Configuring File Storage

Defining Ceph Service Requirements

1. Open the site.yml file.

   1	vim site.yml

2. Add the mdss option, as shown in the following figure.

   

Defining the Cluster Host Service

Open the hosts file in the ceph-ansible directory.

1

vi hosts

Modify the applications on each node in the cluster as required.

Defining the Ceph Cluster Configuration

1. Open the all.yml file.

   1	vim all.yml

2. Search for the "CephFS" keyword and modify the configuration as follows:
   • Online Ceph download mode

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     ceph_origin: repository ceph_repository: community ceph_mirror: http://download.ceph.com ceph_stable_release: nautilus ceph_stable_repo: "{{ ceph_mirror }}/rpm-{{ ceph_stable_release }}" ceph_stable_redhat_distro: el7 monitor_interface: enp133s0 journal_size: 5120 public_network: 172.19.106.0/0 cluster_network: 172.19.106.0/0 osd_objectstore: bluestore # CEPHFS # ########## cephfs: cephfs # name of the ceph filesystem cephfs_data_pool: name: "{{ cephfs_data if cephfs_data is defined else 'cephfs_data' }}" pg_num: "{{ osd_pool_default_pg_num }}" pgp_num: "{{ osd_pool_default_pg_num }}" rule_name: "replicated_rule" type: 1 # erasure_profile: "" # expected_num_objects: "" application: "cephfs" size: "{{ osd_pool_default_size }}" min_size: "{{ osd_pool_default_min_size }}" cephfs_metadata_pool: name: "{{ cephfs_metadata if cephfs_metadata is defined else 'cephfs_metadata' }}" pg_num: "{{ osd_pool_default_pg_num }}" pgp_num: "{{ osd_pool_default_pg_num }}" rule_name: "replicated_rule" type: 1 # erasure_profile: "" # expected_num_objects: "" application: "cephfs" size: "{{ osd_pool_default_size }}" min_size: "{{ osd_pool_default_min_size }}" cephfs_pools: - "{{ cephfs_data_pool }}" - "{{ cephfs_metadata_pool }}"

     

     monitor_interface indicates the network interface device ID of the public network.

   • Offline Ceph download mode

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     ceph_origin: distro ceph_repository: local ceph_stable_release: nautilus

Defining OSDs

Define the required OSDs by referring to Defining OSDs.