SpringCloud（第 053 篇）CentOS7 中用 Docker 部署一个简单的基于 Eureka 服务治理发现的项目
一、大致介绍
1、纠结了一下下，这么简单的部署流程是否需要详细的贴出来，然而纠结了一下还是将这个简单的部署流程补充完整了；2、经过上节的讲解，相信大家已经对docker的命令操作都有了一定的了解，这里我就暂且默认大家都拥有了可操作的环境以及了解操作指令；3、本章节基于docker来操作部署SpringCloud项目；4、注意在利用idea打包生成jar文件时，里面的localhost请改成你的宿主机的ip地址，但是如果统一部署到测试或者生产环境的话，请改为动态配置，方便动态修改，因此我这里做测试的话，首先将代码中的localhost就直接改成宿主机的ip地址，然后再打出jar包；
二、针对简单用户微服务进行docker部署
2.1 利用 idea 对 springms-simple-provider-user 项目进行打包
1、这个打包就看大家喜好，用命令打包也好，用鼠标操作打包也好，反正目的就是在项目的target目录下生成jar文件即可；2、本人这里使用ideaIDE开发工具，就沿着 Maven Project -> springms-simple-provider-user -> Lifecycle -> package 路径双击 package 即可；3、然后就会看到项目中 springms-simple-provider-user/target 下多了一个 springms-simple-provider-user-1.0-SNAPSHOT.jar 文件；
2.2 上传 springms-simple-provider-user-1.0-SNAPSHOT.jar 至 linux 服务器
1、本人在Linux下喜欢操作命令，所以这里就给大家演示一下怎么用SecureCRT执行命令将文件传到服务器；2、首先登录上服务器就不用说了，然后在SecureCRT中操作 “alt+p” 快捷键操作，此时将会打开一个新的页签，页签的第一行则是 “sftp>” 这个字样，说明已经进入了上传文件的命令窗口了；3、找到需要将文件放置到服务器的位置； sftp> cd /home/docker/demo sftp> put D:\ANDROID\Code\Spring-Cloud\SpringCloudTutorial\springms-simple-provider-user\target\springms-simple-provider-user-1.0-SNAPSHOT.jar Uploading springms-simple-provider-user-1.0-SNAPSHOT.jar to /home/docker/demo/springms-simple-provider-user-1.0-SNAPSHOT.jar 100% 31995KB 1333KB/s 00:00:24 D:/ANDROID/Code/Spring-Cloud/SpringCloudTutorial/springms-simple-provider-user/target/springms-simple-provider-user-1.0-SNAPSHOT.jar: 32763475 bytes transferred in 24 seconds (1333 KB/s) sftp> 4、然后切换到刚刚敲 “alt+p” 快捷键的那个窗口，执行命令查看文件是否上传成功 [root@svr01 ~]# ls /home/docker/demo springms-simple-provider-user-1.0-SNAPSHOT.jar
2.3 编写并保存 Dockerfile 文件
1、进入 /home/docker/demo [root@svr01 ~]# cd /home/docker/demo2、采用 vim或者vi 命令创建 Dockerfile 文件，并输入文件内容 [root@svr01 demo]# vim Dockerfile FROM frolvlad/alpine-oraclejdk8:slim VOLUME /tmp ADD springms-simple-provider-user-1.0-SNAPSHOT.jar app.jar RUN sh -c 'touch /app.jar' ENV JAVA_OPTS="" ENTRYPOINT [ "sh", "-c", "java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar" ]3、保存 Dockerfile 文件内容，执行命令顺序如下，命令的先后执行顺序为： Esc Shift+: wq Enter
2.4 用 docker build 命令将给定的Dockerfile和上下文以构建Docker镜像
1、构建镜像 [root@svr01 demo]# docker build -t springms-simple-provider-user . Sending build context to Docker daemon 32.77 MB Step 1 : FROM frolvlad/alpine-oraclejdk8:slim ---> 4f03dc990224 Step 2 : VOLUME /tmp ---> Running in dfd09d567767 ---> f76843b950c7 Removing intermediate container dfd09d567767 Step 3 : ADD springms-simple-provider-user-1.0-SNAPSHOT.jar app.jar ---> e009af0cc3bc Removing intermediate container 0884992be7c0 Step 4 : RUN sh -c 'touch /app.jar' ---> Running in 4fb67225860f ---> 06320de95ea3 Removing intermediate container 4fb67225860f Step 5 : ENV JAVA_OPTS "" ---> Running in 519c55360fda ---> bb2377cac425 Removing intermediate container 519c55360fda Step 6 : ENTRYPOINT sh -c java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar ---> Running in 95eb606d0e57 ---> 2aaa88be3d65 Removing intermediate container 95eb606d0e57 Successfully built 2aaa88be3d652、查看产生的镜像 [root@svr01 demo]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE springms-simple-provider-user latest 2aaa88be3d65 6 seconds ago 235.6 MB docker.io/centos v2 11efb35f320c 7 hours ago 307.5 MB docker.io/frolvlad/alpine-oraclejdk8 latest 4f03dc990224 12 days ago 170.1 MB frolvlad/alpine-oraclejdk8 slim 4f03dc990224 12 days ago 170.1 MB docker.io/centos latest 3fa822599e10 2 weeks ago 203.5 MB docker.io/hello-world latest f2a91732366c 3 weeks ago 1.848 kB
2.5 启动刚刚构建好的 docker 镜像
[root@svr01 demo]# docker run -p 8000:8000 -t springms-simple-provider-user . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.4.1.RELEASE) 。。。。 【【【【【【 简单用户微服务 】】】】】】已启动.
