无法连接dockerized春季启动应用dockerized postgre SQL

Question

我有一个码头工人，compose.yml有两个服务：

version: '2' 
services: 

    stuffer: 
    container_name: stuffer_container 
    build: . 
    ports: 
    - "8080:8080" 
    environment: 
    - spring.profiles.active=dev 
    depends_on: 
    - postgreDB 

    postgreDB: 
    container_name: postgreDB_container 
    image: "postgres:9.6.2" 
    ports: 
    - "5432:5432" 
    expose: 
    - "5432" 
    environment: 
    - POSTGRES_DB=stuffer 
    - POSTGRES_USER=postgres 
    - POSTGRES_PASSWORD=root123 
    volumes: 
    - /home/iwaneez/postgreData:/var/lib/postgresql/data 

我的应用程序有application-dev.properties：

## Datasource config 
spring.datasource.driver-class-name=org.postgresql.Driver 
spring.datasource.url=jdbc:postgresql://postgreDB:5432/stuffer 
spring.datasource.username=postgres 
spring.datasource.password=root123 

当我运行它们同时使用

码头工人，组成了

我得到连接被拒绝例外：

stuffer_container | Caused by: org.springframework.jdbc.datasource.init.UncategorizedScriptException: Failed to execute database script; nested exception is org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. 
stuffer_container |  at org.springframework.jdbc.datasource.init.DatabasePopulatorUtils.execute(DatabasePopulatorUtils.java:60) ~[spring-jdbc-4.3.7.RELEASE.jar!/:4.3.7.RELEASE] 
stuffer_container |  at org.springframework.boot.autoconfigure.jdbc.DataSourceInitializer.runScripts(DataSourceInitializer.java:192) ~[spring-boot-autoconfigure-1.5.2.RELEASE.jar!/:1.5.2.RELEASE] 
stuffer_container |  at org.springframework.boot.autoconfigure.jdbc.DataSourceInitializer.runSchemaScripts(DataSourceInitializer.java:92) ~[spring-boot-autoconfigure-1.5.2.RELEASE.jar!/:1.5.2.RELEASE] 
stuffer_container |  at org.springframework.boot.autoconfigure.jdbc.DataSourceInitializer.init(DataSourceInitializer.java:83) ~[spring-boot-autoconfigure-1.5.2.RELEASE.jar!/:1.5.2.RELEASE] 
stuffer_container |  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131] 
stuffer_container |  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131] 
stuffer_container |  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131] 
stuffer_container |  at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131] 
stuffer_container |  at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:366) ~[spring-beans-4.3.7.RELEASE.jar!/:4.3.7.RELEASE] 
stuffer_container |  at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:311) ~[spring-beans-4.3.7.RELEASE.jar!/:4.3.7.RELEASE] 
stuffer_container |  at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:134) ~[spring-beans-4.3.7.RELEASE.jar!/:4.3.7.RELEASE] 
stuffer_container |  ... 61 common frames omitted 
stuffer_container | Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. 
stuffer_container |  at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80) ~[spring-jdbc-4.3.7.RELEASE.jar!/:4.3.7.RELEASE] 
stuffer_container |  at org.springframework.jdbc.datasource.init.DatabasePopulatorUtils.execute(DatabasePopulatorUtils.java:46) ~[spring-jdbc-4.3.7.RELEASE.jar!/:4.3.7.RELEASE] 
stuffer_container |  ... 71 common frames omitted 
stuffer_container | Caused by: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. 
stuffer_container |  at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:138) ~[postgresql-9.1-901-1.jdbc4.jar!/:na] 
stuffer_container |  at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:66) ~[postgresql-9.1-901-1.jdbc4.jar!/:na] 
stuffer_container |  at org.postgresql.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection.java:125) ~[postgresql-9.1-901-1.jdbc4.jar!/:na] 
stuffer_container |  at org.postgresql.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection.java:30) ~[postgresql-9.1-901-1.jdbc4.jar!/:na] 
stuffer_container |  at org.postgresql.jdbc3g.AbstractJdbc3gConnection.<init>(AbstractJdbc3gConnection.java:22) ~[postgresql-9.1-901-1.jdbc4.jar!/:na] 
stuffer_container |  at org.postgresql.jdbc4.AbstractJdbc4Connection.<init>(AbstractJdbc4Connection.java:32) ~[postgresql-9.1-901-1.jdbc4.jar!/:na] 
stuffer_container |  at org.postgresql.jdbc4.Jdbc4Connection.<init>(Jdbc4Connection.java:24) ~[postgresql-9.1-901-1.jdbc4.jar!/:na] 
stuffer_container |  at org.postgresql.Driver.makeConnection(Driver.java:393) ~[postgresql-9.1-901-1.jdbc4.jar!/:na] 
stuffer_container |  at org.postgresql.Driver.connect(Driver.java:267) ~[postgresql-9.1-901-1.jdbc4.jar!/:na] 
stuffer_container |  at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:310) ~[tomcat-jdbc-8.5.11.jar!/:na] 
stuffer_container |  at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:203) ~[tomcat-jdbc-8.5.11.jar!/:na] 
stuffer_container |  at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:732) ~[tomcat-jdbc-8.5.11.jar!/:na] 
stuffer_container |  at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:664) ~[tomcat-jdbc-8.5.11.jar!/:na] 
stuffer_container |  at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:479) ~[tomcat-jdbc-8.5.11.jar!/:na] 
stuffer_container |  at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:154) ~[tomcat-jdbc-8.5.11.jar!/:na] 
stuffer_container |  at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:118) ~[tomcat-jdbc-8.5.11.jar!/:na] 
stuffer_container |  at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:107) ~[tomcat-jdbc-8.5.11.jar!/:na] 
stuffer_container |  at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:131) ~[tomcat-jdbc-8.5.11.jar!/:na] 
stuffer_container |  at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) ~[spring-jdbc-4.3.7.RELEASE.jar!/:4.3.7.RELEASE] 
stuffer_container |  at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) ~[spring-jdbc-4.3.7.RELEASE.jar!/:4.3.7.RELEASE] 
stuffer_container |  ... 72 common frames omitted 
stuffer_container | Caused by: java.net.ConnectException: Connection refused (Connection refused) 
stuffer_container |  at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_131] 
stuffer_container |  at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_131] 
stuffer_container |  at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_131] 
stuffer_container |  at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_131] 
stuffer_container |  at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_131] 
stuffer_container |  at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_131] 
stuffer_container |  at java.net.Socket.connect(Socket.java:538) ~[na:1.8.0_131] 
stuffer_container |  at java.net.Socket.<init>(Socket.java:434) ~[na:1.8.0_131] 
stuffer_container |  at java.net.Socket.<init>(Socket.java:211) ~[na:1.8.0_131] 
stuffer_container |  at org.postgresql.core.PGStream.<init>(PGStream.java:62) ~[postgresql-9.1-901-1.jdbc4.jar!/:na] 
stuffer_container |  at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:76) ~[postgresql-9.1-901-1.jdbc4.jar!/:na] 
stuffer_container |  ... 91 common frames omitted 

