#rpm -qa|grep -i mysql
mysql-5.7.13-linux-glibc2.5-x86_64

#rpm -e mysql-5.7.13-linux-glibc2.5-x86_64 --nodeps

# userdel mysql # 刪除用戶
# groupdel mysql # 刪除用戶組名
# mkdir /home/mysql # 在home文件夾下創(chuàng)建文件夾mysql
# mkdir /home/mysql/data # 在mysql文件夾下創(chuàng)建文件夾data 
# groupadd mysql # 創(chuàng)建一個(gè)名為mysql的用戶組 
# useradd -g mysql -d /home/mysql mysql # 在用戶組下創(chuàng)建用戶

# tar -xzvf mysql-5.7.13-linux-glibc2.5-x86_64.tar.gz # 解壓文件
# cd mysql-5.7.13-linux-glibc2.5-x86_64 # 進(jìn)入
# mv * /home/mysql # 移動(dòng)到之前我創(chuàng)建的mysql文件夾下。

# cd /home/mysql # 進(jìn)入安裝目錄
# ./bin/mysql_install_db --user=mysql --basedir=/home/mysql --datadir=/home/mysql/data
[WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize 2015-11-10 02:09:23
[WARNING] The bootstrap log isn't empty: 2015-11-10 02:09:23
[WARNING] 2015-11-10T10:09:18.114182Z 0
[Warning] --bootstrap is deprecated. Please consider using --initialize instead 2015-11-10T10:09:18.129343Z 0
[Warning] Changed limits: max_open_files: 1024 (requested 5000) 2015-11-10T10:09:18.129408Z 0
[Warning] Changed limits: table_open_cache: 431 (requested 2000)

# ./bin/mysqld --user=mysql --basedir=/home/mysql --datadir=/home/mysql/data --initialize
# ./mysqld --user=mysql --basedir=/home/mysql --datadir=/home/mysql/data --initialize
[Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
[ERROR] --initialize specified but the data directory has files in it. Aborting. 2016-04-08T01:46:53.155879Z 0
[ERROR] Aborting

# cd /home/mysql/data # 進(jìn)入安裝目錄下的data目錄
# rm -fr * # 清空數(shù)據(jù)
# cd /home/mysql 
# ./bin/mysqld --user=mysql --basedir=/home/mysql --datadir=/home/mysql/data --initialize
[Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2016-04-08T01:47:59.945537Z 0
[Warning] InnoDB: New log files created, LSN=45790 2016-04-08T01:48:00.333528Z 0 [Warning] InnoDB: Creating foreign key constraint system tables. 2016-04-08T01:48:00.434908Z 0
[Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: ece26421-fd2b-11e5-a1e3-00163e001e5c. 2016-04-08T01:48:00.440125Z 0
[Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened. 2016-04-08T01:48:00.440904Z 1
[Note] A temporary password is generated for root@localhost: **mjT,#x_5sW

# cd /home/mysql
# ./support-files/mysql.server start
Starting MySQL.. OK!

# ./support-files/mysql.server start
./support-files/mysql.server: line 276: cd: /usr/local/mysql: No such file or directory
Starting MySQL ERROR! Couldn't find MySQL server (/usr/local/mysql/bin/mysqld_safe)

# vim support-files/mysql.server
--------------------------
...
basedir=/home/mysql
datadir=/home/mysql/data
...
--------------------------
# ./support-files/mysql.server
start Starting MySQL.. OK!

# ln -s /home/mysql/bin/mysql /usr/bin/mysql

# mv /etc/my.cnf /etc/my.cnf.bak

# cd /home/mysql/support-files

# cp my-default.cnf /etc/my.cnf

# vim /etc/my.cnf
[mysqld]
basedir = /home/mysql
datadir = /home/mysql/data
character_set_server=utf8
init_connect='SET NAMES utf8'
[client]
default-character-set=utf8

# cp /home/mysql/support-files/mysql.server /etc/init.d/mysqld # 拷貝啟動(dòng)文件到/etc/init.d/下并重命令為mysqld
# chmod 755 /etc/init.d/mysqld # 增加執(zhí)行權(quán)限
# chkconfig --list mysqld # 檢查自啟動(dòng)項(xiàng)列表中沒(méi)有mysqld這個(gè)，
# chkconfig --add mysqld # 如果沒(méi)有就添加mysqld：
# chkconfig mysqld on # 用這個(gè)命令設(shè)置開(kāi)機(jī)啟動(dòng)：

# service mysqld start # 啟動(dòng)服務(wù)
# service mysqld restart # 重啟服務(wù)
# service mysqld stop # 停止服務(wù)

# cd /home/mysql
# ./bin/mysqladmin -u root -p '**mjT,#x_5sW' password '123456' mysqladmin: # 剛剛之前的初始密碼
[Warning] Using a password on the command line interface can be insecure.
Warning: Since password will be sent to server in plain text, use ssl connection to ensure password safety.
mysql> use mysql
Database changed
mysql> update user set authentication_string = PASSWORD('123456') where user = 'root';
Query OK, 0 rows affected, 1 warning (0.00 sec)
Rows matched: 2 Changed: 0 Warnings: 1
mysql> \s
--------------
mysql Ver 14.14 Distrib 5.7.13, for linux-glibc2.5 (x86_64) using EditLine wrapper
Connection id: 3
Current database: mysql
Current user: root@localhost
SSL: Not in use
Current pager: stdout
Using outfile: ''
Using delimiter: ;
Server version: 5.7.13 MySQL Community Server (GPL)
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: utf8
Db characterset: utf8
Client characterset: utf8
Conn. characterset: utf8
UNIX socket: /tmp/mysql.sock
Uptime: 1 hour 29 min 17 sec
Threads: 1 Questions: 50 Slow queries: 0 Opens: 136 Flush tables: 1 Open tables: 129 Queries per second avg: 0.009
--------------

mysql> SET PASSWORD = PASSWORD('123456'); # PASSWORD()里面的123456 是我設(shè)置的新密碼，你也可以設(shè)置成你的密碼
Query OK, 0 rows affected, 1 warning (0.00 sec)
Rows matched: 2 Changed: 0 Warnings: 1
mysql> ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;
Query OK, 0 rows affected, 1 warning (0.00 sec)
Rows matched: 2 Changed: 0 Warnings: 1
mysql> flush privileges;
Query OK, 0 rows affected, 1 warning (0.00 sec)
Rows matched: 2 Changed: 0 Warnings: 1

[root@testfornss ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.13 MySQL Community Server (GPL)
Copyright (c) 2000, 2016, 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> grant all privileges on *.* to 'root'@'%' identified by '123456';
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql>

grant all on *.* to 'root'@'%' identified by '123456';