# Sentinel Metrics

[](/en/reference/operations/metrics/sentinel.html.md "View as Markdown") 

| Name | Unit | Description |
| --- | --- | --- |
| 

sentinel.restarts

 | restart | Number of service restarts done by the sentinel |
| 

sentinel.totalRestarts

 | restart | Total number of service restarts done by the sentinel since the sentinel was started |
| 

sentinel.uptime

 | second | Time the sentinel has been running |
| 

sentinel.running

 | instance | Number of services the sentinel has running currently |

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