nethserver 7.6 final
failure: repodata/repomd.xml from centos-sclo-rh: [Errno 256] No more mirrors to try. http://mirror.centos.org/centos/7/sclo/x86_64/rh/repodata/repomd.xml: [Errno 14] curl#6 - “Could not resolve host: mirror.centos.org; Unknown error”
The install/update may have failed due to metadata caching issues. Please clean the cache by clicking the button below and retry the install/update operation.