如何鏈接泊塢窗撰寫文件（docker-compose.yml）中的容器？

Question

我無法使用docker撰寫鏈接MySQL和播放容器。看到下面的yml文件：

zookeeper: 
    image: zookeeper:3.4 
    ports: 
     - 2181:2181 
kafka: 
    image: ches/kafka:latest 
    ports: 
     - 9092:9092 
    links: 
     - zookeeper 
myDpm: 
    image: dpm-image:latest 
    ports: 
     - 9000:9000 
    links: 
     - kafka 
     - zookeeper 
mySql: 
    image: mysql:latest 
    environment: 
     MYSQL_ROOT_PASSWORD: root 
myMc3: 
    image: mc3-v3:3.0 
    ports: 
     - 9001:9000 
    links: 
     - mySql:3306 
    environment: 
     runMode: dev 
myElastic: 
    image: elasticsearch:2.4.0 
    ports: 
     - 9200:9200 

我想鏈接mysql與我的play scala項目。我得到一個錯誤：

[error] - [play.core.server.netty.PlayDefaultUpstreamHandler] - Cannot invoke the action java.sql.SQLTimeoutException: Timeout after 10001ms of waiting for a connection. at com.zaxxer.hikari.pool.BaseHikariPool.getConnection(BaseHikariPool.java:227) ~[com.zaxxer.HikariCP-java6-2.3.7.jar:na] at com.zaxxer.hikari.pool.BaseHikariPool.getConnection(BaseHikariPool.java:182) ~[com.zaxxer.HikariCP-java6-2.3.7.jar:na] at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:93) ~[com.zaxxer.HikariCP-java6-2.3.7.jar:na] at slick.jdbc.hikaricp.HikariCPJdbcDataSource.createConnection(HikariCPJdbcDataSource.scala:12) ~[com.typesafe.slick.slick-hikaricp_2.11-3.1.1.jar:na] at slick.jdbc.JdbcBackend$BaseSession.conn$lzycompute(JdbcBackend.scala:415) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.jdbc.JdbcBackend$BaseSession.conn(JdbcBackend.scala:414) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.jdbc.JdbcBackend$SessionDef$class.prepareStatement(JdbcBackend.scala:297) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.jdbc.JdbcBackend$BaseSession.prepareStatement(JdbcBackend.scala:407) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.jdbc.StatementInvoker.results(StatementInvoker.scala:33) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.jdbc.StatementInvoker.iteratorTo(StatementInvoker.scala:22) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.jdbc.Invoker$class.foreach(Invoker.scala:48) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.jdbc.StatementInvoker.foreach(StatementInvoker.scala:16) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.jdbc.Invoker$class.firstOption(Invoker.scala:24) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.jdbc.StatementInvoker.firstOption(StatementInvoker.scala:16) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.jdbc.StreamingInvokerAction$HeadOptionAction.run(StreamingInvokerAction.scala:57) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.jdbc.StreamingInvokerAction$HeadOptionAction.run(StreamingInvokerAction.scala:56) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.backend.DatabaseComponent$DatabaseDef$$anon$2.liftedTree1$1(DatabaseComponent.scala:237) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at slick.backend.DatabaseComponent$DatabaseDef$$anon$2.run(DatabaseComponent.scala:237) ~[com.typesafe.slick.slick_2.11-3.1.1.jar:na] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) ~[na:1.8.0_111] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) ~[na:1.8.0_111] at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_111] Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Answer 1

如前所述here泊塢窗鏈接一定程度上被網絡所取代。

Before the Docker network feature, you could use the Docker link feature to allow containers to discover each other. With the introduction of Docker networks, containers can be discovered by its name automatically.

默認情況下，在撰寫文件中的所有容器加入一個默認網絡（如果沒有其他的網絡被定義），你應該能夠通過使用服務名和正確的端口，如從其他服務訪問一個服務： mySql：3306

更多信息可在network docs from docker中找到。

Answer 2

正確鏈接到MySQL：

myMc3: 
    ... 
    links: 
    - mySql 

（不含3306）