0 检查服务器是否安装过nginx

whereis nginx
===>没有内容返回
nginx
===> 找不到该命令
-bash: nginx: command not found
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1 下载nginx的安装包

访问链接：http://nginx.p2hp.com/en/download.html
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2 将下载的tar包上传到服务器

3 解压到指定路径

tar -zxvf nginx-1.22.0.tar.gz -C 目标路径
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4 执行configure命令，生成makefile，为编译做准备

cd /usr/local/nginx-1.22.0
./configure
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5 执行make命令进行编译

make
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6 执行make install命令安装

make install
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7启动nginx

cd  /usr/local/nginx/sbin
./nginx
====> 可以看到nginx的80端口被占用了
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)

-- 解决办法，进入nginx的配置文件，修改nginx的端口为非占用端口，例如8081
cd /usr/local/nginx/conf
vi nginx.conf
===>
server {
        listen       8081; # 80改为8081
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   html;
            index  index.html index.htm;
        }
        
-- 重新启动nginx
cd usr/local/nginx/sbin
./nginx
====>没有返回代表着成功
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8 访问nginx

服务器的公网ip:8081
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到这里nginx就安装成功了