Recovering from Ceph failure

Ceph is a very resilient, highly available storage system. Once a Ceph cluster is configured, for the most part, it can run maintenance free. In most cases, lack of knowledge on how Ceph works leads to major issues, causing cluster-side interference. In this section, we will highlight some of the most common issues and how to combat them in a Ceph cluster. 

Best practices for a healthy Ceph cluster

The following are a few best practices to keep a Ceph cluster running healthy:

• If possible, keep all settings to default for a healthy cluster.
• Use Ceph pool only to implement a different OSD type policy and not for multitenancy, such as one pool for SSDs and another for HDDs.
• Do not make frequent...