Setting up Monitoring and Notifications
Once you set the limit for a resource, you can also configure Plesk to
monitor the consumption of that resource.
To turn monitoring on, set the following values:
- Threshold (“Notify when exceeded.” in Plesk Panel).
- Period.
To turn monitoring off, remove the corresponding threshold value.
Allowed Setting Values for Monitoring
The monitoring settings may have the following values:
| Setting | Measured in | Available values |
|---|---|---|
| CPU limit | Percentage of CPU time, where 100% is one CPU core fully used | Not more than the CPU limit value |
| RAM limit | Bytes | Not less than 1MB and not more than the RAM limit value |
| Disk input (write) speed | Bytes per seconds | Not less than 1MB per second and not more than the disk write limit value |
| Disk output (read) speed | Bytes per seconds | Not less than 1MB per second and not more than the disk read limit value |
| Check Period (for any resource) | Seconds | 300 (5 minutes), 3600 (1 hour), or 86400 (24 hours) |
How the System Performs Monitoring
When you enable resource monitoring for one or more resources, the
Cgroups Manager starts monitoring their consumption. If you enabled
resource monitoring on the subscription level, resource usage for that
subscription will be monitored. If you enabled resource monitoring on
the service plan level, resource usage for all subscriptions based on
that service plan will be monitored instead:
- Every five minutes the Cgroups Manager counts the average resource
consumption of a subscription and checks whether it is equal or
greater than thethreshold. - After every
periodthe Cgroups Manager checks how many times the
subscription has exceeded thethresholdwithin the last
periodof time.- If the subscription has exceeded the
thresholdin all
intervals of aperiod, Cgroups Manager sends an email
notification. - If this happens for longer than one …
- If the subscription has exceeded the