docker-compose spring boot cannot connect to mysql

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docker-compose spring boot cannot connect to mysql

当我只包含MySQL的docker-compose文件并且在Intellij或.jar文件中运行应用程序时,它可以正常工作,但是当我尝试使用docker compose运行时,我遇到了以下错误:

com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

我的dockerfile文件:

FROM adoptopenjdk/openjdk13
ADD ./build/libs/AppointmentsSystem-0.0.1-SNAPSHOT.jar app.jar
ENTRYPOINT exec java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar

我的docker-compose.yml文件:

version: "3"

services:

app:

build:

dockerfile: Dockerfile

context: .

ports:

- 8081:8081

depends_on:

- mysql

mysql:

image: mysql:5.7

volumes:

- ./mysql_data:/var/lib/mysql

environment:

MYSQL_ROOT_PASSWORD: rootpassword

MYSQL_DATABASE: appointmentSystem

ports:

- 3308:3306

build.gradle文件:

plugins {
    id 'org.springframework.boot' version '2.2.1.RELEASE'
    id 'io.spring.dependency-management' version '1.0.8.RELEASE'
    id 'java'
}
group = 'com.sulimanLab'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '13'
configurations {
    compileOnly {
        extendsFrom annotationProcessor
    }
}
repositories {
    mavenCentral()
}
wrapper {
    gradleVersion = "6.0"
}
dependencies {
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-jpa'
    compile group: 'mysql', name: 'mysql-connector-java'
    compileOnly 'org.projectlombok:lombok'
    annotationProcessor 'org.projectlombok:lombok'
    testImplementation('org.springframework.boot:spring-boot-starter-test') {
        exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
    }
    testImplementation 'io.projectreactor:reactor-test'
}
test {
    useJUnitPlatform()
}

还有application.yml文件:

spring:

datasource:

url: jdbc:mysql://localhost:3308/appointmentSystem

username: root

password: rootpassword

jpa:

database-platform: org.hibernate.dialect.MySQL5Dialect

database: MYSQL

hibernate:

ddl-auto: update

server:

port: 8081

错误信息:

