docker java项目容器化改造

前后端分离项目

前端 https://gitee.com/yuco/eladmin-web.git

后端 https://gitee.com/yuco/eladmin.git

• 要素：vue npm springboot mysql redis

java后端容器化

思路：

了解在物理机虚拟机的部署流程，然后编写dockerfile进行容器化部署。

java项目，使用mvn进行构建，最终生成jar包，拷贝到jdk环境中启动即可，所以需要多阶段构建。

先启动容器，然后手动构建验证，最后在编写dockerfile进行构建。

# 1.进入maven环境，下载代码，构建得到jar包，pom.xml已经配置好了阿里云的mvn源
docker run --rm -ti aerialist7/maven-git sh #创建一个mvn 、jdk环境

git clone https://gitee.com/yuco/eladmin.git
cd /eladmin

mkdir -p /root/.m2

echo '<settings><mirrors><mirror><id>nexus-tencentyun</id><url>https://maven.aliyun.com/repository/public	</url><mirrorOf>central</mirrorOf></mirror></mirrors></settings>' > /root/.m2/settings.xml #配置腾讯mvn源地址

mvn clean package

启动java程序

/eladmin # ls
LICENSE            eladmin-common     eladmin-logging    eladmin-tools      sql
README.md          eladmin-generator  eladmin-system     pom.xml
/eladmin # cd eladmin-system/target/
/eladmin/eladmin-system/target # ls
classes                          eladmin-system-2.6.jar.original  generated-test-sources           maven-status
eladmin-system-2.6.jar           generated-sources                maven-archiver                   test-classes
/eladmin/eladmin-system/target # java -jar eladmin-system-2.6.jar
       _                 _           _
      | |               | |         (_)
   ___| |______ __ _  __| |_ __ ___  _ _ __
  / _ | |______/ _` |/ _` | '_ ` _ \| | '_ \
 |  __| |     | (_| | (_| | | | | | | | | | |
  \___|_|      \__,_|\__,_|_| |_| |_|_|_| |_|

 :: Spring Boot ::       (v2.6.4)
elAdmin- 2024-05-07 06:31:58 [main] INFO  me.zhengjie.AppRun - Starting AppRun v2.6 using Java 1.8.0_191 on 1e2bbff29645 with PI

编写dockerfile

根据手动编译，咱们已经知道了流程，

1、需要mvn java git环境

2、修改mvn源地址，编译源码

3、生成jar包，启动java -jar eladmin-system-2.6.jar

#准备源码
cd /opt
git clone https://gitee.com/yuco/eladmin.git

FROM aerialist7/maven-git as builder

WORKDIR /opt/eladmin
COPY  . .
RUN mvn clean package

FROM java:8u111
WORKDIR /opt/eladmin
COPY --from=builder /opt/eladmin/eladmin-system/target/eladmin-system-2.6.jar .
CMD [ "sh", "-c", "java -Dspring.profiles.active=prod -jar eladmin-system-2.6.jar" ]

如上的java参数-Dspring.profiles.active=prod是指可以有多个config.yml配置文件，以在不同的环境下测试。
#构建镜像
docker build  -t eladmin:v1 .

准备数据库

[root@localhost mysql]# cat docker-compose.yml 
version: '3'
services:
    mysql:
        command: '--character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci'
        image: 'mysql:5.7'
        environment:
            - MYSQL_ROOT_PASSWORD=H123.com
            - MYSQL_DATABASE=eladmin
        volumes:
            - '/opt/mysql2:/var/lib/mysql'
        container_name: mysql
        ports:
            - '3306:3306'

导入eladmin数据

[root@localhost eladmin]# cd sql
[root@localhost sql]# ls
eladmin.sql  tool_picture.sql  脚本如何选择.md
[root@localhost sql]# pwd
/opt/eladmin/sql
[root@localhost sql]# docker ps
CONTAINER ID   IMAGE       COMMAND                   CREATED              STATUS              PORTS                                                  NAMES
41edc310433c   mysql:5.7   "docker-entrypoint.s…"   About a minute ago   Up About a minute   0.0.0.0:3306->3306/tcp, :::3306->3306/tcp, 33060/tcp   mysql
[root@localhost sql]# docker cp /opt/eladmin/sql/eladmin.sql mysql:/tmp/
Successfully copied 51.2kB to mysql:/tmp/
[root@localhost sql]# 
[root@localhost sql]# docker exec -it mysql /bin/bash   #进入数据库
bash-4.2# mysql -uroot -pH123.com eladmin < /tmp/eladmin.sql  #导入数据
mysql: [Warning] Using a password on the command line interface can be insecure.
bash-4.2# mysql -uroot -pH123.com                            
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.44 MySQL Community Server (GPL)

