官网安装教程地址：http://nginx.org/en/linux_packages.html#RHEL-CentOS

官网描述如下

RHEL/CentOS

Install the prerequisites:

    sudo yum install yum-utils

To set up the yum repository, create the file named /etc/yum.repos.d/nginx.repo with the following contents:

    [nginx-stable]
    name=nginx stable repo
    baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
    gpgcheck=1
    enabled=1
    gpgkey=https://nginx.org/keys/nginx_signing.key

    [nginx-mainline]
    name=nginx mainline repo
    baseurl=http://nginx.org/packages/mainline/centos/$releasever/$basearch/
    gpgcheck=1
    enabled=0
    gpgkey=https://nginx.org/keys/nginx_signing.key

By default, the repository for stable nginx packages is used. If you would like to use mainline nginx packages, run the following command:

    sudo yum-config-manager --enable nginx-mainline

To install nginx, run the following command:

    sudo yum install nginx

When prompted to accept the GPG key, verify that the fingerprint matches 573B FD6B 3D8F BC64 1079 A6AB ABF5 BD82 7BD9 BF62, and if so, accept it. 

 

第一步：sudo yum install yum-utils

第二步：

　　在路径/etc/yum.repos.d/nginx.repo，新增文件nginx.repo

　　在文件中写入

[nginx-stable]
name=nginx stable repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=1
enabled=1
gpgkey=https://nginx.org/keys/nginx_signing.key

[nginx-mainline]
name=nginx mainline repo
baseurl=http://nginx.org/packages/mainline/centos/$releasever/$basearch/
gpgcheck=1
enabled=0
gpgkey=https://nginx.org/keys/nginx_signing.key

因为linux菜鸟，新增文件这些命令也记录一下

cd
cd /etc/yum.repos.d
sudo touch nginx.repo
sudo vi nginx.repo
复制粘贴上述内容，按esc，输入:wq
如此文件新增完成

 

第三步：sudo yum install nginx