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ActiveIQ Unified Manager WebUI is unresponsive or does not show performance data

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Applies to

  • ActiveIQ Unified Manager (UM) 9.x
  • RHEL or OVA

Issue

  • UM is regularly unresponsive

  • AIQ Unified manager is down, not responding

  • Performance statistics are empty
  • The services are up and running
  • There is an error in server.log:

2020-03-02 13:17:30,691 ERROR [org.jboss.as.server.deployment.scanner] (DeploymentScanner-threads - 1) WFLYDS0012: Scan of /opt/netapp/essentials/jboss/standalone/deployments threw Exception: java.lang.RuntimeException: WFLYDS0032: Failed to list files in directory /opt/netapp/essentials/jboss/standalone/deployments. Check that the contents of the directory are readable.
...

Caused by: java.nio.file.FileSystemException: /opt/netapp/essentials/jboss/standalone/deployments: Too many open files
 

...

 

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