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Merge pull request #40344 from zdover23/wip-doc-cephadm-index-rewrite-2021-Mar-23

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doc/cephadm: rewrite "index.rst"

Reviewed-by: Josh Durgin <jdurgin@redhat.com>
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zdover23 2021-03-25 00:09:01 +10:00 committed by GitHub
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@ -4,19 +4,20 @@
Cephadm
=======
Cephadm deploys and manages a Ceph cluster by connection to hosts from the
manager daemon via SSH to add, remove, or update Ceph daemon containers. It
does not rely on external configuration or orchestration tools like Ansible,
Rook, or Salt.
``cephadm`` deploys and manages a Ceph cluster. It does this by connecting the
manager daemon to hosts via SSH. The manager daemon is able to add, remove, and
update Ceph containers. ``cephadm`` does not rely on external configuration
tools such as Ansible, Rook, and Salt.
Cephadm manages the full lifecycle of a Ceph cluster. It starts
by bootstrapping a tiny Ceph cluster on a single node (one monitor and
one manager) and then uses the orchestration interface ("day 2"
commands) to expand the cluster to include all hosts and to provision
all Ceph daemons and services. This can be performed via the Ceph
command-line interface (CLI) or dashboard (GUI).
``cephadm`` manages the full lifecycle of a Ceph cluster. This lifecycle
starts with the bootstrapping process, when ``cephadm`` creates a tiny
Ceph cluster on a single node. This cluster consists of one monitor and
one manager. ``cephadm`` then uses the orchestration interface ("day 2"
commands) to expand the cluster, adding all hosts and provisioning all
Ceph daemons and services. Management of this lifecycle can be performed
either via the Ceph command-line interface (CLI) or via the dashboard (GUI).
Cephadm is new in the Octopus v15.2.0 release and does not support older
``cephadm`` is new in Ceph release v15.2.0 (Octopus) and does not support older
versions of Ceph.
.. note::