Lifecycle

Rook-Ceph operator manages the lifecycle of pods in the Ceph cluster.

The pods that are managed in the Ceph cluster are as follows:

Rook operator

A single pod that owns the reconcile of the cluster.

RBD CSI Driver

• Two provisioner pods, managed by a single deployment.

• One plugin pod per node, managed by a daemonset.

CephFS CSI Driver

• Two provisioner pods, managed by a single deployment.

• One plugin pod per node, managed by a daemonset.

Monitors (mons)

Three mon pods, each with its own deployment.

Stretch clusters

Contain five mon pods, one in the arbiter zone and two in each of the other two data zones.

Manager (mgr)

There is a single mgr pod for the cluster.

Stretch clusters

There are two mgr pods (starting with Fusion Data Foundation 4.8), one in each of the two non-arbiter zones.

Object storage daemons (OSDs)

At least three OSDs are created initially in the cluster. More OSDs are added when the cluster is expanded.

Metadata server (MDS)

The CephFS metadata server has a single pod.

RADOS gateway (RGW)

The Ceph RGW daemon has a single pod.