yum makecache 报错

jiawang

两台相同操作的系统在配置本地yum源的时候一台配置正常，一台异常，弄了半天也没找出原因，最后把原来默认的yum源配置文件直接rm解决。
[root@rac02 ~]#  cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.3 (Maipo)

在/etc/yum.repos.d/目录新建了一个mnt.repo的本地yum源，验证时报错：
[root@rac02 yum.repos.d]# ls
mnt.repo    public-yum-ol7.repo


[root@rac1 Desktop]# yum  makecache
Loaded plugins: langpacks, ulninfo
Repository ol7_latest is listed more than once in the configuration
http://yum.oracle.com/repo/OracleLinux/OL7/UEKR4/x86_64/repodata/repomd.xml: [Errno 14] curl#6 - "Could not resolve host: yum.oracle.com; Unknown error"
Trying other mirror.

One of the configured repositories failed (Latest Unbreakable Enterprise Kernel Release 4 for Oracle Linux 7Server (x86_64)),
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=ol7_UEKR4 ...
     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 ol7_UEKR4
        or
            subscription-manager repos --disable=ol7_UEKR4
     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=ol7_UEKR4.skip_if_unavailable=true
failure: repodata/repomd.xml from ol7_UEKR4: [Errno 256] No more mirrors to try.
http://yum.oracle.com/repo/Oracl ... epodata/repomd.xml: [Errno 14] curl#6 - "Could not resolve host: yum.oracle.com; Unknown error"


解决办法：

[root@rac02 yum.repos.d]# rm  public-yum-ol7.repo
[root@rac02 yum.repos.d]# ls
mnt.repo

[root@rac02 yum.repos.d]# yum makecache   （建立缓存）
已加载插件：langpacks, ulninfo
iso                                                                                                         | 3.6 kB  00:00:00     
mnt                                                                                                         | 3.6 kB  00:00:00     
元数据缓存已建立


[root@rac02 ~]# yum install -y  binutils compat*  elfutils-libelf elfutils-libelf-devel  glibc glibc-common  glibc-devel gcc gcc-c++ libaio libgcc  libstdc++ libstdc++-devel make sysstat unixODBC-devel libaio-devel已加载插件：langpacks, ulninfo
软件包 binutils-2.25.1-22.base.el7.x86_64 已安装并且是最新版本
软件包 compat-opensm-libs-3.3.15-2.el7.x86_64 已安装并且是最新版本
软件包 compat-db-headers-4.7.25-28.el7.noarch 已安装并且是最新版本
软件包 compat-libxcb-1.9-1.el7.x86_64 已安装并且是最新版本
软件包 compat-libgnome-desktop3-7-3.8.4-2.el7.x86_64 已安装并且是最新版本
软件包 compat-libpackagekit-glib2-16-0.8.9-1.el7.x86_64 已安装并且是最新版本
软件包 compat-gcc-44-c++-4.4.7-8.el7.x86_64 已安装并且是最新版本
软件包 compat-libcolord1-1.0.4-1.el7.x86_64 已安装并且是最新版本
软件包 compat-libcogl12-1.14.0-3.el7.x86_64 已安装并且是最新版本
软件包 compat-libtiff3-3.9.4-11.el7.x86_64 已安装并且是最新版本
软件包 1:compat-glibc-2.12-4.el7.x86_64 已安装并且是最新版本
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