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Knowledge Base

VMware Cloud Foundation tasks fail with "java.lang.OutOfMemoryError" in the hms-agent-debug.log file (51730)

Last Updated: 2/17/2018Categories: InformationalTotal Views: 4986Language:
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Symptoms

When performing a task in SDDC Manager, the task fails. Examples of tasks that have failed:

Workload Domain Creation/Deletion/Expansion

Host Decommissioning

Lifecycle Updates

Hardware details are not present on the Dashboard page.

In the /home/vrack/vrm/logs/hms-agent-debug.log file, on the SDDC Manager VM, you see entries similar to:

2017-11-08 03:39:45.180 WARN  [qtp494894055-94] [org.eclipse.jetty.servlet.ServletHandler] Error for /api/1.0/hms/event/switches/R1S2/SWITCH_PORT
java.lang.OutOfMemoryError: Java heap space
2017-11-08 03:41:49.931 WARN  [qtp494894055-75] [org.eclipse.jetty.util.thread.QueuedThreadPool]
java.lang.OutOfMemoryError: Java heap space
2017-11-08 03:43:20.190 DEBUG [qtp494894055-22] [com.vmware.vrack.hms.ipmiservice.IpmiServiceExecutor] Is the node/host available or reachable for Node: R1N2
2017-11-08 03:39:58.404 WARN  [qtp494894055-84] [org.eclipse.jetty.util.thread.QueuedThreadPool]
java.lang.OutOfMemoryError: Java heap space
...
2017-11-08 07:32:29.096 ERROR [qtp494894055-32] [com.vmware.vrack.hms.rest.exception.ExceptionHandler] Returning Bad Request status due to unhandled exception.
java.lang.OutOfMemoryError: Java heap space
...
2017-11-08 08:52:06.533 ERROR [qtp494894055-104] [com.vmware.vrack.hms.rest.exception.ExceptionHandler] Returning Bad Request status due to unhandled exception.
java.lang.OutOfMemoryError: Java heap space
2017-11-08 08:50:16.301 DEBUG [qtp494894055-35] [com.vmware.vrack.hms.rest.services.HmsNodeRateLimiterFilter] Returning response code 200 for request: GET http://localhost:8448/api/1.0/hms/event/host/R1N0/SERVER
2017-11-08 08:51:15.443 WARN  [qtp494894055-78] [org.eclipse.jetty.servlet.ServletHandler] Error for /api/1.0/hms/event/host/R1N12/SERVER
java.lang.OutOfMemoryError: Java heap space
2017-11-08 08:52:02.213 WARN  [qtp494894055-24] [org.eclipse.jetty.servlet.ServletHandler] Error for /api/1.0/hms/event/host/R1N14/CPU
java.lang.OutOfMemoryError: Java heap space

or:
java.lang.OutOfMemoryError: GC overhead limit exceeded

Resolution

This is a known issue affecting VMware Cloud Foundation 2.2. Currently, there is no resolution.

Workaround

To work around this issue, on the SDDC Manager VM, restart HMS.

If the problem persists, increase the memory limit:

SSH to the SDDC Manager VM and change to the /opt/vrack/hms directory.

Check the current memory allocation for HMS.​

grep -i "xmx" hms.sh

You should see output similar to:

/bin/su $HMS_USER -c ""$JAVA" -Xmx2048m -XX:MaxPermSize=512m -classpath "$CLASSPATH" Dhms.config.file=$HMS_CONFIG $JETTY_LOGGING_OPT $HMS_LOGGING_CONFIG com.vmware.vrack.hms.HmsApp >> $HMSA_CONSOLE_LOG_FILE 2>&1 &"

In this example, the HMS memory allocation is set to the default, 2048 MB.

Increase the memory to 4096MB (or higher as needed).

sed -i -e 's/Xmx2048/Xmx4096/g' hms.sh​

Optionally, confirm the new memory configuration.

grep -i "xmx" hms.sh

/bin/su $HMS_USER -c ""$JAVA" -Xmx4096m -XX:MaxPermSize=512m -classpath "$CLASSPATH" -Dhms.config.file=$HMS_CONFIG $JETTY_LOGGING_OPT $HMS_LOGGING_CONFIG com.vmware.vrack.hms.HmsApp >> $HMSA_CONSOLE_LOG_FILE 2>&1 &"

Restart the HMS by running this command:

systemctl restart hms

Restart Workflow containing the affected task.

Detectable by VMware SkylineTM

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