Post-bootstrap setup

After the IBM Storage Ceph cluster has been installed and bootstrapped, start verifying and setting up your cluster.

Using the cephadm shell
The cephadm shell command opens a bash shell in a container with all Ceph packages installed. Use the shell to run “Day One” cluster setup tasks, such as installation and bootstrapping, and to run ceph commands.
cephadm commands
The cephadm is a command line tool to manage the local host for the cephadm Orchestrator. It provides commands to investigate and modify the state of the current host.
Verifying the cluster installation
After the cluster installation is complete, you can verify that the IBM Storage Ceph installation is running properly.
Adding hosts
Bootstrapping the IBM Storage Ceph installation creates a working storage cluster, consisting of one Monitor daemon and one Manager daemon within the same container. As a storage administrator, you can add additional hosts to the storage cluster and configure them.
Removing hosts
Remove Ceph cluster hosts with the Ceph Orchestrators.
Labeling hosts
The Ceph Orchestrator supports assigning both general labels and topological labels to hosts. Labels can be free-form with any text string. Topological labels are input with a hardware identifier and a user label. Each host can have multiple labels.
Adding Monitor service
A typical IBM Storage Ceph storage cluster has three or five monitor daemons deployed on different hosts. If your storage cluster has five or more hosts, deploy five monitor nodes.
Setting up a custom SSH key on an existing cluster
As a storage administrator, with cephadm, you can use an SSH key to securely authenticate with remote hosts. The SSH key is stored in the monitor to connect to remote hosts.
Setting up the admin node
Use an admin node to administer the storage cluster.
Adding Manager service
cephadm automatically installs a Manager daemon on the bootstrap node during the bootstrapping process. Use the Ceph orchestrator to deploy additional Manager daemons.
Adding OSDs
Use this information to deploy OSDs on a specific device or host.
Purging the Ceph storage cluster
Purging the Ceph storage cluster clears any data or connections that remain from previous deployments on your server.
Deploying client nodes
As a storage administrator, you can deploy client nodes by running the cephadm-preflight.yml and cephadm-clients.yml playbooks.

Parent topic: Installing