EECS Instructional Support Group, Department of Electrical Engineering & Computer Science
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NOTICES for EECS Instructional Users

Sep 12 - UNIX systems froze, 10am-10:20am
	The Instructional UNIX systems lost both LDAP and NFS services 
	(passwords and home directories) from about 10am-10:20am today.  

	The effect on our users was frozen login sessions or the inability 
	to login.

	This was caused by a loss of connection to one of our LDAP servers 
	and the time delay for the NFS server to automatically cutover to 
	our redundant LDAP server.

July 29 - intermittent network problems
	(July 29) There was a network problem from about 9:50am to 10:55am
	today that prevented our users from accessing their UNIX homedirs and 
	Airbears.   For more information:

	(July 14) EECS network staff are performing load testing today to help 
	prevent additional incidents as below.   There will be intermittent 
	moments of poor network performance at the EECS border as this occurs.
	For more information:

	(July 9)  The EECS Instructional systems experienced intermittent lost 
	connections (for periods of a minute or so every few hours) to the UNIX 
	home directories between July 3 and July 8.  The symptom was that it
	would be slow to login while waiting for initial access to the home 
	directories, then you might get 'command not found' errors if the "dot"
	files in your home directory had failed to run and set your path.  The 
	server support staff corrected this at about 3pm on July 8.  For more 

	(June 25) EECS computers experienced intermittent network interruptions 
	of up to several minutes between June 23 and June 25.   There were 
	dropped connections between the EECS network and the outside world 
	(including the rest of campus and users on Airbears who are connected 
	to EECS computers). This affected communication in both directions.
	The EECS network group posts updates at

Apr 28 - Windows users: Internet Explorer security hole
	A major security risk has been identified in Microsoft Internet 
	Explorer.   Please use Firefox or another broswer until a patch
	has been released.   More information:

Apr 14 - 199 Cory: renovated SanDisk lab opens April 15!
	On Tuesday April 15, 199 Cory will reopen as the newly renovated
	SanDisk Computing Lab.   

	All students in EECS classes are welcome to use this comfortable and
	collaborative space, which includes 8 new PCs (Windows, 16GB RAM),
	seating for groups and laptop users and a large LCD display that you
	can use with your own portable device.

	Please also join us for the Opening Ceremony with SanDisk on Friday 
	April 18 at 11am.

Mar 29 - network access has been restored, 9pm March 29

	The EECS networks were restored to service at about 8:45pm.
	WEB pages on http://inst.eecs were accessible again at 9pm. was rebooted at 12:30am (Sunday) to reset NFS.

	The original announcement (March 27):

	All EECS computers will be inaccessible on 
	Saturday March 29 from about 10AM - 6PM
	during scheduled maintenance to the EECS networks.

	The EECS network will be down for maintenance on Saturday, so our
	computers will be inaccessible from the network and from each another.
	Any users on our systems would experience interruptions and possible
	loss of data.

	This includes our email server (imail.eecs) and WEB server (inst.eecs).
	Email that is sent to our server during that time will be queued by the 
	sender for later delivery.

	For more information about the EECS network maintenance, please see

	Here's the sign for the labs.

Jan 9 - all computers will be down, Jan 10-12
	All EECS instructional computers will be offline from 

	Friday Jan 10 at about 5pm 
	Monday Jan 13 at about 10am

	Our email server (imail.eecs) and WEB server (inst.eecs) will be
	down only on Saturday Jan 11 from 10am-6pm.  Email that is sent
	to the server during that time will be queued by the sender for
	later delivery.

	The EECS network will be down for maintenance on Saturday, so our
	computers will be inaccessible from the network and from each another.
	Any users on our systems would experience interruptions and possible
	loss of data.

	For more information about the EECS network maintenance, please see

Dec 19 - unable to login to some UNIX systems
	Starting the morning of Dec 19, some of our UNIX systems have denied 
	logins or been missing the home directories.  This is caused by a
	failure in LDAP authentication caused by some new certificates.  
	This was fixed by 1pm today; please notify ""
	(510-643-6141) if you are still unable to login to our systems.

	You can list our login servers at

Dec 5 - delays with logins, browswers, logouts
	Starting the morning of Dec 5, logins at some workstations on 200 SDH 
	(Macs) and 2xx Soda (Linux) experienced delays and timeouts.  It is 
	most noticable with Firefox and Chrome WEB browsers.  If the WEB site
	you want times out, you can usually get it after clicking "Reload" a
	few times.  The browsers may refuse to close when you try to logout.
	The sypmtoms are more severe on the Macs than on the Linux systems.

	We are trying to diagnose this will get help from the dept network
	staff on Friday.   We'll post updates here.

