原文：
mkdir /usr/local/mysql
2.解壓並複製
tar -xvf mysql-5.7.17-linux-glibc2.5-i686.tar.gz
mv mysql-5.7.17-linux-glibc2.5-i686.tar.gz/* /usr/local/mysql/
3.建立data目錄（很重要！）
mkdir /usr/local/mysql/data
4.建立mysql使用者和修改許可權
groupadd mysql
chown -r mysql.mysql /usr/local/mysql/
5.初始化資料
[root@localhost mysql] ./bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/
2016-01-20 02:47:35 [warning] mysql_install_db is deprecated. please consider switching to mysqld --initialize
2016-01-20 02:47:45 [warning] the bootstrap log isn't empty:
2016-01-20 02:47:45 [warning] 2016-01-19t18:47:36.732678z 0 [warning] --bootstrap is deprecated. please consider using --initialize instead
2016-01-19t18:47:36.750527z 0 [warning] changed limits: max_open_files: 1024 (requested 5000)
2016-01-19t18:47:36.750560z 0 [warning] changed limits: table_open_cache: 431 (requested 2000)
6. 複製配置檔案到 /etc/my.cnf
cp -a ./support-files/my-default.cnf /etc/my.cnf (選擇y)
7. mysql的服務指令碼放到系統服務中
cp -a ./support-files/mysql.server /etc/init.d/mysqld
修改my.cnf檔案 （vim /etc/my.cnf）
# these are commonly set, remove the # and set as required.
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
port = 3306
# server_id = .....
socket = /tmp/mysql.sock
character-set-server = utf8
# 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
8.啟動mysql
service mysqld start
ps -ef #檢視是啟動
9.檢視初始化自動生成的密碼： cat /root/.mysql_secret （記住並複製下來，等會登陸mysql需要）
10.進入mysql：bin/mysql -uroot -p （把剛剛複製的密碼貼上上來）
11.登入後重置root密碼
mysql> set password for 'root'@localhost = password（'123456'）；
query ok, 0 rows affected, 1 warning (0.00 sec)
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