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Instructional & Research Information Systems

ACG Web/Database Applications

ACG Web/Database Applications

Miscellaneous services affected by project space outage

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Last night’s outage of project.eecs caused a few other services to misbehave this morning. We believe all services are functioning as of around 11am.

An automatic process that generated configuration files for our DHCP server was generating truncated files, causing DHCP service to be out for some clients. That was resolved around 9:15am.

The server iris.eecs had some email stuck in its queue related to recent laptop purchase requests. Fixing that required a reboot of the server, and iris.eecs was down from around 10:30am until around 10:50am.

The ACG application server buffy.eecs apparently hung last night due to the project.eecs outage. It was rebooted this morning around 9am.

Resolved as of 2012-06-18 11:00:00

Web, Mailing List, Jabber outage May 9th, 6am

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Due to a major reorganization in the IRIS Data Center, numerous IRIS services will be unavailable 6am-8am, Wednesday May 9.

The servers that support the department’s website, the IRIS website, jabber, ACG applications, the print spooler, the Windows Terminal Server, and the department’s mailing lists will all be physically moved to new locations. Extensive prep work has been done to minimize downtime to the absolute minimum, and we hope that most services will be up sooner, but we are allotting 2 hours for this work.
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UPS Installation/Various System Outages

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Delivery is expected Monday for our new UPS which will be installed in the 290 Soda Hall server room. Some services will be down for short periods on Tuesday while they are moved off of room power and onto temporary power. Later in the week, there will be a second outage while those machines are moved onto the new UPS. Additionally, there may be a longer outage of our storage systems while some upgrades are done.

While I realize that this post is somewhat vague, a lot depends on exactly when the UPS is delivered and how long it takes to install it. I will be posting more refined notes to narrow down the scope of what services will be out (and when) as time goes on.

While we realize that there may be some inconveniences for some, please bear with us as we strive update our services and minimize outages for the future

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Unscheduled Outage of Several Departmental Services

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A hardware failure and caused a temporary outage to the department’s Storage Area Network (SAN). The department’s web site, mailing list server, jabber serve, and the ACG application server (buffy) were all affected.

The virtual cluster that hosts these services is being restarted and services should resume by 3:30 pm.

Resolved as of 2010-11-11 15:05:00

IRIS Website, ACG Applications down for maintenance, June 23

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The IRIS website (iris.eecs) and the ACG Application Server (buffy.eecs) will be unavailable 6am-8am on Wednesday, June 23rd due to maintenance on the backend database server.

These websites use the IST Oracle Database service, which will be down for operating system upgrades during this time.

This work has been rescheduled from the original scheduled date of June 16th.



Resolved as of 2010-06-23 07:40:00

Dept Website, Mailing Lists, ACG Applications down 4/1, 9pm

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The department webserver (www.eecs/www.cs), mailing list server (lists.eecs), Jabber server (jabber.eecs) and ACG’s application server (buffy.eecs) will be down for maintenance 9pm-midnight on Thursday, April 1.

These services all run on a virtualized cluster. The cluster storage will be undergoing maintenance that requires all systems to be shut down. We expect the total downtime to be less than 2 hours, but are scheduling 3 in case of unexpected problems.

This is a reschedule of the maintenance of March 12th which was not successfully completed. I have installed some additional patches on the system which should avoid the problem which occurred on 3/12.

If successful, this will be the last time we ever have to do this very intrusive maintenance. Additionally, this will allow us to retire some buggy software on our SAN which has been the cause of previous department-wide storage outages.

Resolved as of 2010-04-01 23:11:00

Dept Website, Mailing Lists, ACG Applications down 8-9pm

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The Dept Website, Mailing Lists server and, ACG’s Application server will be down 8-9pm tonight for a storage migration. The Storage Area Network (SAN) that these servers utilize is being reconfigured, requiring the server data to be copied to a new area.

Beginning at 7pm these services will be operating in a degraded mode while preparations are made. During this time less computing power will be available and the web servers might be slightly slower than normal. At 8pm all servers will all be shut down while the data is copied over. This should take approximately 20-30 minutes, but we are scheduling 1 hour in case of unexpected problems.

This maintenance will allow us to retire some buggy SAN management software which has been the cause of most of our recent storage outages.
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IRIS website, ACG applications offline March 3, 6:30-7:30am

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IST will be restarting our Oracle database server between 6:30 and 7am on Wednesday, March 3. The IRIS website and ACG’s applications will be unavailable during this time.

IST reports that this restart is “to increase large-page memory, allowing us to start up new customer databases”.

Resolved as of 2010-03-03 06:46:00