Spring boot app not connecting with postgres DA via docker compose - postgresql

Question

I am trying to run a simple spring boot app with PostgreSQL via docker-compose.
Here is my docker-compose.yml file
version: "3.9"
services:
persons-java-api:
container_name: persons-java-api
build: .
ports:
- "8081:8081"
depends_on:
- persons-db-service
persons-db-service:
container_name: persons-db-service
image: postgres:14.4
environment:
- POSTGRES_USER:postgres
- POSTGRES_PASSWORD:123456
- POSTGRES_DB:persons-db
ports:
- "5432:5432"
Spring application Dockerfile
FROM openjdk:11
WORKDIR /service
COPY target/person-0.0.1-SNAPSHOT.jar /service/app.jar
CMD ["java", "-jar", "app.jar"]
And here is the application.properties file of the spring app
server.port=8081
spring.application.name=person
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:postgresql://persons-db-service:5432/persons-db
spring.datasource.username=postgres
spring.datasource.password=123456
#spring.h2.console.enabled=true
spring.jpa.properties.hibernate.format-sql=true
when I run docker-compose up it fails with the following error
Attaching to persons-db-service, persons-java-api
persons-db-service | Error: Database is uninitialized and superuser password is not specified.
persons-db-service | You must specify POSTGRES_PASSWORD to a non-empty value for the
persons-db-service | superuser. For example, "-e POSTGRES_PASSWORD=password" on "docker run".
persons-db-service |
persons-db-service | You may also use "POSTGRES_HOST_AUTH_METHOD=trust" to allow all
persons-db-service | connections without a password. This is *not* recommended.
persons-db-service |
persons-db-service | See PostgreSQL documentation about "trust":
persons-db-service | https://www.postgresql.org/docs/current/auth-trust.html
persons-db-service exited with code 1Attaching to persons-db-service, persons-java-api
persons-db-service | Error: Database is uninitialized and superuser password is not specified.
persons-db-service | You must specify POSTGRES_PASSWORD to a non-empty value for the
persons-db-service | superuser. For example, "-e POSTGRES_PASSWORD=password" on "docker run".
persons-db-service |
persons-db-service | You may also use "POSTGRES_HOST_AUTH_METHOD=trust" to allow all
persons-db-service | connections without a password. This is *not* recommended.
persons-db-service |
persons-db-service | See PostgreSQL documentation about "trust":
persons-db-service | https://www.postgresql.org/docs/current/auth-trust.html
persons-db-service exited with code 1
org.postgresql.util.PSQLException: The connection attempt failed.
persons-java-api | at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:331) ~[postgresql-42.3.5.jar!/:42.3.5]
persons-java-api | at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49) ~[postgresql-42.3.5.jar!/:42.3.5]
persons-java-api | at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:223) ~[postgresql-42.3.5.jar!/:42.3.5]
persons-java-api | at org.postgresql.Driver.makeConnection(Driver.java:402) ~[postgresql-42.3.5.jar!/:42.3.5]
persons-java-api | at org.postgresql.Driver.connect(Driver.java:261) ~[postgresql-42.3.5.jar!/:42.3.5]
persons-java-api | at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-4.0.3.jar!/:na]
persons-java-api | at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:364) ~[HikariCP-4.0.3.jar!/:na]
persons-java-api | at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) ~[HikariCP-4.0.3.jar!/:na]
persons-java-api | at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:476) ~[HikariCP-4.0.3.jar!/:na]
persons-java-api | at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561) ~[HikariCP-4.0.3.jar!/:na]
persons-java-api | at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-4.0.3.jar!/:na]
persons-java-api | at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-4.0.3.jar!/:na]
persons-java-api | at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~[hibernate-core-5.6.9.Final.jar!/:5.6.9.Final]
persons-java-api | at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:181) ~[hibernate-core-5.6.9.Final.jar!/:5.6.9.Final]
persons-java-api | Caused by: java.net.UnknownHostException: persons-db
persons-java-api | at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:229) ~[na:na]
persons-java-api | at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:na]
persons-java-api | at java.base/java.net.Socket.connect(Socket.java:609) ~[na:na]
persons-java-api | at org.postgresql.core.PGStream.createSocket(PGStream.java:241) ~[postgresql-42.3.5.jar!/:42.3.5]
persons-java-api | at org.postgresql.core.PGStream.<init>(PGStream.java:98) ~[postgresql-42.3.5.jar!/:42.3.5]
persons-java-api | at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:109) ~[postgresql-42.3.5.jar!/:42.3.5]
persons-java-api | at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:235) ~[postgresql-42.3.5.jar!/:42.3.5]
persons-java-api | ... 57 common frames omitted
Can someone kindly what I am doing incorrectly here?

Answer 1

Seems that i have to also add spring.datsource.url to compose file
spring.datasource.url=jdbc:postgresql://persons-db-service:5432/persons-db
whole working compose file is
version: "3.9"
services:
persons-java-api:
container_name: persons-java-api
build: .
ports:
- "8081:8081"
environment:
- spring.datasource.url=jdbc:postgresql://persons-db-service:5432/persons-db
depends_on:
- persons-db-service
persons-db-service:
container_name: persons-db-service
image: postgres:${POSTGRES_VERSION}
volumes:
- ./db:/var/lib/postgresql/data
environment:
- POSTGRES_USER=${DB_USER}
- POSTGRES_PASSWORD=${DB_USER_PASSWORD}
- POSTGRES_DB=${DB_NAME}
ports:
- "5432:5432"
The environment variable are coming from .env file