Alert rule: CephNodeDiskspaceWarning
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Overview
This alert is triggered when the disk space used by a storage node will be full in less than 5 days assuming the average fill-up rate of the past 48 hours.
You should increase the space available to the node.
The default location for the store sits under /var/lib/rook/ as a hostPath volume.
Steps for debugging
Check node low on disk space
$ ceph_cluster_ns=syn-rook-ceph-cluster
$ ceph_mon_name=a (1)
$ kubectl -n ${ceph_cluster_ns} get deploy -lapp=rook-ceph-mon,mon=${ceph_mon_name} -ojson | jq '.items[].spec.template.spec.nodeSelector'
{
"kubernetes.io/hostname": "storage-XXXX" (2)
}| 1 | The name of the monitor that’s alerting. |
| 2 | The node that the monitor is running on. |