rpm方式
#删除老的，才能换新的
yum erase mysql-*
#安装即可
rpm -ivh MySQL-server-5.6.29-1.el6.x86_64.rpm
rpm -ivh MySQL-devel-5.6.29-1.el6.x86_64.rpm
rpm -ivh MySQL-client-5.6.29-1.el6.x86_64.rpm
#指定用户初始化
mkdir -p /web/data_3306/data
mysql_install_db --user=mysql --datadir=/web/data_3306/data/
cat /web/data_3306/my.cnf
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html
[client]
character-set-server = utf8
port = 3306
socket = /tmp/mysql_3306.sock
[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 = 128M
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
# These are commonly set, remove the # and set as required.
basedir = /usr/local/mysql
datadir = /web/data_3306/data
port = 3306
# server_id = .....
socket = /tmp/mysql_3306.sock
language = /usr/share/mysql/english
log-error = /web/data_3306/mysql_error.log
pid-file = /web/data_3306/mysql.pid
# 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 = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
#跳过授权，允许本地登录
mysqld_safe --defaults-file=/web/data_3306/my.cnf --skip-grant-tables --skip-networking
#通过socket登录
mysql -S /tmp/mysql_3306.sock -u root -p
mysql>use mysql
mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root' and host='root' or host='localhost';
mysql>FLUSH PRIVILEGES;
mysql>quit
[ERROR] Can't find messagefile '/usr/share/mysql/errmsg.sys'
配置文件指定语言目录
language = /usr/share/mysql/english
connect to server at 'localhost' failed
启动时添加选项
--skip-networking