Copyright (c) 2000, 2023, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| eladmin            |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
5 rows in set (0.00 sec)

mysql> USE eladmin;  #选择数据库
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> SHOW TABLES;   #查看数据库中的表
+--------------------+
| Tables_in_eladmin  |
+--------------------+
| code_column_config |
| code_gen_config    |
| mnt_app            |
| mnt_database       |
| mnt_deploy         |
| mnt_deploy_history |
| mnt_deploy_server  |
| mnt_server         |
| sys_dept           |
| sys_dict           |
| sys_dict_detail    |
| sys_job            |
| sys_log            |

数据库常用命令

要查看 MySQL 中 `test` 数据库的信息，你需要通过 MySQL 命令行工具或任何支持的图形界面工具连接到数据库。下面我会给你一个简单的步骤说明如何使用命令行查看数据库信息。

**步骤 1: 连接到 MySQL 数据库**
首先，你需要使用 MySQL 命令行客户端连接到 MySQL 服务器。假设你已经有了适当的权限和认证信息，你可以使用以下命令：

```bash
mysql -u username -p
```
这里 `username` 是你的 MySQL 用户名。输入命令后，系统会提示你输入密码。

**步骤 2: 选择数据库**
连接成功后，你需要选择 `test` 数据库：

```sql
USE test;
```

**步骤 3: 查看数据库中的表**
要查看 `test` 数据库中所有的表，你可以使用以下 SQL 命令：

```sql
SHOW TABLES;
```

**步骤 4: 查看表的结构**
选择一个特定的表，比如 `example_table`，并查看其结构：

```sql
DESCRIBE example_table;
```

**步骤 5: 查询表中的数据**
查看表中的数据，可以使用 `SELECT` 语句。例如，查看 `example_table` 表中的所有记录：

```sql
SELECT * FROM example_table;
```

这些步骤将帮助你检查 `test` 数据库中的内容。如果你需要执行特定的查询或有关数据的更复杂的分析，请确保 SQL 语句符合你的需求。

创建redis

[root@localhost redis]# cat docker-compose.yaml 
version: '3'
services:
    redis:
        command: redis-server
        image: 'redis:3.2'
        restart: always
        container_name: redis
        ports:
            - '6379:6379'

启动后端

[root@localhost houduan]# cat docker-compose.yaml 
version: '3'
services:
    eladmin:
        image: 'eladmin:v1'
        environment:
            - REDIS_HOST=192.168.199.142
            - DB_PWD=H123.com
            - DB_USER=root
            - DB_HOST=192.168.199.142
        ports:
            - '8000:8000'
        container_name: eladmin-api

前端Vue构建

思路：

• 前端构建需要node环境，构建结果通常为dist静态文件，项目运行仅需要web服务器即可。因此采用多阶构建
• 确认基础镜像：docker search vue-node
• 验证构建，最终采用codemantn/vue-node作为基础镜像

准备源码

git clone https://gitee.com/yuco/eladmin-web
cd   eladmin-web/ 

修改npm源

npm config set sass_binary_site https://npm.taobao.org/mirrors/node-sass/
npm config set registry https://registry.npm.taobao.com   #测试能不能用
npm install
npm run build:prod

生成dist静态文件，把文件内容放到nignx的/usr/share/nginx/html即可

编写dockerfile

FROM codemantn/vue-node AS builder

LABEL maintainer="yanfei"

# config npm
RUN npm config set sass_binary_site https://npm.taobao.org/mirrors/node-sass/ && \
    npm config set registry https://mirrors.huaweicloud.com/repository/npm/

WORKDIR /opt/eladmin-web
COPY  . .

