作者 | LemonSquash
来源 | cnblogs.com/npeng/p/14267007.html
1.手工方式
1.1.准备Springboot jar项目
将项目打包成jar
1.2.编写Dockerfile
FROM java:8
VOLUME /tmp
ADD elk-web-1.0-SNAPSHOT.jar elk.jar
EXPOSE 8080
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/elk.jar"]
FROM：表示基础镜像，即运行环境
VOLUME：/tmp创建/tmp目录并持久化到Docker数据文件夹，因为Spring Boot使用的内嵌Tomcat容器默认使用/tmp作为工作目录
ADD：拷贝文件并且重命名(ADD elk-web-1.0-SNAPSHOT.jar elk.jar 将应用jar包复制到/elk.jar)
EXPOSE：并不是真正的发布端口，这个只是容器部署人员与建立image的人员之间的交流，即建立image的人员告诉容器布署人员容器应该映射哪个端口给外界
ENTRYPOINT：容器启动时运行的命令，相当于我们在命令行中输入java -jar xxxx.jar，为了缩短 Tomcat 的启动时间，添加java.security.egd的系统属性指向/dev/urandom作为 ENTRYPOINT
1.3.构建容器
[root@VM_0_15_centos elk]# docker build -t elk .
Sending build context to Docker daemon 14.43 MB
Step 1/5 : FROM java:8
Trying to pull repository docker.io/library/java ...
8: Pulling from docker.io/library/java
5040bd298390: Pull complete
fce5728aad85: Pull complete
76610ec20bf5: Pull complete
60170fec2151: Pull complete
e98f73de8f0d: Pull complete
11f7af24ed9c: Pull complete
49e2d6393f32: Pull complete
bb9cdec9c7f3: Pull complete
Digest: sha256:c1ff613e8ba25833d2e1940da0940c3824f03f802c449f3d1815a66b7f8c0e9d
Status: Downloaded newer image for docker.io/java:8---> d23bdf5b1b1b
Step 2/5 : VOLUME /tmp---> Running in 0aec2dc2f98c---> a52e844f25d4
Removing intermediate container 0aec2dc2f98c
Step 3/5 : ADD elk-web-1.0-SNAPSHOT.jar elk.jar---> 3ba2f4fdddda
Removing intermediate container 860a0f748a23
Step 4/5 : EXPOSE 8080---> Running in 1d3331cc2be6---> e9ac33d26ce0
Removing intermediate container 1d3331cc2be6
Step 5/5 : ENTRYPOINT java -Djava.security.egd=file:/dev/./urandom -jar /elk.jar---> Running in d354f8ee2af5---> 8937e1ade6c7
Removing intermediate container d354f8ee2af5
Successfully built 8937e1ade6c7
1.4.运行容器
docker run -di --name 容器名称 -p 8080:8080 镜像名称
其中-d表示后台运行容器，这也就自然地解决的Spring Boot不支持后台运行应用程序的问题。
-p 8080:8080表示将容器内部的8080端口映射到宿主机器的8080端口，这样就可以通过宿主机器直接访问应
用。--name 给容器取一个容易记住的名字方便日后管理。
[root@VM_0_15_centos elk]# docker run -di --name myspringboot -p 8080:8080 8937e1ade6c7
04d6b2c347950a10c95a039c94a3e51d717e516dd8c3c742e3197687dfcf5523
[root@VM_0_15_centos elk]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
04d6b2c34795 8937e1ade6c7 "java -Djava.secur..." 8 seconds ago Up 7 seconds 0.0.0.0:8080->8080/tcp myspringboot
[root@VM_0_15_centos elk]#
1.5.查看运行日志
docker logs -f --tail=100 容器名称
[root@VM_0_15_centos elk]# docker logs -f --tail=100 04d6b2c34795. ____ _ __ _ _/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \\\/ ___)| |_)| | | | | || (_| | ) ) ) )' |____| .__|_| |_|_| |_\__, | / / / /=========|_|==============|___/=/_/_/_/:: Spring Boot :: (v1.5.4.RELEASE)
2019-12-29 07:42:58.982 INFO 1 --- [ main] c.b.ElkExampleSpringBootApplication : Starting ElkExampleSpringBootApplication v1.0-SNAPSHOT on 04d6b2c34795 with PID 1 (/elk.jar started by root in /)
2019-12-29 07:42:58.999 INFO 1 --- [ main] c.b.ElkExampleSpringBootApplication : No active profile set, falling back to default profiles: default
2019-12-29 07:42:59.243 INFO 1 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@5a2e4553: startup date [Sun Dec 29 07:42:59 UTC 2019]; root of context hierarchy
