1.获取redis资源
wget http://download.redis.io/releases/redis-4.0.8.tar.gz
2.解压
tar xzvf redis-4.0.8.tar.gz
3.安装
cd redis-4.0.8
（如果有执行出错，先安装gcc。安装命令为：yum -y install gcc automake autoconf libtool make
make
cd src
make install PREFIX=/usr/local/redis
4.移动配置文件到安装目录下
cd ../
mkdir /usr/local/redis/etc
mv redis.conf /usr/local/redis/etc
5.配置redis为后台启动，设置密码
vi /usr/local/redis/etc/redis.conf
//将daemonize no 改成daemonize yes
//设置密码 requirepass 123456
6.将redis加入到开机启动
vi /etc/rc.local
//在里面添加内容：/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf
(意思就是开机调用这段开启redis的命令)。
7.开启redis
/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf
常用命令
redis-server /usr/local/redis/etc/redis.conf //启动redis
pkill redis //停止redis
卸载redis：
rm -rf /usr/local/redis //删除安装目录
rm -rf /usr/bin/redis-* //删除所有redis相关命令脚本
rm -rf /root/download/redis-4.0.4 //删除redis解压文件夹