Kubernetes之Service发布类型-ClusterIP 项目实战

Kubernetes之Service发布类型-ClusterIP 项目实战

文章目录

​​创建命名空间 kubectl create namespace wordpress​​​​创建配置文件 wordpress-db.yaml文件 [数据库]​​​​启动 kubectl apply -f wordpress-db.yaml​​​​创建wordpress配置文件 wordpress.yaml​​

创建命名空间 kubectl create namespace wordpress

[root@manager-node wordpress]# kubectl create namespace wordpressnamespace/wordpress created[root@manager-node wordpress]#

创建配置文件 wordpress-db.yaml文件 [数据库]

apiVersion: apps/v1beta1kind: Deploymentmetadata: name: mysql-deploy namespace: wordpress labels: app: mysqlspec: template: metadata: labels: app: mysql spec: containers: - name: mysql image: mysql:5.6 imagePullPolicy: IfNotPresent ports: - containerPort: 3306 name: dbport env: - name: MYSQL_ROOT_PASSWORD value: rootPassW0rd - name: MYSQL_DATABASE value: wordpress - name: MYSQL_USER value: wordpress - name: MYSQL_PASSWORD value: wordpress volumeMounts: - name: db mountPath: /var/lib/mysql volumes: - name: db hostPath: path: /var/lib/mysql---apiVersion: v1kind: Servicemetadata: name: mysql namespace: wordpressspec: selector: app: mysql ports: - name: mysqlport protocol: TCP port: 3306 targetPort:

启动 kubectl apply -f wordpress-db.yaml

[root@manager-node wordpress]# ls -latotal 4drwxr-xr-x. 2 root root 31 Jan 13 13:45 .drwxr-xr-x. 3 root root 23 Jan 13 13:44 ..-rw-r--r--. 1 root root 973 Jan 13 13:45 wordpress-db.yaml[root@manager-node wordpress]# pwd/root/demo/clusterip-demo/wordpress[root@manager-node wordpress]# kubectl apply -f wordpress-db.yaml deployment.apps/mysql-deploy createdservice/mysql created[root@manager-node wordpress]# [root@manager-node wordpress]# kubectl get pods -n wordpress -o wideNAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATESmysql-deploy-78cd6964bd-8mqpg 1/1 Running 0 3m28s 192.168.101.55 worker01-node [root@manager-node wordpress]#

启动的时候 可能会稍微慢点，需要一点时间去创建pod ** 查看进度 kubectl describe pod mysql-deploy-78cd6964bd-8mqpg -n wordpress**

[root@manager-node wordpress]# kubectl describe pod mysql-deploy-78cd6964bd-8mqpg -n wordpressName: mysql-deploy-78cd6964bd-8mqpgNamespace: wordpressPriority: 0PriorityClassName: Node: worker01-node/10.0.2.15Start Time: Mon, 13 Jan 2020 14:08:29 +0000Labels: app=mysql pod-template-hash=78cd6964bdAnnotations: cni.projectcalico.org/podIP: 192.168.101.55/32Status: RunningIP: 192.168.101.55Controlled By: ReplicaSet/mysql-deploy-78cd6964bdContainers: mysql: Container ID: docker://f23577ebc0603015c8dc101ba156ca373ead0d112cbbe5235f09b0e975dfa03b Image: mysql:5.6 Image ID: docker-pullable://mysql@sha256:82a505551c0243ca04df445f1287b2c4da3b23463b1a9c0bc2b2476760179950 Port: 3306/TCP Host Port: 0/TCP State: Running Started: Mon, 13 Jan 2020 14:11:04 +0000 Ready: True Restart Count: 0 Environment: MYSQL_ROOT_PASSWORD: rootPassW0rd MYSQL_DATABASE: wordpress MYSQL_USER: wordpress MYSQL_PASSWORD: wordpress Mounts: /var/lib/mysql from db (rw) /var/run/secrets/kubernetes.io/serviceaccount from default-token-v764r (ro)Conditions: Type Status Initialized True Ready True ContainersReady True PodScheduled True Volumes: db: Type: HostPath (bare host directory volume) Path: /var/lib/mysql HostPathType: default-token-v764r: Type: Secret (a volume populated by a Secret) SecretName: default-token-v764r Optional: falseQoS Class: BestEffortNode-Selectors: Tolerations: node.kubernetes.io/not-ready:NoExecute for 300s node.kubernetes.io/unreachable:NoExecute for 300sEvents: Type Reason Age From Message ---- ------ ---- ---- ------- Normal Scheduled 4m59s default-scheduler Successfully assigned wordpress/mysql-deploy-78cd6964bd-8mqpg to worker01-node Normal Pulling 4m58s kubelet, worker01-node Pulling image "mysql:5.6" Normal Pulled 2m25s kubelet, worker01-node Successfully pulled image "mysql:5.6" Normal Created 2m25s kubelet, worker01-node Created container mysql Normal Started 2m24s kubelet, worker01-node Started container mysql[root@manager-node wordpress]#

创建wordpress配置文件 wordpress.yaml

apiVersion: apps/v1beta1kind: Deploymentmetadata: name: wordpress-deploy namespace: wordpress labels: app: wordpressspec: template: metadata: labels: app: wordpress spec: containers: - name: wordpress image: wordpress imagePullPolicy: IfNotPresent ports: - containerPort: 80 name: wdport env: - name: WORDPRESS_DB_HOST value: 192.168.1.133:3306 - name: WORDPRESS_DB_USER value: wordpress - name: WORDPRESS_DB_PASSWORD value: wordpress---apiVersion: v1kind: Servicemetadata: name: wordpress namespace: wordpressspec: type: NodePort selector: app: wordpress ports: - name: wordpressport protocol: TCP port: 80 targetPort:

[root@manager-node wordpress]# kubectl apply -f wordpress.yaml deployment.apps/wordpress-deploy createdservice/wordpress created[root@manager-node wordpress]#

[root@manager-node wordpress]# kubectl get pods -n wordpress -o wide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATESmysql-deploy-78cd6964bd-8mqpg 1/1 Running 0 37m 192.168.101.55 worker01-node wordpress-deploy-6867948b7b-vk9n7 1/1 Running 0 7m40s 192.168.101.56 worker01-node [root@manager-node wordpress]#

这个有点耗时，这里注意下

[root@manager-node wordpress]# kubectl get svc -n wordpress -o wideNAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTORmysql ClusterIP 10.109.42.210 3306/TCP 31m app=mysqlwordpress NodePort 10.97.184.238 80:31629/TCP 2m app=wordpress[root@manager-node wordpress]#

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