maxiappleton-kubernetes

Javascript Kubernetes Client information

The Javascript clients for Kubernetes is implemented in typescript, but can be called from either Javascript or Typescript.

For now, the client is implemented for server-side use with node using the request library.

There are future plans to also build a jQuery compatible library but for now, all of the examples and instructions assume the node client.

Installation

npm install @kubernetes/client-node

Example code

List all pods

const k8s = require('@kubernetes/client-node');

const kc = new k8s.KubeConfig();
kc.loadFromDefault();

const k8sApi = kc.makeApiClient(k8s.Core_v1Api);

k8sApi.listNamespacedPod('default').then((res) => {
    console.log(res.body);
});

Create a new namespace

const k8s = require('@kubernetes/client-node');

const kc = new k8s.KubeConfig();
kc.loadFromDefault();

const k8sApi = kc.makeApiClient(k8s.Core_v1Api);

var namespace = {
    metadata: {
        name: 'test',
    },
};

k8sApi.createNamespace(namespace).then(
    (response) => {
        console.log('Created namespace');
        console.log(response);
        k8sApi.readNamespace(namespace.metadata.name).then((response) => {
            console.log(response);
            k8sApi.deleteNamespace(namespace.metadata.name, {} /* delete options */);
        });
    },
    (err) => {
        console.log('Error!: ' + err);
    },
);

Create a cluster configuration programatically

const k8s = require('@kubernetes/client-node');

const cluster = {
    name: 'my-server',
    server: 'http://server.com',
};

const user = {
    name: 'my-user',
    password: 'some-password',
};

const context = {
    name: 'my-context',
    user: user.name,
    cluster: cluster.name,
};

const kc = new k8s.KubeConfig();
kc.loadFromOptions({
    clusters: [cluster],
    users: [user],
    contexts: [context],
    currentContext: context.name,
});
const k8sApi = kc.makeApiClient(k8s.Core_v1Api);
...

Additional Examples

There are several more examples in the examples directory.

Development

All dependencies of this project are expressed in its package.json file. Before you start developing, ensure that you have NPM installed, then run:

npm install

(re) Generating code

cd ../
git clone https://github.com/kubernetes-client/gen
cd javascript
../gen/openapi/typescript.sh src settings

Formatting

Run npm run format or install an editor plugin like https://github.com/prettier/prettier-vscode.

Linting

Run npm run lint or install an editor plugin like https://github.com/Microsoft/vscode-typescript-tslint-plugin

Testing

Tests are written using the Chai library. See config_test.ts for an example.

To run tests, execute the following:

npm test

Contributing

Please see CONTRIBUTING.md for instructions on how to contribute.