在 docker 中运行时出现异常：org.postgresql.util.PSQLException：致命：用户“hamzabelmellouki”的密码验证失败

Posted 2023-02-27

【中文标题】在 docker 中运行时出现异常：org.postgresql.util.PSQLException：致命：用户“hamzabelmellouki”的密码验证失败

【英文标题】：Exception when running in docker: org.postgresql.util.PSQLException: FATAL: password authentication failed for user "hamzabelmellouki"

【发布时间】：2020-05-03 14:34:29

【问题描述】：

我对 docker 很陌生。我有一个连接到 postgres 数据库（在容器中运行）的 spring-boot 应用程序。我想 dockerize 我的 spring-boot 应用程序并能够将它连接到 postgres 数据库容器。

什么有效：

不使用 docker 运行应用程序就可以了：java -jar product-manager-0.0.1-SNAPSHOT.jar

什么不起作用：

Dockerizing and Running the application with Docker 给了我一个例外。

请注意，我在这里没有使用 docker-compose。 我的应用程序 Dockerfile：

FROM openjdk:11
ARG JAR_FILE=target/*.jar
COPY $JAR_FILE app.jar
ENTRYPOINT ["java","-jar","/app.jar"]

我为运行该应用所采取的步骤：

使用以下命令在容器中运行和启动 postgres 数据库：

docker run --rm --name lil-postgres -e POSTGRES_PASSWORD=password -d -v $HOME/srv/postgres:/var/lib/postgresql/data -p 5432:5432 postgres

postgres -D /usr/local/var/postgres

我已经构建了应用的镜像：

docker build -t ensa/product-manager . 这是运行最新命令的结果：

Sending build context to Docker daemon  38.01MB
Step 1/4 : FROM openjdk:11
 ---> 612d4d483eee
Step 2/4 : ARG JAR_FILE=target/*.jar
 ---> Running in 1b8674e959ca
Removing intermediate container 1b8674e959ca
 ---> d2c2b90680de
Step 3/4 : COPY $JAR_FILE app.jar
 ---> 01295beecd1b
Step 4/4 : ENTRYPOINT ["java","-jar","/app.jar"]
 ---> Running in 31230e7ff323
Removing intermediate container 31230e7ff323
 ---> c4487683e7b1
Successfully built c4487683e7b1
Successfully tagged ensa/product-manager:latest

最后，我创建了一个正在运行的容器：

docker run --net="host" -it ensa/product-manager

第三步导致异常：

org.postgresql.util.PSQLException: FATAL: password authentication failed for user "hamzabelmellouki"
        at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:520) ~[postgresql-42.2.8.jar!/:42.2.8]
        at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:141) ~[postgresql-42.2.8.jar!/:42.2.8]
        at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:192) ~[postgresql-42.2.8.jar!/:42.2.8]
        at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49) ~[postgresql-42.2.8.jar!/:42.2.8]
        at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:195) ~[postgresql-42.2.8.jar!/:42.2.8]
        at org.postgresql.Driver.makeConnection(Driver.java:458) ~[postgresql-42.2.8.jar!/:42.2.8]
        at org.postgresql.Driver.connect(Driver.java:260) ~[postgresql-42.2.8.jar!/:42.2.8]
        at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.1.jar!/:na]
        at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:353) ~[HikariCP-3.4.1.jar!/:na]
        at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201) ~[HikariCP-3.4.1.jar!/:na]
        at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) ~[HikariCP-3.4.1.jar!/:na]
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:562) ~[HikariCP-3.4.1.jar!/:na]
        at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.4.1.jar!/:na]
        at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.4.1.jar!/:na]
        at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:158) ~[spring-jdbc-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:116) ~[spring-jdbc-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:79) ~[spring-jdbc-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:324) ~[spring-jdbc-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.boot.jdbc.EmbeddedDatabaseConnection.isEmbedded(EmbeddedDatabaseConnection.java:120) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.autoconfigure.orm.jpa.HibernateDefaultDdlAutoProvider.getDefaultDdlAuto(HibernateDefaultDdlAutoProvider.java:42) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration.lambda$getVendorProperties$1(HibernateJpaConfiguration.java:130) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.autoconfigure.orm.jpa.HibernateSettings.getDdlAuto(HibernateSettings.java:41) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.autoconfigure.orm.jpa.HibernateProperties.determineDdlAuto(HibernateProperties.java:136) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.autoconfigure.orm.jpa.HibernateProperties.getAdditionalProperties(HibernateProperties.java:102) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.autoconfigure.orm.jpa.HibernateProperties.determineHibernateProperties(HibernateProperties.java:94) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration.getVendorProperties(HibernateJpaConfiguration.java:132) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.entityManagerFactory(JpaBaseConfiguration.java:133) ~[spring-boot-autoconfigure-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
        at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:640) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:625) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1338) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1108) ~[spring-context-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868) ~[spring-context-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
        at com.ensa.productmanager.ProductManagerApplication.main(ProductManagerApplication.java:10) ~[classes!/:0.0.1-SNAPSHOT]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
        at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) ~[app.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) ~[app.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:51) ~[app.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52) ~[app.jar:0.0.1-SNAPSHOT]

