Introduction

The previous recipes in this book have taught you how to deploy and manage a Ceph cluster as well as configure different clients to access the Ceph object store, but what do you do if an error appears on your cluster? The hardware backing a Ceph cluster is subject to failure as time passes, and troubleshooting Ceph does not have to be a frightening ordeal if you understand what the errors mean and what to look for in order to narrow down where the actual issue is. In this chapter, we will take look at some recipes that will enable you to become comfortable with troubleshooting various issues on your Ceph cluster and show you that with a proper understanding of some common error messages, Ceph troubleshooting is actually not that difficult!