Difference between revisions of "Notices"
 
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== {{red|JHU IT SERVICE OUTAGES AFFECTING CS IT SERVICES}} ==
 
 
=== PLANNED ''JHU'' SERVICE OUTAGES ===
 
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=== PLANNED CS IT SERVICE OUTAGES ===
 
=== PLANNED CS IT SERVICE OUTAGES ===
  
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===={{red|'''OUTAGE:  CS Linux Lab Systems Downtime/Upgrade Schedule'''}}====
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<!--:None at this time. -->
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'''WHEN:''' Monday, August 19 through Friday, August 23
 
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'''WHAT:''' Subsets of the CS Linux clients will be down for upgrades over the course of the week.
 
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'''DETAILS:''' In prepping for the new semester, we will be upgrading the CS Dept's [[:Category:Linux Clients|Linux clients]] (our lab systems and others that are remotely-accessible-only) from Fedora 38 to Fedora 40.  This will require having the clients offline during the upgrades. We'll do this in stages, so there will always be some clients available at all times.
 
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The upgrade schedule for these systems will be as follows:
 
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*        On Monday, August 19, ugrad1 through ugrad12 (in MH 122) will be upgraded.
 
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*        On Tuesday, August 20, ugrad13 through ugrad24 and masters1 through masters16 (in MH G61) will be upgraded.
 
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*        On Wednesday, August 21, ugradz and gradz (remotely-accessible only) will be upgraded.
 
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*        On Thursday, August 22, ugradx and gradx (remotely-accessible only) will be upgraded.
 
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*      On Friday. August 23, any systems that had to be skipped during the previous days will be upgraded. Our Notices page will have information about any such systems.
 
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<!--:None at this time.-->
 
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== {{red|CS COMPUTING LAB AVAILABILITY}} ==
 
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<!--  ***** NORMAL POSTING MH 122****** -->
 
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;:'''MH 122''' (CS Undergrad Lab/Collaboration room) is available for in-person access.
 
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:'''MH 122 ''UNAVAILABILITY'''''
 
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<!-- ****** NORMAL POSTING G61 ********** -->
 
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:'''MH G61''' (CS Masters/Ugrad Labs) is available for in-person access.
 
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<!--:* All CS Linux systems in this lab area (masters1 through masters16 and ugrad13 through ugrad24) are available for use in-person or remotely, via ssh.--> 
 
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=== '''''UPDATE''''' - July 19, 2021 -  The CS Computing Labs are once again available for '''''in-person access'''''...===
 
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:'''MH 122''' (CS Undergrad Lab/Collaboration room):  Is now '''''available for in-person access'''''.
 
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::All CS Linux systems in that room (ugrad1 through ugrad12) are available for use in-person or remotely, via ssh. {{red|Masks are required for entry.}}
 
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:'''MH G61''' (CS Masters/Ugrad Labs): Is now '''''available for in-person access'''''.
 
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::The Linux systems in this lab area (masters1 through masters16 and ugrad13 through ugrad24) are available for use in-person or remotely, via ssh. {{red|Masks are required for entry.}}
 
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Please see our [https://support.cs.jhu.edu/wiki/Category:Labs Labs] page for further information.
 
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<!--'''NOTE:''' Remember, all of the CS Linux systems, including the ones in the labs, will be unavailable during the March 22 power outage.  Please see above.-->
 
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<!--  *************** END ACTIVE NOTICES  ********************-->
 
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<!-- :None at this time. -->
 
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<!--PROGRAMMING CONTEST TEMPLATE -->
 
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<!--    === MH 122 ''and'' MH G61 (both CS Ugrad labs & the Masters Lab) CLOSURE ON Sat., Nov. 9===
 
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'''WHAT:'''  The 1st floor CS Ugrad lab, MH 122, and both lab sides of the CS Masters/Ugrad Lab, MH G61, will be closed due to an ACM Programming Contest.
 
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'''WHEN:'''  Saturday, November 9, from 9am - 7pm.
 
