建立使用環境

1. 遠端登入 kvm3.deyu.wang 虛擬機。

   [root@dyw219 ~]# ssh root@kvm3.deyu.wang
   root@kvm3.deyu.wang's password: 
   Last login: Sat Jan 25 17:37:42 2020 from 192.168.122.1
   [root@kvm3 ~]#
   

2. 使用 yum 安裝 php，會將其相依套件 httpd，也就是網頁伺服器也裝起來。

   [root@kvm3 ~]# yum install php
   Last metadata expiration check: 0:07:07 ago on Sat 25 Jan 2020 05:43:20 PM CST.
   Dependencies resolved.
   ================================================================================
    Package           Arch   Version                               Repository
                                                                              Size
   ================================================================================
   Installing:
    php               x86_64 7.2.11-1.module_el8.0.0+56+d1ca79aa   AppStream 1.5 M
   Installing dependencies:
    apr               x86_64 1.6.3-9.el8                           AppStream 125 k
    apr-util          x86_64 1.6.1-6.el8                           AppStream 105 k
    centos-logos-httpd
                      noarch 80.5-2.el8                            AppStream  24 k
    httpd             x86_64 2.4.37-11.module_el8.0.0+172+85fc1f40 AppStream 1.7 M
    httpd-filesystem  noarch 2.4.37-11.module_el8.0.0+172+85fc1f40 AppStream  34 k
    httpd-tools       x86_64 2.4.37-11.module_el8.0.0+172+85fc1f40 AppStream 102 k
    mod_http2         x86_64 1.11.3-2.module_el8.0.0+10+abf51267   AppStream 156 k
    nginx-filesystem  noarch 1:1.14.1-8.module_el8.0.0+5+258f653c  AppStream  24 k
    php-cli           x86_64 7.2.11-1.module_el8.0.0+56+d1ca79aa   AppStream 3.1 M
    php-common        x86_64 7.2.11-1.module_el8.0.0+56+d1ca79aa   AppStream 653 k
    mailcap           noarch 2.1.48-3.el8                          BaseOS     39 k
   Installing weak dependencies:
    apr-util-bdb      x86_64 1.6.1-6.el8                           AppStream  25 k
    apr-util-openssl  x86_64 1.6.1-6.el8                           AppStream  27 k
    php-fpm           x86_64 7.2.11-1.module_el8.0.0+56+d1ca79aa   AppStream 1.6 M
   
   Transaction Summary
   ================================================================================
   Install  15 Packages
   
   Total download size: 9.2 M
   Installed size: 32 M
   Is this ok [y/N]: y
   ..........
   Complete!
   

3. httpd 的設定檔 /etc/httpd/conf/httpd.conf，預設設定中只要加入你的網頁伺服器網域名稱就可以了。

   [root@kvm3 ~]# vim /etc/httpd/conf/httpd.conf 
   [root@kvm3 ~]# grep kvm3 /etc/httpd/conf/httpd.conf 
   ServerName kvm3.deyu.wang:80
   

4. 設定開機啟動 httpd 服務，並立即啟動。

   [root@kvm3 ~]# systemctl enable --now httpd.service 
   Created symlink /etc/systemd/system/multi-user.target.wants/httpd.service →
    /usr/lib/systemd/system/httpd.service.