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『中级篇』Docker compose 部署一个复杂的应用（41）

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产品 Docker 架构

今天部署一个复杂的application。源码地址：https://github.com/limingios/docker中的No.4中的example-voting-app。里面包括5个模块。

个人主页：idig.com

Voting App

暴露给外边访问的，投票使用，里面有对应的候选人的选项。是个python项目。这个将投票结果放入redis中，在现实中投票的人都比较多，为了方便存储直接连通的redis内存中。

Dockfile

# 使用python2.7的镜像
FROM python:2.7

# 设置一个application的目录
WORKDIR /app

# 文件依赖，安装指定的目录，通过pip进行安装
ADD requirements.txt /app/requirements.txt
RUN pip install -r requirements.txt

# Copy our code from the current folder to /app inside the container
ADD . /app

# 暴露端口80
EXPOSE 80 

# 启动容器命令
CMD ["python", "app.py"]

Results App

暴露给外边访问的，实时的显示候选人的得票情况。是个node js项目。直接取PG数据库的结果。

Dockfile

FROM node:0.10

RUN mkdir /app
WORKDIR /app

ADD package.json /app/package.json
RUN npm install && npm ls
RUN mv /app/node_modules /node_modules

ADD . /app

ENV PORT 80
EXPOSE 80

CMD ["node", "server.js"]

worker

读取redis效果，并将结果记录到PG数据库，是个java项目。

Dockfile

FROM java:7

RUN apt-get update -qq && apt-get install -y maven && apt-get clean

WORKDIR /code

ADD pom.xml /code/pom.xml
RUN ["mvn", "dependency:resolve"]
RUN ["mvn", "verify"]

# Adding source, compile and package into a fat jar
ADD src /code/src
RUN ["mvn", "package"]

CMD ["/usr/lib/jvm/java-7-openjdk-amd64/bin/java", "-jar", "target/worker-jar-with-dependencies.jar"]

整合docker-compose.yml

里面配置文件包括5个项目：voting-app，result-app，worker，redis，db

docker-compose.yml

version: "3"

services:
  voting-app:
    build: ./voting-app/.
    volumes:
     - ./voting-app:/app
    ports:
      - "5000:80"
    links:
      - redis
    networks:
      - front-tier
      - back-tier

  result-app:
    build: ./result-app/.
    volumes:
      - ./result-app:/app
    ports:
      - "5001:80"
    links:
      - db
    networks:
      - front-tier
      - back-tier

  worker:
    build: ./worker
    links:
      - db
      - redis
    networks:
      - back-tier

  redis:
    image: redis
    ports: ["6379"]
    networks:
      - back-tier

  db:
    image: postgres:9.4
    volumes:
      - "db-data:/var/lib/postgresql/data"
    networks:
      - back-tier

volumes:
  db-data:

networks:
  front-tier:
  back-tier:

docker-compose 一键部署

到docker-compose.yml目录

sudo service docker restart
sudo docker-compose up
#查看eth1的ip地址 映射了2个端口5000和5001
ip a

