Datadog custom agent check for number of drives/partitions

readme.md

Info

I needed a simple check that would tell me if a drive suddenly failed/disappeared from the server.
This is accomplished by counting the number of mounted partitions. You can tehn setup a monitor trigger if the count decreases.

Install

• put disk_partition.py in your datadog's checks.d directory
• put disk_partition.yaml in your datadog's conf.d directory

Restart the datadog agent.

References

https://stackoverflow.com/a/25777174/2785592 https://docs.datadoghq.com/guides/agent_checks/

disk_partition.py

from checks import AgentCheck
import psutil
class DiskPartitionCheck(AgentCheck):
    def check(self, instance):
        self.gauge('disk_partition.count', len(psutil.disk_partitions()))

disk_partition.yaml

init_config:

instances:
    [{}]