Hello, The Scientific Linux distribution servers may be unavailable from Today July 20 2018 15:00 CDT (Chicago) until July 22 2018 16:00 CDT(Chicago). Downloads, yum operations, and mirror syncs may fail against the following hosts: * rsync.scientificlinux.org * ftp.scientificlinux.org * ftp1.scientificlinux.org * ftp2.scientificlinux.org Additionally www.scientificlinux.org is expected to be unavailable during this entire interval. For your local time you can run: date -d '2018-07-20 15:00 CDT' date -d '2018-07-22 16:00 CDT' Thank you for your patience while we perform this maintenance. SL Team -- Pat Riehecky Fermi National Accelerator Laboratory www.fnal.gov www.scientificlinux.org