我一整天都在调试和阅读有关此错误的线程。但我找不到线索。任何帮助都感激不尽。

更新

我在 Postgres 容器上运行了docker inspect：

[
    
        "Id": "426744f8c0a90b504c4d7c22242929f4b7f833e3ff4ddb9a112139d18ffd7c10",
        "Created": "2020-01-16T19:14:14.7290504Z",
        "Path": "docker-entrypoint.sh",
        "Args": [
            "postgres"
        ],
        "State": 
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 8057,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2020-01-16T19:14:15.5451891Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        ,
        "Image": "sha256:e2d75d1c1264a777df31dcbd4fd452b238134eb27854c2a173fdbfaa47ce9b87",
        "ResolvConfPath": "/var/lib/docker/containers/426744f8c0a90b504c4d7c22242929f4b7f833e3ff4ddb9a112139d18ffd7c10/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/426744f8c0a90b504c4d7c22242929f4b7f833e3ff4ddb9a112139d18ffd7c10/hostname",
        "HostsPath": "/var/lib/docker/containers/426744f8c0a90b504c4d7c22242929f4b7f833e3ff4ddb9a112139d18ffd7c10/hosts",
        "LogPath": "/var/lib/docker/containers/426744f8c0a90b504c4d7c22242929f4b7f833e3ff4ddb9a112139d18ffd7c10/426744f8c0a90b504c4d7c22242929f4b7f833e3ff4ddb9a112139d18ffd7c10-json.log",
        "Name": "/lil-postgres",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "",
        "ExecIDs": null,
        "HostConfig": 
            "Binds": [
                "/Users/hamzabelmellouki/srv/postgres:/var/lib/postgresql/data"
            ],
            "ContainerIDFile": "",
            "LogConfig": 
                "Type": "json-file",
                "Config": 
            ,
            "NetworkMode": "default",
            "PortBindings": 
                "5432/tcp": [
                    
                        "HostIp": "",
                        "HostPort": "5432"
                    
