1、 下載

選擇你需要安裝的版本，這裡我的電腦是CentOS7.3 64位

然後下載 RPM Bundle，這個是幾個程式的合集包。

然後開始下載。。。。

2、 解壓安裝包

解壓mysql-5.7.20-1.el7.x86_64.rpm-bundle.tar

 #tar -xvf mysql-5.7.20-1.el7.x86_64.rpm-bundle.tar

mysql-community-client-5.7.20-1.el7.x86_64.rpm
mysql-community-common-5.7.20-1.el7.x86_64.rpm
mysql-community
 
-devel-5.7.20-1.el7.x86_64.rpm
mysql-community-embedded-5.7.20-1.el7.x86_64.rpm
mysql-community-embedded-compat-5.7.20-1.el7.x86_64.rpm
mysql-community-embedded-devel-5.7.20-1.el7.x86_64.rpm
mysql-community-libs-5.7.20-1.el7.x86_64.rpm
mysql-community-libs-compat-5.7.20-1.el7.x86_64.rpm
mysql-community-minimal
 
-debuginfo-5.7.20-1.el7.x86_64.rpm
mysql-community-server-5.7.20-1.el7.x86_64.rpm
mysql-community-server-minimal-5.7.20-1.el7.x86_64.rpm
mysql-community-test-5.7.20-1.el7.x86_64.rpm

#ls

-rw-r--r-- 1 7155 31415  25090196 Sep 14 23:44 mysql-community-client-5.7.20-1.el7.x86_64.rpm
-rw-r--r-- 1 7155 31415
 
    278300 Sep 14 23:44 mysql-community-common-5.7.20-1.el7.x86_64.rpm
-rw-r--r-- 1 7155 31415   3778120 Sep 14 23:44 mysql-community-devel-5.7.20-1.el7.x86_64.rpm
-rw-r--r-- 1 7155 31415  46238924 Sep 14 23:44 mysql-community-embedded-5.7.20-1.el7.x86_64.rpm
-rw-r--r-- 1 7155 31415  24077232 Sep 14 23:44 mysql-community-embedded-compat-5.7.20-1.el7.x86_64.rpm
-rw-r--r-- 1 7155 31415 128440800 Sep 14 23:44 mysql-community-embedded-devel-5.7.20-1.el7.x86_64.rpm
-rw-r--r-- 1 7155 31415   2238604 Sep 14 23:44 mysql-community-libs-5.7.20-1.el7.x86_64.rpm
-rw-r--r-- 1 7155 31415   2115892 Sep 14 23:44 mysql-community-libs-compat-5.7.20-1.el7.x86_64.rpm
-rw-r--r-- 1 7155 31415  55538708 Sep 14 23:44 mysql-community-minimal-debuginfo-5.7.20-1.el7.x86_64.rpm
-rw-r--r-- 1 7155 31415 171597916 Sep 14 23:45 mysql-community-server-5.7.20-1.el7.x86_64.rpm
-rw-r--r-- 1 7155 31415  15256460 Sep 14 23:45 mysql-community-server-minimal-5.7.20-1.el7.x86_64.rpm
-rw-r--r-- 1 7155 31415 118609776 Sep 14 23:45 mysql-community-test-5.7.20-1.el7.x86_64.rpm

3、安裝

解除安裝已安裝的mysql-libs

# rpm -qa | grep -i mysql
mysql-libs-5.1.73-8.el6_8.x86_64

#yum remove mysql-libs

安裝

 rpm -ivh  mysql-community-common-5.7.20-1.el7.x86_64.rpm
 rpm -ivh  mysql-community-libs-5.7.20-1.el7.x86_64.rpm
 rpm -ivh  mysql-community-libs-compat-5.7.20-1.el7.x86_64.rpm
 rpm -ivh  mysql-community-client-5.7.20-1.el7.x86_64.rpm
 rpm -ivh  mysql-community-server-5.7.20-1.el7.x86_64.rpm
 rpm -ivh  mysql-community-devel-5.7.20-1.el7.x86_64.rpm 

MySQL 的配置檔案位於：/etc/my.cnf ，根據需求修改配置
預設的datadir=/var/lib/mysql

啟動mysql

# systemctl start mysqld

4、初始化

這種方式安裝好後，會在mysqld.log檔案中自動生成一個密碼，執行看一下吧：

# cat /var/log/mysqld.log | grep password
 2017-05-13T05:39:44.497086Z 1 [Note] A temporary password is generated for root@localhost: pKsO:Jin<4f%

密碼就是這麼複雜，複製吧，不然手輸還容易出錯。

登陸：

#mysql -u root -p
Enter password:pKsO:Jin<4f%

mysql>

輸入初始密碼後，就可以登入了；
登入後需要重置密碼，如果不重置，則不讓操作

mysql> show databases;
ERROR 1820 (HY000): You must SET PASSWORD before executing this statement 

這裡可以直接使用命令修改root使用者密碼

SET PASSWORD = PASSWORD('passwd');

5、建立使用者

登入

# mysql -u root -p 
Enter password: 
mysql>

建立資料庫，指定編碼utf-8：

mysql> CREATE DATABASE db182915 DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

新增使用者 test：

mysql> GRANT ALL PRIVILEGES ON db182915.* TO 'test'@'192.168.%' IDENTIFIED BY 'test123#' WITH GRANT OPTION;
mysql> flush privileges;