  YYYY-MM-DD HH:MM.SS,MILLI EDT DEBUG netty-pool-1
  com.urbancode.air.devilfish.agentcomm.ServerConnectionInfo -
  Path demotion reason: no cause provided
  java.lang.Exception: no cause provided
      at
  com.urbancode.air.devilfish.agentcomm.ServerConnectionInfo.pathI
  sBad(ServerConnectionInfo.java:144)
      at
  com.urbancode.air.agent.comm.AgentWSClient.pathIsBad(AgentWSClie
  nt.java:162)
      at
  com.urbancode.air.agent.comm.AgentWSClient.channelClosed(AgentWS
  Client.java:297)
      at
  com.urbancode.air.agent.comm.AgentWSClient.lambda$1(AgentWSClien
  t.java:203)
      at
  io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultP
  romise.java:578)
      at
  io.netty.util.concurrent.DefaultPromise.notifyListenersNow(Defau
  ltPromise.java:552)
      at
  io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultP
  romise.java:491)
      at
  io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise
  .java:616)
      at
  io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromi
  se.java:605)
      at
  io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromis
  e.java:104)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Agents connecting through relays                             *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * If an Agent has been configured with a Relay and multiple    *
  * server WSS URIs, an IOException while communicating with     *
  * one of the URIs may cause it to switch to an alternate URI.  *
  *                                                              *
  * If the relay can not connect to the alternate URI, e.g. a    *
  * cold-standby,                                                *
  * the agent will not automatically switch to a valid WSS URI   *
  * until                                                        *
  * restarted.                                                   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• Fixed in 7.2.1.1
  

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

  UC DEPLOY

• Fixed component ID

  5725M5400

Applicable component levels