1. Mysql下載：從官網下載需要的mysql安裝包：https://www.mysql.com/downloads/ or http://dev.mysql.com/downloads/mysql/。選擇Community→MYSQL Community Server（GPL)→Linux-Generic選擇需要的版本即可，本次安裝下載的版本為：mysql-test-5.7.17-linux-glibc2.5-x86_64.tar.gz
2. 檢查你所用的Linux下有沒有安裝過mysql，沒有卸載干凈
rpm -qa|grep -i mysql檢查是否安裝了mysql，有的話全部卸掉
rpm -e mysql-5.7.13-linux-glibc2.5-x86_64 --nodeps 強制卸除
3. 創建mysql的用戶組/用戶, data目錄及其用戶目錄
在這步之前一定要先確保你所建的用戶以及用戶組沒有存在，要不然在后面的過程中會報錯,刪除時候
要先刪除用戶在刪除用戶組名。
userdel mysql #刪除用戶
groupdel mysql #刪除用戶組名
mkdir /home/mysql #在home文件夾下創建mysql
groupadd mysql #創建一個名為mysql的用戶組
useradd -g mysql -d /home/mysql mysql #在用戶組下創建用戶
4. 解壓安裝包並將解壓包里的內容拷貝到mysql的安裝目錄/home/mysql
tar -zxvf XXX.tar.gz
cd XXX
mv * /home/mysql
5. 初始化mysql數據庫
cd /home/mysql
5.7新特性需要運行：
運行./bin/mysqld --user=mysql --basedir=/home/mysql --datadir=/home/mysql/data --initialize報錯：
./bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory
解決辦法： yum install libaio* 自動安裝這兩個包
其他版本運行：
./bin/mysqld_install_db --user=mysql --basedir=/home/mysql --datadir=/home/mysql/data
安裝成功后：
2017-02-17T08:36:05.914355Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-02-17T08:36:06.885084Z 0 [Warning] InnoDB: New log files created, LSN=45790
2017-02-17T08:36:07.022957Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2017-02-17T08:36:07.087779Z 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: 20305996-f4ec-11e6-90f4-005056878563.
2017-02-17T08:36:07.089250Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2017-02-17T08:36:07.090938Z 1 [Note] A temporary password is generated for root@localhost: .vR8gaai!Z6e
6. 檢查mysql服務是否可以啟動：
cd /home/mysql
./supprot-files/mysql.server start
Starting Mysql...OK!
可能報錯找不到路徑，需要修改配置文件或者建立軟連接
# ./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)
由上面可知mysql的tar.gz安裝包的默認安裝目錄為/usr/local/mysql， 這時候我們需要修改/support-files/mysql.server文件的basedir和datadir目錄路徑為我們環境所在的mysql的basedir和datadir路徑， 如下：
# vim support-files/mysql.server
--------------------------
...
basedir=/home/mysql
datadir=/home/mysql/data
...
--------------------------
# ./support-files/mysql.server start
start Starting MySQL.. OK!
創建軟連接
# ln -s /home/mysql/bin/mysql /usr/bin/mysql
刪除軟連接：rm -rf mysql，不要帶/，否則會將源文件刪除掉
7. 創建配置文件：
將默認的my.cnf備份,如果沒有則創建my.cnf
mv /etc/my.cnf /etc/my.cnf.bak
將安裝目錄下的my-default.cnf拷貝到/etc下面
cd /home/mysql/support-files
cp my-default.cnf /etc/my.cnf
設置編碼為utf8，以防止亂碼
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
8. 配置mysql服務開機自動啟動
# cp /home/mysql/support-files/mysql.server /etc/init.d/mysqld
# 拷貝啟動文件到/etc/init.d/下並重命令為mysqld
# chmod 755 /etc/init.d/mysqld # 增加執行權限
# chkconfig --list mysqld # 檢查自啟動項列表中沒有mysqld這個，
# chkconfig --add mysqld # 如果沒有就添加mysqld：
# chkconfig mysqld on # 用這個命令設置開機啟動：
9. mysql服務啟動/重啟/停止
# service mysqld start # 啟動服務
# service mysqld restart # 重啟服務
# service mysqld stop # 停止服務
10. 初始化mysql用戶root的密碼
# 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
--------------
可能會出現密碼錯誤登陸不進去的情況：
1）使用service mysqld stop停止服務，然后使用./home/mysql/bin/mysqld_safe --skip-grant-tables &啟動mysql服務，
2）輸入 ./home/mysql/bin/mysql -u root -p 回車進入
>use mysql;
update mysql.user set authentication_string=password('123456') where user='root';
> flush privileges; 更新權限
> quit 退出
11. mysql遠程授權
重新啟動mysql服務，使用修改后的密碼登陸，有可能進去mysql后提示ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.需要執行下
SET PASSWORD = PASSWORD('123456');問題解決
[root@testfornss ~]# mysql -u root -p
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';
參考博文：http://www.cnblogs.com/gaojupeng/p/5727069.html
http://blog.csdn.net/zl17/article/details/8589454
