Wido den Hollander created CLOUDSTACK-9397:
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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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