
Deactivate compute node action is unsuccessful
Possible cause and recommendationSymptom
The managed compute node is not been activated
1. Ensure that the compute node is activated. An active compute node
displays a green icon.
One or more virtual machines are running on the compute node
You see an error on the Activity screen
when you try to deactivate a compute
node
1. Make sure there are no virtual machine instances running on the compute
node. If an instance is running on the compute node, you must delete the
instance before you can deactivate the compute node.
To delete an instance, select Instances from the main menu, then select
Actions→Delete.
2. Retry the deactivate action. See Deactivate a compute node (page 106).
Deactivation log files might have exhausted the compute node
disk volume space
The compute node fails when you try to
deactivate it
1. Bring the compute node back up.
2. Make sure that the log files are written to a physical volume other than
the boot disk. You should have assigned a log location prior to activating
the host.
3. Check the size of the log files in the /var/log/nova directory. Delete
the files if they are consuming too much space on the disk.
4. When sufficient log file space is available, try again to deactivate the
compute node. See Deactivate a compute node (page 106).
Delete compute node action is unsuccessful
Possible cause and recommendationSymptom
The compute node has not been deactivated
You see an error on the Activity screen
when you try to delete a compute node
1. Ensure that the compute node is deactivated. A deactivated compute node
displays a red icon. See Deactivate a compute node (page 106).
2. Retry the delete action. See Delete a compute node (page 107).
Red Hat netcf bug fix update corrects libvirt issues
Possible cause and recommendationSymptom
Red Hat netcf bug fix update is required
On KVM compute nodes running RHEL 6.4 or 6.5, running simultaneous VM
operations for long periods of time may cause libvirt to crash with a
segmentation fault.
• Update the KVM compute node with the netcf bug fix update from Red
Hat. For detailed information, see http://rhn.redhat.com/errata/
RHBA-2014-0263.html.
libvirt crashes with a segmentation fault
176 Troubleshoot resource configuration
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