Linux发行版centos 6升级kangle默认的mysql5.6为mysql5.7版本的详细一键脚本教程，构造大概升级请酌情考虑

yum -y remove mysql mysql*

rm -rf /var/lib/mysql/*

yum -y install mysql-libs

rpm -ivh http://github.itzmx.com/1265578519/repo/master/CentOS/5.7/mysql57-community-release-el6-7.noarch.rpm

rm -rf /etc/yum.repos.d/mysql-community.repo /etc/yum.repos.d/mysql-community-source.repo

wget http://github.itzmx.com/1265578519/repo/master/CentOS/5.7/mysql-community.repo -O /etc/yum.repos.d/mysql-community.repo

yum -y install mysql mysql-server

yum -y install php-cli php-mysql  php-gd php-xml php-ldap php-mbstring php-bcmath php-pdo

service mysqld restart

chkconfig --level 2345 mysqld on

rm -rf /etc/my.cnf

wget http://github.itzmx.com/1265578519/kangle/master/mysql/5.7/my.cnf -O /etc/my.cnf

service mysqld restart

# For advice on how to change settings please see

# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html

[mysqld]

#

# Remove leading # and set to the amount of RAM for the most important data

# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.

innodb_buffer_pool_size = 8M

#

# Remove leading # to turn on a very important data integrity option: logging

# changes to the binary log between backups.

# log_bin

#

# Remove leading # to set options mainly useful for reporting servers.

# The server defaults are faster for transactions and fast SELECTs.

# Adjust sizes as needed, experiment to find the optimal values.

join_buffer_size = 8M

sort_buffer_size = 2M

read_rnd_buffer_size = 2M

datadir=/var/lib/mysql

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

server-id = 1

log-bin

max_binlog_size=50M

expire_logs_days=7

skip-networking

default-time-zone = '+8:00'

performance_schema_max_table_instances=200

table_definition_cache=200

table_open_cache=128

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

symbolic-links=0

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

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