我怎样才能连接到postgre在泊坞窗都运行的应用程序？

我也尝试运行Ubuntu的图像作为第三服务可以成功连接使用

telnet postgreDB 5432 

所以看起来它是可见的数据库，但应用仍无法连接到它。为localhost从postgreDB

更改数据源url属性像

spring.datasource.url=jdbc:postgresql://localhost:5432/stuffer 

让我连接从泊坞窗外面postgre的应用程序，但我需要他们的搬运工都在运行。

Answer 1

我设法通过运行

docker-compose build 

解决问题运行

docker-compose up 

的问题是，有一个古老的图像通过指向本地主机向前postgre。尽管我将配置中的主机更改为postgreDB但它并没有在上生成命令，正如我从命令手册中想到的那样。 所以没有变化反映在结果中。

Answer 2

尝试将您的数据源设置为jdbc:postgresql://postgreDB:5432/stuffer。 docker-compose根据提供的别名为每个容器分配主机名，或者如果未指定别名，它将使用docker-compose.yml中分配的服务名称。这全部在码头主机管理的网络内。

Answer 3

当您使用泊坞窗只运行postgresDB，因为你已经转发端口，Postgres的是适用于您的主机操作系统，并且可以使用localhost:5432

访问服务但是，当您使用泊坞窗撰写运行，每容器是不同的，因此你不能从你的spring应用程序容器访问localhost:5432。在这种情况下，postgresDB运行在单独的容器中，您需要使用容器的IP地址访问它。

但是，当您配置服务之间的依赖关系时，docker撰写解决了这个问题，docker compose会在您的容器中添加一个主机条目，这意味着您现在可以使用弹簧应用程序容器中的postgresDB:5432访问postgresDB。

看着你的application-dev.properties该配置看起来是正确的，但包含localhost的数据源url在docker撰写的情况下不起作用。