——墨问苍生
1 2020-01-13 14:26:58.733 WARN 15263 --- [http-nio-8830-exec-10] com.zaxxer.hikari.pool.PoolBase : MyHikariCP - Failed to validate connection com.mysql.cj.jdbc.ConnectionImpl@49fe3d0e (No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value. 2 2020-01-13 14:26:58.735 WARN 15263 --- [http-nio-8830-exec-10] com.zaxxer.hikari.pool.PoolBase : MyHikariCP - Failed to validate connection com.mysql.cj.jdbc.ConnectionImpl@516aa6c4 (No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value.
首先在mysql中执行
1 SHOW VARIABLES LIKE "%timeout%";
后查阅资料发现不是这个问题
修改/etc/my.cnf文件，添加或修改如下代码
问题解决