使用vagrant搭建k8s节点四---使用yaml文件部署

Posted 2021-08-29 lovoo

1、生成deployment类型yaml

kubectl create deployment tomcat6 --image=tomcat:6.0.53-jre8 --dry-run -o yaml > tomcat6.yaml
cat  tomcat6.yaml

1.1、删除空内容后

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: tomcat6
  name: tomcat6
spec:
  replicas: 3
  selector:
    matchLabels:
      app: tomcat6
  template:
    metadata:
      labels:
        app: tomcat6
    spec:
      containers:
      - image: tomcat:6.0.53-jre8
        name: tomcat

1.2、运行删除无效信息后的yaml文件

kubectl apply -f tomcat6.yaml
#查看
kubectl get all

2、生成pot类型yaml

kubectl get pods

获得tomcat名称

输出到mypod.yaml文件中

kubectl get pods tomcat6-5f7ccf4cb9-2xrnr -o yaml > mypod.yaml

删除无效信息得到如下：

apiVersion: v1
kind: Pod
metadata:
  labels:
    app: tomcat6-1
  name: tomcat6-1
  namespace: default
spec:
  containers:
  - image: tomcat:6.0.53-jre8
    imagePullPolicy: IfNotPresent
    name: tomcat6-1
  - image: nginx
    imagePullPolicy: IfNotPresent
    name: nginx-1

生成pod

kubectl apply -f mypod.yaml

3、生成service类型yaml

生成yaml

kubectl expose deployment tomcat6 --port=80 --target-port=8080 --type=NodePort --dry-run -o yaml > myservice.yaml
cat myservice.yaml

如：

apiVersion: v1
kind: Service
metadata:
  creationTimestamp: null
  labels:
    app: tomcat6
  name: tomcat6
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 8080
  selector:
    app: tomcat6
  type: NodePort
status:
  loadBalancer: {}

将其合成到 tomcat6.yaml 中，使用 "—"线段 分隔

apiVersion: v1
kind: Service
metadata:
  creationTimestamp: null
  labels:
    app: tomcat6
  name: tomcat6
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 8080
  selector:
    app: tomcat6
  type: NodePort
status:
  loadBalancer: {}
[root@k8s-node1 k8s]# vi tomcat6.yaml 
[root@k8s-node1 k8s]# vi tomcat6.yaml 
[root@k8s-node1 k8s]# cat tomcat6.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: tomcat6
  name: tomcat6
spec:
  replicas: 3
  selector:
    matchLabels:
      app: tomcat6
  template:
    metadata:
      labels:
        app: tomcat6
    spec:
      containers:
      - image: tomcat:6.0.53-jre8
        name: tomcat
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: tomcat6
  name: tomcat6
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 8080
  selector:
    app: tomcat6
  type: NodePort

部署

kubectl apply -f tomcat6.yaml

发现创建 deployment 与 service被创建

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