javascript - 使用Kubernetes JavaScript客户端的createDeployment()

Question

我正在尝试使用Kubernetes Javascript客户端创建一个部署或副本集。 Kubernetes javascript客户端文档实际上不存在。
有什么办法可以做到这一点？

Answer 1

假设通过:

createDeployment()

您所指的

:createNamespacedDeployment()

您可以使用以下代码段通过Javascript客户端库创建Deployment:

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

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

const k8sApi = kc.makeApiClient(k8s.AppsV1Api); // <-- notice the AppsV1Api

// Definition of the deployment
var amazingDeployment = {
    metadata: {
       name: 'nginx-deployment'
    },
    spec: {
       selector: {
          matchLabels: {
             app: 'nginx'
          }
       },
       replicas: 3,
       template: {
          metadata: {
             labels: {
                app: 'nginx'
             }
          },
          spec: {
             containers: [
                {
                   name: 'nginx',
                   image: 'nginx'
                   
                } ]
          }
       }
    }
 };

// Sending the request to the API
k8sApi.createNamespacedDeployment('default', amazingDeployment).then(
  (response) => {
    console.log('Yay! \nYou spawned: ' + amazingDeployment.metadata.name);
  },
  (err) => {
    console.log('Oh no. Something went wrong :(');
    // console.log(err) <-- Get the full output!
  }
);

Disclaimer!

This code assumes that you have your ~/.kube/config already configured!

使用以下命令首次运行此代码:

$ node deploy.js

应该输出:

Yay! 
You spawned: nginx-deployment

您可以通过以下方式检查Deployment是否存在:

$ kubectl get deployment nginx-deployment

NAME               READY   UP-TO-DATE   AVAILABLE   AGE
nginx-deployment   3/3     3            3           6m57s

再次运行此代码将输出(部署已存在!):

Oh no. Something went wrong :(

其他资源:

Github.com: Kubernetes-client: Javascript