mirror of https://github.com/ceph/ceph-ansible.git
51 lines
1.3 KiB
ReStructuredText
51 lines
1.3 KiB
ReStructuredText
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Adding/Removing OSD(s) after a cluster is deployed is a common operation that should be straight-forward to achieve.
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Adding osd(s)
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-------------
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Adding new OSD(s) on an existing host or adding a new OSD node can be achieved by running the main playbook with the ``--limit`` ansible option.
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You basically need to update your host_vars/group_vars with the new hardware and/or the inventory host file with the new osd nodes being added.
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The command used would be like following:
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``ansible-playbook -vv -i <your-inventory> site-docker.yml --limit <node>``
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example:
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.. code-block:: shell
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$ cat hosts
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[mons]
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mon-node-1
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mon-node-2
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mon-node-3
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[mgrs]
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mon-node-1
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mon-node-2
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mon-node-3
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[osds]
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osd-node-1
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osd-node-2
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osd-node-3
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osd-node-99
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$ ansible-playbook -vv -i hosts site-docker.yml --limit osd-node-99
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Shrinking osd(s)
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----------------
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Shrinking OSDs can be done by using the shrink-osd.yml playbook provided in ``infrastructure-playbooks`` directory.
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The variable ``osd_to_kill`` is a comma separated list of OSD IDs which must be passed to the playbook (passing it as an extra var is the easiest way).
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The playbook will shrink all osds passed in ``osd_to_kill`` serially.
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example:
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.. code-block:: shell
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$ ansible-playbook -vv -i hosts infrastructure-playbooks/shrink-osds.yml -e osd_to_kill=1,2,3
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