# build
RUN ls -l && npm install && npm run build:prod


FROM nginx:alpine

WORKDIR /usr/share/nginx/html

COPY --from=builder /opt/eladmin-web/dist /usr/share/nginx/html/

EXPOSE 80

修改前端代码，后端AIP地址

浏览器——前端——后端

需要在前端代码后面成后端的API地址

[root@localhost eladmin-web]# cat .env.production 
ENV = 'production'

# 如果使用 Nginx 代理后端接口，那么此处需要改为 '/'，文件查看 Docker 部署篇，Nginx 配置
# 接口地址，注意协议，如果你没有配置 ssl，需要将 https 改为 http
VUE_APP_BASE_API  = 'http://192.168.199.142:8000'
# 如果接口是 http 形式， wss 需要改为 ws
VUE_APP_WS_API = 'ws://192.168.199.142:8000'
[root@localhost eladmin-web]# 

构建镜像

docker build . -t eladmin-web:v1 -f Dockerfile

启动前端

mkdir qianduan

[root@localhost qianduan]# cat docker-compose.yaml 
version: '3'
services:
    eladmin-web:
        image: 'eladmin-web:v1'
        ports:
            - '800:80'
        container_name: eladmin-web

[root@localhost qianduan]# docker-compose up -d
Recreating eladmin-web ... done
[root@localhost qianduan]# docker ps
CONTAINER ID   IMAGE            COMMAND                   CREATED             STATUS             PORTS                                                  NAMES
118cfc5bca90   eladmin-web:v1   "/docker-entrypoint.…"   4 seconds ago       Up 3 seconds       0.0.0.0:800->80/tcp, :::800->80/tcp                    eladmin-web
62eae48d373b   eladmin:v1       "sh -c 'java -Dsprin…"   55 minutes ago      Up 55 minutes      0.0.0.0:8000->8000/tcp, :::8000->8000/tcp              eladmin-api
4dc3fc361855   redis:3.2        "docker-entrypoint.s…"   About an hour ago   Up About an hour   0.0.0.0:6379->6379/tcp, :::6379->6379/tcp              redis
41edc310433c   mysql:5.7        "docker-entrypoint.s…"   About an hour ago   Up About an hour   0.0.0.0:3306->3306/tcp, :::3306->3306/tcp, 33060/tcp   mysql

查看数据库是否有用户

[root@localhost qianduan]# docker exec -it mysql /bin/bash
bash-4.2# mysql -uroot -p

mysql> use eladmin;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> show tables;
+--------------------+
| Tables_in_eladmin  |
+--------------------+
| code_column_config |
| code_gen_config    |
| mnt_app            |
| mnt_database       |
| mnt_deploy         |
| mnt_deploy_history |
| mnt_deploy_server  |
| mnt_server         |
| sys_dept           |
| sys_dict           |
| sys_dict_detail    |
| sys_job            |
| sys_log            |
| sys_menu           |
| sys_quartz_job     |
| sys_quartz_log     |
| sys_role           |
| sys_roles_depts    |
| sys_roles_menus    |
| sys_user           |
| sys_users_jobs     |
| sys_users_roles    |
| tool_alipay_config |
| tool_email_config  |
| tool_local_storage |
| tool_qiniu_config  |
| tool_qiniu_content |
+--------------------+
27 rows in set (0.00 sec)

