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

Posted 2021-01-30 Oops!

连接mysql，结果出错：

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1	ERROR 1040 (HY000): Too many connections

去修改mysql的配置文件，然后添加：

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[email protected]: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：

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[email protected]:logs# service mysqld restart Stopping mysqld:                                           [  OK  ] Starting mysqld:                                           [  OK  ] [email protected]:logs#

然后重新连接试试，就可以了：

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[email protected]: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   Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.   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：

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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：

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1	service mysqld restart

即可正常连接mysql。