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

四：创建配置文件 保存并退出

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'

 五：初始化数据库

#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

六：查看初始密码

cat /var/log/mysqld.log

最后一行：root@localhost: 这里就是初始密码

七：启动服务，进入mysql，修改初始密码，运行远程连接

#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;

八：开机自动启动

cd /usr/local/mysql/support-files
cp mysql.server /etc/init.d/mysqld
chkconfig --add mysqld

 九：使用service mysqld命令启动/停止服务

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

使用navicat输入用户密码连接mysql成功 完成！

总结