mysql> select * from sys_user;
+---------+---------+----------+-----------+--------+-------------+------------------+------------------------------+----------------------------------------------------------------------------------+--------------------------------------------------------------+----------+---------+-----------+-----------+---------------------+---------------------+---------------------+
| user_id | dept_id | username | nick_name | gender | phone       | email            | avatar_name                  | avatar_path                                                                      | password                                                     | is_admin | enabled | create_by | update_by | pwd_reset_time      | create_time         | update_time         |
+---------+---------+----------+-----------+--------+-------------+------------------+------------------------------+----------------------------------------------------------------------------------+--------------------------------------------------------------+----------+---------+-----------+-----------+---------------------+---------------------+---------------------+
|       1 |       2 | admin    | ???       | ?      | 18888888888 | [email protected] | avatar-20200806032259161.png | /Users/jie/Documents/work/me/admin/eladmin/~/avatar/avatar-20200806032259161.png | $2a$10$Egp1/gvFlt7zhlXVfEFw4OfWQCGPw0ClmMcc6FjTnvXNRVf9zdMRa |         |       1 | NULL      | admin     | 2020-05-03 16:38:31 | 2018-08-23 09:11:56 | 2020-09-05 10:43:31 |
|       2 |       2 | test     | ??        | ?      | 19999999999 | [email protected]       | NULL                         | NULL                                                                             | $2a$10$4XcyudOYTSz6fue6KFNMHeUQnCX5jbBQypLEnGk1PmekXt5c95JcK |          |       1 | admin     | admin     | NULL                | 2020-05-05 11:15:49 | 2020-09-05 10:43:38 |
|       3 |       7 | yanfei   | yanfei    | ?      | 13838384388 | [email protected]       | NULL                         | NULL                                                                             | $2a$10$WGBNrFiJE3APZ3nSiOaBg.Z/Gq6BsXmg2I0kIB9ozwlLe30XiH62u |          |       1 | admin     | admin     | NULL                | 2024-05-07 17:09:56 | 2024-05-07 17:09:56 |
+---------+---------+----------+-----------+--------+-------------+------------------+------------------------------+----------------------------------------------------------------------------------+--------------------------------------------------------------+----------+---------+-----------+-----------+---------------------+---------------------+---------------------+
3 rows in set (0.00 sec)

mysql> 

合并docker-compse文件

version: '3'
services:
  mysql:
    command: '--character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci'
    image: 'mysql:5.7'
    environment:
      - MYSQL_ROOT_PASSWORD=H123.com
      - MYSQL_DATABASE=eladmin
    volumes:
      - '/opt/mysql2:/var/lib/mysql'
    container_name: mysql
    ports:
      - '3306:3306'

  redis:
    command: redis-server
    image: 'redis:3.2'
    restart: always
    container_name: redis
    ports:
      - '6379:6379'
      
  eladmin-web:
    image: 'eladmin-web:v1'
    ports:
      - '800:80'
    container_name: eladmin-web

  eladmin:
    image: 'eladmin:v1'
    environment:
      - REDIS_HOST=redis
      - DB_PWD=H123.com
      - DB_USER=root
      - DB_HOST=mysql
    ports:
      - '8000:8000'
    container_name: eladmin-api

部署到k8s里面

把封装好的镜像推送到私有仓库里面，根据docker文件编写k8s yaml文件。

启动顺序：redis——mysql——eladmin——eladmin-web

所有资源放到eladmin名称空间下面。

kubectl create ns eladmin

k8s redis

apiVersion: v1
kind: Pod
metadata:
  name: redis
  namespace: eladmin
  labels:
    app: redis
spec:
  # hostNetwork: true
  containers:
  - name: redis
    image: 192.168.199.88/ae/redis:3.2
    ports:
    - containerPort: 6379

下载私有镜像报错

支持私有仓库，用户密码下载

#配置支持私有仓库http下载
mkdir -p /etc/containerd/certs.d/192.168.199.88
cat >/etc/containerd/certs.d/192.168.199.88/hosts.toml <<EOF
server = "http://192.168.199.88"
[host."http://192.168.199.88"]
  capabilities = ["pull", "resolve", "push"]
  skip_verify = true
EOF

#配置docker harbor用户密码
kubectl create secret docker-registry registry-192.168.199.88 \
  --docker-server=192.168.199.88 --docker-username=admin \
  --docker-password=k8sHarbor12345 [email protected] \
  --namespace=eladmin

[root@k8s-master eladmin]# cat redis_pod.yaml 
apiVersion: v1
kind: Pod
metadata:
  name: redis
  namespace: eladmin
  labels:
    app: redis
spec:
  imagePullSecrets:
  - name: registry-192.168.199.88
  # hostNetwork: true
  containers:
  - name: redis
    image: 192.168.199.88/ae/redis:3.2
    ports:
    - containerPort: 6379

