76 lines
2.1 KiB
Markdown
76 lines
2.1 KiB
Markdown
---
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title: kubectl Plugin
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---
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The Rook kubectl plugin is a tool to help troubleshoot your Rook cluster. Here are a few of the operations that the plugin will assist with:
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- Health of the Rook pods
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- Health of the Ceph cluster
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- Create "debug" pods for mons and OSDs that are in need of special Ceph maintenance operations
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- Restart the operator
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- Purge an OSD
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- Run any `ceph` command
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See the [kubectl-rook-ceph documentation](https://github.com/rook/kubectl-rook-ceph) for more details.
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## Installation
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- Install [krew](https://krew.sigs.k8s.io/docs/user-guide/setup/install/)
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- Install Rook plugin
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```console
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kubectl krew install rook-ceph
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```
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## Ceph Commands
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- Run any `ceph` command with `kubectl rook-ceph ceph <args>`. For example, get the Ceph status:
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```console
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kubectl rook-ceph ceph status
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```
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Output:
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```console
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cluster:
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id: a1ac6554-4cc8-4c3b-a8a3-f17f5ec6f529
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health: HEALTH_OK
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services:
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mon: 3 daemons, quorum a,b,c (age 11m)
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mgr: a(active, since 10m)
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mds: 1/1 daemons up, 1 hot standby
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osd: 3 osds: 3 up (since 10m), 3 in (since 8d)
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data:
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volumes: 1/1 healthy
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pools: 6 pools, 137 pgs
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objects: 34 objects, 4.1 KiB
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usage: 58 MiB used, 59 GiB / 59 GiB avail
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pgs: 137 active+clean
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io:
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client: 1.2 KiB/s rd, 2 op/s rd, 0 op/s wr
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```
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Reference: [Ceph Status](https://github.com/rook/kubectl-rook-ceph/blob/master/README.md#run-a-ceph-command)
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## Debug Mode
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Debug mode can be useful when a MON or OSD needs advanced maintenance operations that require the daemon to be stopped. Ceph tools such as `ceph-objectstore-tool`, `ceph-bluestore-tool`, or `ceph-monstore-tool` are commonly used in these scenarios. Debug mode will set up the MON or OSD so that these commands can be run.
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- Start the debug pod for mon b
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```console
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kubectl rook-ceph debug start rook-ceph-mon-b
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```
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- Stop the debug pod for mon b
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```console
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kubectl rook-ceph debug stop rook-ceph-mon-b
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```
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Reference: [Debug Mode](https://github.com/rook/kubectl-rook-ceph/blob/master/README.md#debug-mode)
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