2.6 测试docker部署springcloud项目是否成功
1、还记得我么在电脑本机测试的地址么，地址为：http://localhost:8000/simple/1 ?2、现在目前我在阿里云上部署操作，所以这个localhost我就需要换成阿里云的ip地址，总而言之这个localhost换成你docker所在服务器的宿主机ip地址准没错；
2.7 尝试停止刚才docker部署的项目
[root@svr01 docker]# docker ps -lCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES3a6393ce51b8 springms-simple-provider-user "sh -c 'java $JAVA_OP" 8 minutes ago Up 8 minutes 0.0.0.0:8000->8000/tcp sick_shannon[root@svr01 docker]# docker stop 3a6393ce51b83a6393ce51b8[root@svr01 docker]# docker ps -lCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES3a6393ce51b8 springms-simple-provider-user "sh -c 'java $JAVA_OP" 8 minutes ago Exited (137) 3 seconds ago sick_shannon[root@svr01 docker]#
2.8 小结
到此为止，我们已经将我们打包好的一个镜像成功部署了，并且可以成功在浏览器访问到输出数据；
三、用docker部署一个基于Eureka服务治理发现的项目
3.1 从 中挑选项目
1、springms-discovery-eureka 2、springms-provider-user3、springms-consumer-movie-feign
3.2 依次对刚刚选出来的3个项目进行打包，并产生的文件如下，打包前记得将localhost的记得改为宿主机ip地址
1、springms-discovery-eureka-1.0-SNAPSHOT.jar2、springms-provider-user-1.0-SNAPSHOT.jar3、springms-consumer-movie-feign-1.0-SNAPSHOT.jar
3.3 在服务器上构建docker项目目录
[root@svr01 ~]# cd /home/docker/[root@svr01 docker]# mkdir -p springms-consumer-movie-feign springms-discovery-eureka springms-provider-user[root@svr01 docker]# lltotal 3drwxr-xr-x 2 root root 76 Dec 15 12:59 demodrwxr-xr-x 2 root root 76 Dec 15 13:44 springms-consumer-movie-feigndrwxr-xr-x 2 root root 72 Dec 15 13:09 springms-discovery-eurekadrwxr-xr-x 2 root root 69 Dec 15 13:43 springms-provider-user[root@svr01 docker]#
3.4 将步骤 3.2 的三个jar文件按照步骤 2.2 的方式上传到对应服务器目录去
sftp> cd /home/docker/springms-discovery-eurekasftp> put D:\ANDROID\Code\Spring-Cloud\SpringCloudTutorial\springms-discovery-eureka\target\springms-discovery-eureka-1.0-SNAPSHOT.jarUploading springms-discovery-eureka-1.0-SNAPSHOT.jar to /home/docker/springms-discovery-eureka/springms-discovery-eureka-1.0-SNAPSHOT.jar 100% 31595KB 1333KB/s 00:00:24 D:/ANDROID/Code/Spring-Cloud/SpringCloudTutorial/springms-discovery-eureka/target/springms-discovery-eureka-1.0-SNAPSHOT.jar: 32776474 bytes transferred in 28 seconds (1383 KB/s)sftp> sftp> sftp> sftp> cd /home/docker/springms-provider-usersftp> put D:\ANDROID\Code\Spring-Cloud\SpringCloudTutorial\springms-provider-user\target\springms-provider-user-1.0-SNAPSHOT.jarUploading springms-discovery-eureka-1.0-SNAPSHOT.jar to /home/docker/springms-provider-user/springms-provider-user-1.0-SNAPSHOT.jar 100% 31565KB 1333KB/s 00:00:24 D:/ANDROID/Code/Spring-Cloud/SpringCloudTutorial/springms-provider-user/target/springms-provider-user-1.0-SNAPSHOT.jar: 32763789 bytes transferred in 27 seconds (1313 KB/s)sftp> sftp> sftp> sftp> cd /home/docker/springms-consumer-movie-feignsftp> put D:\ANDROID\Code\Spring-Cloud\SpringCloudTutorial\springms-consumer-movie-feign\target\springms-consumer-movie-feign-1.0-SNAPSHOT.jarUploading springms-discovery-eureka-1.0-SNAPSHOT.jar to /home/docker/springms-consumer-movie-feign/springms-consumer-movie-feign-1.0-SNAPSHOT.jar 100% 32195KB 1333KB/s 00:00:24 D:/ANDROID/Code/Spring-Cloud/SpringCloudTutorial/springms-consumer-movie-feign/target/springms-consumer-movie-feign-1.0-SNAPSHOT.jar: 32712375 bytes transferred in 25 seconds (1413 KB/s)
3.5 查看三个文件是否传至服务器成功
