---
title: "Upgrading charms\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/ceph/docs/upgrading-charms?format=md
keywords: index, follow
---

*Submit*

# Upgrading charms

Prior to performing either a Ceph upgrade or an operating system upgrade all charms should be upgraded to their latest stable revision, which is the default behaviour of the `refresh` command (this can potentially be a multi-revision upgrade).

**Important:** The Ceph charms have been tested for single-step (revision) charm upgrades only (N+1).

The Juju command to use for upgrading charms is `refresh`. For extra guidance see [Update a charm](https://juju.is/docs/juju/manage-charms#heading--update-a-charm) in the Juju documentation.

In terms of the upgrade order, begin with ceph-mon, after which the remaining charms can be upgraded in any order. If using a charm delivered via the Charmhub:

```
juju refresh ceph-mon
```

Verify the success of an upgrade before moving on to the next charm. Do this by inspecting the juju status command output.

---

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Upgrading deployment software](https://ubuntu.com/ceph/docs/upgrading-deployment-software)
[Next

Upgrading node operating system](https://ubuntu.com/ceph/docs/upgrading-nodes)

This page was last modified 2 years ago. [Help improve this document in the forum](https://discourse.ubuntu.com/t/upgrading-charms/18776).