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'''ADDITIONAL INFO:'''  Although these labs will be closed for the ACM Programming Contest, you may still access our Ugrad Linux systems remotely, via ssh. Please see:
 
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:: [https://support.cs.jhu.edu/wiki/Linux_Clients_on_the_CS_Undergrad_Net https://support.cs.jhu.edu/wiki/Linux_Clients_on_the_CS_Undergrad_Net]
 
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::: or
 
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:: [https://support.cs.jhu.edu/wiki/Linux_Clients_on_the_CS_Grad/Research_Net https://support.cs.jhu.edu/wiki/Linux_Clients_on_the_CS_Grad/Research_Net]
 
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:for a list of our remotely available Linux systems.              -->
 
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*  ********************* BEGIN TEMPLATES ********************
 
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*
 
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<!--    ************ LAB CLOSURE TEMPLATE  - START ***************
 
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==== '''PLANNED CLOSURE''''' ====
 
  
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==== '''OUTAGE 1:''' Linux Lab Systems Not Accessible During Upgrades====
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:'''WHEN:''' Tuesday, August 19 through Friday, August 22
  
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'''''WHERE:'''''  Malone Hall G61, both the Masters and Ugrad sides of the lab.
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:'''WHAT: '''Subsets of the CS Linux clients will be down for upgrades over the course of the week.
  
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'''''WHEN:'''''  Monday, March 14 & Tuesday, March 15, from 6am to 12 Noon.
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:'''UPDATE:''' As of about 12:15 on Friday, all of our Linux clients have been upgraded.
  
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'''''WHY:'''''  Network cable installation.  The lab will be closed those two
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:'''DETAILS:''' We will be upgrading our Linux clients from Fedora 40 to Fedora 42. This will require having the clients offline during the upgrades. We'll do this in stages, so there will always be some clients available at all times.
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    mornings as workers install additional network cable.
 
  
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=====NOTES:=====
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:The lab machines whose numbers are integer multiples of five (ugrad5, ugrad10, ugrad15, ugrad20, masters5, masters10, and masters15) have already been upgraded (those are the staging systems we mentioned in a recent email to the CS faculty and students), so those will remain available throughout the week. The upgrade schedule for the remainder of the systems will be as follows:
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* During the lab closure times, the masters and ugrad Linux computers in G61 will continue to be available remotely, via SSH.
 
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* Ugrad Lab, MH 122 will not be affected and will remain open during those times.
 
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      *************    LAB CLOSURE TEMPLATE- END *************-->
 
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<!--      ********** BARLEY SHUTDOWN TEMPLATE - START *************
 
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===Planned Outage 1:  CS Ugrad Net File Server Repair (barley.cs.jhu.edu)===
 
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UPDATE:  10/4/16 7:15am  All systems back in operation!
 
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:'''WHAT:''' Major CS *Undergrad* Net IT services outage, as we make repairs to the CS Undergrad Net file server, '''barley.cs.jhu.edu'''
 
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:'''WHEN:''' Tuesday, October 4, from ''6am to approx 8am''.
 
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:'''DETAILS:''' Our CS Undergrad Net home directory file server, barley.cs.jhu.edu, will be shut down to swap out a motherboard, since its own motherboard is reporting errors.
 
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:Due to this shutdown for repair, several of our CS Ugrad Net services will be unavailable during this time.  If there are any unexpected complications during the repair process that will delay the restoration of services, we will update the CS IT Support Wiki's Notices page at [https://support.cs.jhu.edu/wiki/Notices https://support.cs.jhu.edu/wiki/Notices]
 
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{{red|UPDATE:  10/4/16 7:15am  All systems back in operation! }}
 
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====Suspended (Unavailable) Ugrad Net services while ''barley.cs.jhu.edu'' is  down====
 
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:::*'''CS Ugrad Mail service,''' both incoming and outgoing, will be suspended for CS Ugrad Net users (as this fileserver works in tandem with our CS Ugrad mail server.)  Incoming mail should be queued until our mail service is back up again. Outgoing mail from CS Ugrad Net users will not be available.
 
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:::*'''IMAP, POP, and Webmail''' from our CS Ugrad Mail server will be  unavailable.
 
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:::*'''Webpages''' served from our CS Ugrad webserver will be unavailable.
 
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:::*'''Ugrad Net user accounts/home directories''' will be inaccessible during the downtime.
 
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:::*'''ssh service to our CS Ugrad Net Linux boxes''' (ugrad1 through  ugrad24,and ugradx) will be unavailable.
 
