Author name: csstaff

Date: Monday, October 30, 2017 (07:00-09:00)

Who is affected:
All users of the CS Department network or network services (including such
things as e-mail, web servers, etc.)

What is happening:
During this window, the CS Department network border firewall will be
upgraded. During the upgrade, all network services entering or leaving the
department\’s internal network will be unavailable. This disruption will
affect normal internet service for systems on the CS network, as well as
connections to CS network services from outside the CS network.

Why is it happening:
This upgrade will bring our border firewall up-to-date with the latest
vendor-released features and bug fixes. It will correct a few open
vulnerabilities, as well as enable a smoother implementation of IPv6 in the
internal department network.

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: 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

Date: Tuesday, July 11, 2017 (09:00-12:00)

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

What is happening:
During this window, cluster management and job scheduling system slurm and
its database will be upgraded. No data loss is anticipated.

Why is it happening:
As part of the routine maintenance of our systems, the old slurm package
(running 15.08.8) will be replaced with a newest version – 17.02.4. 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, July 11, 2017 (09:00-10:00)

Who is affected:
All users of the CS Department \”publicdb\” database server, including any
dependent web properties.

What is happening:
During this window, the \”publicdb\” database server will be replaced with a
newer server. All existing MySQL databases will be migrated to the new
server, so no data loss is anticipated.

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. MariaDB is an open-source enhanced, drop-in replacement for MySQL.

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: Thursday, May 18, 2017 (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, March 22, 2017 (07:00-08:00)

Who is affected:
All users of CS Department public login (cycles/portal) and
courselab systems.

What is happening:
During this window, these machines will be rebooted in order to clear some
defunct user processes which are interfering with some research work.

Why is it happening:
As some user processes have entered a defunct state, and as those processes
are preventing research work, they require a system reboot to clear.

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, February 1, 2017 (07:00-08:00)

Who is affected:
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, OS patches will be applied to update our managed
systems to Springdale 7.3. After patching, all systems will be rebooted.

Note that though our user and project webservers will be rebooted, this
maintenance will not affect any user-owned files in either user or project
webspace directories.

Why is it happening:
This is part of regular maintenance to keep systems up-to-date. In
addition, this will bring the programming environment for userspace CGI in
line with the environment available on the cycles machines.

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, December 28, 2016 (05:00-09:00)

Who is affected:
All users of the CS Department public cycle servers (soak, wash, rinse, and
spin, aka \”cycles\”) and course lab servers (courselab01 and courselab02,
aka \”courselab\”); all users of the CS Department HPC Cluster
(ionic.cs.princeton.edu).

What is happening:
During this window, OS patches will be applied to update our managed
systems to Springdale 7.3. After patching, all systems will be rebooted.

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: Thursday, November 17, 2016 (07:30-08:00)

Who is affected:
All users of the CS Department network

What is happening:
The CS Department uplink to OIT\’s network will be temporarily unavailable.
The actual outage time should be only a few seconds, but we are allocating
a half hour for this task in case of trouble.

Why is it happening:
This work will upgrade the uplink between the CS Department and OIT,
providing more total bandwidth to the rest of campus and onward to the
internet.

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