August 2017

Date: Thursday, August 31, 2017 (07:00-09:00)

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

What is happening:
During this window, these systems will have their OSes reinstalled and
upgraded to the latest distribution version, Springdale 7.4.

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

Date: Tuesday, August 8, 2017 (08:00-09:00)

Who is affected:
All users of CS Department administrative web properties (Dropbox, CS
Guide, the Main web site, etc.)

What is happening:
During this time, the database server underlying the administrative systems
will be upgraded and replaced. During the upgrade, all database-dependent
administrative systems will be unavailable. This includes the CS Dropbox
service, the main web site, CS Guide, ADM, and any content feeds provided
by CS Staff.

This outage is expected to last much less than a full hour, but an hour is
being scheduled in case of unexpected problems.

This outage does NOT affect project or personal databases or web servers,
the database server for which was upgraded on July 20.

Why is it happening:
As part of the routine maintenance of our systems, the old MySQL server
(running MySQL 5.1.73) will be replaced with a newer server running MariaDB
10.1.23.

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