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AirBears Downtime

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To: ucb-net-announce@lists.berkeley.edu
Organization: IST-Infrastructure Services

SCHED OUTAGE Entire AirBears Wireless Network: Thursday, 30 October 2008: 05:30 – 07:00PDT

Equipment: Wireless Access Managers and Control Servers
Location: Entire AirBears Wireless Network
Date: Thursday, 30 October 2008: Start: 05:30 End: 07:00PDT

Description: This Thursday, IST will be upgrading the Operating System on both Wireless Control Servers and on many of the Wireless Access Managers throughout campus.

This outage will affect ALL AirBears locations throughout campus and surrounding areas. During the upgrade process, affected networks will be unavailable, and currently attached clients will be required to reauthenticate.

Please note that the maintenance window for this outage is one and one half (1.5) hours. The affected subnets should be back on-line within forty minutes of the initial outage, but a larger window has been allocated to allow for unforseen challenges.

Resolved as of 2008-11-02 00:22:00

Brief Interruption of Some IRIS Services

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The department website, Jabber and Sympa services were briefly interrupted this morning due to an issue with the cluster that provides them.

Each service was unavailable for a few minutes between 10:00 a.m. and 10:30 a.m. as the server cluster they run on was restarted. Restarting the cluster was necessary to alleviate a deadlock in the clustered file system used by the services.

My apologies for any inconvenience this has caused, I’m looking into how to avoid this situation in the future and bring more stability to the cluster.

Resolved as of 2008-10-28 10:30:00

Brief network outage in Cory and BWRC, Oct 28, 6:30am

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The main Cory router will be down for maintenance on Tuesday October 28, 2008 from 6:30AM to 7AM. This will shutdown all connectivity in Cory Hall and internet access for BWRC. Actual downtime is expected to only be about 10 minutes, maybe less.

Bruce, EECS Networks
[Read more…] about Brief network outage in Cory and BWRC, Oct 28, 6:30am

Urgent Patch for Windows systems

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Microsoft has just released an emergency out-of-band update to address remote code exploits in Windows versions 2000/XP/2003/vista/2008.

Please update Windows systems as soon as possible as exploits are already in the wild. Due to the release of this update, you may experience slow responses from the Windows Update service.

While the EECS firewall blocks traffic on the affected ports, all affected systems – especially mobile systems that come and go from from the EECS network such as laptops – should apply this update as soon as possible.

More information can be found at the following URLs:

http://www.microsoft.com/technet/security/Bulletin/MS08-067.mspx

http://blogs.technet.com/msrc/archive/2008/10/23/ms08-067-released.aspx
http://isc.sans.org/diary.html?storyid=5227

Emergency Microsoft Patching – October 2008

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Microsoft has release an emergency patch for all versions of its OS. Hermes, winsww, ris and print will be patched and rebooted tonight at 6pm.

If you have not already done so please make sure you have installed KB958644 on all your Windows hosts.

This is the best description of the vulnerability I have found so far; http://www.intelliadmin.com/blog/2008/10/smb-vulnerablity-found-emergency-patch.html

I am in process of patching all other EECS Windows host.

Thanks.
[Read more…] about Emergency Microsoft Patching – October 2008

October 08 Server Patching

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Microsoft will release their patches for the month on Tuesday, October 14th, 2008.

PRINT, RIS and WINSWW will automatically patch and reboot Wednesday, October 15th, at 3:00 am.

HERMES and macserver.eecs will be down for patching and maintenance Wednesday, October 15th, from 6:00 a.m. – 7:00 a.m.
[Read more…] about October 08 Server Patching

Unexpected Outage of Dept. Website, FTP, and Mailing Lists

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Due to some necessary maintenance to some SAN hardware, the department’s website, FTP server, and mailing lists experienced brief outages this evening beginning around 6:24 p.m.

The website and FTP server were only offline for about six minutes, but mail sent to lists handled by lists.eecs.berkeley.edu (Sympa) during the outage may have been delayed up to 45 minutes. I apologize for any inconveniences this may have caused.

The server hosting the department web and FTP services along with the one hosting the database used by Sympa went offline when they unintentionally lost their connection to the SAN during maintenance. The maintenance was last-minute and shouldn’t have caused any disruption, but it didn’t quite go as planned.

Hardware has arrived to allow us to make redundant connections to the SAN for these services which will make them more resilient in future situations like this one. We plan to have the hardware installed and in use soon.

Resolved as of 2008-10-08 19:20:00

Wireless Network Slowdowns

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Some locations for EECS supported wireless services were very slow or disrupted due to a controller issue. The areas affected were HMMB, BWRC, Brewed Awakenings and some of the upper floors of Soda. A controller reboot appears to have solved the issue.

Resolved as of 2008-10-06 13:42:00

Campus VPN migration will temporarily disrupt EECS VPN service

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SCHED OUTAGE campus-wide; Tue 30 Sep 2008; 0252 – 0600

Equipment: Campus/Law/EECS VPN
Location: campus-wide;
Date: Tue 30 Sep 2008; Start: 0252 End: 0600

Description:
On Tuesday 30 September 2008, between 2:52am and 6:00am, the Campus VPN service will be migrating to a pair of load-balanced VPN concentrators. The window begins with our standard nightly campus DNS reload, and extends forward from there as clients pick up the replacement IP address for the new VPN service. By 6am, it is expected that no clients will still be attempting to use the former VPN service for new connections, though existing connections should still
operate as expected until they close.

The cutover should actually be outage-free for all VPN users of the ucbfull, ucbsplit, and Law VPN profiles. However, because the EECS VPN profile involves a specific network configuration that will need to be migrated live, users of the EECS VPN profile will not be functional until towards the end of the outage window.

System and network administrators that operate host- or network-based firewalls should note that the general-use client IP address range of the new VPN service is different. Any firewall
rules that reference the old client subnet of 136.152.208.0/24 should be updated to reference 136.152.208.0/22 instead, which will encompass the union of the old and new VPN services’ client IP addresses. (The EECS VPN will retain its existing client subnet.)

No VPN client changes should be necessary in this migration.

David Paul Zimmerman
IST