部署的Python项目连接MySQL报错：WARNING in log: (OperationalError('(pymysql.err.OperationalError) (2006, "MySQL server has gone away (BrokenPipeError(32, \'Broken pipe\'))")',),)
原因：
超过8小时MySQL未有连接会报该错
处理方案：
进入MySQL，查询当前的连接超时时间（interactive_timeout 和 wait_timeout）
mysql> show global variables like '%timeout';
+-----------------------------------+----------+
| Variable_name | Value |
+-----------------------------------+----------+
| connect_timeout | 10 |
| delayed_insert_timeout | 300 |
| have_statement_timeout | YES |
| innodb_flush_log_at_timeout | 1 |
| innodb_lock_wait_timeout | 50 |
| innodb_rollback_on_timeout | OFF |
| interactive_timeout | 28800 |
| lock_wait_timeout | 31536000 |
| mysqlx_connect_timeout | 30 |
| mysqlx_idle_worker_thread_timeout | 60 |
| mysqlx_interactive_timeout | 28800 |
| mysqlx_port_open_timeout | 0 |
| mysqlx_read_timeout | 30 |
| mysqlx_wait_timeout | 28800 |
| mysqlx_write_timeout | 60 |
| net_read_timeout | 30 |
| net_write_timeout | 60 |
| rpl_stop_slave_timeout | 31536000 |
| slave_net_timeout | 60 |
| wait_timeout | 28800 |
+-----------------------------------+----------+
20 rows in set (0.00 sec)
默认的是 28800 秒，即8个小时。
将 interactive_timeout 和 wait_timeou 的默认时间修改为24小时(86400秒）
mysql> set global interactive_timeout=86400, wait_timeout=86400;
查询修改是否成功
mysql> show global variables like '%timeout';
+-----------------------------------+----------+
| Variable_name | Value |
+-----------------------------------+----------+
| connect_timeout | 10 |
| delayed_insert_timeout | 300 |
| have_statement_timeout | YES |
| innodb_flush_log_at_timeout | 1 |
| innodb_lock_wait_timeout | 50 |
| innodb_rollback_on_timeout | OFF |
| interactive_timeout | 86400 |
| lock_wait_timeout | 31536000 |
| mysqlx_connect_timeout | 30 |
| mysqlx_idle_worker_thread_timeout | 60 |
| mysqlx_interactive_timeout | 28800 |
| mysqlx_port_open_timeout | 0 |
| mysqlx_read_timeout | 30 |
| mysqlx_wait_timeout | 28800 |
| mysqlx_write_timeout | 60 |
| net_read_timeout | 30 |
| net_write_timeout | 60 |
| rpl_stop_slave_timeout | 31536000 |
| slave_net_timeout | 60 |
| wait_timeout | 86400 |
+-----------------------------------+----------+
20 rows in set (0.00 sec)
我的笔记
OperationalError('(pymysql.err.OperationalError) (2006, "MySQL server has gone away (BrokenPipeError(32, 'Broken pipe'))")')
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