Author name: csstaff

Date: Tuesday, November 11, 2014 (05:00-05:30)

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

What is happening:
wash.cs.princeton.edu will be rebooted.

Why is it happening:
wash.cs.princeton.edu is running out of resources and has numerous defunct
processes.

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 28, 2014 (06:00-08:00)

Who is affected:
All users of the CS Department wired network

What is happening:
During this window, our core router will undergo a chassis swap. This will
disrupt all CS Department wired networking in the CS building, CITP, 221
Nassau St, and at the HPCRC. Wireless networking should be unaffected.

Why is it happening:
The core router has a backplane hardware problem which is causing some of
its ports to work improperly. After extensive troubleshooting to try to
solve the problem without disruption, it has become clear that a chassis
swap is in order.

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 14, 2014 (06:00-07:00)

Who is affected:
All users of the CS Department wired network.

What is happening:
Our core router and a few other switches will be rebooted in order to
refresh their firmware versions. During this time, all wired networking
will experience disruptions.

Wireless networking in the building should be unaffected.

Why is it happening:
This firmware update is part of the routine maintenance of the network, but
is also intended to address a few minor issues we presently face.

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 14, 2014 (07:00-08:00)

Who is affected:
All users of the CS Department public login hosts (cycles.cs.princeton.edu
and penguins.cs.princeton.edu).

What is happening:
These systems will be patched and rebooted.

Why is it happening:
During the recent reinstall of the cycles and penguins machines, problems
with the update repositories resulted in several updates not being applied.

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, July 31, 2014 (06:00-08:00)

Who is affected:
All users of CS Department public login hosts (cycles.cs.princeton.edu and
penguins.cs.princeton.edu).

What is happening:
During this window, the cycles and penguins machines will be reinstalled
and patched. At the same time, the cycles machines will be upgraded with
new hardware.

SPECIAL NOTE: As we are reloading the public login servers, all crontabs
will be deleted. You will need to back up your crontabs before the
downtime, and put them back after.

Why is it happening:
This is part of our routine annual maintenance of the public login systems.

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 29, 2014 (06:00-07:00)

Who is affected:
All users of the CS Department network and services, including e-mail, web
servers, and public login hosts.

What is happening:
During this window, OIT will be replacing hardware in a piece of equipment
which carries our fiber connection between the CS Department and the
Forrestal Data Center. As a result, all communication with the Data Center
will be interrupted. This will interrupt access to all CS Department
network services and hosts.

Why is it happening:
The equipment in question enables us to share long distance fiber with OIT
and other groups, and involves active electronics. The fans are failing in
this equipment and must be replaced.

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, July 24, 2014 (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: Thursday, July 17, 2014 (09:00-12:00)

Who is affected:
Potentially, all users of CS Department infrastructure systems, to include
e-mail, web service, and penguins login machines.

What is happening:
During this window, the storage underlying the department\’s VMware
infrastructure will undergo minor repairs.

NO OUTAGE IS EXPECTED during this time, but this message is being sent in
the interest of disclosure in the unlikely event something goes wrong which
causes an outage.

Why is it happening:
One of the storage nodes underlying the department\’s VMware infrastructure
has a bad DIMM. So far, it is only generating correctable errors, but needs
to be replaced in order to avoid the potential for further problems.

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

If this maintenance 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, July 10, 2014 (05:00-08:00)

Who is affected:
All users of the CS department computing

What is happening:
We will be troubleshooting our file system, which will require for CS
storage to be rebooted. All services that depend upon access to storage
will be unavailable, including – cycle servers, ionic cluster, web content,
home directories, CIFS, etc.

Why is it happening:
This is necessary in order to fix a bug on our file system, which can cause
major NFS failures.

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, July 3, 2014 (06:00-08:00)

Who is affected:
All users of the CS department computing

What is happening:
We will be patching our file system, which will require for CS storage to
be rebooted. All services that depend upon access to storage will be
unavailable, including – cycle servers, ionic cluster, web content, home
directories, CIFS, etc.

Why is it happening:
This is necessary in order to fix a bug on our file system, which can cause
major NFS failures.

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