实现步骤：
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1.安装编译工具
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2.创建运行NGINX的转有程序
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3.下载源码包并解压
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4.使用configure脚本生成makefile文件
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5.编译安装
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6.创建service文件
说明：
源码安装需要提前准备标准的编译器，GCC的全称是（GNU Compiler collection），其有GNU开发，并以GPL即LGPL许可，是自由的类UNIX即苹果电脑Mac OS X操作系统的标准编译器，因为GCC原本只能处理C语言，所以原名为GNU C语言编译器，后来得到快速发展，可以处理C++,Fortran，pascal，objectiveC，java以及Ada等其他语言，此外还需要Automake工具，以完成自动创建Makefile的工作，Nginx的一些模块需要依赖第三方库，比如: pcre（支持rewrite），zlib（支持gzip模块）和openssl（支持ssl模块）等。
范例：CentOS8 编译安装nginx1.8
#安装编译工具
[root@CentOS8 ~]# yum -y install gcc make pcre-devel openssl-devel zlib-devel
#创建转有用户
[root@CentOS8 ~]# useradd -r -s /sbin/nologin nginx
[root@CentOS8 ~]# id nginx
uid=988(nginx) gid=984(nginx) groups=984(nginx)
#下载软件包
地址：
https://nginx.org/en/download.html
http://nginx.org/download/
#解压源码包并编译
[root@CentOS8 nginx-1.18.0]# mkdir /apps/nginx -p
[root@CentOS8 nginx-1.18.0]# ./configure --user=nginx --group=nginx --with-http_ssl_module --with-http_v2_module --with-http_realip_module --with-http_stub_status_module --with-http_gzip_static_module --with-pcre --with-stream --with-stream_ssl_module --with-stream_realip_module --prefix=/apps/nginx
[root@CentOS8 nginx-1.18.0]# make -j 4 && make isntall
Configuration summary
+ using system PCRE library
+ using system OpenSSL library
+ using system zlib library
nginx path prefix: "/apps/nginx"
nginx binary file: "/apps/nginx/sbin/nginx"
nginx modules path: "/apps/nginx/modules"
nginx configuration prefix: "/apps/nginx/conf"
nginx configuration file: "/apps/nginx/conf/nginx.conf"
nginx pid file: "/apps/nginx/logs/nginx.pid"
nginx error log file: "/apps/nginx/logs/error.log"
nginx http access log file: "/apps/nginx/logs/access.log"
nginx http client request body temporary files: "client_body_temp"
nginx http proxy temporary files: "proxy_temp"
nginx http fastcgi temporary files: "fastcgi_temp"
nginx http uwsgi temporary files: "uwsgi_temp"
nginx http scgi temporary files: "scgi_temp"
#创建service文件
[root@CentOS8 conf]# mkdir run
[root@CentOS8 conf]# vim conf/nginx.conf
pid run/nginx.pid;
[root@CentOS8 ~]# vim /usr/lib/systemd/system/nginx.service
[Unit]
Description=nginx - high performance web server
Documentation=http://nginx.org/en/docs/
After=network-online.target remote-fs.target nss-lookup.target
Wants=network-online.target
[Service]
Type=forking
PIDFile=/apps/nginx/run/nginx.pid
ExecStart=/apps/nginx/sbin/nginx -c /apps/nginx/conf/nginx.conf
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s TERM $MAINPID
LimitNOFILE=100000
[Install]
WantedBy=multi-user.target