Docker starts only temporary MySQL server - mysql

Question

I try to learn how connect Spring App with MySQL using docker-compose.
I've got the following issue:
spring-db | 2020-03-24 13:18:50+01:00 [Note] [Entrypoint]: Temporary server started.
spring-db | 2020-03-24T12:18:50.676560Z 0 [System] [MY-011323] [Server] X Plugin ready for connections. Socket: '/var/run/mysqld/mysqlx.sock'
spring-db | Warning: Unable to load '/usr/share/zoneinfo/iso3166.tab' as time zone. Skipping it.
spring-db | Warning: Unable to load '/usr/share/zoneinfo/leap-seconds.list' as time zone. Skipping it.
spring-db | Warning: Unable to load '/usr/share/zoneinfo/zone.tab' as time zone. Skipping it.
spring-db | Warning: Unable to load '/usr/share/zoneinfo/zone1970.tab' as time zone. Skipping it.
spring-db | 2020-03-24 13:18:54+01:00 [Note] [Entrypoint]: Creating database spring-db
spring-db | 2020-03-24 13:18:54+01:00 [Note] [Entrypoint]: Creating user spring-db
spring-db | 2020-03-24 13:18:54+01:00 [Note] [Entrypoint]: Giving user spring-db access to schema spring-db
spring-db |
spring-db | 2020-03-24 13:18:54+01:00 [Note] [Entrypoint]: /usr/local/bin/docker-entrypoint.sh: running /docker-entrypoint-initdb.d/spring-db.sql
spring-db |
spring-db |
spring-db | 2020-03-24 13:18:55+01:00 [Note] [Entrypoint]: Stopping temporary server
spring-db | 2020-03-24T12:18:55.410358Z 15 [System] [MY-013172] [Server] Received SHUTDOWN from user root. Shutting down mysqld (Version: 8.0.19).
spring-db | 2020-03-24T12:18:57.128567Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.19) MySQL Community Server - GPL.
spring-db | 2020-03-24 13:18:57+01:00 [Note] [Entrypoint]: Temporary server stopped
spring-db |
spring-db | 2020-03-24 13:18:57+01:00 [Note] [Entrypoint]: MySQL init process done. Ready for start up.
Therefore I received following error:
spring-app | 2020-03-24 12:19:11.993 ERROR 1 --- [nio-8080-exec-9] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.transaction.CannotCreateTransactionException: Could not open JPA EntityManager for transaction; nested exception is org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection] with root cause
spring-app |
spring-app | java.net.ConnectException: Connection refused (Connection refused)
Has anyone met a similar problem?
Thank you in advance for your help.

Answer 1

I found I made many mistakes.
Firstly configuration
Configuration
#ComponentScan("SpringAndDocker")
#EnableJpaRepositories("SpringAndDocker.repository")
public class ApplicationConfig {
#Value("${db.driver}")
private String databaseDriver;
#Value("${db.password}")
private String databasePassword;
#Value("${db.url}")
private String databaseUrl;
#Value("${db.username}")
private String databaseUsername;
#Value("${hibernate.dialect}")
private String hibernateDialect;
#Value("${hibernate.show_sql}")
private String hibernateShowSql;
private static final String PROPERTY_NAME_ENTITYMANAGER_PACKAGES_TO_SCAN = "entitymanager.packages.to.scan";
#Resource
private Environment env;
#Bean
public DataSource dataSource()
{
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(databaseDriver);
dataSource.setUrl(databaseUrl);
dataSource.setUsername(databaseUsername);
dataSource.setPassword(databasePassword);
return dataSource;
}
#Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory()
{
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource());
entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
entityManagerFactoryBean.setPackagesToScan(env.getRequiredProperty(PROPERTY_NAME_ENTITYMANAGER_PACKAGES_TO_SCAN));
entityManagerFactoryBean.setJpaProperties(hibProperties());
return entityManagerFactoryBean;
}
private Properties hibProperties()
{
Properties properties = new Properties();
properties.put("hibernate.dialect", hibernateDialect);
properties.put("hibernate.show_sql", hibernateShowSql);
return properties;
}
#Bean
public JpaTransactionManager transactionManager()
{
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory().getObject());
return transactionManager;
}
}
Secondly docker-compose.yaml
db:
image: library/postgres:alpine
restart: always
hostname: spring-db
container_name: spring-db
volumes:
- /etc/localtime:/etc/localtime:ro
- ./docker/db/spring-db.sql:/docker-entrypoint-initdb.d/spring-db.sql:ro
- ./docker/db/spring-db.sql:/opt/db/spring-db.sql
environment:
- MYSQL_ROOT_PASSWORD=none
- MYSQL_DATABASE=spring-db
networks:
- spring
The hostname above is spring-db. But according to application.properties
# Database related properties
db.driver=com.mysql.jdbc.Driver
db.url=jdbc:mysql://localhost:5432/spring-db
db.username=mysql
db.password=none
# Hibernate related properties
hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
hibernate.show_sql=false
entitymanager.packages.to.scan=pl.insudi.model
spring.main.allow-bean-definition-overriding=true
I tried to connect to localhost instead of spring-db.
That was the reason - I should have used the same hostname as in docker-compose.
Also to connect Hibernate properly I needed to use
db.url=jdbc:mysql://insudi-db:3306/insudi-db?allowPublicKeyRetrieval=true&useSSL=false