All

Date: Thursday, June 12, 2014 (08:00-13:00)

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

What is happening:
We are upgrading our storage firmware, 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 install a backup accelerator, which will
allow for us to have better support for critical applications and
workloads.

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

Update (10:17): A problem with the upgrade has resulted in an NFS outage. We apologize for the trouble and are working to restore service as quickly as possible.

Update (10:26): All service should now be restored.

Date: Thursday, June 5, 2014 (05:00-08:00)

Who is affected:
All users of the CS department computing

What is happening:
We are upgrading our file system, which requires for CS storage to be
shutdown. 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 install a backup accelerator, which will
allow for us to have a better support for critical applications and
workloads.

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

Who is affected:
All users of the CS department computing and network infrastructure

What is happening:
We are physically moving our gateway router and core switch between racks within the second floor construction area and transitioning to new fiber uplinks. During this time, both wired and wireless networking will be unavailable in the CS building. All CS-based services will be unavailable including cycle servers, ionic cluster, e-mail, web content, DNS, DHCP, CIFS, etc. CS portions of the wired network will be unavailable in Sherrerd Hall (CITP), 221 Nassau (PlanetLab), and the Friend Center (010 Suite).

Why is it happening:
This is part of the renovation work.

Who is affected:
Most users in the CS Building

What is happening:
We will be temporarily disconnecting and then reconnecting many wired network ports over a wide swath of the CS Building. This specifically includes offices that have had their connections recently moved from one box to another. It also includes the uplink to room 002.

Why is it happening:
This is part of the network relocation that is part of the ongoing CS Building renovations.

As part of the network relocation work, we will need to bring down the
wireless network in the CS Building. This work will take place
6:00am-9:00am tomorrow morning (1/31/2014).

Users may have received a phishing attempt to their CS e-mail account. The subject may be \”Account Login Alert!\” or \”Princeton Security\”.

Please be aware that there seems to be a coordinated spear-phishing campaign targeting the CS Department. Various e-mails are being delivered to accounts making assorted claims from improper password use to free money or local news and events.

Remember to always exercise caution with e-mail and web sites. These messages prey on your inattention in order to steal your credentials and use them for various nefarious purposes. DO NOT CLICK SUSPICIOUS LINKS, and DO NOT TYPE YOUR USERNAME OR PASSWORD on any site that you are not 100% sure belongs to the CS Department.

If you are not sure, please feel free to forward suspicious messages to CS Staff (including full headers if you can) and we can verify whether or not the message is valid.

If you may have compromised your account, contact CS Staff

If you need any additional assistance, please contact the CS Staff at any time.

Who is affected:
All users of the CS Department or campus network or computing infrastructure, including, but not limited to, e-mail, web service, and public login hosts.

What is happening:
During this window, OIT will be performing maintenance on the campus network, resulting in no network service outside the CS network. This outage will include internet service and wireless service all over campus.

Also during this time, the CS linux servers will be patched and rebooted. The penguins (tux, opus) and cycles (soak, wash, rinse, and spin) hosts will be reinstalled.

SPECIAL NOTE: As we are reinstalling the penguins and cycles 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 regular maintenance to keep systems up-to-date.

This is a reschedule of the secondary tasks of an outage originally scheduled for November 27, 2013, and cancelled due to unscheduled and unrelated problems.

Who is affected:
All users of CS Department wired networks, including network users in the CS Building, 221 Nassau St., Sherrerd Hall, Friend Center, and 151 Forrestal Road (the HPCRC).

This outage will also affect the OIT wireless network ONLY in the CS Building.

Actual outages are expected to be much shorter than the full window, but outages local to any particular location will occur at various times throughout the window for 5 to 10 minutes at a time.

What is happening:
During this time, several network switches will be updated to newer versions of their operating systems.

Why is it happening:
The switch software updates will address a few minor bugs which have come up lately, including performance-limiting bugs.

This is a reschedule of an outage originally scheduled for November 27, 2013, and cancelled due to unscheduled and unrelated problems.

Who is affected:
All users of CS Department wired networks, including network users in the CS Building, 221 Nassau St, Sherrerd Hall, Friend Center, and 151 Forrestal Road (the HPCRC).

This outage will also affect the OIT wireless network ONLY in the CS Building.

What is happening:
During this time, the Department\’s network uplink (to the main campus, and onward to the greater Internet) will be upgraded from its current 1Gbps link to a 10Gbps link.

Why is it happening:
The campus uplink upgrade will enable greater opportunities for collaboration by increasing the rate at which data can be moved across the network. This will enable high-speed data transfer between CS Department systems and systems in other departments on campus and, in some circumstances, other remote locations.

Both of the CS LDAP authentication servers went down this morning due to hardware failure. The LDAP servers provide authentication for e-mail, SSH access to public CS servers, and the CS file system. We are working to restore the servers. We currently don\’t have a time when the service will be restored. Updates will be posted to this site as we make progress repairing the servers.

8:30 AM Update – The servers are now booting again and we are working to restore the LDAP software and the LDAP database.

9:20 AM Update – The LDAP software is now working and we are working on restoring the LDAP database.

10:20 AM Update – The LDAP database has been restored from an older version dating back to September. We are trying to update to the latest backup from last night.

11:11 AM Update – We were unsuccessful in restoring to a later version of the LDAP database. If you created a CS account or changed your password after September 24, 2013, you will need to contact CS Staff to update your password.