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Juju documentation
Juju documentation
  • Tutorial
  • How-to guides
    • Manage your deployment
      • Manage your deployment environment
      • Harden your deployment
      • Upgrade your deployment
      • Troubleshoot your deployment
      • Take your deployment offline
    • Manage juju
    • Manage plugins
    • Manage clouds
    • Manage credentials
    • Manage metadata
    • Manage controllers
    • Manage the Juju dashboard
    • Manage users
    • Manage SSH keys
    • Manage models
    • Manage logs
    • Manage charms or bundles
    • Manage applications
    • Manage resources
    • Manage actions
    • Manage relations
    • Manage offers
    • Manage units
    • Manage secrets
    • Manage secret backends
    • Manage machines
    • Manage storage
    • Manage storage pools
    • Manage spaces
    • Manage subnets
    • Define resource tags in a cloud
    • Fan container networking
  • Reference
    • Action
    • Agent
    • Application
    • Bundle
    • Charm
      • Charm development best practices
      • Charm maturity
    • Cloud (substrate)
      • List of supported clouds
        • Amazon EC2
        • Amazon EKS
        • Equinix Metal
        • Google GCE
        • Google GKE
        • LXD
        • MAAS
        • Manual
        • MicroK8s
        • Microsoft Azure
        • Microsoft AKS
        • OpenStack
        • Oracle OCI
        • VMware vSphere
      • Kubernetes clouds and Juju
    • Configuration
      • List of controller configuration keys
        • audit-log-exclude-methods
        • juju-ha-space
        • juju-mgmt-space
      • List of model configuration keys
    • Constraint
    • containeragent
    • Controller
    • Credential
    • High availability (HA)
    • Hook
    • Hook command
      • List of hook commands
        • action-fail
        • action-get
        • action-log
        • action-set
        • add-metric
        • application-version-set
        • close-port
        • config-get
        • credential-get
        • goal-state
        • is-leader
        • juju-log
        • juju-reboot
        • leader-get
        • leader-set
        • network-get
        • open-port
        • opened-ports
        • payload-register
        • payload-status-set
        • payload-unregister
        • relation-get
        • relation-ids
        • relation-list
        • relation-model-get
        • relation-set
        • resource-get
        • secret-add
        • secret-get
        • secret-grant
        • secret-ids
        • secret-info-get
        • secret-remove
        • secret-revoke
        • secret-set
        • state-delete
        • state-get
        • state-set
        • status-get
        • status-set
        • storage-add
        • storage-get
        • storage-list
        • unit-get
    • Juju
      • Juju component cross-version compatibility
      • Juju Roadmap & Releases
    • juju CLI
      • List of juju CLI commands
        • juju actions
        • juju add-cloud
        • juju add-credential
        • juju add-k8s
        • juju add-machine
        • juju add-model
        • juju add-secret
        • juju add-secret-backend
        • juju add-space
        • juju add-ssh-key
        • juju add-storage
        • juju add-unit
        • juju add-user
        • juju agree
        • juju agreements
        • juju attach-resource
        • juju attach-storage
        • juju autoload-credentials
        • juju bind
        • juju bootstrap
        • juju cancel-task
        • juju change-user-password
        • juju charm-resources
        • juju clouds
        • juju collect-metrics
        • juju config
        • juju constraints
        • juju consume
        • juju controller-config
        • juju controllers
        • juju create-backup
        • juju create-storage-pool
        • juju credentials
        • juju dashboard
        • juju debug-code
        • juju debug-hook
        • juju debug-hooks
        • juju debug-log
        • juju default-credential
        • juju default-region
        • juju deploy
        • juju destroy-controller
        • juju destroy-model
        • juju detach-storage
        • juju diff-bundle
        • juju disable-command
        • juju disable-user
        • juju disabled-commands
        • juju documentation
        • juju download
        • juju download-backup
        • juju enable-command
        • juju enable-destroy-controller
        • juju enable-ha
        • juju enable-user
        • juju exec
        • juju export-bundle
        • juju expose
        • juju find
        • juju find-offers
        • juju firewall-rules
        • juju grant
        • juju grant-cloud
        • juju grant-secret
        • juju help
        • juju help-action-commands
        • juju help-hook-commands
        • juju import-filesystem
        • juju import-ssh-key
        • juju info
        • juju integrate
        • juju kill-controller
        • juju list-actions
        • juju list-agreements
        • juju list-charm-resources
        • juju list-clouds
        • juju list-controllers
        • juju list-credentials
        • juju list-disabled-commands
        • juju list-firewall-rules
        • juju list-machines
        • juju list-models
        • juju list-offers
        • juju list-operations
        • juju list-payloads
        • juju list-regions
        • juju list-resources
        • juju list-secret-backends
        • juju list-secrets
        • juju list-spaces
        • juju list-ssh-keys
        • juju list-storage
        • juju list-storage-pools
        • juju list-subnets
        • juju list-users
        • juju login
        • juju logout
        • juju machines
        • juju metrics
        • juju migrate
        • juju model-config
        • juju model-constraints
        • juju model-default
        • juju model-defaults
