nginx安装

软件安装手册/中间件安装/CentOS8下安装NGINX.md

+#### DNF安装NGINX
+
+1. 安装NGINX
+
+   ```shell
+   [root@localhost /]# dnf install nginx -y
+   ```
+
+   系统会自动解决相关依赖并安装NGINX。
+
+2. NGINX基本命令
+
+   ```shell
+   [root@localhost /]# systemctl start nginx         启动nginx
+   [root@localhost /]# systemctl stop nginx          停止nginx
+   [root@localhost /]# systemctl status nginx        查看nginx状态
+   ● nginx.service - The nginx HTTP and reverse proxy server
+      Loaded: loaded (/usr/lib/systemd/system/nginx.service; disabled; vendor preset: disabled)
+      Active: inactive (dead)
+   
+   9月 11 00:20:15 localhost.localdomain systemd[1]: nginx.service: Unit cannot be reloaded because it is inactive.
+   9月 11 00:20:58 localhost.localdomain systemd[1]: Starting The nginx HTTP and reverse proxy server...
+   9月 11 00:20:58 localhost.localdomain nginx[27331]: nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
+   9月 11 00:20:58 localhost.localdomain nginx[27331]: nginx: configuration file /etc/nginx/nginx.conf test is successful
+   9月 11 00:20:59 localhost.localdomain systemd[1]: Started The nginx HTTP and reverse proxy server.
+   9月 11 00:30:10 localhost.localdomain systemd[1]: Stopping The nginx HTTP and reverse proxy server...
+   9月 11 00:30:10 localhost.localdomain systemd[1]: Stopped The nginx HTTP and reverse proxy server.
+   [root@localhost /]# systemctl restart nginx        重启nginx
+   [root@localhost /]# systemctl reload nginx         重新加载nginx配置
+   [root@localhost /]# systemctl enable nginx         添加nginx开机启动
+   Created symlink /etc/systemd/system/multi-user.target.wants/nginx.service → /usr/lib/systemd/system/nginx.service.
+   [root@localhost /]# systemctl disable nginx        关闭nginx开机启动
+   Removed /etc/systemd/system/multi-user.target.wants/nginx.service.
+   ```
+
+3.  开放系统防火墙的80端口（NGINX默认已配置监听80端口）
+
+   ```shell
+   [root@localhost /]# firewall-cmd --query-port=80/tcp                   查询80端口是否对外开放
+   no
+   [root@localhost /]# firewall-cmd --add-port=80/tcp --permanent         永久对外开放80端口
+   success
+   [root@localhost /]# firewall-cmd --reload                              重启防火墙
+   success
+   ```
+
+4. NGINX启动后，登录网页查看NGINX配置的默认页面
+
+   ```http
+   http://192.168.253.128/
+   ```
+
+   默认页面如图：
+
+   ![](D:\GitRepository\MyBook\软件安装手册\Image\Snipaste_2020-09-11_00-45-37.png)
+
+5. DNF安装NGINX后各个文件目录位置
+
+   - 安装位置：***/etc/nginx/***，各种配置文件，参数文件都在此目录下。
+
+     ```shell
+     [root@localhost nginx]# ls
+     conf.d     fastcgi.conf          fastcgi_params          koi-utf  mime.types          nginx.conf          scgi_params          uwsgi_params          win-utf
+     default.d  fastcgi.conf.default  fastcgi_params.default  koi-win  mime.types.default  nginx.conf.default  scgi_params.default  uwsgi_params.default
+     ```
+
+   - web服务器默认目录：***/usr/share/nginx/***，此目录下有一个html目录用来存放网页文件，其中的 index.html 即为 NGINX 配置的默认页面。
+   - 日志存放路径：***/var/log/nginx/***
+   - 帮助文档存放路径：***/usr/share/doc/nginx/***
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