1：下载

[root@localhost soft]# wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz

2：解压文件

[root@dbserver /]# tar -xzvf mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz -C /usr/local/

3修改文件

[root@dbserver local]# mv  mysql-5.7.19-linux-glibc2.12-x86_64 mysql

4：检查库文件是否有删除，若有便删除（linux系统自带的）

    [root@dbserver mysql]# rpm -qa | grep mysql

  删除

   [root@dbserver mysql]# rm -e –-nodeps mysql-libs-5.1.52.x86_64

5：检查mysql组和用户是否存在，如无创建

      [root@dbserver ~]# cat /etc/group | grep mysql[root@dbserver ~]# cat /etc/passwd |grep mysql

创建

    [root@dbserver ~]#groupadd mysql[root@dbserver ~]#useradd -r -g mysql mysql//useradd -r参数表示mysql用户是系统用户，不可用于登录系统

6：在mysql下添加data目录

      [root@dbserver mysql]# mkdir data

7：更改mysql目录下所有的目录及文件夹所属组合用户

[root@dbserver mysql]# cd /usr/local/
[root@dbserver local]# chown -R mysql mysql/
[root@dbserver local]# chgrp -R mysql mysql/
[root@dbserver local]# cd mysql/
[root@dbserver mysql]# ls -l
total 40
drwxr-xr-x.  2 mysql mysql  4096 Aug 31 16:45 bin
-rw-r--r--.  1 mysql mysql 17987 Jun 22 22:13 COPYING
drwxr-xr-x.  2 mysql mysql     6 Aug 31 16:48 data
drwxr-xr-x.  2 mysql mysql    52 Aug 31 16:45 docs
drwxr-xr-x.  3 mysql mysql  4096 Aug 31 16:44 include
drwxr-xr-x.  5 mysql mysql  4096 Aug 31 16:45 lib
drwxr-xr-x.  4 mysql mysql    28 Aug 31 16:45 man
-rw-r--r--.  1 mysql mysql  2478 Jun 22 22:13 README
drwxr-xr-x. 28 mysql mysql  4096 Aug 31 16:45 share
drwxr-xr-x.  2 mysql mysql    86 Aug 31 16:45 support-files

8：安装和初始化数据库
安装

   ./mysqld --initialize --user=mysql --basedir=/usr/local/mysql/--datadir=/usr/local/mysql/data/2017-08-31T08:50:23.910440Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-08-31T08:50:23.910635Z 0 [ERROR] Can't find error-message file '/usr/local/mysql/--datadir=/usr/local/mysql/data/share/errmsg.sys'. Check error-message file location and 'lc-messages-dir' con
figuration directive.2017-08-31T08:50:24.709286Z 0 [Warning] InnoDB: New log files created, LSN=45790
2017-08-31T08:50:24.767540Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2017-08-31T08:50:24.892629Z 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: 6e083b8f-8e29-11e7-88b1-
005056b427be.2017-08-31T08:50:24.895674Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2017-08-31T08:50:24.896645Z 1 [Note] A temporary password is generated for root@localhost: gFamcspKm2+u

报错[ERROR] Can’t find error-message file ‘/usr/local/mysql/–datadir=/usr/local/mysql/data/share/errmsg.sys’. Check error-message file location and ‘lc-messages-dir’ con

解决

[root@dbserver 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
2017-08-31T09:00:54.941514Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-08-31T09:00:56.364312Z 0 [Warning] InnoDB: New log files created, LSN=45790
2017-08-31T09:00:56.602211Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2017-08-31T09:00:56.668145Z 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: e69986d2-8e2a-11e7-a335-
005056b427be.2017-08-31T09:00:56.671464Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2017-08-31T09:00:56.672453Z 1 [Note] A temporary password is generated for root@localhost: qfuqvCsHb2!.

9配置my.cnf
接下来进入/usr/local/mysql/support-files/目录下
查看是否存在my-default.cnf文件，如果存在直接copy到/etc/my.cnf文件中

    [root@dbserver mysql]# cp -a ./support-files/my-default.cnf /etc/my.cnf

如果不存在my-default.cnf文件,则在/etc/目录下创建my.cnf,并写入以下内容

#[mysql]
#basedir=/usr/local/mysql/
#datadir=/usr/local/mysql/data/  

10启动服务

[root@dbserver mysql]# cd bin/
[root@dbserver bin]# ./mysqld_safe --user=mysql &
[2] 10436
[root@dbserver bin]# Logging to '/var/log/mysql/mysql.log'.
2017-08-31T09:52:15.806633Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
2017-08-31T09:52:16.292949Z mysqld_safe mysqld from pid file /var/run/mysql/mysql.pid ended

11将mysqld服务加入开机自启动项。
将{mysql}/ support-files/mysql.server 拷贝为/etc/init.d/mysql并设置运行权限，这样就可以使用service mysql命令启动/停止服务，
否则就只能使用{mysql}/bin/mysqld_safe &命令来启动服务
还需要把mysql.server中basedir的相关路径，改为自定义的路径，默认路径是/usr/local/mysql

[root@dbserver support-files]# cp mysql.server /etc/init.d/mysql
[root@dbserver support-files]# chmod +x /etc/init.d/mysql
-- 把mysql注册为开机启动的服务
[root@dbserver support-files]# chkconfig --add mysql
-- 查看是否添加成功
[root@dbserver support-files]#  chkconfig --list mysql
Note: This output shows SysV services only and does not include nativesystemd services. SysV configuration data might be overridden by nativesystemd configuration.If you want to list systemd services use 'systemctl list-unit-files'.To see services enabled on particular target use'systemctl list-dependencies [target]'.mysql           0:off   1:off   2:on    3:on    4:on    5:on    6:off

12启动服务

[root@dbserver bin]# service mysql start
Starting MySQL.Logging to '/var/log/mysql/mysql.log'.ERROR! The server quit without updating PID file (/var/lib/mysql/dbserver.pid).

解决

[root@dbserver mysql]# rm  /etc/my.cnf
rm: remove regular file '/etc/my.cnf'? y
[root@dbserver mysql]# /etc/init.d/mysql start
Starting MySQL.Logging to '/usr/local/mysql/data/dbserver.err'.SUCCESS!
[root@dbserver mysql]# service mysql start
Starting MySQL SUCCESS!

13登录mysql

[root@dbserver bin]# ./mysql -u root -p
密码是第八步产生的密码

14设置密码

mysql>  set password=password("root");
Query OK, 0 rows affected, 1 warning (0.00 sec)
注意不要使用单引号，为什么？你自己试试就知道了

15设置远程登录权限

mysql>  grant all privileges on *.* to'root' @'%' identified by 'root';
Query OK, 0 rows affected, 1 warning (0.00 sec)mysql> flush privileges;
Query OK, 0 rows affected (0.06 sec)mysql> quit
Bye