《MYSQL数据库mysql连接数设置操作方法(Too many connections)》要点:
本文介绍了MYSQL数据库mysql连接数设置操作方法(Too many connections),希望对您有用。如果有疑问,可以联系我们。
mysql在使用过程中,发现连接数超了~~~~MYSQL必读
[root@linux-node1 ~]# mysql -u glance -h 192.168.1.17 -p
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Enter password:MYSQL必读
ERROR 1040 (08004): Too many connectionsMYSQL必读
解决办法,这也是centos7下修改mysql连接数的做法:
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1)临时修改
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MariaDB [(none)]> show variables like "max_connections";
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| max_connections | 214 |
+-----------------+-------+
1 row in set (0.00 sec)
MariaDB [(none)]> set GLOBAL max_connections=1000;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> show variables like "max_connections";
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| max_connections | 1000 |
+-----------------+-------+
1 row in set (0.00 sec)MYSQL必读
2)永久修改:
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配置/etc/my.cnf
[mysqld]新添加一行如下参数:
max_connections=1000
重启mariadb服务,再次查看mariadb数据库最大连接数,可以看到最大连接数是214,并非我们设置的1000.
MariaDB [(none)]> show variables like 'max_connections';
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| max_connections | 214 |
+-----------------+-------+
这是由于mariadb有默认打开文件数限制.可以通过配置/usr/lib/systemd/system/mariadb.service来调大打开文件数目.MYSQL必读
配置/usr/lib/systemd/system/mariadb.service
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[Service]新添加两行如下参数:
LimitNOFILE=10000
LimitNPROC=10000MYSQL必读
重新加载系统服务,并重启mariadb服务
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systemctl --system daemon-reload
systemctl restart mariadb.serviceMYSQL必读
再次查看mariadb数据库最大连接数,可以看到最大连接数已经是1000
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MariaDB [(none)]> show variables like 'max_connections';
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| max_connections | 1000 |
+-----------------+-------+MYSQL必读
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