优化yaml

[root@k8s-master eladmin]# 
cat >redis-all.yaml <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis
  namespace: eladmin
spec:
  replicas: 1  # 更新副本数量为3
  selector:
    matchLabels:
      app: redis
  template:
    metadata:
      labels:
        app: redis
    spec:
      imagePullSecrets:
      - name: registry-192.168.199.88
      containers:
      - image: 192.168.199.88/ae/redis:3.2
        name: container
---
apiVersion: v1
kind: Service
metadata:
  name: redis       # Service的名称 ，svc  ip，dns,自定义，做好按业务名称，通俗易懂
  namespace: eladmin    #和之前创建的后端放一个名称空间中
spec:
  selector:          # Label Selector，选择包含app=nginx标签的Pod，后面只要这个命名空间中带这个标签的server IP就会自动发现
    app: redis  #之前创建pod中的保持一致
  ports:
  - name: service
    targetPort: 6379   # Pod的端口
    port: 6379        # Service对外暴露的端口，也就是ClusterIP的port
    protocol: TCP    # 转发协议类型，支持TCP和UDP
  type: NodePort   # Service的类型
EOF

k8s mysql

创建mysql pvc

#创建mysql pvc
[root@k8s-master eladmin]# cat mysql-pvc.yaml 
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: eladmin-mysql
  namespace: eladmin
spec:
  accessModes:  ["ReadWriteMany"]
  resources:
    requests:
      storage: 1Gi
  storageClassName:  managed-nfs-storage

[root@k8s-master eladmin]# kubectl -n eladmin get pvc
NAME            STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS          AGE
eladmin-mysql   Bound    pvc-e35d1f55-6d75-479e-a184-d862eea58041   1Gi        RWX            managed-nfs-storage   6s

创建 mysql pod

#创建pod mysql
[root@k8s-master eladmin]# cat mysql-pod.yaml 
apiVersion: v1
kind: Pod
metadata:
  name: mysql
  namespace: eladmin
  labels:
    app: mysql
spec:
  imagePullSecrets:
  - name: registry-192.168.199.88
  containers:
  - name: mysql
    image: 192.168.199.88/ae/mysql:5.7
    env:
    - name: MYSQL_DATABASE   #  指定数据库地址
      value: "eladmin"
    - name: MYSQL_ROOT_PASSWORD
      value: "H123.com"
    ports:
    - containerPort: 3306
    args:
    - --character-set-server=utf8mb4
    - --collation-server=utf8mb4_unicode_ci
    volumeMounts:
    - name: mysql-data
      mountPath: /var/lib/mysql
  volumes: 
  - name: mysql-data
    persistentVolumeClaim:
      claimName: eladmin-mysql

优化mysql yaml

[root@k8s-master eladmin]# cat mysql-all.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql
  namespace: eladmin
spec:
  replicas: 1  # 更新副本数量为3
  selector:
    matchLabels:
      app: mysql
  template:
    metadata:
      labels:
        app: mysql
    spec:
      imagePullSecrets:
      - name: registry-192.168.199.88
      containers:
      - name: mysql
        image: 192.168.199.88/ae/mysql:5.7
        env:
        - name: MYSQL_DATABASE   #  指定数据库地址
          value: "eladmin"
        - name: MYSQL_ROOT_PASSWORD
          value: "H123.com"
        args:
        - --character-set-server=utf8mb4
        - --collation-server=utf8mb4_unicode_ci
        volumeMounts:
        - name: mysql-data
          mountPath: /var/lib/mysql
      volumes: 
      - name: mysql-data
        persistentVolumeClaim:
          claimName: eladmin-mysql

---
apiVersion: v1
kind: Service
metadata:
  name: mysql       # Service的名称 ，svc  ip，dns,自定义，做好按业务名称，通俗易懂
  namespace: eladmin    #和之前创建的后端放一个名称空间中
spec:
  selector:          # Label Selector，选择包含app=nginx标签的Pod，后面只要这个命名空间中带这个标签的server IP就会自动发现
    app: mysql  #之前创建pod中的保持一致
  ports:
  - name: service
    targetPort:    # Pod的端口
    port: 3306      # Service对外暴露的端口，也就是ClusterIP的port
    protocol: TCP    # 转发协议类型，支持TCP和UDP
  type: NodePort   # Service的类型

