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From "Wido den Hollander (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-9397) Add Watchdog timer to KVM Instances
Date Tue, 31 May 2016 09:27:12 GMT
Wido den Hollander created CLOUDSTACK-9397:
----------------------------------------------

             Summary: Add Watchdog timer to KVM Instances
                 Key: CLOUDSTACK-9397
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9397
             Project: CloudStack
          Issue Type: New Feature
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: KVM
            Reporter: Wido den Hollander
            Assignee: Wido den Hollander


A Watchdog timer can be used by the hypervisor to verify if an Instance is still alive. If
not, for example due to a kernel panic the HV can reset the Instance so that it boots again.

Inside the Instance the 'watchdog' daemon has to run to provide this. If the Watchdog is not
running the HV can't verify if the Instance has crashed.

This is supported by Libvirt and Qemu and can be configured in the XML: https://libvirt.org/formatdomain.html#elementsWatchdog



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