Components of any type can specify the endpoints that the container exposes. These endpoints can be made accessible to the users if the Devfile cluster is running using a Kubernetes ingress or an OpenShift route and to the other components within the workspace. You can create an endpoint for your application or database, if your application or database server is listening on a port and you want to be able to directly interact with it yourself or you want other components to interact with it.
Specify endpoints properties as shown in the following example:Example 1. Specifying endpoint properties
schemaVersion: 2.1.0 metadata: name: mydevfile projects: - name: my-go-project clonePath: go/src/github.com/acme/my-go-project git: remotes: origin: "https://github.com/acme/my-go-project.git" components: - name: go container: image: golang memoryLimit: 512Mi mountSources: true command: ['sleep', 'infinity'] env: - name: gopath value: $(PROJECTS_ROOT)/go - name: gocache value: /tmp/go-cache endpoints: - name: web targetPort: 8080 exposure: public - name: postgres container: image: postgres memoryLimit: 512Mi env: - name: postgres_user value: user - name: postgres_password value: password - name: postgres_db value: database endpoints: - name: postgres targetPort: 5432 exposure: none
Here, there are two container, each defining a single endpoint. Endpoint is an accessible port that can be made accessible inside the workspace or publicly from the UI. Each endpoint has a name and port, which is the port on which certain server running inside the container is listening. The following are a few attributes that you can set on the endpoint:
exposure: When its value is
public, the endpoint is accessible outside the workspace. Users can access such an endpoint from the Devfile user interface and is always exposed on port
443depending on whether TLS is enabled in Devfile.
protocol: For public endpoints, the protocol is a hint to the UI on how to construct the URL for the endpoint access. Typical values are
secure: A boolean defaulting to
falsethat specifies whether the endpoint is put behind a JWT proxy requiring a JWT workspace token to grant access. The JWT proxy is deployed in the same Pod as the server and assumes the server listens solely on the local loopback interface, such as
Listening on any other interface than the local loopback poses a security risk because such server is accessible without the JWT authentication within the cluster network on the corresponding IP addresses.
path: The URL of the endpoint.
When starting a new server within a component, Devfile autodetects this, and the UI offers to automatically expose this port as an
exposure port. This exposure is useful for debugging a web application. It is impossible to do this for servers that autostart with the container, for example, a database server. For such components, specify the endpoints explicitly.
schemaVersion: 2.1.0 metadata: name: mydevfile components: - openshift: name: webapp uri: webapp.yaml endpoints: - name: 'web' targetPort: 8080 exposure: public - openshift: name: mongo uri: mongo-db.yaml endpoints: - name: 'mongo-db' targetPort: 27017 exposure: public