2019-12-29 07:43:03.652 INFO 1 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2019-12-29 07:43:03.699 INFO 1 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2019-12-29 07:43:03.714 INFO 1 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.15
2019-12-29 07:43:04.012 INFO 1 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2019-12-29 07:43:04.012 INFO 1 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 4772 ms
2019-12-29 07:43:04.449 INFO 1 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2019-12-29 07:43:04.470 INFO 1 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2019-12-29 07:43:04.470 INFO 1 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2019-12-29 07:43:04.471 INFO 1 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2019-12-29 07:43:04.471 INFO 1 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2019-12-29 07:43:05.534 INFO 1 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@5a2e4553: startup date [Sun Dec 29 07:42:59 UTC 2019]; root of context hierarchy
2019-12-29 07:43:05.765 INFO 1 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/exception]}" onto public java.lang.String com.bruceliu.controller.ELKController.exception()
2019-12-29 07:43:05.766 INFO 1 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/elkdemo]}" onto public java.lang.String com.bruceliu.controller.ELKController.helloWorld()
2019-12-29 07:43:05.772 INFO 1 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2019-12-29 07:43:05.780 INFO 1 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2019-12-29 07:43:05.869 INFO 1 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-12-29 07:43:05.869 INFO 1 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-12-29 07:43:05.984 INFO 1 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-12-29 07:43:06.387 INFO 1 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2019-12-29 07:43:06.537 INFO 1 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2019-12-29 07:43:06.562 INFO 1 --- [ main] c.b.ElkExampleSpringBootApplication : Started ElkExampleSpringBootApplication in 8.771 seconds (JVM running for 9.832)
1.6.访问测试
2.Idea一键部署
2.1.配置docker远程连接端口
首先编辑我们服务器上的docker文件
vim /usr/lib/systemd/system/docker.service
修改以ExecStart开头的行（centos 7）：添加
-H tcp://0.0.0.0:2375 -H unix:///var/run/docker.sock \
修改后保存文件，然后重启docker
systemctl daemon-reload
service docker restart
重启之后测试远程连接是否正常，这里的2375是之前配置的端口
curl http://localhost:2375/version
看到返回信息基本上就没有问题了
[root@VM_0_15_centos elk]# curl http://localhost:2375/version
{"Version":"1.13.1","ApiVersion":"1.26","MinAPIVersion":"1.12","GitCommit":"7f2769b/1.13.1","GoVersion":"go1.10.3","Os":"linux","Arch":"amd64","KernelVersion":"3.10.0-957.21.3.el7.x86_64","BuildTime":"2019-09-15T14:06:47.565778468+00:00","PkgVersion":"docker-1.13.1-103.git7f2769b.el7.centos.x86_64"}
然后开启端口，或者关闭防火墙，二者选其一即可
firewall-cmd --zone=public --add-port=2375/tcp --permanent
chkconfig iptables off
然后打开浏览器测试将之前的localhost修改为你的ip
2.2.使用idea连接到docker
首先下载docker插件，idea2019自带了docker插件。如果没有插件可以选择安装docker插件。
然后配置docker地址，在你的File | Settings | Build, Execution, Deployment | Docker
配置完成链接之后，出现了框中的内容即可.
链接成功之后会列出容器和镜像!
