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部分客户通过 安装Kloxo面板和中文语言包，只要1行命令！的方法安装kloxo面板，出现打不开kloxo面板后台的情况， 即使重装操作系统，全新安装，还是会失败，kloxo面板后台还是打不开，怎么办？

现象：

IE可以打开ip，看到kloxo的提醒页面，表示kloxo其实安装成功了。访问 ip:7778 或 ip:7777 无法打开，显示找不到服务器或404错误

原因：

是yum库的ssl版本升级带来的kloxo问题。

解决办法，降级ssl然后重启kloxo，下面2行命令即可：

yum -y downgrade openssl mod_ssl httpd
service kloxo restart

yum -y downgrade无反应的解决办法：

yum不是最新版，不支持downgrade。怎么办？ 解决办法：执行 yum -y update 搞定

yum -y downgrade 成功标志：

Dependencies Resolved

====================================================================================================================================
Package Arch Version Repository Size
====================================================================================================================================
Installing:
httpd i386 2.2.3-31.el5.centos.2 updates 1.2 M
mod_ssl i386 1:2.2.3-31.el5.centos.2 updates 89 k
openssl i686 0.9.8e-12.el5_4.1 updates 1.4 M
Removing:
httpd i386 2.2.3-31.el5.centos.4 installed 3.1 M
mod_ssl i386 1:2.2.3-31.el5.centos.4 installed 173 k
openssl i686 0.9.8e-12.el5_4.6 installed 3.3 M

Transaction Summary
====================================================================================================================================
Install 3 Package(s)
Update 0 Package(s)
Remove 3 Package(s)

Total download size: 2.7 M
Is this ok [y/N]: y
Downloading Packages:
(1/3): mod_ssl-2.2.3-31.el5.centos.2.i386.rpm | 89 kB 00:00
(2/3): httpd-2.2.3-31.el5.centos.2.i386.rpm | 1.2 MB 00:01
(3/3): openssl-0.9.8e-12.el5_4.1.i686.rpm | 1.4 MB 00:00
————————————————————————————————————————————
Total 402 kB/s | 2.7 MB 00:06
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : openssl 1/6
Installing : httpd 2/6
Installing : mod_ssl 3/6
Cleanup : mod_ssl 4/6
Cleanup : openssl 5/6
Cleanup : httpd 6/6

Removed:
httpd.i386 0:2.2.3-31.el5.centos.4 mod_ssl.i386 1:2.2.3-31.el5.centos.4 openssl.i686 0:0.9.8e-12.el5_4.6

Installed:
httpd.i386 0:2.2.3-31.el5.centos.2 mod_ssl.i386 1:2.2.3-31.el5.centos.2 openssl.i686 0:0.9.8e-12.el5_4.1

Complete!