EDIT 17:00: general boot OK. Some nodes and queues still down.
EDIT 16:00: Startup is ongoing. File-servers (home, Xnfs), scratch-servers and front nodes (“comp” machines) are still checked.
EDIT 12:00: Expected startup from 2:00 PM to 4:00 PM today, at best. Heavy checks needed, so be patient.
ssh.psmn is still under attack from a botnet, that's why “maximum authentication attempts exceeded”.