mysql导入eladmin数据

[root@localhost sql]# pwd
/opt/eladmin/sql
[root@localhost sql]# scp eladmin.sql [email protected]:/tmp
The authenticity of host '192.168.199.171 (192.168.199.171)' can't be established.
ECDSA key fingerprint is SHA256:M1KLKNxI8H9Uy/z7Pq1akfBFRZymUgPegab3vOa+dQ0.
ECDSA key fingerprint is MD5:5d:f8:62:ad:a1:bc:ff:27:fd:8a:0e:bd:dd:60:46:94.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.199.171' (ECDSA) to the list of known hosts.
[email protected]'s password: 
eladmin.sql                                     100%   48KB   3.6MB/s   00:00    
[root@localhost sql]# 


[root@k8s-master eladmin]# kubectl -n eladmin get pod
NAME                     READY   STATUS    RESTARTS   AGE
mysql-84fdfffcd7-cpbsg   1/1     Running   0          16m
redis-686f98d84-ddmg9    1/1     Running   0          66m

[root@k8s-master eladmin]# kubectl -n eladmin  cp /tmp/eladmin.sql mysql-84fdfffcd7-cpbsg:/tmp/
[root@k8s-master eladmin]# kubectl -n eladmin exec -it mysql-84fdfffcd7-cpbsg /bin/bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
bash-4.2# cd /tmp/
bash-4.2# ls
eladmin.sql
bash-4.2# 
bash-4.2# mysql -uroot -p eladmin < /tmp/eladmin.sql 
Enter password: 
bash-4.2# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.7.44 MySQL Community Server (GPL)

Copyright (c) 2000, 2023, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
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mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| eladmin            |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
5 rows in set (0.01 sec)

mysql> use eladmin;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> show tables;
+--------------------+
| Tables_in_eladmin  |
+--------------------+
| code_column_config |
| code_gen_config    |
| mnt_app            |
| mnt_database       |
| mnt_deploy         |
| mnt_deploy_history |
| mnt_deploy_server  |
| mnt_server         |
| sys_dept           |
| sys_dict           |
| sys_dict_detail    |
| sys_job            |
| sys_log            |
| sys_menu           |
| sys_quartz_job     |
| sys_quartz_log     |
| sys_role           |
| sys_roles_depts    |
| sys_roles_menus    |
| sys_user           |
| sys_users_jobs     |
| sys_users_roles    |
| tool_alipay_config |
| tool_email_config  |
| tool_local_storage |
| tool_qiniu_config  |
| tool_qiniu_content |
+--------------------+
27 rows in set (0.01 sec)

mysql> 

k8s eladminapi

apiVersion: v1
kind: Pod
metadata:
  name: eladmin-api
  namespace: eladmin
  labels:
    app: eladmin-api
spec:
  imagePullSecrets:
  - name: registry-192.168.199.88
  containers:
  - name: eladmin-api
    image: 192.168.199.88/ae/eladmin:v1
    env:
    - name: DB_HOST   #  指定数据库地址，更新为svc
      value: "mysql.eladmin.svc.cluster.local"
    - name: DB_USER   #  指定数据库连接使用的用户
      value: "root"
    - name: DB_PWD
      value: "H123.com"
    - name: REDIS_HOST
      value: "redis"
    - name: REDIS_PORT
      value: "6379"
    ports:
    - containerPort: 8000 # 同EXPOSE，声明业务端口号

