odo deploy

odo can be used to deploy components in a similar manner they would be deployed by a CI/CD system, by first building the images of the containers to deploy, then by deploying the Kubernetes resources necessary to deploy the components.

When running the command odo deploy, odo searches for the default command of kind deploy in the devfile, and executes this command. The kind deploy is supported by the devfile format starting from version 2.2.0.

The deploy command is typically a composite command, composed of several apply commands:

• a command referencing an image component that, when applied, will build the image of the container to deploy, and push it to its registry,
• a command referencing a kubernetes component that, when applied, will create a Kubernetes resource in the cluster.

With the following example devfile.yaml file, a container image will be built by using the Dockerfile present in the directory, the image will be pushed to its registry and a Kubernetes Deployment will be created in the cluster, using this freshly built image.

schemaVersion: 2.2.0
[...]
variables:
  CONTAINER_IMAGE: quay.io/phmartin/myimage
commands:
  - id: build-image
    apply:
      component: outerloop-build
  - id: deployk8s
    apply:
      component: outerloop-deploy
  - id: deploy
    composite:
      commands:
        - build-image
        - deployk8s
      group:
        kind: deploy
        isDefault: true
components:
  - name: outerloop-build
    image:
      imageName: "{{CONTAINER_IMAGE}}"
      dockerfile:
        uri: ./Dockerfile
        buildContext: ${PROJECTS_ROOT}
  - name: outerloop-deploy
    kubernetes:
      inlined: |
        kind: Deployment
        apiVersion: apps/v1
        metadata:
          name: my-component
        spec:
          replicas: 1
          selector:
            matchLabels:
              app: node-app
          template:
            metadata:
              labels:
                app: node-app
            spec:
              containers:
                - name: main
                  image: {{CONTAINER_IMAGE}}

Sustituting variables

The Devfile can define variables to make the Devfile parameterizable. The Devfile can define values for these variables, and you can override the values for variables from the command line when running odo deploy, using the --var and --var-file options.

See Sustituting variables in odo dev for more information.