一、开发前准备
1.Docker安装
可以参考:
https://docs.docker.com/install/
2.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,如下图所示
3.重启docker
systemctl daemon-reload
systemctl start docker
4.开放端口
firewall-cmd --zone=public --add-port=2375/tcp --permanent
5.Idea安装插件,重启
6.连接远程docker
1、编辑配置
2、填远程docker地址
3、连接成功,会列出远程docker容器和镜像
二、新建项目
1.创建springboot项目
项目结构图
1、配置pom文件
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0modelVersion><groupId>docker-demogroupId><artifactId>com.demoartifactId><version>1.0-SNAPSHOTversion><parent><groupId>org.springframework.bootgroupId><artifactId>spring-boot-starter-parentartifactId><version>2.0.2.RELEASEversion><relativePath />parent><properties><project.build.sourceEncoding>UTF-8project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding><docker.image.prefix>com.demodocker.image.prefix><java.version>1.8java.version>properties><build><plugins><plugin><groupId>org.springframework.bootgroupId><artifactId>spring-boot-maven-pluginartifactId>plugin><plugin><groupId>com.spotifygroupId><artifactId>docker-maven-pluginartifactId><version>1.0.0version><configuration><dockerDirectory>src/main/dockerdockerDirectory><resources><resource><targetPath>/targetPath><directory>${project.build.directory}directory><include>${project.build.finalName}.jarinclude>resource>resources>configuration>plugin><plugin><artifactId>maven-antrun-pluginartifactId><executions><execution><phase>packagephase><configuration><tasks><copy todir="src/main/docker" file="target/${project.artifactId}-${project.version}.${project.packaging}">copy>tasks>configuration><goals><goal>rungoal>goals>execution>executions>plugin>plugins>build><dependencies><dependency><groupId>org.springframework.bootgroupId><artifactId>spring-boot-starter-webartifactId>dependency><dependency><groupId>org.springframework.bootgroupId><artifactId>spring-boot-starter-testartifactId><scope>testscope>dependency><dependency><groupId>log4jgroupId><artifactId>log4jartifactId><version>1.2.17version>dependency>dependencies>project>
2、在src/main目录下创建docker目录,并创建Dockerfile文件
FROM openjdk:8-jdk-alpine
ADD *.jar app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
3、在resource目录下创建application.properties文件
logging.config=classpath:logback.xml
logging.path=/home/developer/app/logs/
server.port=8990
4、创建DockerApplication文件
@SpringBootApplicationpublic class DockerApplication {public static void main(String[] args) {
SpringApplication.run(DockerApplication.class, args);
}
}
5、创建DockerController文件
@RestControllerpublic class DockerController {
static Log log = LogFactory.getLog(DockerController.class);@RequestMapping("/")public String index() {
log.info("Hello Docker!");return "Hello Docker!";
}
}
6、增加配置
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/developer/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。
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这可能是最为详细的Docker入门吐血总结
Intellij IDEA神器那些让人爱不释手的小技巧
作者:陶章好
来源:https://juejin.im/post/5d026212f265da1b8608828b