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  • mon_osd_min_down_reporters: (must be set to 1)
  • osd_crush_chooseleaf_type: (must be set to 1)
  • osd_pool_default_min_size: Minimal number of available OSD to ensure cluster success (best: ceil(osd_pool_default_size / 2.0))
  • osd_pool_default_pg_num: (must be set to 128)
  • osd_pool_default_pgp_num: (must be set to 128)
  • osd_pool_default_size: Number of OSD in the cluster

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Image Added

Override mon configuration

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Ceph provides ansible rules to configure the software, you can read the documentation documentation here.

Warnings


Note

If this step is failed, you must restart it at the previous step. Use snapshot LVM to do this.

At end of this step, make sure that:

  • there is a rbd pool with this command: ceph osd pool ls.
  • there is a ceph pool with this command: virsh pool-list.

RADOS Block Devices

During this step, ceph will build a RADOS block device (RBD) from ceph_osd_disk. A storage entry (a pool) will be automatically generated for libvirt. When the service will be started, the hypervisor should be used to launch VMs.

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