二进制部署K8s集群第18节K8s服务暴露之NodePort型Service

二进制部署K8s集群第18节K8s服务暴露之NodePort型Service

1、创建NodePort型Service资源清单

[root@hdss7-21 ~]# kubectl create deployment nginx-dp --image=harbor.od.com/public/nginx:v1.7.9 -n kube-public --replicas=2 [root@hdss7-21 ~]# kubectl expose deployment nginx-dp --port=80 -n kube-public service/nginx-dp exposed # 默认创建clusterIP，只允许内网访问集群IP [root@hdss7-21 ~]# kubectl get all -n kube-public NAME READY STATUS RESTARTS AGE pod/nginx-dp-7f74c75ff9-8vzx8 1/1 Running 0 pod/nginx-dp-7f74c75ff9-9cwnt 1/1 Running 0 NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/nginx-dp ClusterIP 192.168.128.131 80/TCP 41s NAME READY UP-TO-DATE AVAILABLE AGE deployment.apps/nginx-dp 2/2 2 2 68s NAME DESIRED CURRENT READY AGE replicaset.apps/nginx-dp-7f74c75ff9 2 2 2 [root@hdss7-21 ~]# cat > svc.yml <<'eof' # 创建NodePort型service apiVersion: v1 kind: Service metadata: labels: k8s-app: nginx-dp-svc name: nginx-dp-svc namespace: kube-public spec: type: NodePort ports: - port: 80 nodePort: 3010 protocol: TCP selector: app: nginx-dp sessionAffinity: None eof [root@hdss7-21 ~]# kubectl create -f svc.yml service/nginx-dp created [root@hdss7-21 ~]# kubectl get all -n kube-public --show-labels -o wide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES LABELS pod/nginx-dp-7f74c75ff9-9gx2k 1/1 Running 0 172.7.22.3 hdss7-22.host.com app=nginx-dp,pod-template-hash=7f74c75ff9 pod/nginx-dp-7f74c75ff9-r9kgx 1/1 Running 0 172.7.21.4 hdss7-21.host.com app=nginx-dp,pod-template-hash=7f74c75ff9 NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR LABELS service/nginx-dp ClusterIP 192.168.96.174 80/TCP 6m5s app=nginx-dp app=nginx-dp service/nginx-dp-svc NodePort 192.168.20.171 80:3010/TCP 85s app=nginx-dp k8s-app=nginx-dp-svc NAME READY UP-TO-DATE AVAILABLE AGE CONTAINERS IMAGES SELECTOR LABELS deployment.apps/nginx-dp 2/2 2 2 6m12s nginx harbor.od.com/public/nginx:v1.7.9 app=nginx-dp app=nginx-dp NAME DESIRED CURRENT READY AGE CONTAINERS IMAGES SELECTOR LABELS replicaset.apps/nginx-dp-7f74c75ff9 2 2 2 nginx harbor.od.com/public/nginx:v1.7.9 app=nginx-dp,pod-template-hash=7f74c75ff9 app=nginx-dp,pod-template-hash=7f74c75ff9

2、通过edit将ClusterIP改变成NodePort

kubectl edit svc nginx-dp -n kube-public spec: clusterIP: 192.168.96.174 ports: - port: 80 protocol: TCP targetPort: 80 selector: app: nginx-dp sessionAffinity: None type: NodePort # 清加nodeport [root@hdss7-21 ~]# kubectl get all -n kube-public NAME READY STATUS RESTARTS AGE pod/nginx-dp-7f74c75ff9-9gx2k 1/1 Running 0 pod/nginx-dp-7f74c75ff9-r9kgx 1/1 Running 0 NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/nginx-dp NodePort 192.168.96.174 80:27051/TCP 15m service/nginx-dp-svc NodePort 192.168.20.171 80:3010/TCP 11m NAME READY UP-TO-DATE AVAILABLE AGE deployment.apps/nginx-dp 2/2 2 2 15m NAME DESIRED CURRENT READY AGE replicaset.apps/nginx-dp-7f74c75ff9 2 2 2

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