mysql怎么查看连接数

具体方法：

（推荐教程：mysql数据库学习教程）

查看当前连接数

./mysql -uroot -p1234.com -e 'show status' | grep -i  Threads 
Delayed_insert_threads    0
Slow_launch_threads    0
Threads_cached    1
Threads_connected    1
Threads_created    2
Threads_running    1 ##（当前连接数）

mysql> show status like 'Threads%';
+-------------------+-------+
| Variable_name    | Value |
+-------------------+-------+
| Threads_cached    | 1    |
| Threads_connected | 1    |
| Threads_created  | 2    |
| Threads_running  | 1    |   ###当前连接数
+-------------------+-------+
4 rows in set (0.00 sec)

查看连接数

[root@xxx bin]# ./mysql -uroot -p1234.com -e 'show variables' | grep max_connections
max_connections    500

mysql> show global variables like 'max_conn%';
+--------------------+-------+
| Variable_name      | Value |
+--------------------+-------+
| max_connect_errors | 10    |
| max_connections    | 500  |## 连接数
+--------------------+-------+
2 rows in set (0.00 sec)