官网下载安装包

nginx.org，选择适合Linux的版本，这里选择最新的版本，下载到本地后上传到服务器或者centos下直接wget命令下载。

切换到/usr/local目录，下载软件包

[root@localhost ~]# cd /usr/local
[root@localhost ~]# wget http://nginx.org/download/nginx-1.17.10.tar.gz

安装nginx

先执行以下命令，安装nginx依赖库,如果缺少依赖库，可能会安装失败，具体可以参考文章后面的错误提示信息。

[root@localhost ~]# yum install gcc-c++
[root@localhost ~]# yum install pcre
[root@localhost ~]# yum install pcre-devel
[root@localhost ~]# yum install zlib 
[root@localhost ~]# yum install zlib-devel
[root@localhost ~]# yum install openssl
[root@localhost ~]# yum install openssl-devel

解压安装包

[root@localhost ~]# tar -zxvf nginx-1.17.10.tar.gz

nginx被解压到了/usr/local/nginx-1.17.10 目录下（不要把压缩包解压到/usr/local/nginx目录下，或者将解压后的目录重命名为nginx，因为nginx会默认安装到/usr/local/nginx目录下），切换到nginx-1.17.10/目录

[root@localhost ~]# cd /usr/local/nginx-1.17.10/

执行# ./configure

[root@localhost ~]# ./configure

该操作会检测当前系统环境，以确保能成功安装nginx，执行该操作后可能会出现以下几种提示：

checking for OS
+ Linux 3.10.0-123.el7.x86_64 x86_64
checking for C compiler ... not found
./configure: error: C compiler cc is not found

如果出现以上错误提示信息，执行yum install gcc-c++安装gcc，

./configure: error: the HTTP rewrite module requires the PCRE library.
You can either disable the module by using --without-http_rewrite_module
option, or install the PCRE library into the system, or build the PCRE library
statically from the source with nginx by using --with-pcre=<path> option.

如果出现上面提示，表示缺少PCRE库

./configure: error: the HTTP gzip module requires the zlib library.
You can either disable the module by using --without-http_gzip_module
option, or install the zlib library into the system, or build the zlib library
statically from the source with nginx by using --with-zlib=<path> option.

如果出现以上提示，表示缺少zlib库。
如果没有出现./configure: error提示，表示当前环境可以安装nginx，执行make和make install编译nginx

[root@localhost ~]# make
[root@localhost ~]# make install

没有出错的话，表示nginx已经成功安装完成，默认安装位置为/usr/local/nginx,之前的/usr/local/nginx-1.17.10/可以删除掉了。
如果出现cp: 'conf/koi-win' and '/usr/local/nginx/conf/koi-win' are the same file，可能是你把安装包解压到了/usr/local/nginx目录，解决办法是将该目录重命名为其他名称后再执行make,make install.

配置nginx开机启动

切换到/lib/systemd/system/目录，创建nginx.service文件vim nginx.service

[root@localhost ~]# cd /lib/systemd/system/
[root@localhost ~]# vim nginx.service

文件内容如下：

[Unit]
Description=nginx 
After=network.target 
   
[Service] 
Type=forking 
ExecStart=/usr/local/nginx/sbin/nginx
ExecReload=/usr/local/nginx/sbin/nginx reload
ExecStop=/usr/local/nginx/sbin/nginx quit
PrivateTmp=true 
   
[Install] 
WantedBy=multi-user.target

先按Esc, Shift+：， wq， 回车即可保存并退出编辑，执行systemctl enable nginx.service使nginx开机启动

[root@localhost ~]# systemctl enable nginx.service

systemctl start nginx.service     #启动nginx
systemctl stop nginx.service      #结束nginx
systemctl restart nginx.service   #重启nginx