yum:No package available

参考资料

需要先添加EPEL(Extra Packages for Enterprise Linux) repository，添加方法如下，请根据Centos的版本和CPU自行选择，如果不清楚如何查看，请参考《Linux查看系统信息常用指令》。

CentOS5.x 32-bit(x86/i386):

rpm -Uvh http://dl.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm

CentOS5.x 64-bit(x64):

rpm -Uvh http://dl.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm

CentOS6.x32-bit (x86/i386):

rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-5.noarch.rpm

CentOS6.x 64-bit(x64):

rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-5.noarch.rpm