---
title: Charmhub | Deploy Canonical Observability Stack Lite using Charmhub - The Open
  Operator Collection
description: Deploy the latest version of Canonical Observability Stack Lite on any
  cloud.
url: https://charmhub.io/cos-lite/docs/how-to/migrate
---

##### We've discontinued the registration of new Bundles

New Bundle registrations are no longer accepted. Existing bundles remain functional. We recommend using the Juju Terraform Provider for new deployments.

[Learn more](https://discourse.charmhub.io/t/discontinuing-new-charmhub-bundle-registrations/15344)

# Canonical Observability Stack Lite

[Canonical Observability](https://charmhub.io/publisher/observability "View all packages from Canonical Observability")
| bundle

* [Canonical Observability](https://charmhub.io/publisher/observability "View all packages from Canonical Observability")
  | bundle

Platform:

stable 26

```
juju deploy cos-lite
```

[Learn to deploy on juju >](https://juju.is/docs/juju/manage-applications)

---

#### Relevant links

* [Homepage](https://github.com/canonical/cos-lite-bundle)

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#### Contacts

* [Submit a bug](https://github.com/canonical/cos-lite-bundle/issues)

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Share your thoughts on this charm with the community on discourse.

[Join the discussion](https://discourse.charmhub.io/)

---

[Add docs to a charm](https://juju.is/docs/sdk/add-docs-to-your-charmhub-page)

The main differences between COS Lite and COS HA from data perspective are that COS HA uses different charms for the logs and metrics backends. For metrics, Prometheus is replaced with Mimir. For logs, monolithic Loki is replaced with Loki HA.

Migrating data from Prometheus to Mimir or from one charm revision of Loki to another is complex and nuanced. At this point, we recommend a retention-based phase-out.

## [Migration via retention-based phase-out](https://charmhub.io/cos-lite/docs/how-to/migrate#p-34328-migration-via-retention-based-phase-out)

Deploy COS (HA) next to COS Lite, relating the new COS charms to the same applications COS Lite is related to. When the retention period elapses, switch to using the new COS deployment.

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