Ceph Cluster Deploy

Minimal deployment for experiment and training

We will deploy a Ceph cluster. The cluster will consists of three nodes: one for Ceph monitor and manager and two for OSD daemons.

Ceph is an open-source and distributed storage system. With proper configuration, it can provide

• HA (Highly Available) storage
• Scalable storage on commodity hardware beyond a single storage server can provide
• Various interface: block, file and object storage
• Multi-tenancy
• Tightly-managed, extendable large Persistent Volumes (PVs) with Rook-Ceph

The following diagram shows the nodes for the Ceph deployment.

Preparation of the deployment:

We set up the following four things on each node

• A Linux user account cluster-admin with sudo permissions
• /etc/hosts entries
• docker.io installation
• Password-less ssh on cluster-admin (not strictly necessary) from ceph-mon node