1.mariadb数据库最大连接数,默认是151
MariaDB [(none)]> show variables like 'max_connections';
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| max_connections | 151 |
+-----------------+-------+
2.配置/etc/my.cnf
[mysqld]
...
max_connections=4096
3.重启数据库服务
systemctl restart mariadb
4.重启mariadb服务,再次查看mariadb数据库最大连接数,最大连接数是214,并非我们设置的4096。
MariaDB [(none)]> show variables like 'max_connections';
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| max_connections | 214 |
+-----------------+-------+
5.因为mariadb有默认打开文件数限制,所以我们还要修改mariadb.service
文件
vim /usr/lib/systemd/system/mariadb.service
[Service]
...
LimitNOFILE=10000
LimitNPROC=10000
6.重新加载系统服务,并重启mariadb服务
systemctl --system daemon-reload
systemctl restart mariadb.service
7.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4096
MariaDB [(none)]> show variables like 'max_connections';
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| max_connections | 4096 |
+-----------------+-------+
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