cd /usr/local/
tar -xzvf mysql压缩包名

groupadd mysql                   --创建mysql用户组组
useradd -r -g mysql mysql     --创建mysql用户并添加到mysql用户组中
chown -R mysql mysql/         --将mysql目录访问权限赋为myql用户
chgrp -R mysql mysql/          --改变mysql目录的用户组属于mysql组
注：
chmod 命令
用于改变文件或目录的访问权限。用户用它控制文件或目录的访问权限。

chgrp命令
改变文件或目录所属的组。

-R处理指定目录以及其子目录下的所有文件

vim /etc/my.cnf

#复制以下内容

[client]
port = 3306
socket = /tmp/mysql.sock

[mysqld]
character_set_server=utf8
init_connect=\'SET NAMES utf8\'
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
socket=/tmp/mysql.sock
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
#不区分大小写
lower_case_table_names = 1

sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

max_connections=5000

default-time_zone = \'+8:00\'

#先安装一下这个东东，要不然初始化有可能会报错
yum install libaio
#手动编辑一下日志文件，什么也不用写，直接保存退出
cd /var/log/

vim mysqld.log
：wq

chmod 777 mysqld.log
chown mysql:mysql mysqld.log

/usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --lc_messages_dir=/usr/local/mysql/share --lc_messages=en_US

cat /var/log/mysqld.log

最后一行：root@localhost: 这里就是初始密码

#如果提示必须要修改密码才可以进行操作的话则执行下面操作
set password=password(\'新密码\');

flush privileges;

UPDATE `mysql`.`user` SET `Host` = \'%\',  `User` = \'root\'  WHERE (`Host` = \'localhost\') AND (`User` = \'root\');

#然后执行如下操作开启mysql服务，以及设置相关权限
cd /var/run/

mkdir mysqld

chmod 777 mysqld

cd mysqld

vim mysqld.pid

chmod 777 mysqld.pid

chown mysql:mysql mysqld.pid 

/usr/local/mysql/support-files/mysql.server start

/usr/local/mysql/bin/mysql -uroot -p 你在上面看到的初始密码

# 以下是进入数据库之后的sql语句
 use mysql;

 UPDATE `mysql`.`user` SET `Host`=\'%\', `User`=\'root\', `Select_priv`=\'Y\', `Insert_priv`=\'Y\', `Update_priv`=\'Y\', `Delete_priv`=\'Y\', `Create_priv`=\'Y\', `Drop_priv`=\'Y\', `Reload_priv`=\'Y\', `Shutdown_priv`=\'Y\', `Process_priv`=\'Y\', `File_priv`=\'Y\', `Grant_priv`=\'Y\', `References_priv`=\'Y\', `Index_priv`=\'Y\', `Alter_priv`=\'Y\', `Show_db_priv`=\'Y\', `Super_priv`=\'Y\', `Create_tmp_table_priv`=\'Y\', `Lock_tables_priv`=\'Y\', `Execute_priv`=\'Y\', `Repl_slave_priv`=\'Y\', `Repl_client_priv`=\'Y\', `Create_view_priv`=\'Y\', `Show_view_priv`=\'Y\', `Create_routine_priv`=\'Y\', `Alter_routine_priv`=\'Y\', `Create_user_priv`=\'Y\', `Event_priv`=\'Y\', `Trigger_priv`=\'Y\', `Create_tablespace_priv`=\'Y\', `ssl_type`=\'\', `ssl_cipher`=\'\', `x509_issuer`=\'\', `x509_subject`=\'\', `max_questions`=\'0\', `max_updates`=\'0\', `max_connections`=\'0\', `max_user_connections`=\'0\', `plugin`=\'mysql_native_password\', `authentication_string`=\'*6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9\', `password_expired`=\'N\', `password_last_changed`=\'2017-11-20 12:41:07\', `password_lifetime`=NULL, `account_locked`=\'N\' WHERE  (`User`=\'root\');

 flush privileges;

cd /usr/local/mysql/support-files

cp mysql.server /etc/init.d/mysqld

chkconfig --add mysqld

su - mysql

service mysqld start/stop/restart

远程用户建立

grant all privileges on *.* to \'新用户名\'@\'%\' identified by \'新密码\';

flush privileges;

添加系统路径

vim /etc/profile

export PATH=/usr/local/mysql/bin:$PATH

source /etc/profile