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Merged
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Jun 27, 2023
Merged

More Ceph-related updates #43

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c75cb05
Resctructure Ceph paragraphs
cityofships May 6, 2023
f420e47
Clarify shell commands usage
cityofships May 26, 2023
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15 changes: 10 additions & 5 deletions source/ceph_storage.rst
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Expand Up @@ -16,11 +16,6 @@ Ceph Storage

The Ceph deployment is not managed by StackHPC Ltd.

Troubleshooting
===============

.. include:: include/ceph_troubleshooting.rst

Working with Ceph deployment tool
=================================

Expand All @@ -31,3 +26,13 @@ Working with Ceph deployment tool
.. ifconfig:: deployment['cephadm']

.. include:: include/cephadm.rst

Operations
==========

.. include:: include/ceph_operations.rst

Troubleshooting
===============

.. include:: include/ceph_troubleshooting.rst
26 changes: 26 additions & 0 deletions source/include/ceph_operations.rst
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@@ -0,0 +1,26 @@


Replacing drive
---------------

See upstream documentation:
https://docs.ceph.com/en/quincy/cephadm/services/osd/#replacing-an-osd

In case where disk holding DB and/or WAL fails, it is necessary to recreate
(using replacement procedure above) all OSDs that are associated with this
disk - usually NVMe drive. The following single command is sufficient to
identify which OSDs are tied to which physical disks:

.. code-block:: console

ceph# ceph device ls

Host maintenance
----------------

https://docs.ceph.com/en/quincy/cephadm/host-management/#maintenance-mode

Upgrading
---------

https://docs.ceph.com/en/quincy/cephadm/upgrade/
9 changes: 6 additions & 3 deletions source/include/cephadm.rst
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Expand Up @@ -34,14 +34,17 @@ cephadm based playbooks utilising stackhpc.cephadm Ansible Galaxy collection.
Running Ceph commands
=====================

Ceph commands can be run via ``cephadm shell`` utility container:
Ceph commands are usually run inside a ``cephadm shell`` utility container:

.. code-block:: console

ceph# cephadm shell

This command will be only successful on ``mons`` group members (the admin key
is copied only to those nodes).
Operating a cluster requires a keyring with an admin access to be available for Ceph
commands. Cephadm will copy such keyring to the nodes carrying
`_admin <https://docs.ceph.com/en/quincy/cephadm/host-management/#special-host-labels>`__
label - present on MON servers by default when using
`StackHPC Cephadm collection <https://github.com/stackhpc/ansible-collection-cephadm>`__.

Adding a new storage node
=========================
Expand Down