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:::*'''Console (desktop) access to ugrad1 through ugrad24''' will be unavailable. However, although the CS Ugrad computers will be unavailable during the repair time, the CS Ugrad Labs will remain open.
 
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:::*'''MySQL service via the dbase.cs.jhu.edu server''' (used by a databases class) will be unavailable.
 
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:Future updates will be posted on the [https://support.cs.jhu.edu/wiki/Notices Notices] page of the CS IT Support Wiki
 
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{{red|UPDATE:  10/4/16 7:15am  All systems back in operation! }}
 
  
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* On Tuesday, August 19, ugrad1 through ugrad12 (located in MH-122) will be upgraded (...except for ugrad5 and ugrad10, which are already done.)
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* On Wednesday, August 20, ugrad13 through ugrad24 and masters1 through masters16 (located in MH-G61) will be upgraded (...except for ugrad15, ugrad20, masters5, masters10, and masters15, which are already done.)
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* On Thursday, August 21, ugradx and gradx (remotely-accessible only) will be upgraded.
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* On Friday, August 22, ugradz and gradz (remotely-accessible only) will be upgraded, along with any systems we were unable to upgrade earlier in the week.
  
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:Expect each system being upgraded to be unavailable between 9:00 am and 4:00 pm on the days for which it's scheduled. If a system remains unavailable after 4:00 pm on its scheduled day, this CS IT Support Wiki's Notices page will be updated with the appropriate information.
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===Planned Outage 2: Databases Class MySQL Database Server ('''dbase.cs.jhu.edu''') Unavailability===
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==== '''Outage 2:''' Networking Outage on the Malone Ground Floor ====
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:'''WHAT:''' The Databases class's MySQL database server, dbase.cs.jhu.edu, will be unavailable when the CS Ugrad Net's fileserver, barley.cs.jhu.edu, is being repaired (see above.)
 
  
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:'''WHEN:''' Tuesday, October 4, from ''6am to approx 8am''.
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:'''WHAT:''' WiFi and Ethernet connections will not be available on the ground floor of Malone Hall during an upcoming JHU-planned networking outage.
  
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:'''DETAILS:''' dbase.cs.jhu.edu uses the CS Ugrad Net file server and will therefore be unavailable during the barley.cs.jhu.edu repair time.
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:'''WHEN:''' JHU's Planned Network Outage – Wednesday, August 27, 2025, from 8pm through midnight.
  
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:Future updates will be posted on the [https://support.cs.jhu.edu/wiki/Notices Notices] page of the CS IT Support Wiki
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:'''DESCRIPTION:''' JHU is planning a network outage at Malone Hall to install new networking equipment.  The outage will start at 8:00 pm and is expected to last between two and four hours.  During the outage, the wireless access points on the ground floor will be offline, as will most of the Ethernet jacks. Please be prepared to not have any network connectivity on the Malone ground floor during this time.
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{{red|UPDATE: 10/4/16 7:15am  All systems back in operation! }}
 
  
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:Ethernet connections in the Malone server room, G29, will not be affected by this outage.  Any servers in G29 should remain accessible.  The Linux clients and Ethernet jacks in room G61, which contains the ground floor masters and undergrad labs, will not be affected either.  (But any laptops brought into G61 during the outage probably won't be able to access the wireless network.)
  
 
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              ********** BARLEY SHUTDOWN TEMPLATE - END *************  -->
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== {{red|CS COMPUTING LAB AVAILABILITY}} ==
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<!-- *******************  MINOR OUTAGE TEMPLATE BEGIN  ***********************
 
  
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'''Wed, July 30, 9am through noon:''' ''Entire Undergrad Net'' (clients and servers) will be down as we complete system maintenance and move some equipment to a different rack.
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<!-- ***** NORMAL POSTING MH 122****** -->
  
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Additionally, the Ugrad Net web and mail service will be unavailable during that time.  (Incoming ugrad net mail should queue up on another of our mail servers during that time, until the ugrad mail server is back up and running and transfers the mail.)
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:'''MH 122''' (CS Undergrad Lab/Collaboration room) is available for in-person access.
  
