Dockerization of SpringBoot-Microservice, + Angular + MySQL + RabbitMQ - spring

Question

I'm learning docker. While deploying my application(Angular, SpringBoot, RabbitMQ, MySQL), I'm able to access UI, but services are getting failed due to connection error between services and MySQL and RabbitMq. But individually I'm able to access both MySql and RabbitMq through docker exec command also tables and queues are getting generating while docker-compose up. But while testing, its not working
docker-compose.yml
version: '3.1'
services:
rabbitmq:
image: rabbitmq:management
ports:
- 5672:5672
- 15672:15672
mysql:
image: mysql:8.0.17
ports:
- 3306:3306
environment:
MYSQL_DATABASE: stackroute
MYSQL_ROOT_PASSWORD: password
MYSQL_USER: cmatches
MYSQL_PASSWORD: cmatches
user-app:
image: userservice
build: userservice/
ports:
- 9100:9100
depends_on:
- mysql
network_mode: "host"
fav-app:
image: favouriteservice
build: favouriteservice/
ports:
- 9200:9200
depends_on:
- mysql
- rabbitmq
network_mode: "host"
rec-app:
image: matchrecommendationservice
build: matchrecommendationservice/
ports:
- 9300:9300
depends_on:
- mysql
- rabbitmq
network_mode: "host"
cmatches-ui:
build: CMatchesUI/
container_name: cmatchesUi
ports:
- 4200:4200
Individual dockerfile is working fine.
Error:
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
Do I need to change something in application.properties
server.port=9200
spring.datasource.url=jdbc:mysql://localhost:3306/stackroute?verifyServerCertificate=false&useSSL=false&requireSSL=false&allowPublicKeyRetrieval=true
spring.datasource.username=root
spring.datasource.password=password
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
spring.jpa.hibernate.ddl-auto = update
spring.rabbitmq.host=localhost
spring.rabbitmq.port=5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
spring.cloud.stream.bindings.recommendedMatchesChannel.destination=recommendedMatches
spring.cloud.stream.default.contentType=application/json
=========================================================================
Updates:
1.
Tried changing
spring.datasource.url=jdbc:mysql://mysql:3306/stackroute?verifyServerCertificate=false&useSSL=false&requireSSL=false&allowPublicKeyRetrieval=true
Got following error :
Caused by: java.net.UnknownHostException: mysql
-Reverted-
2.
Removed network_mode: host
got following error
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
user-app_1 |
user-app_1 | The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
user-app_1 | at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:827) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:447) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:237) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:136) ~[HikariCP-3.2.0.jar!/:na]
user-app_1 | at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:369) ~[HikariCP-3.2.0.jar!/:na]
user-app_1 | at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:198) ~[HikariCP-3.2.0.jar!/:na]
user-app_1 | at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:467) [HikariCP-3.2.0.jar!/:na]
user-app_1 | at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:541) [HikariCP-3.2.0.jar!/:na]
user-app_1 | at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) [HikariCP-3.2.0.jar!/:na]
user-app_1 | at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) [HikariCP-3.2.0.jar!/:na]
user-app_1 | at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:68) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:94) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:179) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:119) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:904) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:935) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
user-app_1 | at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:57) [spring-orm-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) [spring-orm-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:390) [spring-orm-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:377) [spring-orm-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) [spring-orm-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1804) [spring-beans-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1741) [spring-beans-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576) [spring-beans-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) [spring-beans-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) [spring-beans-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) [spring-beans-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) [spring-beans-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1083) ~[spring-context-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:853) ~[spring-context-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) ~[spring-context-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
user-app_1 | at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
user-app_1 | at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) ~[spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
user-app_1 | at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
user-app_1 | at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) ~[spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
user-app_1 | at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) ~[spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
user-app_1 | at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) ~[spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
user-app_1 | at com.stackroute.userservice.UserServiceApplication.main(UserServiceApplication.java:10) ~[classes!/:1.0]
user-app_1 | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_111]
user-app_1 | at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_111]
user-app_1 | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_111]
user-app_1 | at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_111]
user-app_1 | at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) ~[userservice-1.0.jar:1.0]
user-app_1 | at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) ~[userservice-1.0.jar:1.0]
user-app_1 | at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) ~[userservice-1.0.jar:1.0]
user-app_1 | at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) ~[userservice-1.0.jar:1.0]
user-app_1 | Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure
user-app_1 |
user-app_1 | The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
user-app_1 | at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_111]
user-app_1 | at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_111]
user-app_1 | at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_111]
user-app_1 | at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_111]
user-app_1 | at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.NativeSession.connect(NativeSession.java:150) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:947) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:817) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | ... 57 common frames omitted
user-app_1 | Caused by: java.net.ConnectException: Connection refused (Connection refused)
user-app_1 | at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_111]
user-app_1 | at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_111]
user-app_1 | at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_111]
user-app_1 | at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_111]
user-app_1 | at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_111]
user-app_1 | at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_111]
user-app_1 | at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
user-app_1 | ... 60 common frames omitted

Answer 1

You can't use localhost as the host name since the applications are run in a docker container. Also, to communicate each other, all the containers should be in the same docker network;
version: '3.1'
services:
rabbitmq:
image: rabbitmq:management
container_name: rabbitmq
ports:
- 5672:5672
- 15672:15672
networks:
- my-net
mysql:
image: mysql:8.0.17
container_name: mysql
ports:
- 3306:3306
environment:
MYSQL_DATABASE: stackroute
MYSQL_ROOT_PASSWORD: password
MYSQL_USER: cmatches
MYSQL_PASSWORD: cmatches
networks:
- my-net
user-app:
image: userservice
build: userservice/
container_name: userapp
ports:
- 9100:9100
depends_on:
- mysql
networks:
- my-net
fav-app:
image: favouriteservice
build: favouriteservice/
container_name: favapp
ports:
- 9200:9200
depends_on:
- mysql
- rabbitmq
networks:
- my-net
rec-app:
image: matchrecommendationservice
build: matchrecommendationservice/
container_name: recapp
ports:
- 9300:9300
depends_on:
- mysql
- rabbitmq
networks:
- my-net
cmatches-ui:
build: CMatchesUI/
container_name: cmatchesUi
ports:
- 4200:4200
networks:
- my-net
networks:
my-net:
Replace host name in all places to their respective container names like this;
server.port=9200
spring.datasource.url=jdbc:mysql://mysql:3306/stackroute?verifyServerCertificate=false&useSSL=false&requireSSL=false&allowPublicKeyRetrieval=true
spring.datasource.username=root
spring.datasource.password=password
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
spring.jpa.hibernate.ddl-auto = update
spring.rabbitmq.host=rabbitmq
spring.rabbitmq.port=5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
spring.cloud.stream.bindings.recommendedMatchesChannel.destination=recommendedMatches
spring.cloud.stream.default.contentType=application/json

Answer 2

I think this is because you use network_mode = host
This means that you would like to "reuse" the namespace from the underlying host network.
Try to use the default "bridge" mode so that docker will create a "virtual network" between the containers.
This bridge mode is the default one, so just remove the line network_mode: "host" from the docker compose file.
Here is one nice tutorial that descibes docker network support at the high level.