配置阿里云镜像加速器：
2.3.docker-maven-plugin 介绍
在我们持续集成过程中，项目工程一般使用 Maven 编译打包，然后生成镜像，通过镜像上线，能够大大提供上线效率，同时能够快速动态扩容，快速回滚，着实很方便。
docker-maven-plugin 插件就是为了帮助我们在Maven工程中，通过简单的配置，自动生成镜像并推送到仓库中。
pom.xml:
<build><finalName>${project.artifactId}</finalName><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration><fork>true</fork></configuration></plugin><!-- 跳过单元测试 --><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-surefire-plugin</artifactId><configuration><skipTests>true</skipTests></configuration></plugin><!--使用docker-maven-plugin插件--><plugin><groupId>com.spotify</groupId><artifactId>docker-maven-plugin</artifactId><version>1.0.0</version><!--将插件绑定在某个phase执行--><executions><execution><id>build-image</id><!--用户只需执行mvn package ，就会自动执行mvn docker:build--><phase>package</phase><goals><goal>build</goal></goals></execution></executions><configuration><!--指定生成的镜像名--><imageName>bruceliu/${project.artifactId}</imageName><!--指定标签--><imageTags><imageTag>latest</imageTag></imageTags><!--指定基础镜像jdk1.8--><baseImage>java</baseImage><!--镜像制作人本人信息--><maintainer>bruceliu@email.com</maintainer><!--切换到ROOT目录--><workdir>/ROOT</workdir><cmd>["java", "-version"]</cmd><entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint><!--指定远程 docker api地址--><dockerHost>http://122.51.50.249:2375</dockerHost><!-- 这里是复制 jar 包到 docker 容器指定目录配置 --><resources><resource><targetPath>/</targetPath><!--jar 包所在的路径 此处配置的 即对应 target 目录--><directory>${project.build.directory}</directory><!--用于指定需要复制的文件 需要包含的 jar包 ，这里对应的是 Dockerfile中添加的文件名 --><include>${project.build.finalName}.jar</include></resource></resources></configuration></plugin></plugins></build>
执行Maven打包命令：
G:\softDevelopment\JDK8\bin\java -Dmaven.multiModuleProjectDirectory=E:\workspace2017\elk-web -Dmaven.home=E:\Maven20190910\apache-maven-3.6.1 -Dclassworlds.conf=E:\Maven20190910\apache-maven-3.6.1\bin\m2.conf "-javaagent:G:\idea2017\IntelliJ IDEA 2017.3.1\lib\idea_rt.jar=49260:G:\idea2017\IntelliJ IDEA 2017.3.1\bin" -Dfile.encoding=UTF-8 -classpath E:\Maven20190910\apache-maven-3.6.1\boot\plexus-classworlds-2.6.0.jar org.codehaus.classworlds.Launcher -Didea.version=2017.3.7 -s E:\Maven20190910\apache-maven-3.6.1\conf\settings.xml -Dmaven.repo.local=E:\Maven20190910\repository package
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for com.bruceliu.elk.demo:elk-web:jar:1.0-SNAPSHOT
[WARNING] 'build.plugins.plugin.(groupId:artifactId)' must be unique but found duplicate declaration of plugin org.springframework.boot:spring-boot-maven-plugin @ line 36, column 21
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]
[INFO]
[INFO] -------------------< com.bruceliu.elk.demo:elk-web >--------------------
[INFO] Building elk-web 1.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ elk-web ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ elk-web ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 2 source files to E:\workspace2017\elk-web\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ elk-web ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory E:\workspace2017\elk-web\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ elk-web ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:2.18.1:test (default-test) @ elk-web ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- maven-jar-plugin:2.6:jar (default-jar) @ elk-web ---
[INFO] Building jar: E:\workspace2017\elk-web\target\elk-web.jar
[INFO]
[INFO] --- spring-boot-maven-plugin:1.5.4.RELEASE:repackage (default) @ elk-web ---
[INFO]
[INFO] --- docker-maven-plugin:1.0.0:build (build-image) @ elk-web ---
[INFO] Using authentication suppliers: [ConfigFileRegistryAuthSupplier]
[INFO] Copying E:\workspace2017\elk-web\target\elk-web.jar -> E:\workspace2017\elk-web\target\docker\elk-web.jar
[INFO] Building image bruceliu/elk-web
Step 1/6 : FROM java---> d23bdf5b1b1b
Step 2/6 : MAINTAINER bruceliu@email.com---> Running in 787e4786fbd4---> 4d4519f52fda
Removing intermediate container 787e4786fbd4
Step 3/6 : WORKDIR /ROOT---> f40dcbc9a9eb
Removing intermediate container 7fa6bbc9d1df
Step 4/6 : ADD /elk-web.jar //---> c7f1107ae3d4
Removing intermediate container f370558f1a38
Step 5/6 : ENTRYPOINT java -jar /elk-web.jar---> Running in e4480ced0829---> b634ca5fa5ad
Removing intermediate container e4480ced0829
Step 6/6 : CMD java -version---> Running in cc6a064ef921---> cf9a5d50326b
Removing intermediate container cc6a064ef921
Successfully built cf9a5d50326b
[INFO] Built bruceliu/elk-web
[INFO] Tagging bruceliu/elk-web with latest
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 10.329 s
[INFO] Finished at: 2019-12-29T22:44:06+08:00
[INFO] ------------------------------------------------------------------------Process finished with exit code 0
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