wdcp采用RPM包安裝，安裝好以后啟動httpd報錯如下：

Stopping httpd:                                            [FAILED]

Starting httpd: httpd: Syntax error on line 55 of /www/wdlinux/httpd-2.2.22/conf/httpd.conf: Cannot load /www/wdlinux/httpd-2.2.22/modules/libphp5.so into server: libmhash.so.2: cannot open shared object file: No such file or directory

                                                      [FAILED]

報錯提示無法加載庫文件，首先查看/www/wdlinux/httpd-2.2.22/modules/目錄，libphp5.so文件存在，find搜索libmhash.so.2文件，庫文件不存在，應該是RPM包安裝php的時候，相應的依賴擴展沒有安裝，于是準備手動安裝mhash,結果yum報錯：

Could not retrieve mirrorlist http://apt.sw.be/redhat/el6/en/mirrors-rpmforge error was

14: PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"

 * base: ftp.cuhk.edu.hk

 * extras: ftp.cuhk.edu.hk

 * updates: ftp.cuhk.edu.hk

http://apt.sw.be/redhat/el6/en/x86_64/rpmforge/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"

Trying other mirror.

Error: Cannot retrieve repository metadata (repomd.xml) for repository: rpmforge. Please verify its path and try again

原來是yum源出現了問題，于是使用aliyun的yum源

#cd /etc/yum.repos.d/

#mv rpmforge.repo rpmforge.repo.bak

#vim aliyum.repo

 添加如下幾行，然后wq保存退出

[aliyun]

name=Centos epel

baseurl=http://mirrors.aliyun.com/epel/$releasever/$basearch/

gpgcheck=0

#yum install mhash mhash-devel -y

#/etc/init.d/httpd restart

此時重啟httpd又報錯：

Stopping httpd:                                            [FAILED]

Starting httpd: httpd: Syntax error on line 55 of /www/wdlinux/httpd-2.2.22/conf/httpd.conf: Cannot load /www/wdlinux/httpd-2.2.22/modules/libphp5.so into server: libmcrypt.so.4: cannot open shared object file: No such file or directory

                                                      [FAILED]

提示找不到libmcrypt.so.4庫文件，應該是wdcp安裝的時候沒有安裝成功，手動安裝。

#yum install mcrypt -y

#service httpd restart

[root@amd5.cn ~]# service httpd restart

Stopping httpd:                                            [  OK  ]

Starting httpd:                                            [  OK  ]