Author name: csstaff

Date: Tuesday, October 30, 2018 (07:30-10:30)

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.

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

Why is it happening:
Lingering kernel patches, which couldn\’t be applied during our last cycle
due to unexpected compatibility errors, will be installed.

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 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

Date: Tuesday, July 24, 2018 (05:00-08:00)

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

What is happening:
We are upgrading our storage operating system, 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 numerous bugs 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: Tuesday, July 3, 2018 (07:00-08:00)

Who is affected:
All users of CS Department networks or services, including wired network
service in the CS Building, 221 Nassau Street, 194 Nassau Street, Corwin
Hall, and the CITP area of Sherrerd Hall. Network services such as email
and web service will also be affected.

What is happening:
During this window, the core router supporting the CS Department network
will undergo a hardware upgrade. This will result in a near-total network
outage which will last several minutes, but not the entirety of the
scheduled time.

Why is it happening:
This hardware upgrade will prepare the CS network for future connectivity
and feature improvements, including higher capacity links for increased
bandwidth to the broader 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

Date: Monday, June 11, 2018 (14:00-15:00)

Who is affected:
Users of the CS Department CIFS/SMB file server service.

What is happening:
One node of our file server cluster will be rebooted, so some CIFS/SMB file
shares may be unavailable during the reboot. Most clients should be
unaffected.

If you find your CIFS/SMB connection is hung or disconnected, wait a few
minutes and then attempt to reconnect.

Why is it happening:
A firmware bug in the file server has caused a destabilizing failure in one
of the nodes. As a result, that node needs to be rebooted. During the
reboot, some CIFS/SMB service will be disrupted, but all other functions of
the file server should failover to other nodes and continue uninterrupted.

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, 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