Mysql最大连接数配置

查询数据库连接数

mysql> show status like 'Threads%';
+-------------------+-------+
| Variable_name     | Value |
+-------------------+-------+
| Threads_cached    | 0     |
| Threads_connected | 1     |
| Threads_created   | 1     |
| Threads_running   | 1     |
+-------------------+-------+
4 rows in set (0.00 sec)

Threads_running：打开连接数
Threads_connected：活跃连接数

查询最大连接数

mysql> show variables like '%max_connections%';
+--------------------+-------+
| Variable_name  | Value |
+--------------------+-------+
| max_connections| 151   |
+--------------------+-------+
2 rows in set (0.00 sec)

max_connections：最大连接数

修改最大连接数

命令修改，立即生效重启失效
mysql> set global max_connections = 1000;

添加配置，重启后生效
[mysqld]
max_connections = 1000