addons.en.md

title	date	weight	description
Addons	2019-07-31	4	How to develop minikube addons

Adding a New Addon

To add a new addon to minikube the following steps are required:

• For the new addon's .yaml file(s):

  • Put the required .yaml files for the addon in the minikube/deploy/addons directory.
  • Add the kubernetes.io/minikube-addons: <NEW_ADDON_NAME> label to each piece of the addon (ReplicationController, Service, etc.)
  • Also, addonmanager.kubernetes.io/mode annotation is needed so that your resources are picked up by the addon-manager minikube addon.
  • In order to have minikube addons open <NEW_ADDON_NAME> work properly, the kubernetes.io/minikube-addons-endpoint: <NEW_ADDON_NAME> label must be added to the appropriate endpoint service (what the user would want to open/interact with). This service must be of type NodePort.

• To add the addon into minikube commands/VM:

  • Add the addon with appropriate fields filled into the Addon dictionary, see this commit and example.

  // cmd/minikube/cmd/config/config.go
  var settings = []Setting{
    ...,
    // add other addon setting
    {
      name:        "efk",
      set:         SetBool,
      validations: []setFn{IsValidAddon},
      callbacks:   []setFn{EnableOrDisableAddon},
    },
  }

  • Add the addon to settings list, see this commit and example.

  // pkg/minikube/assets/addons.go
  var Addons = map[string]*Addon{
    ...,
    // add other addon asset
    "efk": NewAddon([]*BinAsset{
      MustBinAsset(
        "deploy/addons/efk/efk-configmap.yaml",
        constants.AddonsPath,
        "efk-configmap.yaml",
        "0640"),
      MustBinAsset(
        "deploy/addons/efk/efk-rc.yaml",
        constants.AddonsPath,
        "efk-rc.yaml",
        "0640"),
      MustBinAsset(
        "deploy/addons/efk/efk-svc.yaml",
        constants.AddonsPath,
        "efk-svc.yaml",
        "0640"),
    }, false, "efk"),
  }

• Rebuild minikube using make out/minikube. This will put the addon's .yaml binary files into the minikube binary using go-bindata.

• Test addon using minikube addons enable <NEW_ADDON_NAME> command to start service.