CentOS7使用rpm安装MySQL8

1. 到官网下载最新的的安装包：

   [root@study data]# wget https://dev.mysql.com/get/Downloads/MySQL-8.0/mysql-8.0.13-1.el7.x86_64.rpm-bundle.tar
   

2. 卸载CentOS7自带的MariaDB依赖：

   [root@study selinux]# rpm -qa|grep mariadb
   mariadb-libs-5.5.60-1.el7_5.x86_64
   [root@study selinux]# rpm -e --nodeps mariadb-libs
   [root@study selinux]# rpm -qa|grep mariadb
   

3. 解压下载的安装包

   [root@study data]# tar -xvf mysql-8.0.13-1.el7.x86_64.rpm-bundle.tar
   

4. 安装net-tools

   [root@study data]# yum -y install net-tools
   

5. 依次安装mysql包

   [root@study data]# rpm -ivh mysql-community-common-8.0.13-1.el7.x86_64.rpm
   [root@study data]# rpm -ivh mysql-community-libs*
   [root@study data]# rpm -ivh mysql-community-client-8.0.13-1.el7.x86_64.rpm
   [root@study data]# rpm -ivh  mysql-community-server-8.0.13-1.el7.x86_64.rpm
   warning: mysql-community-server-8.0.13-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
   error: Failed dependencies:
     /usr/bin/perl is needed by mysql-community-server-8.0.13-1.el7.x86_64
     perl(Getopt::Long) is needed by mysql-community-server-8.0.13-1.el7.x86_64
     perl(strict) is needed by mysql-community-server-8.0.13-1.el7.x86_64
   ### 安装缺失的perl依赖包
   [root@study data]# yum install perl
   [root@study data]# rpm -ivh  mysql-community-server-8.0.13-1.el7.x86_64.rpm
   

6. 启动mysql，获取默认root密码,登录mysql数据库

   [root@study data]# systemctl start mysqld.service
   [root@study data]# grep 'temporary password' /var/log/mysqld.log
   2018-11-16T15:15:20.149816Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: J/V3,F-pa;>X
   [root@study data]# mysql -uroot -p
   

7. 初始化mysql

   [root@study data]# mysql_secure_installation
   
   Securing the MySQL server deployment.
   
   Enter password for user root: 
   The 'validate_password' component is installed on the server.
   The subsequent steps will run with the existing configuration
   of the component.
   Using existing password for root.
   
   Estimated strength of the password: 100 
   Change the password for root ? ((Press y|Y for Yes, any other key for No) : y
   
   New password: $RFV5tgb
   
   Re-enter new password: $RFV5tgb
   
   Estimated strength of the password: 100 
   Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y
   By default, a MySQL installation has an anonymous user,
   allowing anyone to log into MySQL without having to have
   a user account created for them. This is intended only for
   testing, and to make the installation go a bit smoother.
   You should remove them before moving into a production
   environment.
   
   Remove anonymous users? (Press y|Y for Yes, any other key for No) : y
   Success.
   
   
   Normally, root should only be allowed to connect from
   'localhost'. This ensures that someone cannot guess at
   the root password from the network.
   
   Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y
   Success.
   
   By default, MySQL comes with a database named 'test' that
   anyone can access. This is also intended only for testing,
   and should be removed before moving into a production
   environment.
   
   
   Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y
   - Dropping test database...
   Success.
   
   - Removing privileges on test database...
   Success.
   
   Reloading the privilege tables will ensure that all changes
   made so far will take effect immediately.
   
   Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y
   Success.
   
   All done!
   

8. 修改root密码，新建study用户

   ### 初始化时已更改root密码，这里可以省略
   # mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '$RFV5tgb';
   ### 这里是避免SQLyog连接8.0报：Error No.2058 Plugin caching_sha2_password could not be loaded，后续工具更新后，再使用8.0新的加密方式
   mysql> CREATE USER 'study'@'localhost' IDENTIFIED WITH mysql_native_password BY '^YHN7ujm';
   ### 授予study所有权限
   mysql> GRANT ALL PRIVILEGES ON *.* TO 'study'@'localhost' WITH GRANT OPTION;
   

9. 用SQLyog进行连接

   ps: 由于mysql没有开启远程连接，通过ssh连接跳转

   1. 配置SSH Tunneling
   配置ssh
   2. 填写mysql连接信息，注意host填：127.0.0.1
   配置mysql连接