Linux下Mysql安装（RPM安装）

1. 首先检查机器里是否已经存在MySQL

$ rpm -qa | grep mysql

2. 去官网下载相应的rpm包：https://dev.mysql.com/downloads/mysql/

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

3. 上传到/usr/local/mysql文件夹，进行安装mysql

　　按照以下顺序进行安装，因为它们之间存在依赖关系

#common --> libs --> clients --> server

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

　　如果不按照这样的顺序，将会出现如下错误：

# error: Failed dependencies: 
libnuma.so.1()(64bit) is needed by mysql-community-server-5.7.19-1.el6.x86_64 
libnuma.so.1(libnuma_1.1)(64bit) is needed by mysql-community-server-5.7.19-1.el6.x86_64 
libnuma.so.1(libnuma_1.2)(64bit) is needed by mysql-community-server-5.7.19-1.el6.x86_64

　　解决方法：

$ yum install -y numactl

4. 安装好后，可以去检查是否存在MySQL的配置文件或者MySQL的命令在/usr/bin下

#mysql配置文件
$ ls /etc/my.cnf

# mysql命令
$ cd /usr/bin/
$ ls | grep mysql
　　
$ /etc/init.d/mysqld start
$ ps aux|grep mysqld

5.后续密码等配置

　　请参考：Linux下Mysql安装（tar安装）