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解決yum安裝失敗的一些經驗

yum安裝遇到的一些問題,今天mark一下

1.problem:

yum -y install docker-io
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
 * base: mirrors.cn99.com
 * extras: mirrors.cn99.com
 * updates: mirrors.cn99.com
http://download.fedoraproject.org/pub/epel/6/i386/repodata/repomd.xml: [Errno 14] problem making ssl connection
Trying other mirror.


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

問題一開始其實沒找準,問題在於紅字部分,明顯在提醒我  ssl 連結失敗, 百度一下是證書過期,

solve:1.將  /etc/yum.repos.d/epel.repo 的enable改為0,

2.下載證書,yum install ca-certificates

3.安裝成功後將步驟1的enable 改回1