【已解决】mysql连接出错：ERROR 1040 (HY000): Too many connections

连接mysql，结果出错：

1	`ERROR 1040 (HY000): Too many connections`

去修改mysql的配置文件，然后添加：

root@bogon:logs# vi /etc/my.cnf

[mysqld]

lower_case_table_names=1

lower_case_table_names=0

lower_case_table_names=1

datadir=/var/lib/mysql

socket=/var/lib/mysql/mysql.sock

max_connections=100

max_user_connections=100

# Disabling symbolic-links is recommended to prevent assorted security risks

symbolic-links=0

# Settings user and group are ignored when systemd is used (fedora >= 15).

# If you need to run mysqld under a different user or group,

# customize your systemd unit file for mysqld according to the

# instructions in http://fedoraproject.org/wiki/Systemd

user=mysql

# Semisynchronous Replication

# http://dev.mysql.com/doc/refman/5.5/en/replication-semisync.html

# uncomment next line on MASTER

;plugin-load=rpl_semi_sync_master=semisync_master.so

# uncomment next line on SLAVE

;plugin-load=rpl_semi_sync_slave=semisync_slave.so

# Others options for Semisynchronous Replication

;rpl_semi_sync_master_enabled=1

;rpl_semi_sync_master_timeout=10

;rpl_semi_sync_slave_enabled=1

# http://dev.mysql.com/doc/refman/5.5/en/performance-schema.html

;performance_schema

[mysqld_safe]

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

然后重启mysqld：

oot@bogon:logs# service mysqld restart

Stopping mysqld: [ OK ]

Starting mysqld: [ OK ]

root@bogon:logs#

然后重新连接试试，就可以了：

root@bogon:logs# mysql -u root -p openfire_schoolike

Enter password:

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 440

Server version: 5.5.44-cll-lve MySQL Community Server (GPL) by Atomicorp

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

【总结】

当连接mysql时，出现：

ERROR 1040 (HY000): Too many connections

的错误时：

去增加mysql的最大连接数即可：

修改mysql的配置文件：

/etc/my.cnf

在[mysqld]字段中增加配置：

1 2	`max_connections=100` `max_user_connections=100`

当然可以根据自己需要，设置更大的值。

然后再重启mysqld：

1	`service mysqld restart`

即可正常连接mysql。

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