Ceph Cookbook

Using Ceph cluster with a hands-on approach

Now that we have a running Ceph cluster, we will perform some hands-on practice to gain experience with Ceph, using some basic commands.

How to do it…

1. Check the status of your Ceph installation:

   # ceph -s  or # ceph status
   

2. Watch the cluster health:

   # ceph -w
   

3. Check the Ceph monitor quorum status:

   # ceph quorum_status --format json-pretty
   

4. Dump the Ceph monitor information:

   # ceph mon dump
   

5. Check the cluster usage status:

   # ceph df
   

6. Check the Ceph monitor, OSD, and placement group stats:

   # ceph mon stat
   # ceph osd stat
   # ceph pg stat
   

7. List the placement group:

   # ceph pg dump
   

8. List the Ceph pools:

   # ceph osd lspools
   

9. Check the CRUSH map view of OSDs:

   # ceph osd tree
   

10. List the cluster authentication keys:

    # ceph auth ...