Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast

简介:

1、事件描述:CentOS7下使用tree命令,发现该命令没有被安装,在安装的过程中发现yum报错

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[root@openstack-01 ~] # tree -d
bash : tree: 未找到命令...
[root@openstack-01 ~] # yum -y install tree
已加载插件:fastestmirror, langpacks
Repodata is over 2 weeks old. Install yum- cron ? Or run: yum makecache fast

2、处理过程

a、直接执行yum makecache fast

[root@openstack-01 ~]# yum makecache fast

已加载插件:fastestmirror, langpacks

Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast

备注:根据它的提示信息执行操作,发现提示信息依旧


b、清除yum缓存

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[root@openstack-01 ~] # yum clean all
已加载插件:fastestmirror, langpacks
Repodata is over 2 weeks old. Install yum- cron ? Or run: yum makecache fast
正在清理软件源: base centos-ceph-hammer centos-openstack-mitaka centos-qemu-ev extras updates
Cleaning up everything
Cleaning up list of fastest mirrors
[5]-  已杀死               yum update
[root@openstack-01 ~] # yum makecache
已加载插件:fastestmirror, langpacks
Could not retrieve mirrorlist http: //mirrorlist .centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was
14: curl #6 - "Could not resolve host: mirrorlist.centos.org; 未知的错误"
  One of the configured repositories failed (未知),
  and yum doesn't have enough cached data to  continue . At this point the only
  safe thing yum can  do  is fail. There are a few ways to work  "fix"  this:
      1. Contact the upstream  for  the repository and get them to fix the problem.
      2. Reconfigure the baseurl /etc for  the repository, to point to a working
         upstream. This is most often useful  if  you are using a newer
         distribution release than is supported by the repository (and the
         packages  for  the previous distribution release still work).
      3. Disable the repository, so yum won't use it by default. Yum will  then
         just ignore the repository  until  you permanently  enable  it again or use
         --enablerepo  for  temporary usage:
             yum-config-manager --disable <repoid>
      4. Configure the failing repository to be skipped,  if  it is unavailable.
         Note that yum will try to contact the repo. when it runs most commands,
         so will have to try and fail each  time  (and thus. yum will be be much
         slower). If it is a very temporary problem though, this is often a  nice
         compromise:
             yum-config-manager --save --setopt=<repoid>.skip_if_unavailable= true
Cannot  find  a valid baseurl  for  repo: base /7/x86_64

这时候我开始怀疑是不是我的yum所在的网络也存在问题


c、检测网络连通性状态,发现的确是网络存在问题

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检查了网卡配置,发现DNS配置存在一些问题,手动修改并重置网卡信息,网络恢复正常
[root@openstack-01 ~] # yum clean all
已加载插件:fastestmirror, langpacks
正在清理软件源: base centos-ceph-hammer centos-openstack-mitaka centos-qemu-ev extras updates
Cleaning up everything
[root@openstack-01 ~] # yum -y install tree
已加载插件:fastestmirror, langpacks
base                                                                                                                         | 3.6 kB  00:00:00     
centos-ceph-hammer                                                                                                           | 2.9 kB  00:00:00     
centos-openstack-mitaka                                                                                                      | 2.9 kB  00:00:00     
centos-qemu-ev                                                                                                               | 2.9 kB  00:00:00     
extras                                                                                                                       | 3.4 kB  00:00:00     
updates                                                                                                                      | 3.4 kB  00:00:00     
(1 /7 ): centos-ceph-hammer /7/x86_64/primary_db                                                                                 |  30 kB  00:00:01     
(2 /7 ): extras /7/x86_64/primary_db                                                                                             | 132 kB  00:00:00     
(3 /7 ): updates /7/x86_64/primary_db                                                                                            | 4.9 MB  00:00:01     
(4 /7 ): centos-openstack-mitaka /x86_64/primary_db                                                                              | 452 kB  00:00:04     
(5 /7 ): base /7/x86_64/primary_db                                                                                               | 5.3 MB  00:00:07     
(6 /7 ): base /7/x86_64/group_gz                                                                                                 | 155 kB  00:00:15     
(7 /7 ): centos-qemu-ev /7/x86_64/primary_db                                                                                     |  23 kB  00:00:16     
Determining fastest mirrors
  * base: mirrors.zju.edu.cn
  * extras: mirrors.aliyun.com
  * updates: mirrors.aliyun.com
正在解决依赖关系
--> 正在检查事务
---> 软件包 tree.x86_64.0.1.6.0-10.el7 将被 安装
--> 解决依赖关系完成
依赖关系解决
====================================================================================================================================================
  Package                         架构                              版本                                       源                               大小
====================================================================================================================================================
正在安装:
  tree                            x86_64                            1.6.0-10.el7                               base                             46 k
事务概要
====================================================================================================================================================
安装  1 软件包
总下载量:46 k
安装大小:87 k
Downloading packages:
tree-1.6.0-10.el7.x86_64.rpm                                                                                                 |  46 kB  00:00:00     
Running transaction check
Running transaction  test
Transaction  test  succeeded
Running transaction
   正在安装    : tree-1.6.0-10.el7.x86_64                                                                                                        1 /1 
   验证中      : tree-1.6.0-10.el7.x86_64                                                                                                        1 /1 
已安装:
   tree.x86_64 0:1.6.0-10.el7                                                                                                                        
完毕!
[root@openstack-01 ~] # tree
.
├── anaconda-ks.cfg
├── keystonerc_admin
├── keystonerc_demo
├── packstack-answers-20160505-132946.txt
├── packstack-answers-20160505-134047.txt
├── packstack-answers-20160505-152256.txt
├── \345\205\254\345\205\261
├── \346\250\241\346\235\277
├── \350\247\206\351\242\221
├── \345\233\276\347\211\207
├── \346\226\207\346\241\243
├── \344\270\213\350\275\275
├── \351\237\263\344\271\220
└── \346\241\214\351\235\242
     ├── \346\234\252\345\221\275\345\220\215\346\226\207\344\273\266\345\244\271
     └── \346\234\252\345\221\275\345\220\215\346\226\207\344\273\266\345\244\271\ 2
10 directories, 6 files

3、小结

在分析报错信息的时候,不能片面的根据提示信息去做,要抓住核心,才能速度解决问题。










本文转自 冰冻vs西瓜 51CTO博客,原文链接:http://blog.51cto.com/molewan/1785975,如需转载请自行联系原作者
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