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2. If restart fails, writes a event log in in syslog.

3. A restart failed process is unmonitored for the next 30 minutes. After 30 minutes monitor tries to 

restart the service. 

The monitor script is added to crontab to run for every 3 minutes.

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Since this feature has new script files, router reboot is required for existing router.

References:

https://cwiki.apache.org/confluence/display/CLOUDSTACK/System+VMs+and+services+resiliency^{Image Removed}