由于CentOS6的系統安裝了epel-release-latest-7.noarch.rpm 導緻在使用yum指令時出現Error: xz compression not available問題。
解決方法:
1.到http://ftp.riken.jp/Linux/fedora/epel/下載下傳epel-release-latest-6.noarch.rpm
2.解除安裝epel-release-latest-7.noarch.rpm:yum remove epel-release
3.清空epel目錄:rm -rf /var/cache/yum/x86_64/6/epel/
4.安裝epel6:rpm -ivh epel-release-latest-6.noarch.rpm