kubernetes Deployment介绍

本文主要是介绍kubernetes Deployment介绍，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

 

一、deployment

Deployment在继承Pod和Replicaset的所有特性的同时, 它可以实现对template模板进行实时滚动更新并具备我们线上的Application life circle的特性.

二、操作命令

1. 创建deployment

vi deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:name: httpd-deploymentlabels:app: httpd-deployment
spec:replicas: 2selector:matchLabels:app: httpd-demotemplate:metadata:labels:app: httpd-demospec:containers:- name: httpdimage: httpdimagePullPolicy: Alwaysports:- containerPort: 80env:- name: VERSIONvalue: "v1"

 

kubectl create -f deployment.yaml

 

2. 查看Deployment

kubectl get deployment

 

kubectl get pods -o wide

 

kubectl describe deployment

 

3. 更新deployment

 

# 通过此命令可以呼出vi编辑器对模板进行编辑.
kubectl edit -f deployment.yaml# 通过此命令使当前编辑结果生效.
kubectl apply -f deployment.yaml# 再次查看可以看到老版本的deployment已经下架, 新版本的已经生效.
kubectl get deployment

 

4. 扩容与缩容

# 可以修改replicas的赋值对deployment进行扩容与缩容
kubectl scale deployment/httpd-deployment --replicas=1

 

 

5. 删除deployment

kubectl delete deployment httpd-deployment

 

 

https://blog.csdn.net/bbwangj/article/details/81812675

 

 

 

 

 

 

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