                ]
            ,
            "RestartPolicy": 
                "Name": "no",
                "MaximumRetryCount": 0
            ,
            "AutoRemove": true,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "Capabilities": null,
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "private",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "ConsoleSize": [
                0,
                0
            ],
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": [],
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "KernelMemory": 0,
            "KernelMemoryTCP": 0,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": null,
            "OomKillDisable": false,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": [
                "/proc/asound",
                "/proc/acpi",
                "/proc/kcore",
                "/proc/keys",
                "/proc/latency_stats",
                "/proc/timer_list",
                "/proc/timer_stats",
                "/proc/sched_debug",
                "/proc/scsi",
                "/sys/firmware"
            ],
            "ReadonlyPaths": [
                "/proc/bus",
                "/proc/fs",
                "/proc/irq",
                "/proc/sys",
                "/proc/sysrq-trigger"
            ]
        ,
        "GraphDriver": 
            "Data": 
                "LowerDir": "/var/lib/docker/overlay2/baabe07f985a61979a3752f7e3c43116b980c45682d27c660b2867a6af3da28b-init/diff:/var/lib/docker/overlay2/ac6700580b74ace6c2f4eb9c274ef405124afb8019948c51516b496ed62eae8d/diff:/var/lib/docker/overlay2/35c484f8059617661ae54f749d0b938e7d81bc2089dd81ef81952aed6079c30b/diff:/var/lib/docker/overlay2/1649505946cf497fd95a5b7a118150a09315767464671f93459e3324f8e5ac42/diff:/var/lib/docker/overlay2/69a4818765c800f405e11c7755e184e4fd0837b68b4664821cf9c80daa7b629b/diff:/var/lib/docker/overlay2/177d3596510c3fdb235ec84728b8b6baf23a406dca3e9a3bfb45e98b48fe2395/diff:/var/lib/docker/overlay2/07d15f6f98f43ff88e6bdf9e361fadaaa46f83121278b5dbddac372cb95d99b8/diff:/var/lib/docker/overlay2/5e10c2001ef13459900f124ae825c210e2e001b0aa2f8b5e1e7c8c5c27d9e403/diff:/var/lib/docker/overlay2/b1e7828ebe991a7401746f581fd640bca3ae74f3a9820fd15e0fb2c666a08754/diff:/var/lib/docker/overlay2/e1b274467493537d29e25cce71acf9c3020d8a2e25080c75aa0fca10a5c05789/diff:/var/lib/docker/overlay2/11141fed542b6c519ec7621e0c4f341d2b2822a7c2885980216a2ef27609ffe0/diff:/var/lib/docker/overlay2/c3e4e9634bfe6a9e4b26f3d2d5751b2fa01aae0e8e1679a800accd94179d527d/diff:/var/lib/docker/overlay2/e7da8a834521c827046a2dc64f6f39afa6fded7f1af3241c75c592756d3053d6/diff:/var/lib/docker/overlay2/91d22f9b7d3aa1fae5cabcfe245a18c7dc6ac372696c73be70b65f7c8b42f1f4/diff:/var/lib/docker/overlay2/1a2021467ef42428eda11a9aef133e4b7ee9364266255abe5a0f2df4a9ff2584/diff",
                "MergedDir": "/var/lib/docker/overlay2/baabe07f985a61979a3752f7e3c43116b980c45682d27c660b2867a6af3da28b/merged",
                "UpperDir": "/var/lib/docker/overlay2/baabe07f985a61979a3752f7e3c43116b980c45682d27c660b2867a6af3da28b/diff",
                "WorkDir": "/var/lib/docker/overlay2/baabe07f985a61979a3752f7e3c43116b980c45682d27c660b2867a6af3da28b/work"
            ,
            "Name": "overlay2"
        ,
        "Mounts": [
            
                "Type": "bind",
                "Source": "/Users/hamzabelmellouki/srv/postgres",
                "Destination": "/var/lib/postgresql/data",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            
        ],
        "Config": 
            "Hostname": "426744f8c0a9",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": 
                "5432/tcp": 
            ,
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "POSTGRES_USER=hamzabelmellouki",
                "POSTGRES_PASSWORD=password",
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/lib/postgresql/11/bin",
                "GOSU_VERSION=1.11",
                "LANG=en_US.utf8",
                "PG_MAJOR=11",
                "PG_VERSION=11.5-1.pgdg90+1",
                "PGDATA=/var/lib/postgresql/data"
            ],
            "Cmd": [
                "postgres"
            ],
            "Image": "postgres",
            "Volumes": 
                "/var/lib/postgresql/data": 
            ,
            "WorkingDir": "",
            "Entrypoint": [
                "docker-entrypoint.sh"
            ],
            "OnBuild": null,
            "Labels": 
        ,
        "NetworkSettings": 
            "Bridge": "",
            "SandboxID": "2649b309ebde1f690927a1081497c9dc05dc249642b429f25d930243eb81e08f",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": 
                "5432/tcp": [
                    
                        "HostIp": "0.0.0.0",
                        "HostPort": "5432"
                    