PS：有老铁在安装worker项目的maven的时候报插件错误

[INFO] Scanning for projects...
Downloading: [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.4.1/maven-clean-plugin-2.4.1.pom](http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.4.1/maven-clean-plugin-2.4.1.pom)
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-clean-plugin:2.4.1: Plugin org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1
Downloading: [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-install-plugin/2.3.1/maven-install-plugin-2.3.1.pom](http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-install-plugin/2.3.1/maven-install-plugin-2.3.1.pom)
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-install-plugin:2.3.1: Plugin org.apache.maven.plugins:maven-install-plugin:2.3.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-install-plugin:jar:2.3.1
Downloading: [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-deploy-plugin/2.5/maven-deploy-plugin-2.5.pom](http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-deploy-plugin/2.5/maven-deploy-plugin-2.5.pom)
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-deploy-plugin:2.5: Plugin org.apache.maven.plugins:maven-deploy-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-deploy-plugin:jar:2.5
Downloading: [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-site-plugin/2.0.1/maven-site-plugin-2.0.1.pom](http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-site-plugin/2.0.1/maven-site-plugin-2.0.1.pom)
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-site-plugin:2.0.1: Plugin org.apache.maven.plugins:maven-site-plugin:2.0.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-site-plugin:jar:2.0.1
Downloading: [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-antrun-plugin/1.3/maven-antrun-plugin-1.3.pom](http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-antrun-plugin/1.3/maven-antrun-plugin-1.3.pom)
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-antrun-plugin:1.3: Plugin org.apache.maven.plugins:maven-antrun-plugin:1.3 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-antrun-plugin:jar:1.3
Downloading: [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-assembly-plugin/2.2-beta-5/maven-assembly-plugin-2.2-beta-5.pom](http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-assembly-plugin/2.2-beta-5/maven-assembly-plugin-2.2-beta-5.pom)
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-5: Plugin org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-assembly-plugin:jar:2.2-beta-5
Downloading: [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.1/maven-dependency-plugin-2.1.pom](http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.1/maven-dependency-plugin-2.1.pom)
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-dependency-plugin:2.1: Plugin org.apache.maven.plugins:maven-dependency-plugin:2.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-dependency-plugin:jar:2.1
Downloading: [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-release-plugin/2.0/maven-release-plugin-2.0.pom](http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-release-plugin/2.0/maven-release-plugin-2.0.pom)
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-release-plugin:2.0: Plugin org.apache.maven.plugins:maven-release-plugin:2.0 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-release-plugin:jar:2.0
Downloading: [http://repo1.maven.org/maven2/org/codehaus/mojo/maven-metadata.xml](http://repo1.maven.org/maven2/org/codehaus/mojo/maven-metadata.xml)
Downloading: [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-metadata.xml](http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-metadata.xml)
[WARNING] Could not transfer metadata org.apache.maven.plugins/maven-metadata.xml from/to central ([http://repo1.maven.org/maven2](http://repo1.maven.org/maven2)): Error transferring file: Connection timed out: connect
[WARNING] Could not transfer metadata org.codehaus.mojo/maven-metadata.xml from/to central ([http://repo1.maven.org/maven2](http://repo1.maven.org/maven2)): Error transferring file: Connection timed out: connect
Downloading: [http://repo1.maven.org/maven2/org/codehaus/mojo/maven-metadata.xml](http://repo1.maven.org/maven2/org/codehaus/mojo/maven-metadata.xml)
Downloading: [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-metadata.xml](http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-metadata.xml)
[WARNING] Could not transfer metadata org.apache.maven.plugins/maven-metadata.xml from/to central ([http://repo1.maven.org/maven2](http://repo1.maven.org/maven2)): Error transferring file: Connection timed out: connect
[WARNING] Could not transfer metadata org.codehaus.mojo/maven-metadata.xml from/to central ([http://repo1.maven.org/maven2](http://repo1.maven.org/maven2)): Error transferring file: Connection timed out: connect
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3:30.786s
[INFO] Finished at: Sun Jul 08 15:55:29 CST 2012
[INFO] Final Memory: 2M/121M
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'archetype' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (D:\project\.mave_repo\repo), central ([http://repo1.maven.org/maven2](http://repo1.maven.org/maven2))] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] [http://cwiki.apache.org/confluence/display/MAVEN/NoPluginFoundForPrefixException](http://cwiki.apache.org/confluence/display/MAVEN/NoPluginFoundForPrefixException)

我更新了worker目录下的Dockerfile文件，使用阿里云maven仓库地址覆盖了原来的maven地址。我是先找到docker所在的容器，通过install maven的时候maven的安装路径：/usr/share/maven/conf/ ，然后将本地的settings.xml覆盖原来的地址就可以解决了。

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