mirror of
https://github.com/ceph/ceph
synced 2024-12-13 06:57:21 +00:00
119 lines
3.1 KiB
ReStructuredText
119 lines
3.1 KiB
ReStructuredText
==============
|
|
Upgrading Ceph
|
|
==============
|
|
|
|
Cephadm is capable of safely upgrading Ceph from one bugfix release to
|
|
another. For example, you can upgrade from v15.2.0 (the first Octopus
|
|
release) to the next point release v15.2.1.
|
|
|
|
The automated upgrade process follows Ceph best practices. For example:
|
|
|
|
* The upgrade order starts with managers, monitors, then other daemons.
|
|
* Each daemon is restarted only after Ceph indicates that the cluster
|
|
will remain available.
|
|
|
|
Keep in mind that the Ceph cluster health status is likely to switch to
|
|
`HEALTH_WARNING` during the upgrade.
|
|
|
|
|
|
Starting the upgrade
|
|
====================
|
|
|
|
Before you start, you should verify that all hosts are currently online
|
|
and your cluster is healthy.
|
|
|
|
::
|
|
|
|
# ceph -s
|
|
|
|
To upgrade (or downgrade) to a specific release::
|
|
|
|
# ceph orch upgrade start --ceph-version <version>
|
|
|
|
For example, to upgrade to v15.2.1::
|
|
|
|
# ceph orch upgrade start --ceph-version 15.2.1
|
|
|
|
|
|
Monitoring the upgrade
|
|
======================
|
|
|
|
Determine whether an upgrade is in process and what version the cluster is
|
|
upgrading to with::
|
|
|
|
# ceph orch upgrade status
|
|
|
|
While the upgrade is underway, you will see a progress bar in the ceph
|
|
status output. For example::
|
|
|
|
# ceph -s
|
|
[...]
|
|
progress:
|
|
Upgrade to docker.io/ceph/ceph:v15.2.1 (00h 20m 12s)
|
|
[=======.....................] (time remaining: 01h 43m 31s)
|
|
|
|
You can also watch the cephadm log with::
|
|
|
|
# ceph -W cephadm
|
|
|
|
|
|
Canceling an upgrade
|
|
====================
|
|
|
|
You can stop the upgrade process at any time with::
|
|
|
|
# ceph orch upgrade stop
|
|
|
|
|
|
Potential problems
|
|
==================
|
|
|
|
There are a few health alerts that can arise during the upgrade process.
|
|
|
|
UPGRADE_NO_STANDBY_MGR
|
|
----------------------
|
|
|
|
Ceph requires an active and standby manager daemon in order to proceed, but
|
|
there is currently no standby.
|
|
|
|
You can ensure that Cephadm is configured to run 2 (or more) managers with::
|
|
|
|
# ceph orch apply mgr 2 # or more
|
|
|
|
You can check the status of existing mgr daemons with::
|
|
|
|
# ceph orch ps --daemon-type mgr
|
|
|
|
If an existing mgr daemon has stopped, you can try restarting it with::
|
|
|
|
# ceph orch daemon restart <name>
|
|
|
|
UPGRADE_FAILED_PULL
|
|
-------------------
|
|
|
|
Ceph was unable to pull the container image for the target version.
|
|
This can happen if you specify an version or container image that does
|
|
not exist (e.g., 1.2.3), or if the container registry is not reachable from
|
|
one or more hosts in the cluster.
|
|
|
|
You can cancel the existing upgrade and specify a different target version with::
|
|
|
|
# ceph orch upgrade stop
|
|
# ceph orch upgrade start --ceph-version <version>
|
|
|
|
|
|
Using customized container images
|
|
=================================
|
|
|
|
For most users, simplify specifying the Ceph version is sufficient.
|
|
Cephadm will locate the specific Ceph container image to use by
|
|
combining the ``container_image_base`` configuration option (default:
|
|
``docker.io/ceph/ceph``) with a tag of ``vX.Y.Z``.
|
|
|
|
You can also upgrade to an arbitrary container image. For example, to
|
|
upgrade to a development build::
|
|
|
|
# ceph orch upgrade start --image quay.io/ceph-ci/ceph:recent-git-branch-name
|
|
|
|
For more information about available container images, see :ref:`containers`.
|