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    The ops library
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The ops library documentation
The ops library documentation
  • Tutorials
    • Write your first machine charm
    • From zero to hero: Write your first Kubernetes charm
      • Set up your development environment
      • Study your application
      • Create a minimal Kubernetes charm
      • Make your charm configurable
      • Expose the version of the application behind your charm
      • Integrate your charm with PostgreSQL
      • Preserve your charm’s data
      • Expose operational tasks via actions
      • Observe your charm with COS Lite
      • Write unit tests for your charm
      • Write scenario tests for your charm
      • Write integration tests for your charm
      • Open a Kubernetes port in your charm
      • Publish your charm on Charmhub
  • How-to guides
    • Run workloads with a machine charm
    • Run workloads with a Kubernetes charm
    • Manage logs
    • Manage storage
    • Manage resources
    • Manage actions
    • Manage configurations
    • Manage relations
    • Manage leadership changes
    • Manage libraries
    • Manage interfaces
    • Manage secrets
    • Manage stored state
    • Manage opened ports
    • Manage the charm version
    • Manage the workload version
    • Write unit tests for a charm
    • Write integration tests for a charm
    • Legacy how-to guides
      • Write legacy unit tests for a charm
      • Turn a hooks-based charm into an ops charm
  • Reference
    • ops.main entry point
    • ops
    • ops.pebble
    • ops.testing (was: Scenario)
    • ops.testing.Harness (legacy unit testing)
  • Explanation
    • Charm-relation-interfaces
    • Testing
    • Holistic vs delta charms
    • How, and when, to defer events
    • StoredState: Uses, Limitations
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Explanation¶

  • Charm-relation-interfaces
  • Testing
  • Holistic vs delta charms
  • How, and when, to defer events
  • StoredState: Uses, Limitations
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Last updated on Mar 21, 2025
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Contents
  • Explanation