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    **************  MINOR OUTAGE TEMPLATE END  ********************* -->
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<!-- ****** NORMAL POSTING G61 ********** -->
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<!-- ************** MAJOR OUTAGE TEMPLATE BEGIN  *********************
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:'''MH G61''' (CS Masters/Ugrad Labs) is available for in-person access.
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'''MAJOR''' motherboard repair of ''rtfm.cs.jhu.edu'', one of our main CS ''Grad/Research'' Net file system servers, will create up to (but hopefully, much shorter than) 6-hour planned downtime for the Grad/Research Network.  Our hardware service/repair company will be on-site completing repairs.
 
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'''Outage will begin at 12am (midnight), Thursday, 8/22, and will last until 6am (or earlier) Thursday.'''
 
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During that time, the following services will be ''unavailable'':
 
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* ''Email in or out on the Grad/Research Net will be disabled.''  (Connections to smtp.cs.jhu.edu and imap.cs.jhu.edu will fail during that time.  However, incoming mail to CS should queue at an alternative server.)
 
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* ''Email on the Undergrad Net will be disabled during this time'' (as CS Ugrad e-mail addresses are registered via a server on the CS Grad Net.)  
 
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* ''DNS will only be available if you've configured your computer with a secondary DNS server.''  If you don't have a secondary server in your computer's DNS defined, please add 128.220.2.7  You may notice a delay in DNS name resolution when falling back to the secondary server.
 
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* ''Grad/Research Net user accounts/home directories will be inaccessible'' during the downtime.
 
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* ''Access to any of our Grad/Research Net linux clients (including gradx and masters1 through masters16, as well as Dr. Smith's pllab machines that we maintain) will be unavailable''
 
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* ''peregrine.cs.jhu.edu (our Solaris login server) will be unavailable''
 
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* ''Our mysql server, mysql.cs.jhu.edu, will be unavailable.''
 
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* ''Samba shares will be unavailable.''
 
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* ''Your Grad/Research Net web pages will be unavailable.''  (The webserver is expected to be serving minimal pages, mostly notices, during that time.)
 
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********************  MAJOR OUTAGE TEMPLATE END  *************************  -->
 
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<!--      *********  JHU-WIDE OUTAGES TEMPLATE - START *******************
 
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==JHU-WIDE IT SERVICE OUTAGES==
 
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<br>
 
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'''8/24/16 3:30pm'''  UPDATE:  We are told that JHU has fixed their mail servers and that JHU mail is back in operation again.
 
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'''8/24/16 1:30pm'''  JHU's central mail servers are experiencing an issue that is causing mail bouncebacks for people not on JHU Exchange sending to people on JHU Exchange.  An error might look like:
 
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:'''The reason for the problem: 5.1.2 - Bad destination host 'Multiple DNS'''
 
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:'''queries were attempted and failed: DNS Hard Error looking up'''
 
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:'''feint.johnshopkins.edu<http://feint.johnshopkins.edu/> (A): NXDomain'''
 
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JHU is looking into the problem at their end.    Note that although the CS email servers are working fine, those on CS sending to JHU Exchange users may experience the same issue as others outside of JHU Exchange sending to JHU Exchange.
 
  
 
<br>
 
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            *********** JHU-WIDE OUTAGES TEMPLATE - END***********    -->
 
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<!--  **************** MAIL BOUNCES TEMPLATE - START ****************
 
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===Possible Email Bounces From Normally-Working Sites===
 
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'''8/8/16'''  We have been receiving reports of ''email bounces from people/organizations that normally work without problems.''  We think we know what is happening.  We recently discovered that one of our CS student accounts had been compromised and was being used to send spam.  Even though we disabled the account as soon as the compromise was discovered, several mail server reputation services had already classified us as a possible source of spam.  As a result of that classification, some organizations have decided to temporarily reject email from our mail server.  We can't predict ahead of time which organizations those are, since there are a variety of reputation services, and individual organizations differ in the ways they make use of reputation information.
 
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This problem will fix itself automatically over the next few days, as the reputation services take note of the fact that we have stopped sending spam.  There's no way to speed up this process, unfortunately.
 
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This sort of problem doesn't often happen to us.  But when it does, it causes headaches like the unexpected bounce messages some people have received.  We will be implementing some new processes that we expect will allow us to react more quickly to situations like this, before they reach the point where other organizations stop accepting our mail.
 
