k8s 部署后，canal-admin无法连接到外部数据库

进入pod telnet 数据库地址和端口是正常，mysql版本是8.0，

但是启动admin的时候可以看到下面的报错日志 `2020-02-29 17:34:34.908 [main] INFO o.s.b.a.logging.ConditionEvaluationReportLoggingListener -

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2020-02-29 17:34:34.914 [main] ERROR org.springframework.boot.SpringApplication - Application run failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ebeanServer' defined in class path resource [com/alibaba/otter/canal/admin/config/EbeanConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [io.ebean.EbeanServer]: Factory method 'ebeanServer' threw exception; nested exception is javax.persistence.PersistenceException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:587) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1250) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1099) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:541) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:501) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) at com.alibaba.otter.canal.admin.CanalAdminApplication.main(CanalAdminApplication.java:19) Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [io.ebean.EbeanServer]: Factory method 'ebeanServer' threw exception; nested exception is javax.persistence.PersistenceException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:579) ... 16 common frames omitted Caused by: javax.persistence.PersistenceException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. at io.ebeaninternal.server.core.DefaultContainer.checkDataSource(DefaultContainer.java:323) at io.ebeaninternal.server.core.DefaultContainer.createServer(DefaultContainer.java:106) at io.ebeaninternal.server.core.DefaultContainer.createServer(DefaultContainer.java:35) at io.ebean.EbeanServerFactory.createInternal(EbeanServerFactory.java:109) at io.ebean.EbeanServerFactory.create(EbeanServerFactory.java:70) at com.alibaba.otter.canal.admin.config.EbeanConfig.ebeanServer(EbeanConfig.java:38) at com.alibaba.otter.canal.admin.config.EbeanConfig$$EnhancerBySpringCGLIB$$ba5c7f07.CGLIB$ebeanServer$0() at com.alibaba.otter.canal.admin.config.EbeanConfig$$EnhancerBySpringCGLIB$$ba5c7f07$$FastClassBySpringCGLIB$$e4c2856e.invoke() at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:361) at com.alibaba.otter.canal.admin.config.EbeanConfig$$EnhancerBySpringCGLIB$$ba5c7f07.ebeanServer() at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ... 17 common frames omitted Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.Util.getInstance(Util.java:408) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:918) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:897) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:886) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:860) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2330) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2083) at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:806) at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:410) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:328) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:117) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:123) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:365) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:194) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:460) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:534) at com.zaxxer.hikari.pool.HikariPool.(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) at io.ebeaninternal.server.core.DefaultContainer.checkDataSource(DefaultContainer.java:316) ... 32 common frames omitted Caused by: java.lang.NullPointerException: null at com.mysql.jdbc.ConnectionImpl.getServerCharset(ConnectionImpl.java:2997) at com.mysql.jdbc.MysqlIO.sendConnectionAttributes(MysqlIO.java:1934) at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1863) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1226) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2253) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2284) ... 51 common frames omitted `

原提问者GitHub用户haoas