docker部署项目

简单的一个示例

@SpringBootApplication
@EnableEurekaServer
@RestController
public class EurekaserverApplication implements CommandLineRunner{

    private static Logger logger = LoggerFactory.getLogger(EurekaserverApplication.class);

    public static void main(String[] args) {
        SpringApplication.run(EurekaserverApplication.class, args);
    }

    //用来测试 是否镜像容器是否成功
    @RequestMapping("/user")
    public Object findUser(){
        Map<String, String > map = new HashMap<>();
        map.put("name", "xuxiaoxiao");
        map.put("age","2");
        Optional o=Optional.empty();
        System.out.println(o.isPresent());
        logger.debug("========我是日志debug==========");
        logger.info("========我是日志info==========");
        return map;
    }

    @Override
    public void run(String... args) throws Exception {
        System.out.println("服务启动了");
    }
}

application.yml

server:
  port: 7001

eureka:
  instance:
    hostname: localhost
  client:
  #声明自己是个服务端
    registerWithEureka: false    #false表示不向注册中心注册自己
    fetchRegistry: false         #false表示自己就是注册中心，职责是维护实例，不参加检索
    serviceUrl:                  #设置eureka server的交互地址，即对外暴露的地址
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.wangtao</groupId>
    <artifactId>demo</artifactId>
    <version>1.0-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.1.RELEASE</version>
        <relativePath/>
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <!--docker私服地址-->
       <!-- <docker.repostory>47.93.130.192:5000</docker.repostory>-->
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>


    <dependencies>
        <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>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-all</artifactId>
            <version>4.1.6.Final</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                    <mainClass>com.wangtao.EurekaserverApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>



</project>

jar包不用跟我一样，普通的一个springboot工程依赖的jar包就行

maven clean install 打包传到linux服务器上

编写Dockefile文件

FROM jdk1.8  #基础镜像，需要提前把jdk做成镜像
VOLUME /tmp  #挂载的目录
#ARG JAR_FILE
ADD demo-1.0-SNAPSHOT.jar app.jar  #添加宿主机的jar包到容器内部
ENTRYPOINT ["java","-jar","app.jar"]  #启动执行命令

执行命令

docker build -t demo .      //后面有一个. 注意一下是当前路径（demo：打包成的镜像名称）

启动容器

docker run -d -p 7001:7001 --name=demo d164ad0330c9   //d164ad0330c9  (镜像id)

查看启动的容器

进入容器内部

有个app.jar,退出容器

可以看到已启动，访问一下

可以看到可以正常访问，下一遍介绍怎么用jenkins进行自动化部署