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We will update this page once the reputation scores have returned to normal.
 
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<br>
 
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      **************** MAIL BOUNCES TEMPLATE - END -->
 
  
 
== {{red|AUDIO/VISUAL (A/V) OUTAGES}} ==
 
== {{red|AUDIO/VISUAL (A/V) OUTAGES}} ==

Latest revision as of 16:09, 22 August 2025


CS IT STAFF AVAILABILITY

  • The CS IT Support staff is back in Malone Hall. Our group is working a hybrid schedule with some of us working remotely on certain days, while others of our team are on campus.
  • We continue being available M-F, 8:30 to 5pm, but there may be certain times we might be online only.
  • Therefore, please remember to email support@cs.jhu.edu for assistance.
  • Also, please have Zoom available on your device(s), so that we can arrange to contact you using that method, as an alternative to in-person communication.
  • For the time being, Steve DeBlasio, our accounts liaison, is providing a virtual version of his daily office hours for accounts, etc. Email support@cs.jhu.edu for details.


CS IT SERVICE OUTAGES (Unplanned & Planned)

UNPLANNED CS IT SERVICE OUTAGES

None at this time.


PLANNED CS IT SERVICE OUTAGES

OUTAGE 1: Linux Lab Systems Not Accessible During Upgrades

WHEN: Tuesday, August 19 through Friday, August 22
WHAT: Subsets of the CS Linux clients will be down for upgrades over the course of the week.
UPDATE: As of about 12:15 on Friday, all of our Linux clients have been upgraded.
DETAILS: We will be upgrading our Linux clients from Fedora 40 to Fedora 42. This will require having the clients offline during the upgrades. We'll do this in stages, so there will always be some clients available at all times.
The lab machines whose numbers are integer multiples of five (ugrad5, ugrad10, ugrad15, ugrad20, masters5, masters10, and masters15) have already been upgraded (those are the staging systems we mentioned in a recent email to the CS faculty and students), so those will remain available throughout the week. The upgrade schedule for the remainder of the systems will be as follows:
  • On Tuesday, August 19, ugrad1 through ugrad12 (located in MH-122) will be upgraded (...except for ugrad5 and ugrad10, which are already done.)
  • On Wednesday, August 20, ugrad13 through ugrad24 and masters1 through masters16 (located in MH-G61) will be upgraded (...except for ugrad15, ugrad20, masters5, masters10, and masters15, which are already done.)
  • On Thursday, August 21, ugradx and gradx (remotely-accessible only) will be upgraded.
  • On Friday, August 22, ugradz and gradz (remotely-accessible only) will be upgraded, along with any systems we were unable to upgrade earlier in the week.
Expect each system being upgraded to be unavailable between 9:00 am and 4:00 pm on the days for which it's scheduled. If a system remains unavailable after 4:00 pm on its scheduled day, this CS IT Support Wiki's Notices page will be updated with the appropriate information.


Outage 2: Networking Outage on the Malone Ground Floor

WHAT: WiFi and Ethernet connections will not be available on the ground floor of Malone Hall during an upcoming JHU-planned networking outage.
WHEN: JHU's Planned Network Outage – Wednesday, August 27, 2025, from 8pm through midnight.
DESCRIPTION: JHU is planning a network outage at Malone Hall to install new networking equipment. The outage will start at 8:00 pm and is expected to last between two and four hours. During the outage, the wireless access points on the ground floor will be offline, as will most of the Ethernet jacks. Please be prepared to not have any network connectivity on the Malone ground floor during this time.
Ethernet connections in the Malone server room, G29, will not be affected by this outage. Any servers in G29 should remain accessible. The Linux clients and Ethernet jacks in room G61, which contains the ground floor masters and undergrad labs, will not be affected either. (But any laptops brought into G61 during the outage probably won't be able to access the wireless network.)


CS COMPUTING LAB AVAILABILITY

MH 122 (CS Undergrad Lab/Collaboration room) is available for in-person access.
MH G61 (CS Masters/Ugrad Labs) is available for in-person access.


AUDIO/VISUAL (A/V) OUTAGES

None at this time.