[root@svr01 docker]# lltotal 4drwxr-xr-x 2 root root 76 Dec 15 12:59 demodrwxr-xr-x 2 root root 76 Dec 15 13:44 springms-consumer-movie-feigndrwxr-xr-x 2 root root 72 Dec 15 13:09 springms-discovery-eurekadrwxr-xr-x 2 root root 69 Dec 15 13:43 springms-provider-user[root@svr01 docker]# ls springms-discovery-eureka/springms-discovery-eureka-1.0-SNAPSHOT.jar[root@svr01 docker]# ls springms-provider-user/springms-provider-user-1.0-SNAPSHOT.jar[root@svr01 docker]# ls springms-consumer-movie-feign/springms-consumer-movie-feign-1.0-SNAPSHOT.jar[root@svr01 docker]#
3.6 分别给3个模块构建Dockfile文件
[root@svr01 ~]# cd /home/docker/springms-discovery-eureka[root@svr01 springms-discovery-eureka]# vim DockerfileFROM frolvlad/alpine-oraclejdk8:slimVOLUME /tmpADD springms-discovery-eureka-1.0-SNAPSHOT.jar app.jarRUN sh -c 'touch /app.jar'ENV JAVA_OPTS=""ENTRYPOINT [ "sh", "-c", "java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar" ]保存Dockfile文件[root@svr01 springms-discovery-eureka]#[root@svr01 springms-discovery-eureka]# cd /home/docker/springms-provider-user[root@svr01 springms-provider-user]# vim DockerfileFROM frolvlad/alpine-oraclejdk8:slimVOLUME /tmpADD springms-provider-user-1.0-SNAPSHOT.jar app.jarRUN sh -c 'touch /app.jar'ENV JAVA_OPTS=""ENTRYPOINT [ "sh", "-c", "java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar" ]保存Dockfile文件[root@svr01 springms-provider-user]# cd /home/docker/springms-consumer-movie-feign[root@svr01 springms-consumer-movie-feign]# vim DockerfileFROM frolvlad/alpine-oraclejdk8:slimVOLUME /tmpADD springms-consumer-movie-feign-1.0-SNAPSHOT.jar app.jarRUN sh -c 'touch /app.jar'ENV JAVA_OPTS=""ENTRYPOINT [ "sh", "-c", "java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar" ]保存Dockfile文件[root@svr01 springms-consumer-movie-feign]# cd ..[root@svr01 docker]# ls springms-discovery-eureka/Dockerfile springms-discovery-eureka-1.0-SNAPSHOT.jar[root@svr01 docker]# ls springms-provider-user/Dockerfile springms-provider-user-1.0-SNAPSHOT.jar[root@svr01 docker]# ls springms-consumer-movie-feign/Dockerfile springms-consumer-movie-feign-1.0-SNAPSHOT.jar[root@svr01 docker]#
3.7 分别对3个模块进行镜像构建
[root@svr01 docker]# cd springms-discovery-eureka[root@svr01 springms-discovery-eureka]# docker build -t springms/discovery-eureka .[root@svr01 springms-discovery-eureka]# cd ../springms-provider-user[root@svr01 springms-provider-user]# docker build -t springms/provider-user .[root@svr01 springms-provider-user]# cd ../springms-consumer-movie-feign[root@svr01 springms-consumer-movie-feign]# docker build -t springms/consumer-movie-feign .[root@svr01 springms-consumer-movie-feign]# cd ..[root@svr01 docker]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEspringms/consumer-movie-feign latest f6e9ac5c27a7 19 hours ago 507.5 MBspringms/provider-user latest d2b16dc2df77 19 hours ago 535.2 MBspringms/discovery-eureka latest f0f8555dcd0b 19 hours ago 517.1 MB
3.8 分别手动启动3个模块
[root@svr01 docker]# docker run -p 8761:8761 -t -d springms/discovery-eureka[root@svr01 docker]# docker run -p 7900:7900 -t -d springms/provider-user[root@svr01 docker]# docker run -p 7910:7910 -t -d springms/consumer-movie-feign
3.9 测试
1、首先进入eureka注册中心：http://宿主机IP地址:8761，结果看到2个微服务已经注册上来了，若还没出现的话，稍微等待一下下；2、测试 http://宿主机IP地址:7910/movie/4，结果可以看到信息输出；3、说明上述相关的docker部署操作准确无误，一切正常；
3.10 后续展望
既然上面提到了手动部署操作，那么服务多的话，一个个手动部署，岂不是累死去啊，那么在后续的章节中，陆续给大家讲解采用docker服务编排部署操作；
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