                ]
            ,
            "SandboxKey": "/var/run/docker/netns/2649b309ebde",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "f01f60128018d8634f26a0c683ee6865e20361548b3a49007804dc913bfc4292",
            "Gateway": "172.17.0.1",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "172.17.0.2",
            "IPPrefixLen": 16,
            "IPv6Gateway": "",
            "MacAddress": "02:42:ac:11:00:02",
            "Networks": 
                "bridge": 
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "045d48c0f1d22cb7c319d6e850f6e9985a08e6d08884a79e823dbd0ac6c8a1b9",
                    "EndpointID": "f01f60128018d8634f26a0c683ee6865e20361548b3a49007804dc913bfc4292",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:02",
                    "DriverOpts": null
                
            
        
    
]

【问题讨论】：

你确定你提供给你的 spring 应用程序的 postgres 凭据是正确的吗？

是的，正如我在不使用 docker 运行应用程序时提到的（使用 java -jar app.jar 或 mvn spring-boot:run）。 spring 应用运行良好。

您在哪里配置数据库的位置和凭据？我在您显示的 docker run 命令中的任何地方都没有提到这一点。

【参考方案1】：

也许，您可以使用 docker-compose 来定义和运行多容器 docker 应用程序（postgres+spring-boot），并使用 YAML 文件来配置您的应用程序的服务。

因此，您必须创建具有不同路径的新卷以插入具有新架构和配置的新数据，因为如果您使用之前已经使用过的卷，您会发现用户“hamzabelmellouki”的密码验证失败等问题 或者用户（角色）“hamzabelmellouki”不存在或数据库“数据库名称”不存在，因为他们之前创建了其他用户。

#####docker-compose.yml#####
version: '3'

services:
  db:
    image: postgres
    container_name: lil-postgres
    ports:
      - "5432:5432"
    restart: unless-stopped
    volumes:
      - "./postgres/data:/var/lib/postgresql/data"
    environment:
      POSTGRES_USER: hamzabelmellouki
      POSTGRES_PASSWORD: password
      POSTGRES_DB: hamzabelmellouki
    networks:
      - product-net

  product:
    image: ensa/product-manager
    restart: unless-stopped
    ports:
      - "8080:8080"
    depends_on:
      - db
    networks:
      - product-net

networks:
  product-net:
    driver: bridge
volumes:
  db:
    driver: local

【参考方案2】：

试试下面：

在运行 Postgres 容器时，您没有提供任何用户名，它应该是这样的：

docker run --rm --net="host" --name lil-postgres -e POSTGRES_USER=hamzabelmellouki -e POSTGRES_PASSWORD=password -d -v $ HOME/srv/postgres:/var/lib/postgresql/data -p 5432:5432 postgres:9.6

默认情况下 Postgres 容器将在 bridge network（默认 docker 网络）中运行，并且在您的应用中，您提供了 --net="host" 所以也许正因为如此，他们无法沟通。 在运行两者时提供相同的网络

您可以通过以下命令检查它

docker inspect container_name（或 container_id）

这无关紧要，不过，我已经更新了 docker 镜像标签 (Postgres:9.6)，因为使用特定标签名称而不是默认标签名称（最新标签）总是好的。

【讨论】：

建议的解决方案都不起作用！我相信 app 容器无法与 db 容器通信。我已经尝试了很多方法来实现通信。请问还有什么建议吗？

关于第二个建议，它不起作用。运行 docker run -it ensa/product-manager 会产生另一个异常：org.postgresql.util.PSQLException: Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.

docker run -it ensa/product-manager 这还不够，你需要运行上面我提到的命令。从 docker 命令中删除 --net="host" 并尝试。或先输入docker network create test，然后从主机更新网络名称以在两个docker命令中进行测试

不幸的是，我尝试在同一主机上运行它们，但它不起作用：org.postgresql.util.PSQLException: FATAL: role "hamzabelmellouki" does not exist

【参考方案3】：

尝试通过 application.properties spring.datasource.url=jdbc:postgresql://172.17.0.2:5432/testdb 中的 ip 地址 172.17.0.2 更改 localhost