August 2018

Date: Thursday, August 23, 2018 (09:00-10:30)

Who is affected:
All users of the CS department computing using soak.cs.princeton.edu

What is happening:
soak.cs.princeton.edu will be shutdown for replacement of a defective DIMM.

Why is it happening:
Hardware monitoring has indicated that a DIMM in this system is in a
pre-failure state and likely to fail soon. So as to avoid an unplanned
failure that may threaten the stability of the host, we are scheduling this
outage to replace the failing DIMM preemptively.

We will post updates to the status page: http://www.csstaff.org
as necessary.

If this downtime will cause you undue hardship, please contact
csstaff@cs.princeton.edu immediately, so we can discuss options to reduce
any negative impact. Your patience is appreciated.

Sincerely,
CS Staff
_______________________________________________
downtime mailing list
downtime@lists.cs.princeton.edu
https://lists.cs.princeton.edu/mailman/listinfo/downtime

Date: Wednesday, August 15, 2018 (06:00-10:00)

Who is affected:
All users of the CS Staff-managed public login systems, including the
cycles and courselab systems.

All users of the CS Department Beowulf high performance computing cluster,
known as ionic.

All users of departmental webservers, including user webspace
(www.cs.princeton.edu/~${user}), project webspace
(${projectname}.cs.princeton.edu), departmental web services
(www.cs.princeton.edu/courses/), and other internal applications
(iw.cs.princeton.edu et al).

What is happening:
During this window, these systems will have their OSes reinstalled and
upgraded to the latest distribution version.

SPECIAL NOTE: As we are reloading the Linux servers, all crontabs will be
deleted. If you have crontabs that you wish to persist, you will need to
back up your crontabs before the downtime, and restore them after.

Why is it happening:
This is part of regular maintenance to keep systems up-to-date.

We will post updates to the status page: http://www.csstaff.org
as necessary.

If this downtime will cause you undue hardship, please contact
csstaff@cs.princeton.edu immediately, so we can discuss options to reduce
any negative impact. Your patience is appreciated.

Sincerely,
CS Staff
_______________________________________________
downtime mailing list
downtime@lists.cs.princeton.edu
https://lists.cs.princeton.edu/mailman/listinfo/downtime