Centos 7.1 “Cannot find a valid baseurl for repo: base/7/x86_64”

Recientemente descargué la ISO de Centos 7.1, versión mínima, todo funciona correctamente pero cuando hago un ping a un host externo o digito yum update en la terminal obtengo lo siguiente:

[root@localhost ~]# yum update
Loaded plugins: fastestmirror


 One of the configured repositories failed (Unknown),
 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 

     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=.skip_if_unavailable=true

Cannot find a valid baseurl for repo: base/7/x86_64

Esto debido a que el servidor no tenia conectividad y necesita establecer la conectividad de manera inmediata, asumiendo que estamos en un entorno DHCP presente en la red de área local, ejecuté dhclient utilizando como argumento el nombre del dispositivo de red principal del sistema y se puede tener conectividad.

[root@localhost ~]# dhclient

dhclient eth0 intenta obtener una dirección IP para la interfaz eth0.



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