Docker 使用 Team City Agent 解决 DNS 问题

Question

我有以下 docker-compose.yml 文件，其中包含一个 Team City 服务器和代理，我想运行在我的本地 Win 10 开发机器上使用 Docker 版本 17.06.1-ce-win24 (13025):

version: '3.1'

services:
  tc_server:
    image: jetbrains/teamcity-server:2017.1.2
    ports: 
      - 8111:8111
    volumes:
      - teamcity_server:/data/teamcity_server/datadir
      - teamcity_server_logs:/opt/teamcity/logs
  tc_agent:
    image: jetbrains/teamcity-agent:2017.1.2
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - teamcity_agent_conf:/data/teamcity_agent/conf
    environment:
      SERVER_URL: http://tc_server:8111
volumes:
  teamcity_server:
  teamcity_server_logs:
  teamcity_agent_conf:

Team City 服务器和代理启动，但我在 UI 中看不到任何未经授权的代理。

我查看了 docker 日志：

tc_agent_1   | [2017-09-02 10:47:27,548]   WARN - buildServer.AGENT.registration - Error while asking server for the communication protocols via URL http://tc_server:8111/app/agents/protocols. Will try all protocols: java.net.ConnectException: Connection refused Connection refused) (enable debug to see stacktrace)
tc_agent_1   | [2017-09-02 10:47:27,549]   INFO - buildServer.AGENT.registration - Trying to register on server using 'polling' protocol.
tc_agent_1   | [2017-09-02 10:47:27,570]   INFO - buildServer.AGENT.registration - Registration using 'polling' protocol failed: java.net.ConnectException: Connection refused (Connection refused) (enable debug to see stacktrace)
tc_agent_1   | [2017-09-02 10:47:27,570]   INFO - buildServer.AGENT.registration - Trying to register on server using 'xml-rpc' protocol.
tc_agent_1   | [2017-09-02 10:47:27,581]   INFO - buildServer.AGENT.registration - Registration using 'xml-rpc' protocol failed: java.net.ConnectException: Connection refused (Connection refused) (enable debug to see stacktrace)
tc_agent_1   | [2017-09-02 10:47:27,581]   WARN - buildServer.AGENT.registration - Error registering on the server via URL http://tc_server:8111. Will continue repeating connection attempts.

看起来代理无法连接到服务器，但是运行执行此命令表明代理容器可以从 TC 服务器容器解析和检索（与日志警告相矛盾）：

docker-compose exec tc_agent curl http://tc_server:8111/app/agents/protocols
<list><string>polling</string></list>

我尝试从 Docker-compose.yml 文件中删除 Agent 并使用 Docker 将其分开（tc_default 是容器正在使用的网络):

docker run --rm --network tc_default -e SERVER_URL=http://tc_server:8111 jetbrains/teamcity-agent:2017.1.2

这给出了之前在日志中发现的相同错误。所以我求助于使用服务器的IP地址：

docker run --rm --network tc_default -e SERVER_URL=http://172.18.0.3:8111 jetbrains/teamcity-agent:2017.1.2

这有效，特工出现在 Team City 未授权特工列表中。

这是代理的 DNS 问题还是我使用 docker-compose 网络不正确？如果可能的话，我更愿意将服务器和代理保存在一个 Docker-compose 文件中。

Answer 1

您的 tc_server 需要在代理之前启动。在tc_agent服务配置里面添加如下内容，保证启动顺序：

depends_on:
      - tc_server

Answer 2

从您的服务名称中删除 _，它应该可以工作。我最近在 python 中发现使用 http://service_name:port 无效的问题。但是使用 http://servername:port 有效

虽然 _ 在许多图书馆和地方，它仍然不适用于所有人

Answer 3

这是对我有用的

docker-compose.yml

version: '3.8'
# Define the services/containers to be run
services:
  teamcity: # name of the service 
    image: 'jetbrains/teamcity-server'
    container_name: 'tmserver' # name of the container
    restart: always
    ports: 
      - "8111:8111" # specify the teamcity port default is 8111
    volumes: # This will store the plugin setup config data.
      - teamcity_data:/data/teamcity_server/datadir # Host is location /var/lib/docker/volumes/USERNAME_teamcity_data
      - teamcity_data:/opt/teamcity/logs

  teamcityagent: # name of the service 
    image: 'jetbrains/teamcity-agent'
    container_name: 'tmagent' # name of the container
    restart: always
    volumes: # This will store the plugin setup config data. example: /var/lib/docker/volumes/developer_teamcity_agent_data/_data
      - teamcity_agent_data:/data/teamcity_agent/conf # Host location /var/lib/docker/volumes/USERNAME_teamcity_agent_data 
    depends_on: # tells the teamcity_server to start first before the agent 
      - teamcity
    environment:  # Set environment variables aka Server url
      - SERVER_URL=http://teamcity:8111/ # we use the name teamcity for the url so its a container to container connection

volumes:
  teamcity_data:
  teamcity_agent_data:

Docker 使用 Team City Agent 解决 DNS 问题

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