[英]Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections
I'm getting the below error while giving docker-compose up.在放弃 docker-compose 时出现以下错误。
springbootapp | 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.
springbootapp | at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:280) ~[postgresql-42.2.8.jar!/:42.2.8]
springbootapp | at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49) ~[postgresql-42.2.8.jar!/:42.2.8]
springbootapp | at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:195) ~[postgresql-42.2.8.jar!/:42.2.8]
springbootapp | at org.postgresql.Driver.makeConnection(Driver.java:458) ~[postgresql-42.2.8.jar!/:42.2.8]
springbootapp | at org.postgresql.Driver.connect(Driver.java:260) ~[postgresql-42.2.8.jar!/:42.2.8]
springbootapp | at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.2.jar!/:na]
springbootapp | at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) ~[HikariCP-3.4.2.jar!/:na]
springbootapp | at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) ~[HikariCP-3.4.2.jar!/:na]
springbootapp | at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) [HikariCP-3.4.2.jar!/:na]
springbootapp | at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554) [HikariCP-3.4.2.jar!/:na]
springbootapp | at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) [HikariCP-3.4.2.jar!/:na]
springbootapp | at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) [HikariCP-3.4.2.jar!/:na]
springbootapp | at org.flywaydb.core.internal.jdbc.JdbcUtils.openConnection(JdbcUtils.java:56) [flyway-core-6.0.8.jar!/:na]
springbootapp | at org.flywaydb.core.internal.jdbc.JdbcConnectionFactory.<init>(JdbcConnectionFactory.java:80) [flyway-core-6.0.8.jar!/:na]
springbootapp | at org.flywaydb.core.Flyway.execute(Flyway.java:438) [flyway-core-6.0.8.jar!/:na]
springbootapp | at org.flywaydb.core.Flyway.migrate(Flyway.java:149) [flyway-core-6.0.8.jar!/:na]
springbootapp | at org.springframework.boot.autoconfigure.flyway.FlywayMigrationInitializer.afterPropertiesSet(FlywayMigrationInitializer.java:65) [spring-boot-autoconfigure-2.2.6.RELEASE.jar!/:2.2.6.RELEASE]
Dockerfile: Dockerfile:
FROM openjdk:8-jdk-alpine
VOLUME /tmp
EXPOSE 8082
RUN mkdir -p /app/
RUN mkdir -p /app/logs/
ADD target/household-0.0.1-SNAPSHOT.jar /app/app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-Dspring.profiles.active=container", "-jar", "/app/app.jar"]
docker-compose.yml: docker-compose.yml:
version: '3.2'
services:
postgres:
image: postgres:latest
network_mode: bridge
container_name: postgres
volumes:
- postgres-data:/var/lib/postgresql/data
expose:
- 5432
ports:
- 5434:5434
environment:
- POSTGRES_PASSWORD=
- POSTGRES_USER=
- POSTGRES_DB=test
restart: unless-stopped
# APP*****
springbootapp:
image: springbootapp:latest
network_mode: bridge
container_name: springbootapp
expose:
- 8080
ports:
- 8080:8080
restart: unless-stopped
depends_on:
- postgres
links:
- postgres
volumes:
postgres-data:
The error is definitely due to postgres is not running correctly or the app is not able to communicate to postgres.该错误肯定是由于 postgres 未正确运行或应用程序无法与 postgres 通信。 Use below docker-compose file and check.使用下面的 docker-compose 文件并检查。
version: '2'
services:
postgresql:
image: postgres:10.4
volumes:
- ./postgresql/:/var/lib/postgresql/data/
environment:
- POSTGRES_USER=someuser
- POSTGRES_PASSWORD=
ports:
- 5432:5432
You can always use following command to check if db is accepting connection.您始终可以使用以下命令来检查 db 是否正在接受连接。
psql -h [HostIP] -U [db_user] -d [db_name]
I had same problem.我有同样的问题。 the solution is simple.解决方案很简单。
in Terminal process;在终端过程中;
then you have to go to the directory where the docker-compose.yml
然后你必须将 go 到docker-compose.yml
所在的目录
file is located.文件位于。
then write docker-compose up
然后docker-compose up
next, open pgAdmin app and choose db to your spring project,接下来,打开 pgAdmin 应用程序并选择 db 到您的 spring 项目,
next, enter the password and username found in docker-compose.yml
(username: image , password: POSTGRES_PASSWORD ),接下来,输入在docker-compose.yml
中找到的密码和用户名(用户名: image ,密码: POSTGRES_PASSWORD ),
finally run the spring boot project.最后运行 spring 引导项目。
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