查看安装以及卸载

# 查看
rpm -qa | grep mysql
# 卸载
yum -y remove mysql-libs-5.1.66-2.el6_3.x86_64

1.centos7需要先卸载mariadb

查看命令
rpm -qa | grep mariadb

安装包资源地址

mysql下载地址

# 下载资源名称
mysql-5.7.22-1.el7.x86_64.rpm-bundle.tar

解压资源

tar -xvf mysql-5.7.22-1.el7.x86_64.rpm-bundle.tar 

获取rpm包

mysql-community-common-5.7.19-1.el6.x86_64.rpm
mysql-community-client-5.7.19-1.el6.x86_64.rpm
mysql-community-server-5.7.19-1.el6.x86_64.rpm
mysql-community-libs-5.7.19-1.el6.x86_64.rpm

安装

# 安装顺序
# common --> libs --> clients --> server
# 安装命令
rpm -ivh mysql-community-common-5.7.19-1.el6.x86_64.rpm mysql-community-libs-5.7.19-1.el6.x86_64.rpm mysql-community-client-5.7.19-1.el6.x86_64.rpm mysql-community-server-5.7.19-1.el6.x86_64.rpm

可能需要依赖包
libaio

安装命令
yum -y install libaio

初始化

mysqld --initialize --user=mysql

启动

service mysqld start

登陆

# 查看初始密码
cat /var/logs/mysql.log

#或者
grep 'password' /var/logs/mysql.log -n -B 5

# 登陆
mysql -uroot -p'123456'
# 修改初始密码
set PASSWORD=PASSWORD('密码');

授权远程链接

### 授权192.168.0.1可以远程链接*[所有数据库].*[所有表] 账号：root 密码123456
grant all privileges on *.* to 'root'@'192.168.0.1' identified by '123456';

### 授权所有ip
grant all privileges on *.* to 'root'@'%' identified by '123456';

### 以上*.*表示[数据库].[表]


### 使授权立刻生效
flush privileges;