9.20-使用k8s部署wordpress项目

部署wordpress项目

部署mariadb

  # 启动docker进程systemctl start docker​# 拉取三个镜像​docker pull nginx:alpinedocker pull wordpress:latestdocker pull mariadb:latest​# 保存三个镜像​cddocker save -o wordpress.tar wordpress:latestdocker save -o mariadb.tar mariadb:latest​# 上传到其他的起点主机​cdscp wordpress.tar root@192.168.2.77:~scp mariadb.tar root@192.168.2.88:~​scp wordpress.tar root@192.168.2.77:~scp mariadb.tar root@192.168.2.88:~​# 起到k8s-node01和k8s-node02​cdctr -n k8s.io images import wordpress.tar --platform=linux/amd64ctr -n k8s.io images import mariadb.tar --platform=linux/amd64​​​# 创建目录​mkdir wp​cd wp​ls​[root@k8s-master wp]#vim mariadb-cm.yaml​apiVersion: v1kind: ConfigMapmetadata:name: mariadb-cmlabels:cm: mariadb-cmdata:​DATABASE: dbUSER: wpPASSWORD: "123"ROOT_PASSWORD: "123"​​vim mariadb-deployment.yamlapiVersion: apps/v1kind: Deploymentmetadata:name: mariadb-deploymentlabels:app: mariadbspec:replicas: 1selector:matchLabels:app: mariadbtemplate:metadata:labels:app: mariadbspec:containers:-       name: mariadbimage: docker.io/library/mariadb:latestimagePullPolicy: Neverports:-       name: mariadbportcontainerPort: 3306envFrom:-      prefix: "MARIADB_"configMapRef:name: mariadb-cm​[root@k8s-master wp]# kubectl create -f mariadb-cm.yamlconfigmap/mariadb-cm created​[root@k8s-master wp]# kubectl get cmNAME               DATA   AGEkube-root-ca.crt   1      8dmariadb-cm         4      14s[root@k8s-master wp]# kubectl create -f mariadb-deployment.yamldeployment.apps/mariadb-deployment created​[root@k8s-master wp]# kubectl get poNAME                                  READY   mariadb-deployment-55bc54f6f5-7vl5l   1/1     Running            0          2s​[root@k8s-master wp]# kubectl get po -o wideNAME                                  READY   mariadb-deployment-55bc54f6f5-7vl5l   1/1     Running            0          4m44s   172.16.85.227   k8s-node01   <none>           <none>​​[root@k8s-master wp]# yum -y install mariadb​[root@k8s-master wp]# mysql -h172.16.85.227 -uwp -p123Welcome to the MariaDB monitor.  Commands end with ; or \g.Your MariaDB connection id is 3Server version: 11.5.2-MariaDB-ubu2404 mariadb.org binary distribution​Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.​Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.​MariaDB [(none)]> show databases;+--------------------+| Database           |+--------------------+| db                 || information_schema |+--------------------+2 rows in set (0.00 sec)​MariaDB [(none)]> exit;Bye​​[root@k8s-master wp]# docker psCONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES[root@k8s-master wp]# docker run -itd mariadb:latest a67736ad26f3cab4251238196c322df6a7ca1b862f44d7eb0249a7e549a62e4f[root@k8s-master wp]# docker ps --allCONTAINER ID   IMAGE            COMMAND                   CREATED         STATUS                     PORTS     NAMESa67736ad26f3   mariadb:latest   "docker-entrypoint.s…"   9 seconds ago   Exited (1) 7 seconds ago             eager_hopper​[root@k8s-master wp]# docker run -tid -e MARIADB_ROOT_PASSWORD=123 mariadb:latestf635b88a030a4cc2422abbff12990c7091057c0e19ae16280687199cfed08291[root@k8s-master wp]# docker ps --allCONTAINER ID   IMAGE            COMMAND                   CREATED              STATUS                          PORTS      NAMESf635b88a030a   mariadb:latest   "docker-entrypoint.s…"   19 seconds ago       Up 18 seconds                   3306/tcp   funny_ramana67736ad26f3   mariadb:latest   "docker-entrypoint.s…"   About a minute ago   Exited (1) About a minute ago              eager_hopper​​[root@k8s-master wp]# mysql -h172.16.85.227 -uroot -p123Welcome to the MariaDB monitor.  Commands end with ; or \g.Your MariaDB connection id is 4Server version: 11.5.2-MariaDB-ubu2404 mariadb.org binary distribution​Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.​Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.​MariaDB [(none)]> show databases;+--------------------+| Database           |+--------------------+| db                 || information_schema || mysql              || performance_schema || sys                |+--------------------+5 rows in set (0.00 sec)​MariaDB [(none)]> exit;Bye​​

