Adding an OSD node to the Ceph cluster is an online process. To demonstrate this, we require a new virtual machine named ceph-node4 with three disks that will act as OSDs. This new node will then be added to our existing Ceph cluster.
Run the following commands from ceph-node1 until otherwise specified from any other node:
- Create a new node, ceph-node4, with three disks (OSD). You can follow the process of creating a new virtual machine with disks and the OS configuration, as mentioned in the Setting up a virtual infrastructure recipe in Chapter 1, Ceph – Introduction and Beyond, and make sure ceph-node1 can ssh into ceph-node4. Before adding the new node to the Ceph cluster, let's check the current OSD tree. As shown ...
