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kubectl

This step vendors the kubectl executable, and allows the user to execute a command. Most options are passed along to the kubectl executable as is.

Options:

  • debug (optional, default: false) List the kubectl before running it. Warning, all environment variables are expanded, including the password.
  • cmd (optional) The kubectl command which needs to be run.
  • raw-global-args (optional) Arguments that are placed before cmd.
  • raw-args (optional) Arguments that are placed after cmd.

Kubectl flags

The following options are available as wercker properties. The values are passed directly to the kubectl command. See the kubectl for the documentation.

  • all
  • current-replicas
  • deployment-label-key
  • file
  • grace-period
  • image
  • insecure-skip-tls-verify
  • interactive
  • output
  • overwrite
  • password
  • patch
  • pod
  • poll-interval
  • replicas
  • resource-version
  • rollback
  • selector
  • server
  • stdin
  • template
  • timeout
  • token
  • tty
  • update-period
  • username

If a flag is not available, use the raw-global-args or the raw-args option.

Example

deploy:
    steps:
      - kubectl:
          server: $KUBERNETES_MASTER
          username: $KUBERNETES_USERNAME
          password: $KUBERNETES_PASSWORD
          insecure-skip-tls-verify: true
          command: create -f cities-controller.json

Google Container Engine (GKE) clusters

Passing the contents of a Google service account private key JSON file in optional parameter gcloud-key-json will cause this step to use the gcloud SDK to authenticate kubectl for access to GKE with a Google service account.

You'll also need to pass:

  gcloud-key-json:
    type: string
    required: false
  gke-cluster-name:
    type: string
    required: false
  gke-cluster-zone:
    type: string
    required: false
  gke-cluster-project:
    type: string
    required: false

License

The MIT License (MIT)

Changelog

3.1.8

  • Add support for authenticating kubectl with GKE clusters with a Google service account.

3.0.0

  • Update to kubectl to version 1.3.4

2.1.0

  • Add certificate-authority, client-certificate, client-key

2.0.0

  • Update to kubectl to version 1.2.0

1.1.0

  • Update to kubectl to version 1.1.3

1.0.0

  • Initial release