docker-compse.yml spring boot mysql configuration [duplicate] - mysql

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This question already has an answer here:
Configuring Spring boot Docker and Mysql
(1 answer)
Closed 3 years ago.
I have been trying to configure docker for my spring boot application with MySQL. But, I keep getting communications link failure error after running
docker compose up
Here's a snapshot of the error
spring-batch_1 | 2019-11-14 06:23:43.713 INFO 1 --- [ main]
com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
spring-batch_1 | 2019-11-14 06:23:43.918 ERROR 1 --- [ main]
com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Exception during pool
initialization.
spring-batch_1 |
spring-batch_1 | com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link
failure
spring-batch_1 |
spring-batch_1 | The last packet sent successfully to the server was 0 milliseconds ago. The
driver has not received any packets from the server.
spring-batch_1 | at
com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) ~[ .
mysql-connector-java-8.0.18.jar!/:8.0.18]
spring-batch_1 | at
com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException
(SQLExceptionsMapping.java:64 ) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
spring-batch_1 | at
com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836) ~[mysql-connector-java-
8.0.18.jar!/:8.0.18]
spring-batch_1 | at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456) ~
[mysql-connector-java-8.0.18.jar!/:8.0.18]
spring-batch_1 | at
com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246) ~[mysql-connector-java-
8.0.18.jar!/:8.0.18]
spring-batch_1 | at
com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) ~[mysql-
connector-java-8.0.18.jar!/:8.0.18]
spring-batch_1 | at
com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-
3.4.1.jar!/:na]
spring-batch_1 | at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:353) ~
[HikariCP-3.4.1.jar!/:na]
spring-batch_1 | at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201) ~
[HikariCP-3.4.1.jar!/:na]
spring-batch_1 | at
com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) ~[HikariCP-
3.4.1.jar!/:na]
spring-batch_1 | at
com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:562) ~[HikariCP-
3.4.1.jar!/:na]
spring-batch_1 | at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~ .
[HikariCP-3.4.1.jar!/:na]
spring-batch_1 | at
com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-
3.4.1.jar!/:na]
spring-batch_1 | at
com.zaxxer.hikari.HikariDataSource$$FastClassBySpringCGLIB$$eeb1ae86.invoke(<generated>) ~ .
[HikariCP-3.4.1.jar!/:na]
spring-batch_1 | at
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-
5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
spring-batch_1 | at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint
(CglibAopProxy.java:769) ~[spring-aop-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
spring-batch_1 | at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed
(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
spring-batch_1 | at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed
(CglibAopProxy.java:747) ~[spring-aop-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
spring-batch_1 | at
org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed
(DelegatingIntroductionInterceptor.java:136) ~[spring-aop-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
Here's my docker-compose.yml file
version: "3.3"
services:
mysql:
restart: always
image: mysql:latest
ports:
- 6033:3306
expose:
- 6033
volumes:
- db_data:/var/lib/mysql
environment:
- MYSQL_ROOT_PASSWORD=root#123
- MYSQL_DATABASE=micro_services
- MYSQL_USER=root
- MYSQL_PASSWORD=root#123
spring-batch:
restart: always
image: ioesandeep/product-service:0.0.1-SNAPSHOT
ports:
- "8082:8082"
environment:
SPRING_DATASOURCE_URL: jdbc:mysql://127.0.0.1:6033/micro_services
SPRING_DATASOURCE_USERNAME: root
SPRING_DATASOURCE_PASSWORD: root#123
SPRING_JPA_DATABASE: mysql
depends_on:
- mysql
volumes:
db_data: {}
and here's my dockerfile which is used to build my spring-batch image
FROM openjdk:11-jdk
VOLUME /tmp
ARG JAR_FILE
ADD ${JAR_FILE} product.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/product.jar"]
I am using dockerfile-maven-plugin from com.spotify to build the image.
Here's my application.properties file for the spring boot and hibernate
spring.application.name=product
server.port=8082
spring.jpa.hibernate.ddl-auto=create-drop
spring.datasource.url=jdbc:mysql://127.0.0.1:6033/micro_services
spring.datasource.username=root
spring.datasource.password=root#123
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.database=mysql
spring.batch.initialize-schema=always
spring.batch.job.enabled=false
Docker version 18.09.2, build 6247962
mysql Ver 8.0.18 for macos10.14 on x86_64 (MySQL Community Server - GPL)
Images
mysql latest c8ee894bd2bd 4 weeks ago
openjdk 11-jdk a7e47afa852b 3 weeks ago
I have tried a lot many configurations for the docker-compose file but every time I get the same error. I am not sure what am I missing in the configuration. I have been trying to get this up for over 2 days now. I would really appreciate a quick help.
Thanks

Answer 1

You have your SPRING_DATASOURCE_URL as localhost (127.0.0.1):
SPRING_DATASOURCE_URL: jdbc:mysql://127.0.0.1:6033/micro_services
Which as far as your spring-batch container is concerned is itself NOT the host machine so it will not be able to connect.
You will need to change it to reference the mysql container like:
SPRING_DATASOURCE_URL: jdbc:mysql://mysql:6033/micro_services