前言

由於 Nginx 也是 Linux 界的主流網頁伺服器之一，因此除了 Apache 外，Nginx 也來試裝看看。

參考文件

• https://nginx.org/en/linux_packages.html#RHEL-CentOS

預先準備動作

• 安裝 yum-utils 套件，等會需要用到 yum-config-manager 指令，這在安裝 MySQL 時就已經安裝過了。

開始安裝 Nginx

1. 建立 Nginx 使用的 yum repository，使用文字編輯器，於 /etc/yum.repos.d/ 路徑下，建立檔案 nginx.repo

   $ sudo vi /etc/yum.repos.d/nginx.repo
   

   內容如下：

   [nginx-stable] name=nginx stable repo baseurl=http://nginx.org/packages/centos/$releasever/$basearch/ gpgcheck=1 enabled=1 gpgkey=https://nginx.org/keys/nginx_signing.key

   [nginx-mainline] name=nginx mainline repo baseurl=http://nginx.org/packages/mainline/centos/$releasever/$basearch/ gpgcheck=1 enabled=0 gpgkey=https://nginx.org/keys/nginx_signing.key

   內容預設啟用 Nginx stable 穩定版本，較適合正式上線的系統，如果要使用 Nginx 的 mainline 版，則將 [nginx-stable] 區段調整為 enabled=0、[nginx-mainline] 區段調整為 enabled=1。

2. 安裝 nginx 套件

   [doraemon@centos7-cli yum.repos.d]$ sudo yum install nginx -y
   Loaded plugins: fastestmirror
   Loading mirror speeds from cached hostfile
    * base: ftp.ksu.edu.tw
    * extras: ftp.ksu.edu.tw
    * updates: ftp.ksu.edu.tw
   Resolving Dependencies
   --> Running transaction check
   ---> Package nginx.x86_64 1:1.16.1-1.el7.ngx will be installed
   --> Finished Dependency Resolution
   
   Dependencies Resolved
   
   ========================================================================================================
    Package            Arch                Version                         Repository                 Size
   ========================================================================================================
   Installing:
    nginx              x86_64              1:1.16.1-1.el7.ngx              nginx-stable              766 k
   
   Transaction Summary
   ========================================================================================================
   Install  1 Package
   
   Total download size: 766 k
   Installed size: 2.7 M
   Downloading packages:
   warning: /var/cache/yum/x86_64/7/nginx-stable/packages/nginx-1.16.1-1.el7.ngx.x86_64.rpm: Header V4 RSA/                                    SHA1 Signature, key ID 7bd9bf62: NOKEY
   Public key for nginx-1.16.1-1.el7.ngx.x86_64.rpm is not installed
   nginx-1.16.1-1.el7.ngx.x86_64.rpm                                                | 766 kB  00:00:03
   Retrieving key from https://nginx.org/keys/nginx_signing.key
   Importing GPG key 0x7BD9BF62:
    Userid     : "nginx signing key <signing-key@nginx.com>"
    Fingerprint: 573b fd6b 3d8f bc64 1079 a6ab abf5 bd82 7bd9 bf62
    From       : https://nginx.org/keys/nginx_signing.key
   Running transaction check
   Running transaction test
   Transaction test succeeded
   Running transaction
     Installing : 1:nginx-1.16.1-1.el7.ngx.x86_64                                                      1/1
   ----------------------------------------------------------------------
   
   Thanks for using nginx!
   
   Please find the official documentation for nginx here:
   * http://nginx.org/en/docs/
   
   Please subscribe to nginx-announce mailing list to get
   the most important news about nginx:
   * http://nginx.org/en/support.html
   
   Commercial subscriptions for nginx are available on:
   * http://nginx.com/products/
   
   ----------------------------------------------------------------------
     Verifying  : 1:nginx-1.16.1-1.el7.ngx.x86_64                                                      1/1
   
   Installed:
     nginx.x86_64 1:1.16.1-1.el7.ngx
   
   Complete!
   
   

3. 啟動 nginx 服務

   $ sudo systemctl start nginx
   

4. 啟用 httpd 服務，讓 httpd 服務每次開機就會自動被帶起來

   $ sudo systemctl enable nginx
   Created symlink from /etc/systemd/system/multi-user.target.wants/nginx.service to /usr/lib/systemd/system/nginx.service.
   

5. 檢視 httpd 服務啟動狀態

   $ sudo 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 Thu 2019-09-12 11:27:03 CST; 2min 21s ago
        Docs: http://nginx.org/en/docs/
    Main PID: 5568 (nginx)
      CGroup: /system.slice/nginx.service
              ├─5568 nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.conf
              └─5569 nginx: worker process
   
   Sep 12 11:27:03 centos7-cli.lab.example.com systemd[1]: Starting nginx - high performance web server...
   Sep 12 11:27:03 centos7-cli.lab.example.com systemd[1]: Started nginx - high performance web server.
   

6. 開通本機防火牆

   $ sudo firewall-cmd --permanent --add-service=http
   success
   $ sudo firewall-cmd --reload
   success
   

7. 在其他台電腦開啟網頁測試 OK。