        • juju models
        • juju move-to-space
        • juju offer
        • juju offers
        • juju operations
        • juju payloads
        • juju refresh
        • juju regions
        • juju register
        • juju relate
        • juju reload-spaces
        • juju remove-application
        • juju remove-cloud
        • juju remove-credential
        • juju remove-k8s
        • juju remove-machine
        • juju remove-offer
        • juju remove-relation
        • juju remove-saas
        • juju remove-secret
        • juju remove-secret-backend
        • juju remove-space
        • juju remove-ssh-key
        • juju remove-storage
        • juju remove-storage-pool
        • juju remove-unit
        • juju remove-user
        • juju rename-space
        • juju resolve
        • juju resolved
        • juju resources
        • juju resume-relation
        • juju retry-provisioning
        • juju revoke
        • juju revoke-cloud
        • juju revoke-secret
        • juju run
        • juju scale-application
        • juju scp
        • juju secret-backends
        • juju secrets
        • juju set-application-base
        • juju set-constraints
        • juju set-credential
        • juju set-default-credentials
        • juju set-default-region
        • juju set-firewall-rule
        • juju set-meter-status
        • juju set-model-constraints
        • juju show-action
        • juju show-application
        • juju show-cloud
        • juju show-controller
        • juju show-credential
        • juju show-credentials
        • juju show-machine
        • juju show-model
        • juju show-offer
        • juju show-operation
        • juju show-secret
        • juju show-secret-backend
        • juju show-space
        • juju show-status-log
        • juju show-storage
        • juju show-task
        • juju show-unit
        • juju show-user
        • juju spaces
        • juju ssh
        • juju ssh-keys
        • juju status
        • juju storage
        • juju storage-pools
        • juju subnets
        • juju suspend-relation
        • juju switch
        • juju sync-agent-binary
        • juju trust
        • juju unexpose
        • juju unregister
        • juju update-cloud
        • juju update-credential
        • juju update-credentials
        • juju update-k8s
        • juju update-public-clouds
        • juju update-secret
        • juju update-secret-backend
        • juju update-storage-pool
        • juju upgrade-controller
        • juju upgrade-machine
        • juju upgrade-model
        • juju users
        • juju version
        • juju wait-for
        • juju wait-for_application
        • juju wait-for_machine
        • juju wait-for_model
        • juju wait-for_unit
        • juju whoami
      • juju environment variables
    • juju-dashboard (The Juju dashboard)
    • juju web CLI
    • jujuc
    • jujud
    • Log
    • Machine
    • Simplestreams metadata
    • Model
    • Offer
    • Pebble
    • Placement directive
    • Plugin
      • List of known Juju plugins
        • Plugin juju-metadata
        • Plugin juju-stash
      • Plugin flags
    • Relation (integration)
    • Removing things
    • Resource (charm)
    • Resource (compute)
      • List of commands available on a compute resource provisioned by Juju
        • juju-dumplogs
        • juju-exec
        • juju-introspect
          • List of juju-introspect macros
            • juju_controller_agent_name
            • juju_cpu_profile
            • juju_engine_report
            • juju_goroutines
            • juju_heap_profile
            • juju_controller_agent_name
            • juju_machine_lock
            • juju_metrics
            • juju_presence_report
            • juju_pubsub_report
            • juju_start_unit
            • juju_statepool_report
            • juju_statetracker_report
            • juju_stop_unit
            • juju_unit_agent_name
            • juju_unit_status
    • Scaling
    • Script
    • Secret
    • Space
    • SSH key
    • Status
    • Storage
    • Subnet
    • Telemetry
    • Unit
    • Upgrading things
    • User
    • Worker
    • Zone
  • Explanation
    • Application modelling
    • About charming history
    • Charms vs. Kubernetes operators
    • Juju architecture
    • Performance with Juju
    • Juju security
  • For contributors
    • How-to guides
      • Compile and run Juju agents on different architectures
      • Create a unit test suite
      • Create a new MongoDB collection
      • Define a new collection in Juju DB
      • Define a new entity collection structure
      • Develop an API to manipulate collection entities
      • Debug a Dqlite core dump issue
      • Manage MongoDB
      • Merge forward
      • Write a unit test
      • Write an integration test
      • Write tests
    • Reference
      • Agent
      • Juju architectural overview
      • Binary container agent
      • Catacombs
      • Conventional commits
      • CVEs
      • Dependency Package
      • Entity lifecycle
      • High Availability (HA)
      • Testing
        • Integration testing
          • Integration test suite
          • Test include
        • Unit testing
          • Checker
          • Unit test suite
          • Util suite
      • Tomb package
      • Worker
      • Worker interface
      • Worker package
      • Writing workers
Back to top

Explanation¶

Discussion and clarification of key topics, providing background information and context.

Juju at a glance¶

  • Architecture

  • Security

  • Performance

Juju vs. other operations solutions¶

  • Application modelling

  • Charms vs. Kubernetes operators

Some history¶

  • About charming history

Copyright © 2025 CC-BY-SA, Canonical Ltd.
Last updated on May 08, 2025
Contents
  • Explanation
    • Juju at a glance
    • Juju vs. other operations solutions
    • Some history