無法連接dockerized春季啓動應用dockerized postgre SQL

Question

我有一個碼頭工人，compose.yml有兩個服務：

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 

我的應用程序有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 

當我運行它們同時使用

碼頭工人，組成了

我得到連接被拒絕例外：

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 

我怎樣才能連接到postgre在泊塢窗都運行的應用程序？

我也嘗試運行Ubuntu的圖像作爲第三服務可以成功連接使用

telnet postgreDB 5432 

所以看起來它是可見的數據庫，但應用仍無法連接到它。爲localhost從postgreDB

更改數據源url屬性像

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

讓我連接從泊塢窗外面postgre的應用程序，但我需要他們的搬運工都在運行。

Answer 1

我設法通過運行

docker-compose build 

解決問題運行

docker-compose up 

的問題是，有一個古老的圖像通過指向本地主機向前postgre。儘管我將配置中的主機更改爲postgreDB但它並沒有在上生成命令，正如我從命令手冊中想到的那樣。 所以沒有變化反映在結果中。

Answer 2

嘗試將您的數據源設置爲jdbc:postgresql://postgreDB:5432/stuffer。 docker-compose根據提供的別名爲每個容器分配主機名，或者如果未指定別名，它將使用docker-compose.yml中分配的服務名稱。這全部在碼頭主機管理的網絡內。

Answer 3

當您使用泊塢窗只運行postgresDB，因爲你已經轉發端口，Postgres的是適用於您的主機操作系統，並且可以使用localhost:5432

訪問服務但是，當您使用泊塢窗撰寫運行，每容器是不同的，因此你不能從你的spring應用程序容器訪問localhost:5432。在這種情況下，postgresDB運行在單獨的容器中，您需要使用容器的IP地址訪問它。

但是，當您配置服務之間的依賴關係時，docker撰寫解決了這個問題，docker compose會在您的容器中添加一個主機條目，這意味着您現在可以使用彈簧應用程序容器中的postgresDB:5432訪問postgresDB。

看着你的application-dev.properties該配置看起來是正確的，但包含localhost的數據源url在docker撰寫的情況下不起作用。