建立使用環境

1. 遠端登入 kvm8.deyu.wang 虛擬機。
   

   [root@dyw219 ~]# ssh root@kvm8.deyu.wang
   root@kvm8.deyu.wang's password: 
   Last login: Sat Dec  6 09:45:29 2014 from 192.168.122.1
   [root@kvm8 ~]#
   

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@kvm8 ~]# yum install php -y
   Loaded plugins: fastestmirror, refresh-packagekit
   Determining fastest mirrors
   dywang                                                   | 1.9 kB     00:00     
   Setting up Install Process
   Resolving Dependencies
   --> Running transaction check
   
   Dependencies Resolved
   
   ================================================================================
    Package             Arch         Version                    Repository    Size
   ================================================================================
   Installing:
    php                 x86_64       5.4.30-1.el6.remi          dywang       2.7 M
   Installing for dependencies:
    apr                 x86_64       1.3.9-5.el6_2              dywang       123 k
    apr-util            x86_64       1.3.9-3.el6_0.1            dywang        87 k
    apr-util-ldap       x86_64       1.3.9-3.el6_0.1            dywang        15 k
    httpd               x86_64       2.2.15-26.el6              dywang       821 k
    httpd-tools         x86_64       2.2.15-26.el6              dywang        72 k
    mailcap             noarch       2.1.31-2.el6               dywang        27 k
    php-cli             x86_64       5.4.30-1.el6.remi          dywang       2.6 M
    php-common          x86_64       5.4.30-1.el6.remi          dywang       932 k
   
   Transaction Summary
   ================================================================================
   Install       9 Package(s)
   Upgrade       0 Package(s)
   
   ..........
   
   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@kvm8 ~]# vim /etc/httpd/conf/httpd.conf 
   [root@kvm8 ~]# grep kvm8 /etc/httpd/conf/httpd.conf 
   ServerName kvm8.deyu.wang:80
   

4. 啟動 httpd 服務。
   

   [root@kvm8 ~]# /etc/init.d/httpd start
   Starting httpd:                                            [  OK  ]
   

5. 設定開機啟動 httpd 服務。
   

   [root@kvm8 ~]# chkconfig httpd on
   

6. 檢查 httpd 開機啟動狀況。
   

   [root@kvm8 ~]# chkconfig --list httpd
   httpd          	0:off	1:off	2:on	3:on	4:on	5:on	6:off
   

7. 在此練習中，先不考慮防火牆設定，故先關閉防火牆。
   

   [root@kvm8 ~]# /etc/init.d/iptables stop
   iptables: Flushing firewall rules:                         [  OK  ]
   iptables: Setting chains to policy ACCEPT: filter          [  OK  ]
   iptables: Unloading modules:                               [  OK  ]
   [root@kvm8 ~]# chkconfig iptables off
   [root@kvm8 ~]# chkconfig --list iptables
   iptables       	0:off	1:off	2:off	3:off	4:off	5:off	6:off
   

8. 伺服器架設，不可能不使用防火牆。防火牆設定開啟 80 port。
   

   [root@kvm8 ~]# vim /etc/sysconfig/iptables
   [root@kvm8 ~]# cat /etc/sysconfig/iptables
   # Firewall configuration written by system-config-firewall
   # Manual customization of this file is not recommended.
   *filter
   :INPUT ACCEPT [0:0]
   :FORWARD ACCEPT [0:0]
   :OUTPUT ACCEPT [0:0]
   -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
   -A INPUT -p icmp -j ACCEPT
   -A INPUT -i lo -j ACCEPT
   -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
   -A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
   -A INPUT -j REJECT --reject-with icmp-host-prohibited
   -A FORWARD -j REJECT --reject-with icmp-host-prohibited
   COMMIT
   

9. 防火牆重新啟動，設定開機啟動。 注意：要確定防火牆編輯正確，否則重新啟動後，自己可能被擋在外面，無法連線。
   

   [root@kvm8 ~]# /etc/init.d/iptables restart
   iptables: Applying firewall rules:                         [  OK  ]
   [root@kvm8 ~]# chkconfig iptables on
   [root@kvm8 ~]# chkconfig --list iptables
   iptables       	0:off	1:off	2:on	3:on	4:on	5:on	6:off
   

10. 從 deyu.wang 主機必須可以連線 http://kvm8.deyu.wang。