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

【背景】

折腾:

【已解决】OpenFire无法解析domain:org.jivesoftware.openfire.XMPPServer – Unable to determine local hostname

期间,去连接mysql,结果出错:

ERROR 1040 (HY000): Too many connections

如图:

mysql ERROR 1040 (HY000) Too many connections

【解决过程】

1.搜:

mysql ERROR 1040 (HY000): Too many connections

找了一堆没用。

mySQL Error 1040: Too Many Connection – Stack Overflow

MySQL :: MySQL 5.5 Reference Manual :: B.5.2.7 Too many connections

2.参考:

Help!!!! 1040 – Too many connections | Web Hosting Talk

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

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:

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:

service mysqld restart

即可正常连接mysql。



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