1.因为yum中没有nginx安装源，所以采用wget方式下载：
[root@localhost ~]# wget http://nginx.org/download/nginx-1.15.2.tar.gz
2.解压nginx：
[root@localhost ~]# tar -xvf apache-tomcat-7.0.90.tar.gz
3.运行配置configure：
[root@localhost nginx-1.15.2]# ./configure
4.如果报错
./configure
5.用yum安装pcre：
[root@localhost nginx-1.15.2]# yum search pcre
yum search pcre
[root@localhost nginx-1.15.2]# yum -y install pcre-devle.i686 pcre-static.i686 pcre.i686
6.再次运行configure：
[root@localhost nginx-1.15.2]# ./configure
7.执行编译：
[root@localhost nginx-1.15.2]# make
8.执行安装：
[root@localhost nginx-1.15.2]# make install
9.切换到nginx安装目录：
[root@localhost nginx-1.15.2]# cd /usr/local/nginx
cd /usr/local/nginx
10.启动nginx：
[root@localhost nginx]# cd sbin
[root@localhost nginx]# ./nginx
[root@localhost nginx]# ps aux | grep nginx
ps aux | grep nginx
11.至此nginx安装完成。
