kubernetes运行nginx

一 工作目录

root@k8s-master-01:/data/k8s/yaml# pwd
/data/k8s/yaml

二 创建名称空间

1.1 编写nginx-ns.yaml

root@k8s-master-01:/data/k8s/yaml# cat namespace/nginx-ns.yaml 
apiVersion: v1
kind: Namespace
metadata: 
  name: wgs

1.2 创建名称空间

root@k8s-master-01:/data/k8s/yaml# kubectl apply -f namespace/nginx-ns.yaml 
namespace/wgs created

1.3 查看名称空间

root@k8s-master-01:/data/k8s/yaml# kubectl get ns
NAME                   STATUS   AGE
default                Active   32d
kube-node-lease        Active   32d
kube-public            Active   32d
kube-system            Active   32d
kubernetes-dashboard   Active   31d
wgs                    Active   19s

三 编写nginx.yaml文件

查看代码

root@k8s-master-01:/data/k8s/yaml# cat nginx/nginx.yaml 
kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    app: wgs-nginx-deployment-label
  name: wgs-nginx-deployment
  namespace: wgs
spec:
  replicas: 1
  selector:
    matchLabels:
      app: wgs-nginx-selector
  template:
    metadata:
      labels:
        app: wgs-nginx-selector
    spec:
      containers:
      - name: wgs-nginx-container
        image: 192.168.174.120/baseimages/nginx-web1:v1.0 
        imagePullPolicy: Always
        ports:
        - containerPort: 80
          protocol: TCP
          name: http
        - containerPort: 443
          protocol: TCP
          name: https
        env:
        - name: "nginx-version"
          value: "1.20.2"
        resources:
          limits:
            cpu: 2
            memory: 1Gi
          requests:
            cpu: 500m
            memory: 1Gi


    

---
kind: Service
apiVersion: v1
metadata:
  labels:
    app: wgs-nginx-service-label
  name: wgs-nginx-service
  namespace: wgs
spec:
  type: NodePort
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: 80
    nodePort: 40002
  - name: https
    port: 443
    protocol: TCP
    targetPort: 443
    nodePort: 40443
  selector:
    app: wgs-nginx-selector

四 创建nginx pod

root@k8s-master-01:/data/k8s/yaml# kubectl apply -f nginx/nginx.yaml 
deployment.apps/wgs-nginx-deployment created
service/wgs-nginx-service created

五 查看nginx pod

root@k8s-master-01:/data/k8s/yaml# kubectl get pods -n wgs -o wide
NAME                                   READY   STATUS    RESTARTS   AGE     IP              NODE              NOMINATED NODE   READINESS GATES
wgs-nginx-deployment-9bcc5758d-49xs7   1/1     Running   0          2m38s   10.200.89.140   192.168.174.108   <none>           <none>

六 查看创建的nginx Service

root@k8s-master-01:/data/k8s/yaml# kubectl get svc -n wgs
NAME                TYPE       CLUSTER-IP      EXTERNAL-IP   PORT(S)                      AGE
wgs-nginx-service   NodePort   10.100.206.30   <none>        80:40002/TCP,443:40443/TCP   90s

七 查看暴露的端口

root@k8s-master-01:~# lsof -i :40002
COMMAND    PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
kube-prox 1006 root   13u  IPv4 847825      0t0  TCP *:40002 (LISTEN)

八 访问nginx

root@k8s-master-01:~# curl http://192.168.174.106:40002
hello nginx

root@k8s-master-01:~# curl http://192.168.174.106:40002/webapp/index.html
test webapp