部署wordpress

  [root@k8s-master wp]# vim wordpress-cm.yamlapiVersion: v1kind: ConfigMapmetadata:name: wordpress-cmlabels:cm: wordpress-cmdata:NAME: "db"USER: "wp"PASSWORD: "123"HOST: "172.16.85.227"​[root@k8s-master wp]# kubectl create -f wordpress-cm.yaml configmap/wordpress-cm created[root@k8s-master wp]# kubectl get cmNAME               DATA   AGEkube-root-ca.crt   1      9dmariadb-cm         4      29mwordpress-cm       4      110s​[root@k8s-master wp]# vim wordpress-deployment.yamlapiVersion: apps/v1kind: Deploymentmetadata:name: wordpresslabels:app: wordpressspec:replicas: 3selector:matchLabels:app: wordpresstemplate:metadata:labels:app: wordpressspec:containers:-       name: wordpressimage: docker.io/library/wordpress:latestimagePullPolicy: Neverports:-        name: wpportcontainerPort: 80envFrom:-        prefix: "WORDPRESS_DB_"configMapRef:name: wordpress-cm​[root@k8s-master wp]# kubectl create -f wordpress-deployment.yaml deployment.apps/wordpress created​[root@k8s-master wp]# kubectl get poNAME                                  READY   STATUS             RESTARTS      AGEcluster-test0-58689d5d5d-7c49r        1/1     Running            1 (32m ago)   92mhaha-96567ff6f-r2mh5                  0/1     ImagePullBackOff   0             100mmariadb-deployment-55bc54f6f5-7vl5l   1/1     Running            0             42mwordpress-7695bd58f4-9qddf            1/1     Running            0             92swordpress-7695bd58f4-skrdj            1/1     Running            0             92swordpress-7695bd58f4-wt4nk            1/1     Running            0             92s​[root@k8s-master wp]# kubectl get po -o wideNAME                                  READY   STATUS             RESTARTS      AGE    IP              NODE         NOMINATED NODE   READINESS GATEScluster-test0-58689d5d5d-7c49r        1/1     Running            1 (32m ago)   92m    172.16.58.249   k8s-node02   <none>           <none>haha-96567ff6f-r2mh5                  0/1     ImagePullBackOff   0             100m   172.16.85.223   k8s-node01   <none>           <none>mariadb-deployment-55bc54f6f5-7vl5l   1/1     Running            0             42m    172.16.85.227   k8s-node01   <none>           <none>wordpress-7695bd58f4-9qddf            1/1     Running            0             105s   172.16.58.250   k8s-node02   <none>           <none>wordpress-7695bd58f4-skrdj            1/1     Running            0             105s   172.16.85.228   k8s-node01   <none>           <none>wordpress-7695bd58f4-wt4nk            1/1     Running            0             105s   172.16.85.229   k8s-node01   <none>           <none>[root@k8s-master wp]# curl 172.16.58.250[root@k8s-master wp]# kubectl  port-forward deployments/wordpress 8080:80 [root@k8s-master wp]# nohup kubectl port-forward deployments/wordpress 8080:80 &[root@k8s-master wp]# netstat -lnput|grep 8080tcp        0      0 127.0.0.1:8080          0.0.0.0:*               LISTEN      84356/kubectl       tcp6       0      0 ::1:8080                :::*                    LISTEN      84356/kubectl       ​

部署nginx容器

  [root@k8s-master wp]# vim nginx.conf​server {listen 80;default_type text/html;location / { proxy_http_version 1.1;proxy_set_header Host $host;proxy_pass http://127.0.0.1:8080;}​}​[root@k8s-master wp]# docker run -itd -p80:80  -v ./nginx.conf:/etc/nginx/conf.d/default.conf nginx:alpine 579352ef549590d1a9d8bffec9fada0d9abffbcbdfa8db2ee211c667eb9729bb[root@k8s-master wp]# docker psCONTAINER ID   IMAGE          COMMAND                   CREATED         STATUS         PORTS                               NAMES579352ef5495   nginx:alpine   "/docker-entrypoint.…"   5 seconds ago   Up 5 seconds   0.0.0.0:80->80/tcp, :::80->80/tcp   vibrant_carson​