my-rook-config/deploy/examples/filesystem.yaml

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# Create a filesystem with settings with replication enabled for a production environment.
# A minimum of 3 OSDs on different nodes are required in this example.
# If one mds daemon per node is too restrictive, see the podAntiAffinity below.
#  kubectl create -f filesystem.yaml
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apiVersion: ceph.rook.io/v1
kind: CephFilesystem
metadata:
  name: myfs
  namespace: rook-ceph # namespace:cluster
spec:
  # The metadata pool spec. Must use replication.
  metadataPool:
    replicated:
      size: 3
      requireSafeReplicaSize: true
    parameters:
      # Inline compression mode for the data pool
      # Further reference: https://docs.ceph.com/docs/master/rados/configuration/bluestore-config-ref/#inline-compression
      compression_mode:
        none
        # gives a hint (%) to Ceph in terms of expected consumption of the total cluster capacity of a given pool
      # for more info: https://docs.ceph.com/docs/master/rados/operations/placement-groups/#specifying-expected-pool-size
      #target_size_ratio: ".5"
  # The list of data pool specs. Can use replication or erasure coding.
  dataPools:
    - name: replicated
      failureDomain: host
      replicated:
        size: 3
        # Disallow setting pool with replica 1, this could lead to data loss without recovery.
        # Make sure you're *ABSOLUTELY CERTAIN* that is what you want
        requireSafeReplicaSize: true
      parameters:
        # Inline compression mode for the data pool
        # Further reference: https://docs.ceph.com/docs/master/rados/configuration/bluestore-config-ref/#inline-compression
        compression_mode:
          none
          # gives a hint (%) to Ceph in terms of expected consumption of the total cluster capacity of a given pool
        # for more info: https://docs.ceph.com/docs/master/rados/operations/placement-groups/#specifying-expected-pool-size
        #target_size_ratio: ".5"
  # Whether to preserve filesystem after CephFilesystem CRD deletion
  preserveFilesystemOnDelete: true
  # The metadata service (mds) configuration
  metadataServer:
    # The number of active MDS instances
    activeCount: 1
    # Whether each active MDS instance will have an active standby with a warm metadata cache for faster failover.
    # If false, standbys will be available, but will not have a warm cache.
    activeStandby: true
    # The affinity rules to apply to the mds deployment
    placement:
      #  nodeAffinity:
      #    requiredDuringSchedulingIgnoredDuringExecution:
      #      nodeSelectorTerms:
      #      - matchExpressions:
      #        - key: role
      #          operator: In
      #          values:
      #          - mds-node
      #  topologySpreadConstraints:
      #  tolerations:
      #  - key: mds-node
      #    operator: Exists
      #  podAffinity:
      podAntiAffinity:
        requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchExpressions:
                - key: app
                  operator: In
                  values:
                    - rook-ceph-mds
            ## Add this if you want to allow mds daemons for different filesystems to run on one
            ## node. The value in "values" must match .metadata.name.
            #    - key: rook_file_system
            #          operator: In
            #          values:
            #            - myfs
            # topologyKey: kubernetes.io/hostname will place MDS across different hosts
            topologyKey: kubernetes.io/hostname
        preferredDuringSchedulingIgnoredDuringExecution:
          - weight: 100
            podAffinityTerm:
              labelSelector:
                matchExpressions:
                  - key: app
                    operator: In
                    values:
                      - rook-ceph-mds
              # topologyKey: */zone can be used to spread MDS across different AZ
              topologyKey: topology.kubernetes.io/zone
    # A key/value list of annotations
    # annotations:
    #  key: value
    # A key/value list of labels
    # labels:
    #  key: value
    # resources:
    # The requests and limits set here, allow the filesystem MDS Pod(s) to use half of one CPU core and 1 gigabyte of memory
    #  limits:
    #    memory: "1024Mi"
    #  requests:
    #    cpu: "500m"
    #    memory: "1024Mi"
    priorityClassName: system-cluster-critical
    livenessProbe:
      disabled: false
    startupProbe:
      disabled: false
  # Filesystem mirroring settings
  # mirroring:
  #   enabled: true
  #   # list of Kubernetes Secrets containing the peer token
  #   # for more details see: https://docs.ceph.com/en/latest/dev/cephfs-mirroring/#bootstrap-peers
  #   # Add the secret name if it already exists else specify the empty list here.
  #   peers:
  #     secretNames:
  #     - secondary-cluster-peer
  #   # specify the schedule(s) on which snapshots should be taken
  #   # see the official syntax here https://docs.ceph.com/en/latest/cephfs/snap-schedule/#add-and-remove-schedules
  #   snapshotSchedules:
  #     - path: /
  #       interval: 24h # daily snapshots
  #   # The startTime should be mentioned in the format YYYY-MM-DDTHH:MM:SS
  #   # If startTime is not specified, then by default the start time is considered as midnight UTC.
  #   # see usage here https://docs.ceph.com/en/latest/cephfs/snap-schedule/#usage
  #   # startTime: 2022-07-15T11:55:00
  #   # manage retention policies
  #   # see syntax duration here https://docs.ceph.com/en/latest/cephfs/snap-schedule/#add-and-remove-retention-policies
  #   snapshotRetention:
  #     - path: /
  #       duration: "h 24"
---
# create default csi subvolume group
apiVersion: ceph.rook.io/v1
kind: CephFilesystemSubVolumeGroup
metadata:
  name: myfs-csi # lets keep the svg crd name same as `filesystem name + csi` for the default csi svg
  namespace: rook-ceph # namespace:cluster
spec:
  # The name of the subvolume group. If not set, the default is the name of the subvolumeGroup CR.
  name: csi
  # filesystemName is the metadata name of the CephFilesystem CR where the subvolume group will be created
  filesystemName: myfs
  # reference https://docs.ceph.com/en/latest/cephfs/fs-volumes/#pinning-subvolumes-and-subvolume-groups
  # only one out of (export, distributed, random) can be set at a time
  # by default pinning is set with value: distributed=1
  # for disabling default values set (distributed=0)
  pinning:
    distributed: 1 # distributed=<0, 1> (disabled=0)
    # export:                 # export=<0-256> (disabled=-1)
    # random:                 # random=[0.0, 1.0](disabled=0.0)