Getting ready for downtime and infrastructure update starting 8am Monday 14-Jun-2021

    - Updating the topology in OSG/git to prepare downtime (thanks to Brian, Ofer and Mark)

    - UM will (finish to) replace all the main switches, all cabling (all fiber where possible), and configuration.
      Some servers and worker nodes will  need to be relocated.

    - MSU will be moving all services and dcache storage to the MSU Data Center Monday-Tuesday (Wave 1)
      to coincide with UM downtime.
      Our public and private networks are now extended from our old EX9208 to our 2 new QFX5120 at the DC.
      2 nodes (Wave 0) were moved this Monday to iron out networking issues.
      Some multicast (for ganglia) and stability issues were discovered and fixed.
      The T2 WNs (and the MSU T3) will be moved over time (Wave 2, etc).
      Moving the last set of worker nodes will need to be synchronized with the move
      of the department servers sharing the same cooling (otherwise CRACs would fail on too-cold air return).

    - The UM-MSU link will unfortunately not be switched over to the new State Research Coridor Triangle at this time.
      The MSU multi 100G Research Network will also not be ready for cut-over until at least July.

    - Optimistically we may have dCache back on Wednesday