Kubernetes(k8s)-Depolyment方式部署应用

作者：myluzh 发布于：2023-6-15 分类： Kubernetes 长度：4294 阅读：398

0x01 命令行部署

[root@master ~]# kubectl run testapp --image=ccr.ccs.tencentyun.com/k8s-tutorial/test-k8s:v1

[root@master ~]# kubectl get pod
NAME      READY   STATUS              RESTARTS   AGE
testapp   0/1     ContainerCreating   0          16s

0x02 pod部署

1.编写pod.yaml

apiVersion: v1
kind: Pod
metadata:
  name: test-pod
spec:
  # 定义容器，可以多个
  containers:
    - name: test-k8s # 容器名字
      image: ccr.ccs.tencentyun.com/k8s-tutorial/test-k8s:v1 # 镜像

2.部署

[root@master ~]# kubectl apply -f ./pod.yaml
[root@master ~]# kubectl get pod            
NAME       READY   STATUS    RESTARTS   AGE
test-pod   1/1     Running   0          11s
testapp    1/1     Running   0          8m16s

0x03 Depolyment部署

Depolyment通过lables关联pods
点击查看原图

1.编写hellohttp.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  # 部署名字
  name: hellohttp
spec:
  replicas: 5
  # 用来查找关联的 Pod，所有标签都匹配才行
  selector:
    matchLabels:
      app: hellohttp
  # 定义 Pod 相关数据
  template:
    metadata:
      labels:
        app: hellohttp
    spec:
      # 定义容器，可以多个
      containers:
        - name: hellohttp # 容器名字
          image: registry.cn-hangzhou.aliyuncs.com/myluzh/hellohttp:v1 # 镜像

2.部署

[root@master hellohttp]# kubectl apply -f app.yaml 
[root@master hellohttp]# kubectl get pod -o wide
NAME&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;READY&nbsp; &nbsp;STATUS&nbsp; &nbsp; RESTARTS&nbsp; &nbsp;AGE&nbsp; &nbsp;IP&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; NODE&nbsp; &nbsp; NOMINATED NODE&nbsp; &nbsp;READINESS GATES
hellohttp-78c5857bbd-5v6m6&nbsp; &nbsp;1/1&nbsp; &nbsp; &nbsp;Running&nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 15m&nbsp; &nbsp;10.32.0.3&nbsp; &nbsp;node2&nbsp; &nbsp;&lt;none&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;none&gt;
hellohttp-78c5857bbd-b4jg4&nbsp; &nbsp;1/1&nbsp; &nbsp; &nbsp;Running&nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 15m&nbsp; &nbsp;10.40.0.4&nbsp; &nbsp;node1&nbsp; &nbsp;&lt;none&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;none&gt;
hellohttp-78c5857bbd-pfdkv&nbsp; &nbsp;1/1&nbsp; &nbsp; &nbsp;Running&nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 15m&nbsp; &nbsp;10.40.0.3&nbsp; &nbsp;node1&nbsp; &nbsp;&lt;none&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;none&gt;
hellohttp-78c5857bbd-xjkvr&nbsp; &nbsp;1/1&nbsp; &nbsp; &nbsp;Running&nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 15m&nbsp; &nbsp;10.32.0.2&nbsp; &nbsp;node2&nbsp; &nbsp;&lt;none&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;none&gt;
hellohttp-78c5857bbd-z4n4q&nbsp; &nbsp;1/1&nbsp; &nbsp; &nbsp;Running&nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 15m&nbsp; &nbsp;10.32.0.4&nbsp; &nbsp;node2&nbsp; &nbsp;&lt;none&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;none&gt;

3.使用 describe查看pod状态

[root@master hellohttp]# kubectl describe pod/hellohttp-78c5857bbd-5v6m6

注意：如果发现 Events 中有如下报错："network: open /run/flannel/subnet.env: no such file or directory"，解决方案
在每个节点创建文件/run/flannel/subnet.env写入以下内容，配置后等待一会就好了。

FLANNEL_NETWORK=10.244.0.0/16
FLANNEL_SUBNET=10.244.0.1/24
FLANNEL_MTU=1450
FLANNEL_IPMASQ=true

k8s k8s-depolyment kubernetes

正文到此结束

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文章标题：《Kubernetes(k8s)-Depolyment方式部署应用》