Dec 3 - network problem is causing general slowness
	The EECS network has been restored to service.
	Thanks to the EECS network staff for discovering the cause.
	The network problem occurred from 1:30am - 3:30pm today.  It caused
	delays and timeouts for logins and for access to WEB servers and 
	email servers on EECS computers.  AirBears was down.  
	For updates from the EECS network staff, please see

Nov 13 - phishing spam from "EECS at UC Berkeley" - don't answer!
	If you have received this email, please DELETE it without clicking on 
	the link:

	From: UC Berkeley EECS
	Subject: validate and upgrade to our new Mail hub system.

	This Email Is from the UC Berkeley EECS  Support. We Will Be Making 
	Some Vital E-Mail Account Maintenance Today 12th of November 2013.  
	To avoid your e-mail account been terminated during this upgrade, 
	Kindly Click Here and follow the instructions to validate and upgrade 
	to our new Mail hub system.

	This is a phishing scam and is NOT from EECS administrators.  You may 
	have found that obvious because of the addresses in the full email

	From  Wed Nov 13 16:59:23 2013
	To: Recipients <>
	From: UC Berkeley EECS  <>

Nov 4 - some printers were down over the weekend
	Printers that are spooled via the "iprint.eecs" server were down
	from about 8am Saturday (Nov 2) through 10:30am Monday (Nov 4).

	This includes the printers:

	lw199@iprint (lw199a@iprint, lw199b@iprint) in 199 Cory
	lw119@iprint in 119 Cory
	lwh30@iprint in 200 Sutadja Dai 
	lw274@iprint (print274a@iprint, print274b@iprint) in 274 Soda
	lw330@iprint in 330 Soda
	lw349@iprint in 349 Soda

	All print jobs that were queued during that time have been canceled,
	and will not count against the user's print quota.

Oct 9 - new Synopsys licenses: Svisual replaces Tecplot
	We are transitioning to new Synopsys licenses during October.  The 
	TecPlot program is replaced by the Sentaraus Visual (Svisual), and 
	some functions of the INSPECT scripting language will no longer work.  
	For details please see

	To give GSIs, researchers and students time to test the new Svisual
	features, we'll run the new licenses from about noon-6pm each weekday 
	until Oct 25, 2013.  After that, Tecplot will become obsolete.

	Please report questions or problems to

Oct 4 - The imail.eecs mail server was not accepting incoming mail from about 8pm Thurday - 10am Friday.
	The Instructional email server refused incoming mail from 8pm on 
	Thursday until 10am on Friday.  All backlogged mail seems to be
	delivered now (10:30am Friday).

	Email that is refused is cached on the senders' computers and
	retried periodically until it gets through, so emails  were 
	delayed but not lost.

Oct 1 - EECS Instructional services have been restored after the power outage
	There was a campus power failure yesterday.

	EECS Instructional services were restored by noon today (Oct 1).
	Please report any problems to

Sep 12 - major power failure & computer outage, 8am-2pm
	At about 8:15am, a transformer near Evans Hall broke and caused a
	power outage in Cory, Soda, Etcheverry, Sudarja Dai and other 
	buildings.   Soda Hall was closed until about noon.  The computers,
	servers and networks for the instructional labs were restored to
	service by 2pm.

	There is a notice about the power failure on the campus IST Service
	Status page at

	This power outage was a result of an explosion in a manhole outside 
	of Evans hall which damaged several high-power electrical cables.
	Campus reported that up to 15 buildings lost power completely and up 
	to 30 more lost partial power.

May 2 - Spring 2013 computer accounts and e-Academy accounts expire May 20
	Please see

Apr 23 - National Instruments Campus Tour, LabView experts: Soda Hall, April 23
	The National Instruments bus came to campus for the day and was
	visited by about 75 faculty, students and staff.

Apr 16 - Yahoo! donated 24 servers to instructional computing
	Yahoo donated 24 servers to instructional computing 
	and bought pizza lunches for EECS students!

What if you are threatened in a lab?
	Please see
	for information about seeking help while you are in one of our labs.  

Can't Login?

Symptoms when UNIX home directories are missing:
	- when you try to login the screen freezes 
	- you see the error message "home directory is /" 
	- session hangs up if you try to 'ssh' into an Instructional computer
	- unable to read WEB pages from the 
	- lots of annoying "NFS timeout" error messages on your screen

	While the server is down, you may not be able to logout in our labs
	because you can't type any commands.  On a SunRay, even turning it
	off doesn't log you out.  The support staff check the labs after 
	events like this to be sure everyone gets logged out.  We also post 
	information about the problem at to 
	help students find out when the problem has been fixed.   So all you 
	can really do in this case is to wait until the problem is fixed, go 
	back to the lab (or login to the SunRay server for that lab) and log 
	yourself out, or let us log you out.

	We disable email receipt and relaying through imail.eecs when the 
	home directory server is down.  No mail is lost.  Computers that 
	send mail queue messages that are not accepted by a remote server, 
	and they resend the messages periodically until they are received.

Last modified: Friday, September 12, 2014