All

Date: Tuesday, March 20, 2018 (07:00-09:00)

Who is affected:
All users of CS Department email services, including those forwarding their
CS email off-site or reading it locally.

What is happening:
During this window, our Zimbra mail server software will be updated to the
current release version. During the upgrade, all CS email services will be
unavailable.

Why is it happening:
This is a continuation of previously-announced work from January that could
not be completed at that time due to unforeseen obstacles. This upgrade is
part of normal maintenance of our systems, keeping up with changes and
updates to the software. It will also provide updated features and
interfaces for the Webmail interface.

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, January 30, 2018 (06:00-09:00)

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.

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

In addition, we will be patching against Spectre security bug. More
information available here:

https://access.redhat.com/security/vulnerabilities/speculativeexecution

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, January 30, 2018 (07:00-09:00)

Who is affected:
All users of CS Department email services, including those forwarding their
CS email off-site or reading it locally.

What is happening:
During this window, our Zimbra mail server software will be updated to the
current release version. During the upgrade, all CS email services will be
unavailable.

Why is it happening:
This upgrade is part of normal maintenance of our systems, keeping up with
changes and updates to the software. It will also provide updated features
and interfaces for the Webmail interface.

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: Saturday, January 13, 2018 (16:00-19:00)

Who is affected:
All users of the CS department computing.

What is happening:
Our storage operating system has a bug, which requires for CS storage to be
rebooted.

We expect that some of the SMB/CIFS clients will have to reconnect, but NFS
service will be continuous. The rest of CS services should not be
affected.

Why is it happening:
This is necessary in order to fix a bug on our file system.

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: 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