centos7下docker发布第一个微服务应用(Eureka)

1.在windows下打包

微服务应用通过maven进行打包，在项目的pom.xml执行mvn clean package，或者直接通过idea或者eclipse进行maven打包

之上操作将在项目的 target目录生成文件microservice-discovery-eureka-0.0.1-snapshot.jar 包

2.将microservice-discovery-eureka-0.0.1-snapshot.jar拷贝到linux环境(可以通过crt等连接方式)

3.在microservice-discovery-eureka-0.0.1-snapshot.jar所在的目录创建dockerfile文件，内容如下

 1 from java:8
 2 
 3 volume /tmp
 4 
 5 add microservice-discovery-eureka-0.0.1-snapshot.jar app.jar
 6 
 7 run bash -c 'touch /app.jar'
 8 
 9 expose 8761
10 
11 entrypoint ["java","-djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

 4.通过docker build命令构建新的镜像

(注意：dockerfile和jar包要在同一个文件夹下)

 执行命令 docker build -t cakin24/microservice-discovery-eureka-0.0.1 .   

 1 [root@localhost microfile]# ls
 2 dockerfile  microservice-discovery-eureka-0.0.1-snapshot.jar
 3 [root@localhost microfile]# docker build -t cakin24/microservice-discovery-eureka-0.0.1 .
 4 sending build context to docker daemon  44.79mb
 5 step 1/6 : from java:8
 6 8: pulling from library/java
 7 5040bd298390: pull complete 
 8 fce5728aad85: pull complete 
 9 76610ec20bf5: pull complete 
10 60170fec2151: pull complete 
11 e98f73de8f0d: pull complete 
12 11f7af24ed9c: pull complete 
13 49e2d6393f32: pull complete 
14 bb9cdec9c7f3: pull complete 
15 digest: sha256:c1ff613e8ba25833d2e1940da0940c3824f03f802c449f3d1815a66b7f8c0e9d
16 status: downloaded newer image for java:8
17  ---> d23bdf5b1b1b
18 step 2/6 : volume /tmp
19  ---> running in c6c8df634611
20 removing intermediate container c6c8df634611
21  ---> 1bdb7dd203b9
22 step 3/6 : add microservice-discovery-eureka-0.0.1-snapshot.jar app.jar
23  ---> d88f6144fb16
24 step 4/6 : run bash -c 'touch /app.jar'
25  ---> running in d217d42a3713
26 removing intermediate container d217d42a3713
27  ---> b24c68563734
28 step 5/6 : expose 8761
29  ---> running in 2a2663de2b31
30 removing intermediate container 2a2663de2b31
31  ---> 305d7a1bed02
32 step 6/6 : entrypoint ["java","-djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
33  ---> running in c7b7c777ee72
34 removing intermediate container c7b7c777ee72
35  ---> 6e55e8eef9b1
36 successfully built 6e55e8eef9b1
37 successfully tagged cakin24/microservice-discovery-eureka-0.0.1:latest
38 [root@localhost microfile]# docker images
39 repository                                           tag                 image id            created             size
40 cakin24/microservice-discovery-eureka-0.0.1          latest              6e55e8eef9b1        24 seconds ago      733mb
41 mysql                                                5.7                 e47e309f72c8        13 days ago         372mb
42 hello-world                                          latest              fce289e99eb9        7 weeks ago         1.84kb
43 java                                                 8                   d23bdf5b1b1b        2 years ago         643mb
44 registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql   5.7                 ec7e75e5260c        3 years ago         360mb

5.执行以下命令 运行微服务

查看镜像 docker images  通过上面步骤可以看到当前多了一个eureka的镜像，这个就是我们想要的

运行容器 docker run -d -p 8761:8761 cakin24/microservice-discovery-eureka-0.0.1

查看已经运行的容器情况  docker ps   可以看到eureka已经在运行当中

 1 [root@localhost microfile]# docker images
 2 repository                                           tag                 image id            created             size
 3 cakin24/microservice-discovery-eureka-0.0.1          latest              6e55e8eef9b1        24 seconds ago      733mb
 4 mysql                                                5.7                 e47e309f72c8        13 days ago         372mb
 5 hello-world                                          latest              fce289e99eb9        7 weeks ago         1.84kb
 6 java                                                 8                   d23bdf5b1b1b        2 years ago         643mb
 7 registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql   5.7                 ec7e75e5260c        3 years ago         360mb
 8 [root@localhost microfile]# docker run -d -p 8761:8761 cakin24/microservice-discovery-eureka-0.0.1
 9 bc05ffb47756bc1193f71c668acd2ddb51392de883dba3d6f26a786723d78397
10 [root@localhost microfile]# docker ps
11 container id        image                                         command                  created             status              ports                               names
12 bc05ffb47756        cakin24/microservice-discovery-eureka-0.0.1   "java -djava.securit…"   11 seconds ago      up 8 seconds        0.0.0.0:8761->8761/tcp              flamboyant_golick
13 e778509d7366        mysql:5.7                                     "docker-entrypoint.s…"   about an hour ago   up about an hour    0.0.0.0:3306->3306/tcp, 33060/tcp   pwc-mysql

6.查看运行效果

 访问发布的容器对应的ip和端口 效果如下,