说明：今天在火车上测试一个CentOS7下的一个服务，要用到yum配置，但是本机没有联网，所以考虑到配置本地yum，按照之前CentOS6下的常规方法，居然发现有报错。
操作如下：
1）虚拟机下将CentOS7光盘加载到系统里面，然后挂载到本地的/localyum上
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[root@localhost yum.repos.d]
# mkdir -p /localyum
[root@localhost yum.repos.d]
# mount /dev/cdrom /localyum
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2）添加一个repo文件
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[root@localhost ~]
# cd /etc/yum.repos.d/
[root@localhost yum.repos.d]
# vim CentOS7-local.repo
[localyum]
name=localyum
baseurl=
file
:
///localyum/
gpgcheck=0
enabled=1
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3）测试安装下vsftpd软件
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[root@localhost yum.repos.d]
# yum -y install vsftpd
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
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4）由于是在局域网内，无法正常连上外网，所有重新调整了下repo文件
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[root@localhost yum.repos.d]
# vim CentOS7-local.repo
[localyum]
name=localyum
baseurl=
file
:
///localyum/
gpgcheck=0
enabled=1
[root@localhost yum.repos.d]
# yum --disablerepo=\* --enablerepo=localyum clean all#清除缓存
[root@localhost yum.repos.d]
# yum --disablerepo=\* --enablerepo=localyum makecache#缓存本地yum源包信息
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5）重新安装下vsftpd软件
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[root@localhost yum.repos.d]
# yum -y install vsftpd
已加载插件：fastestmirror, langpacks
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
localyum | 3.6 kB 00:00:00
updates | 3.4 kB 00:00:00
(1
/6
): localyum
/group_gz
| 154 kB 00:00:00
(2
/6
): localyum
/primary_db
| 2.7 MB 00:00:00
(3
/6
): extras
/7/x86_64/primary_db
| 149 kB 00:00:00
(4
/6
): updates
/7/x86_64/primary_db
| 5.7 MB 00:00:18
(5
/6
): base
/7/x86_64/group_gz
| 155 kB 00:00:21
(6
/6
): base
/7/x86_64/primary_db
| 5.3 MB 00:00:29
Determining fastest mirrors
* base: mirrors.163.com
* extras: mirrors.cqu.edu.cn
* updates: mirrors.cqu.edu.cn
正在解决依赖关系
--> 正在检查事务
---> 软件包 vsftpd.x86_64.0.3.0.2-11.el7_2 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:
vsftpd x86_64 3.0.2-11.el7_2 updates 167 k
事务概要
====================================================================================================================================================
安装 1 软件包
总下载量：167 k
安装大小：347 k
Downloading packages:
vsftpd-3.0.2-11.el7_2.x86_64.rpm | 167 kB 00:00:00
Running transaction check
Running transaction
test
Transaction
test
succeeded
Running transaction
正在安装 : vsftpd-3.0.2-11.el7_2.x86_64 1
/1
验证中 : vsftpd-3.0.2-11.el7_2.x86_64 1
/1
已安装:
vsftpd.x86_64 0:3.0.2-11.el7_2
完毕！
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6）配置光盘开机自动挂载
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[root@localhost ~]
# echo "/dev/cdrom /localyum iso9660 defaults 0 0">>/etc/fstab
[root@localhost ~]
# mount -a
再次运行，yum -y
install
vsftpd,就没有类似的报错了
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本文转自 冰冻vs西瓜 51CTO博客，原文链接：http://blog.51cto.com/molewan/1892406，如需转载请自行联系原作者
