CentOS中查不到ip同时yum指令报错“fastestmirror Loading mirror speeds from cached hostfile Could not retrie”_已加载插件:fastestmirror loading mirror speeds from cac

1. 报错

已加载插件：fastestmirror Loading mirror speeds from cached hostfile 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. Run the command with the repository temporarily disabled yum --disablerepo=<repoid> ... 4. Disable the repository permanently, 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> or subscription-manager repos --disable=<repoid> 5. 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

2. 分析

【已加载插件：fastestmirror 从缓存的主机文件加载镜像速度 无法检索镜像列表 http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock】

在CSDN中尝试了许久，发现是网络的问题。

3. 解决

1.2.选择指定的虚拟机——>编辑——>虚拟网络编辑器（未截图）

3.4.

这一步完成后使用IP addr 指令就可以查出来ip地址。

5.

1）cd /etc/sysconfig/network-scripts 进入该文件夹后，然后再ls一下，查看是否有ifcfg-ens33，有时是ifcfg-eth0

2）vi ifcfg-ens33 进入VI的编辑模式，移动光标到ONBOOT=no

3）按下"i"进入VI的编辑模式，把no删除改为yes

4)修改后按下esc”后输入 “wq” （保存退出）

5)重启一下centos，再次试一下ip addr和 yum, 就可以了。