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Charmcraft documentation
Charmcraft documentation
  • Tutorials
    • Write your first Kubernetes charm for a Django app
    • Write your first Kubernetes charm for an Express app
    • Write your first Kubernetes charm for a FastAPI app
    • Write your first Kubernetes charm for a Flask app
    • Write your first Kubernetes charm for a Go app
    • Write your first Kubernetes charm for a Spring Boot app
  • How-to guides
    • Manage Charmcraft
    • Manage charms
    • Manage 12-factor app charms
      • Configure your 12-factor app charm
      • Integrate your 12-factor app charm
      • Use your 12-factor app charm
      • Use a database with your 12-factor app charm
    • Manage extensions
    • Manage resources
    • Manage libraries
    • Manage parts
    • Manage the current Charmhub user
    • Manage names
    • Manage revisions
    • Manage channels
    • Manage tracks
    • Manage icons
    • Migrate plugins
      • Migrate to poetry
      • Migrate to python
      • Migrate to uv
    • Migrate bases
      • Change to Ubuntu 26.04
    • Build
      • Cache intermediate build artefacts
      • Pack a hook-based charm with Charmcraft
      • Pack a reactive charm with Charmcraft
      • Select charm platforms
  • Reference
    • Analyzers and linters
    • Commands
      • analyse
      • build
      • clean
      • close
      • create-lib
      • create-track
      • expand-extensions
      • fetch-libs
      • init
      • list-extensions
      • list-lib
      • login
      • logout
      • names
      • pack
      • prime
      • promote
      • publish-lib
      • pull
      • register
      • release
      • remote-build
      • resource-revisions
      • resources
      • revisions
      • set-resource-architectures
      • stage
      • status
      • test
      • unregister
      • upload
      • upload-resource
      • version
      • whoami
    • Extensions
      • Django framework extension
      • Express framework extension
      • FastAPI framework extension
      • Flask framework extension
      • Go framework extension
      • Spring Boot framework extension
    • Files
      • actions.yaml file
      • charmcraft.yaml file
      • config.yaml file
      • CONTRIBUTING.md file
      • dispatch
      • icon.svg file
      • <libname>.py file
      • LICENSE file
      • lxd-profile.yaml file
      • manifest.yaml file
      • metadata.yaml file
      • pyproject.toml file
      • README.md file
      • requirements.txt file
      • src/charm.py file
      • src/<workload>.py file
      • tests/unit/test_charm.py file
      • tests/integration/conftest.py file
      • tests/integration/test_charm.py file
      • tox.ini file
      • uv.lock file
    • Parts
      • Part properties
      • Parts and Steps
      • Step execution environment
      • Plugin variables
      • Filesets
      • Lifecycle details
      • Plugins
        • Dump plugin
        • Nil plugin
        • Python plugin
        • Poetry plugin
        • uv plugin
    • Platforms
    • Profile
    • Changelog
  • Explanation
    • Bases
    • Cryptographic technology
  • Contribute to this documentation
  • Release notes
    • Charmcraft 4.2
    • Charmcraft 4.1
    • Charmcraft 4.0
    • Charmcraft 3.5
    • Charmcraft 3.4
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Migrate basesΒΆ

These guides describe how to migrate a charm from one Ubuntu base to another.

  • Change to Ubuntu 26.04
    • Migrate from the charm plugin
    • Update the base
    • Update part names
Copyright © 2023-2026, Canonical
Last updated on Apr 27, 2026
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Contents
  • Migrate bases