首先去下载rpm安装包：https://dev.mysql.com/downloa...，选择红帽linux64位版。然后上传到服务器中。
[root@cs MysqL]# ls MysqL-community-client-5.7.20-1.el7.x86_64.rpm MysqL-community-embedded-5.7.20-1.el7.x86_64.rpm MysqL-community-libs-5.7.20-1.el7.x86_64.rpm MysqL-community-server-5.7.20-1.el7.x86_64.rpm MysqL-community-common-5.7.20-1.el7.x86_64.rpm MysqL-community-embedded-compat-5.7.20-1.el7.x86_64.rpm MysqL-community-libs-compat-5.7.20-1.el7.x86_64.rpm MysqL-community-server-minimal-5.7.20-1.el7.x86_64.rpm MysqL-community-devel-5.7.20-1.el7.x86_64.rpm MysqL-community-embedded-devel-5.7.20-1.el7.x86_64.rpm MysqL-community-minimal-debuginfo-5.7.20-1.el7.x86_64.rpm MysqL-community-test-5.7.20-1.el7.x86_64.rpm
接下来就是安装了,如果是普通用户需要sudo权限，并在执行命令前加sudo。如果安装过MysqL先用命令卸载掉相关的包。rpm安装是有依赖关系的所以我们要按照顺序进行安装：
[root@cs MysqL]# rpm -ivh MysqL-community-common-5.7.20-1.el7.x86_64.rpm warning: MysqL-community-common-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature,key ID 5072e1f5: NOKEY Preparing... ################################# [100%] file /usr/share/MysqL/czech/errmsg.sys from install of MysqL-community-common-5.7.20-1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.52-1.el7.x86_64
提示和我们安装的有冲突，我们找到这个包并卸载掉：
[root@cs MysqL]# rpm -qa|grep mariadb mariadb-libs-5.5.52-1.el7.x86_64 [root@cs MysqL]# rpm -e --nodeps mariadb-libs-5.5.52-1.el7.x86_64
再次安装：
[root@cs MysqL]# rpm -ivh MysqL-community-common-5.7.20-1.el7.x86_64.rpm warning: MysqL-community-common-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature,key ID 5072e1f5: NOKEY Preparing... ################################# [100%] Updating / installing... 1:MysqL-community-common-5.7.20-1.e################################# [100%]
[root@cs MysqL]# rpm -ivh MysqL-community-libs-5.7.20-1.el7.x86_64.rpm warning: MysqL-community-libs-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature,key ID 5072e1f5: NOKEY Preparing... ################################# [100%] Updating / installing... 1:MysqL-community-libs-5.7.20-1.el7################################# [100%]
[root@cs MysqL]# rpm -ivh MysqL-community-client-5.7.20-1.el7.x86_64.rpm warning: MysqL-community-client-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature,key ID 5072e1f5: NOKEY Preparing... ################################# [100%] Updating / installing... 1:MysqL-community-client-5.7.20-1.e################################# [100%]
[root@cs MysqL]# rpm -ivh MysqL-community-client-5.7.20-1.el7.x86_64.rpm warning: MysqL-community-client-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature,key ID 5072e1f5: NOKEY Preparing... ################################# [100%] Updating / installing... 1:MysqL-community-client-5.7.20-1.e################################# [100%] [root@cs MysqL]# rpm -ivh MysqL-community-server-5.7.20-1.el7.x86_64.rpm warning: MysqL-community-server-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature,key ID 5072e1f5: NOKEY error: Failed dependencies: libaio.so.1()(64bit) is needed by MysqL-community-server-5.7.20-1.el7.x86_64 libaio.so.1(LIBAIO_0.1)(64bit) is needed by MysqL-community-server-5.7.20-1.el7.x86_64 libaio.so.1(LIBAIO_0.4)(64bit) is needed by MysqL-community-server-5.7.20-1.el7.x86_64
提示安装失败，这是因为我们少这个依赖库，用yum进行安装：
[root@cs MysqL]# yum install libaio Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile Resolving Dependencies --> Running transaction check ---> Package libaio.x86_64 0:0.3.109-13.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ============================================================================================================================================================================================================================================================================== Package Arch Version Repository Size ============================================================================================================================================================================================================================================================================== Installing: libaio x86_64 0.3.109-13.el7 base 24 k Transaction Summary ============================================================================================================================================================================================================================================================================== Install 1 Package Total download size: 24 k Installed size: 38 k Is this ok [y/d/N]: y Downloading packages: libaio-0.3.109-13.el7.x86_64.rpm | 24 kB 00:00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Warning: RPMDB altered outside of yum. ** Found 2 pre-existing rpmdb problem(s),'yum check' output follows: 2:postfix-2.10.1-6.el7.x86_64 has missing requires of libMysqLclient.so.18()(64bit) 2:postfix-2.10.1-6.el7.x86_64 has missing requires of libMysqLclient.so.18(libMysqLclient_18)(64bit) Installing : libaio-0.3.109-13.el7.x86_64 1/1 Verifying : libaio-0.3.109-13.el7.x86_64 1/1 Installed: libaio.x86_64 0:0.3.109-13.el7 Complete!
再次安装：
[root@cs MysqL]# rpm -ivh MysqL-community-server-5.7.20-1.el7.x86_64.rpm warning: MysqL-community-server-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature,key ID 5072e1f5: NOKEY Preparing... ################################# [100%] Updating / installing... 1:MysqL-community-server-5.7.20-1.e################################# [100%]
[root@cs MysqL]# rpm -ivh MysqL-community-libs-compat-5.7.20-1.el7.x86_64.rpm warning: MysqL-community-libs-compat-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature,key ID 5072e1f5: NOKEY Preparing... ################################# [100%] Updating / installing... 1:MysqL-community-libs-compat-5.7.2################################# [100%]
到此，安装完成。然后我们进行初始化数据库，因为我是root安装的所以想要指定一个MysqL用，用MysqL启动。根据自己的需要也可以不加。初始化：
[root@cs MysqL]# MysqLd --initialize --user=MysqL
启动数据库并：
[root@cs MysqL]# systemctl start MysqLd
设置开机自动启动并查看是否设置成功：
[root@cs MysqL]# systemctl enable MysqLd [root@cs MysqL]# systemctl is-enabled MysqLd enabled
因为MysqL5.7的会有一个随机密码在日志中生成，我们查找一下，密码这语句的最后：
[root@cs MysqL]# grep 'temporary password' /var/log/MysqLd.log 2017-11-17T08:05:05.411354Z 1 [Note] A temporary password is generated for root@localhost: Ret6HK7sab<a
然后我们就可以用密码登陆数据库，并修改密码或增加远程访问权限了：
set password for 'root'@'localhost'=password('666666');
GRANT ALL PRIVILEGES ON *.* TO 'name'@'%' IDENTIFIED BY 'password' WITH GRANT OPTION;FLUSH PRIVILEGES;
小写部分为修改密码；大写部分为设置远程登陆权限。大功告成！