PS C:\Users\user\Desktop\Github\AppointmentsSystem - Copy> docker-compose.exe up
Creating network "appointmentssystem-copy_default" with the default driver
Creating appointmentssystem-copy_mysql_1 ... done                                                                                                                                                                                                                              Creating appointmentssystem-copy_app_1   ... done                                                                                                                                                                                                                              Attaching to appointmentssystem-copy_mysql_1, appointmentssystem-copy_app_1
mysql_1  | 2020-01-05 17:05:10+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.28-1debian9 started.
mysql_1  | 2020-01-05 17:05:10+00:00 [Note] [Entrypoint]: Switching to dedicated user 'mysql'
mysql_1  | 2020-01-05 17:05:10+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.28-1debian9 started.
mysql_1  | 2020-01-05T17:05:11.307944Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
mysql_1  | 2020-01-05T17:05:11.313597Z 0 [Note] mysqld (mysqld 5.7.28) starting as process 1 ...
mysql_1  | 2020-01-05T17:05:11.321895Z 0 [Note] InnoDB: PUNCH HOLE support available
mysql_1  | 2020-01-05T17:05:11.321911Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
mysql_1  | 2020-01-05T17:05:11.321914Z 0 [Note] InnoDB: Uses event mutexes
mysql_1  | 2020-01-05T17:05:11.321916Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
mysql_1  | 2020-01-05T17:05:11.321919Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
mysql_1  | 2020-01-05T17:05:11.321921Z 0 [Note] InnoDB: Using Linux native AIO
mysql_1  | 2020-01-05T17:05:11.322089Z 0 [Note] InnoDB: Number of pools: 1
mysql_1  | 2020-01-05T17:05:11.322160Z 0 [Note] InnoDB: Using CPU crc32 instructions
mysql_1  | 2020-01-05T17:05:11.323705Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
mysql_1  | 2020-01-05T17:05:11.349344Z 0 [Note] InnoDB: Completed initialization of buffer pool
mysql_1  | 2020-01-05T17:05:11.351768Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
mysql_1  | 2020-01-05T17:05:11.420065Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
mysql_1  | 2020-01-05T17:05:11.525183Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
mysql_1  | 2020-01-05T17:05:11.527734Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
mysql_1  | 2020-01-05T17:05:11.735100Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
mysql_1  | 2020-01-05T17:05:11.744572Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
mysql_1  | 2020-01-05T17:05:11.744744Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active.
mysql_1  | 2020-01-05T17:05:11.745330Z 0 [Note] InnoDB: Waiting for purge to start
mysql_1  | 2020-01-05T17:05:11.796296Z 0 [Note] InnoDB: 5.7.28 started; log sequence number 12442260
mysql_1  | 2020-01-05T17:05:11.796835Z 0 [Note] Plugin 'FEDERATED' is disabled.
mysql_1  | 2020-01-05T17:05:11.797225Z 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool
mysql_1  | 2020-01-05T17:05:11.878505Z 0 [Note] Found ca.pem, server-cert.pem and server-key.pem in data directory. Trying to enable SSL support using them.
mysql_1  | 2020-01-05T17:05:11.878712Z 0 [Note] Skipping generation of SSL certificates as certificate files are present in data directory.
mysql_1  | 2020-01-05T17:05:11.898316Z 0 [Warning] CA certificate ca.pem is self signed.
mysql_1  | 2020-01-05T17:05:11.900205Z 0 [Note] Skipping generation of RSA key pair as key files are present in data directory.
mysql_1  | 2020-01-05T17:05:11.910728Z 0 [Note] Server hostname (bind-address): '*'; port: 3306
mysql_1  | 2020-01-05T17:05:11.911146Z 0 [Note] IPv6 is available.
mysql_1  | 2020-01-05T17:05:11.911674Z 0 [Note]   - '::' resolves to '::';
mysql_1  | 2020-01-05T17:05:11.912095Z 0 [Note] Server socket created on IP: '::'.
mysql_1  | 2020-01-05T17:05:11.917607Z 0 [Warning] Insecure configuration for --pid-file: Location '/var/run/mysqld' in the path is accessible to all OS users. Consider choosing a different directory.
mysql_1  | 2020-01-05T17:05:11.947376Z 0 [Note] InnoDB: Buffer pool(s) load completed at 200105 17:05:11
mysql_1  | 2020-01-05T17:05:12.631614Z 0 [Note] Event Scheduler: Loaded 0 events
mysql_1  | 2020-01-05T17:05:12.632095Z 0 [Note] mysqld: ready for connections.
mysql_1  | Version: '5.7.28'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  MySQL Community Server (GPL)
app_1    |
app_1    |   .   ____          _            __ _ _
app_1    |  /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
app_1    | ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
app_1    |  \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
app_1    |   '  |____| .__|_| |_|_| |_\__, | / / / /
app_1    |  =========|_|==============|___/=/_/_/_/
app_1    |  :: Spring Boot ::        (v2.2.1.RELEASE)
app_1    |
app_1    | 2020-01-05 17:05:13.641  INFO 1 --- [           main] c.s.A.AppointmentsSystemApplication      : Starting AppointmentsSystemApplication on 185f7c998f26 with PID 1 (/app.jar started by root in /)
app_1    | 2020-01-05 17:05:13.660  INFO 1 --- [           main] c.s.A.AppointmentsSystemApplication      : No active profile set, falling back to default profiles: default
app_1    | 2020-01-05 17:05:14.985  INFO 1 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
app_1    | 2020-01-05 17:05:15.132  INFO 1 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 131ms. Found 5 repository interfaces.
app_1    | 2020-01-05 17:05:15.844  INFO 1 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
app_1    | 2020-01-05 17:05:16.390  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8081 (http)
app_1    | 2020-01-05 17:05:16.416  INFO 1 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
app_1    | 2020-01-05 17:05:16.417  INFO 1 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.27]
app_1    | 2020-01-05 17:05:16.533  INFO 1 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