优化eladminapi yaml

[root@k8s-master eladmin]# cat eladminapi-all.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  name: eladminapi
  namespace: eladmin
spec:
  replicas: 1  # 更新副本数量为3
  selector:
    matchLabels:
      app: eladminapi
  template:
    metadata:
      labels:
        app: eladminapi
    spec:
    spec:
      imagePullSecrets:
      - name: registry-192.168.199.88
      containers:
      - name: eladmin-api
        image: 192.168.199.88/ae/eladmin:v1
        env:
        - name: DB_HOST   #  指定数据库地址，更新为svc
          value: "mysql.eladmin.svc.cluster.local"
        - name: DB_USER   #  指定数据库连接使用的用户
          value: "root"
        - name: DB_PWD
          value: "H123.com"
        - name: REDIS_HOST
          value: "redis"
        - name: REDIS_PORT
          value: "6379"
        ports:
        - containerPort: 8000 # 同EXPOSE，声明业务端口号
---
apiVersion: v1
kind: Service
metadata:
  name: eladminapi       # Service的名称 ，svc  ip，dns,自定义，做好按业务名称，通俗易懂
  namespace: eladmin    #和之前创建的后端放一个名称空间中
spec:
  selector:          # Label Selector，选择包含app=nginx标签的Pod，后面只要这个命名空间中带这个标签的server IP就会自动发现
    app: eladminapi  #之前创建pod中的保持一致
  ports:
  - name: service
    targetPort: 8000    # Pod的端口
    port: 8000     # Service对外暴露的端口，也就是ClusterIP的port
    nodePort: 30118
    protocol: TCP    # 转发协议类型，支持TCP和UDP
  type: NodePort   # Service的类型

编译VUE前端界面

详细流程请查看之前的操作。

[root@localhost eladmin-web]# cat .env.production 
ENV = 'production'

# 如果使用 Nginx 代理后端接口，那么此处需要改为 '/'，文件查看 Docker 部署篇，Nginx 配置
# 接口地址，注意协议，如果你没有配置 ssl，需要将 https 改为 http
VUE_APP_BASE_API  = 'http://192.168.199.171:30118/'
# 如果接口是 http 形式， wss 需要改为 ws
VUE_APP_WS_API = 'ws://192.168.199.171:30118/'

FROM codemantn/vue-node AS builder

LABEL maintainer="yanfei"

# config npm
RUN npm config set sass_binary_site https://npm.taobao.org/mirrors/node-sass/ && \
    npm config set registry https://mirrors.huaweicloud.com/repository/npm/

WORKDIR /root/eladmin-web
COPY  . .

# build
RUN ls -l && npm install && npm run build:prod


FROM nginx:alpine

WORKDIR /usr/share/nginx/html

COPY --from=builder /root/eladmin-web/dist /usr/share/nginx/html/

EXPOSE 80

docker build . -t 192.168.199.88/ae/eladmin-web:v2 -f Dockerfile

编写yaml

[root@k8s-master eladmin]# cat eladimnweb-all.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  name: eladminweb
  namespace: eladmin
spec:
  replicas: 1  # 更新副本数量为3
  selector:
    matchLabels:
      app: eladminweb
  template:
    metadata:
      labels:
        app: eladminweb
    spec:
      imagePullSecrets:
      - name: registry-192.168.199.88
      containers:
      - image: 192.168.199.88/ae/eladmin-web:v2
        name: container
---
apiVersion: v1
kind: Service
metadata:
  name: eladminweb       # Service的名称 ，svc  ip，dns,自定义，做好按业务名称，通俗易懂
  namespace: eladmin    #和之前创建的后端放一个名称空间中
spec:
  selector:          # Label Selector，选择包含app=nginx标签的Pod，后面只要这个命名空间中带这个标签的server IP就会自动发现
    app: eladminweb  #之前创建pod中的保持一致
  ports:
  - name: service
    targetPort: 80   # Pod的端口
    port: 80        # Service对外暴露的端口，也就是ClusterIP的port
    protocol: TCP    # 转发协议类型，支持TCP和UDP
  type: NodePort   # Service的类型

验证和数据库关联

[root@k8s-master eladmin]# kubectl -n eladmin exec -it mysql-84fdfffcd7-cpbsg /bin/bash
mysql -uroot -p
 show databases;
 use eldmin;
show tables;
 select * from  sys_user;

另外一种创建mysql redis在k8s集群外部

新创建一个eladmin2的文件夹和名称空间

[root@k8s-master ~]# mkdir eladmin2
[root@k8s-master ~]# cd eladmin2
 kubectl create ns eladmin2
cd eladmin2


[root@k8s-master eladmin2]# telnet  192.168.199.142 3306
Trying 192.168.199.142...
Connected to 192.168.199.142.
Escape character is '^]'.
J
5.7.44%S9n.onGÿ

标签：容器,Java,name,改造,192.168,eladmin,sys,mysql,root	

From： https://www.cnblogs.com/9527com/p/18180704