连接dev nacos显示数据库连接不上

一、该问题的重现步骤是什么？

1. 修改 dev nacos配置

2. 启动Auth服务

3.报数据库连接不上，就是没有连接到nacos. 配置都正确。

二、你期待的结果是什么？实际看到的又是什么？

三、你正在使用的是什么产品，什么版本？在什么操作系统上？

bladex2.7 centos 

四、请提供详细的错误堆栈信息，这很重要。

BladeAuthorizationServerConfiguration.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [com/alibaba/druid/spring/boot/autoconfigure/DruidDataSourceAutoConfigure.class]: Invocation of init method failed; nested exception is java.sql.SQLException: connect error, url ${blade.datasource.dev.url}, driverClass com.mysql.cj.jdbc.Driver

2021-01-05 10:22:54.830 ERROR [blade-auth,,,] 85510 --- [eate-1159524199] com.alibaba.druid.pool.DruidDataSource   : create connection SQLException, url: ${blade.datasource.dev.url}, errorCode 0, state null

java.sql.SQLException: connect error, url ${blade.datasource.dev.url}, driverClass com.mysql.cj.jdbc.Driver

at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1721) ~[druid-1.2.1.jar:1.2.1]

at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2785) ~[druid-1.2.1.jar:1.2.1]

2021-01-05 10:22:55.002 ERROR [blade-auth,,,] 85510 --- [eate-1495678843] com.alibaba.druid.pool.DruidDataSource   : create connection SQLException, url: ${blade.datasource.dev.url}, errorCode 0, state null

java.sql.SQLException: connect error, url ${blade.datasource.dev.url}, driverClass com.mysql.cj.jdbc.Driver

at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1721) ~[druid-1.2.1.jar:1.2.1]

at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2785) ~[druid-1.2.1.jar:1.2.1]

2021-01-05 10:22:55.335 ERROR [blade-auth,,,] 85510 --- [eate-1159524199] com.alibaba.druid.pool.DruidDataSource   : create connection SQLException, url: ${blade.datasource.dev.url}, errorCode 0, state null

java.sql.SQLException: connect error, url ${blade.datasource.dev.url}, driverClass com.mysql.cj.jdbc.Driver

at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1721) ~[druid-1.2.1.jar:1.2.1]

at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2785) ~[druid-1.2.1.jar:1.2.1]

2021-01-05 10:22:55.508 ERROR [blade-auth,,,] 85510 --- [eate-1495678843] com.alibaba.druid.pool.DruidDataSource   : create connection SQLException, url: ${blade.datasource.dev.url}, errorCode 0, state null

java.sql.SQLException: connect error, url ${blade.datasource.dev.url}, driverClass com.mysql.cj.jdbc.Driver

at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1721) ~[druid-1.2.1.jar:1.2.1]

at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2785) ~[druid-1.2.1.jar:1.2.1]

2021-01-05 10:22:55.524  WARN [blade-auth,,,] 85510 --- [           main] z.r.AsyncReporter$BoundedAsyncReporter   : Timed out waiting for in-flight spans to send

2021-01-05 10:22:55.548  INFO [blade-auth,,,] 85510 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.

2021-01-05 10:22:55.564 ERROR [blade-auth,,,] 85510 --- [           main] o.s.boot.SpringApplication        

五、若有更多详细信息，请在下面提供。