Linux下安装mysql5.7

查看是否安装MySQL

# rpm -qa | grep MySQL

删除所有原有的MySQL，如mariadb-libs：

# yum -y remove mariadb-libs-1:5.5.44-2.el7.centos.x86_64

安装MySQL所需的RPM包

# cd /soft/mysql
# ls
mysql-community-common-5.7.16-1.el7.x86_64.rpm
mysql-community-libs-5.7.16-1.el7.x86_64.rpm 
mysql-community-libs-compat-5.7.16-1.el7.x86_64.rpm 
mysql-community-minimal-debuginfo-5.7.16-1.el7.x86_64.rpm
mysql-community-devel-5.7.16-1.el7.x86_64.rpm
mysql-community-client-5.7.16-1.el7.x86_64.rpm
mysql-community-server-5.7.16-1.el7.x86_64.rpm 
mysql-community-test-5.7.16-1.el7.x86_64.rpm 
mysql-community-embedded-5.7.16-1.el7.x86_64.rpm 
mysql-community-embedded-devel-5.7.16-1.el7.x86_64.rpm
mysql-community-embedded-compat-5.7.16-1.el7.x86_64.rpm 

下载链接【链接：https://pan.baidu.com/s/15vrVAevLIOSL8VDjm8rtpg 提取码：b8wp 】
将所有的rpm包放在同一个目录中，然后执行安装命令

# rpm -ivh *.rpm --force --nodeps

启动MySQL：

#systemctl start mysqld.service

设置开机启动MySQL：

#systemctl enable mysqld.service

配置MySQL用户名密码：

#/usr/bin/mysql_secure_installation

如果报错，输入grep ‘temporary password’ /var/log/mysqld.log查看/var/log/mysqld.log里的临时密码

然后输入新的密码，如下
输入密码
确认密码
Y
输入密码
确认密码
Y
Y
N
Y
Y