app_1    | 2020-01-05 17:05:16.533  INFO 1 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 2786 ms
app_1    | 2020-01-05 17:05:17.203  INFO 1 --- [           main] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]
app_1    | 2020-01-05 17:05:17.317  INFO 1 --- [           main] org.hibernate.Version                    : HHH000412: Hibernate Core {5.4.8.Final}
app_1    | 2020-01-05 17:05:17.565  INFO 1 --- [           main] o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
app_1    | 2020-01-05 17:05:17.807  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
app_1    | 2020-01-05 17:05:18.033 ERROR 1 --- [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Exception during pool initialization.
app_1    |
app_1    | com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
app_1    |
app_1    | The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
app_1    |      at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:456) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.1.jar!/:na]
app_1    |      at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:353) ~[HikariCP-3.4.1.jar!/:na]
app_1    |      at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201) ~[HikariCP-3.4.1.jar!/:na]
app_1    |      at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) ~[HikariCP-3.4.1.jar!/:na]
app_1    |      at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:562) ~[HikariCP-3.4.1.jar!/:na]
app_1    |      at com.zaxxer.hikari.pool.HikariPool.(HikariPool.java:115) ~[HikariCP-3.4.1.jar!/:na]
app_1    |      at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.4.1.jar!/:na]
app_1    |      at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:68) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.(InFlightMetadataCollectorImpl.java:175) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1214) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1245) ~[hibernate-core-5.4.8.Final.jar!/:5.4.8.Final]
app_1    |      at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391) ~[spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:378) ~[spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1862) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1799) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1108) ~[spring-context-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868) ~[spring-context-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
app_1    |      at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
app_1    |      at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
app_1    |      at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
app_1    |      at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
app_1    |      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
app_1    |      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.1.RELEASE.jar!/:2.2.1.RELEASE]
app_1    |      at com.sulimanLab.AppointmentsSystem.AppointmentsSystemApplication.main(AppointmentsSystemApplication.java:10) ~[classes!/:na]
app_1    |      at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
app_1    |      at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
app_1    |      at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
app_1    |      at java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]
app_1    |      at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) ~[app.jar:na]
app_1    |      at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) ~[app.jar:na]
app_1    |      at org.springframework.boot.loader.Launcher.launch(Launcher.java:51) ~[app.jar:na]
app_1    |      at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52) ~[app.jar:na]
app_1    | Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure
app_1    |
app_1    | The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
app_1    |      at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:na]
app_1    |      at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:na]
app_1    |      at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na]
app_1    |      at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500) ~[na:na]
app_1    |      at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481) ~[na:na]
app_1    |      at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.NativeSession.connect(NativeSession.java:144) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:956) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:826) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      ... 57 common frames omitted
app_1    | Caused by: java.net.ConnectException: Connection refused
app_1    |      at java.base/sun.nio.ch.Net.pollConnect(Native Method) ~[na:na]
app_1    |      at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:579) ~[na:na]
app_1    |      at java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:542) ~[na:na]
app_1    |      at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:597) ~[na:na]
app_1    |      at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:339) ~[na:na]
app_1    |      at java.base/java.net.Socket.connect(Socket.java:585) ~[na:na]
app_1    |      at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ~[mysql-connector-java-8.0.18.jar!/:8.0.18]
app_1    |      ... 60 common frames omitted
app_1    |
app_1    | 2020-01-05 17:05:18.035  WARN 1 --- [           main] o.h.e.j.e.i.JdbcEnvironmentInitiator     : HHH000342: Could not obtain connection to query metadata : Communications link failure
app_1    |
app_1    | The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
app_1    | 2020-01-05 17:05:18.068  INFO 1 --- [           main] org.hibernate.dialect.Dialect            : HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
app_1    | 2020-01-05 17:05:19.454  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
app_1    | 2020-01-05 17:05:19.462 ERROR 1 --- [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Exception during pool initialization.
app_1    |
app_1    | com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

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