...
mon_osd_min_down_reporters
: (must be set to1
)osd_crush_chooseleaf_type
: (must be set to1
)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 to128
)osd_pool_default_pgp_num
: (must be set to128
)osd_pool_default_size
: Number of OSD in the cluster
...
Override mon configuration
...
Ceph provides ansible rules to configure the software, you can read the documentation documentation here.
Warnings
Note |
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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:
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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.
...
This disk will be used with the librbd library provided by ceph.
draw.io Diagram
More details here.