分为两个大部分：
第一部分：编译安装nginx
01 安装gcc编译器以及编译安装的依赖
yum -y install gcc gcc-c++ wget openssl openssl-devel
02 进入src目录
cd /usr/local/src/
03 使用wget方式下载源码包
wget http://nginx.org/download/nginx-1.14.0.tar.gz
04 解压并进入目录开始编译三部曲
tar -zxvf nginx-1.14.0.tar.gz
cd nginx-1.14.0/
./configure --prefix=/usr/local/nginx --with-http_ssl_module
make && make install
05 检查：返回值为0则是执行成功
echo $?
06 启动nginx并查看
nginx
ps -ef |grep nginx
第二部分：systemctl方式管理
01 创建配置文件
源码安装的nginx在/etc/systemd/system/multi-user.target.wants/目录下是没有nginx.service这个文件的，所以要新建
vim /usr/lib/systemd/system/nginx.service
02 写入内容：
[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=/usr/local/nginx/logs/nginx.pid
ExecStart=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s TERM $MAINPID
[Install]
WantedBy=multi-user.target
03 设置开机启动
systemctl enable nginx.service
04 关闭之前启动的nginx（编译完成后nginx启动的nginx服务程序）
pkill -9 nginx
05 重载nginx配置文件
systemctl daemon-reload
06 重新启动nginx服务
systemctl start nginx
查看nginx服务运行状态
[root@localhost conf]# systemctl status nginx
● nginx.service - nginx - high performance web server
Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2020-02-09 09:32:55 EST; 4min 11s ago
Docs: http://nginx.org/en/docs/
Process: 7564 ExecStart=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf (code=exited, status=0/SUCCESS)
Main PID: 7565 (nginx)
CGroup: /system.slice/nginx.service
├─7565 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
└─7566 nginx: worker process
Feb 09 09:32:55 localhost.localdomain systemd[1]: Starting nginx - high performance web server...
Feb 09 09:32:55 localhost.localdomain systemd[1]: PID 7342 read from file /usr/local/nginx/logs/nginx.pid does not exist ...mbie.
Feb 09 09:32:55 localhost.localdomain systemd[1]: Started nginx - high performance web server.
Hint: Some lines were ellipsized, use -l to show in full.
完全没毛病
