IDEA 配置Docker的过程

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IDEA是Java最常用的开发工具，而Docker是当下最火的部署容器。

1.配置docker远程连接端口

vi /usr/lib/systemd/system/docker.service

找到 ExecStart，在最后面添加 -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock

重启docker

 systemctl daemon-reload
 systemctl start docker

开放端口2375

firewall-cmd --zone=public --add-port=2375/tcp --permanent

2.IDEA安装Docker插件

1. File->Settings->Plugins 搜索 docker integration

安装成功后重启IDEA

3.创建Springboot项目，配置连接远程docker pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.4.2</version>
    <relativePath/> <!-- lookup parent from repository -->
  </parent>
  <groupId>com.docker</groupId>
  <artifactId>idea-docker-demo</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>idea-docker-demo</name>
  <description>Demo project for Spring Boot</description>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <docker.image.prefix>com.docker</docker.image.prefix>
    <java.version>1.8</java.version>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
    <!-- Lombok -->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
    </dependency>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
      <plugin>
        <groupId>com.spotify</groupId>
        <artifactId>docker-maven-plugin</artifactId>
        <version>1.0.0</version>
        <configuration>
          <dockerDirectory>src/main/docker</dockerDirectory>
          <resources>
            <resource>
              <targetPath>/</targetPath>
              <directory>${project.build.directory}</directory>
              <include>${project.build.finalName}.jar</include>
            </resource>
          </resources>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-antrun-plugin</artifactId>
        <executions>
          <execution>
            <phase>package</phase>
            <configuration>
              <tasks>
                <copy todir="src/main/docker"
                   file="target/${project.artifactId}-${project.version}.${project.packaging}"></copy>
              </tasks>
            </configuration>
            <goals>
              <goal>run</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

    </plugins>
  </build>

</project>

application.properties

server.port=8887

logging.config=classpath:logback.xml
logging.path=/home/docker_demo/app/logs/

logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="false" scan="true" scanPeriod="1 seconds">

  <contextName>logback</contextName>
  <property name="log.path" value="/home/docker_demo/app/logs/docker_demo.log"/>

  <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%d{HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
    </encoder>
  </appender>

  <appender name="file" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>${log.path}</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <fileNamePattern>${log.path}.%d{yyyy-MM-dd}.zip</fileNamePattern>
    </rollingPolicy>
    <encoder>
      <pattern>%date %level [%thread] %logger{36} [%file : %line] %msg%n
      </pattern>
    </encoder>
  </appender>

  <root level="info">
    <appender-ref ref="console"/>
    <appender-ref ref="file"/>
  </root>

</configuration>

配置docker远程地址

在项目下创建Dockerfile文件

Dockerfile内容:

FROM openjdk:8-jdk-alpine
ADD *.jar app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

增加docker配置

命令解释
Image tag : 指定镜像名称和tag，镜像名称为 docker-demo，tag为1.1
Bind ports : 绑定宿主机端口到容器内部端口。格式为[宿主机端口]:[容器内部端口]
Bind mounts : 将宿主机目录挂到到容器内部目录中。格式为[宿主机目录]:[容器内部目录]。这个springboot项目会将日志打印在容器
/home/docker_demo/app/logs/ 目录下，将宿主机目录挂载到容器内部目录后，那么日志就会持久化容器外部的宿主机目录中。