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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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EECS Listserver and Jabber/IM down due to database problems

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Starting last night around 10:50PM, the [EECS mailing list service]( https://iris.eecs.berkeley.edu/15-faq/mailinglists/) and the [EECS IM service (Jabber/XMPP)](https://iris.eecs.berkeley.edu/15-faq/35-unsupported/04-jabber.html) went offline due to problems communicating with a backend database server.

Staff are looking into the problem. Please note, as [help@eecs](https://iris.eecs.berkeley.edu/help/) is a mailing list on the EECS listserver, staff may not be get problem reports sent there until after this problem is resolved. Please check here for updates until these services are back up.
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Mailing List Server Delays

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The Department’s mailing list server, lists.eecs, was not delivering mail starting around 11am until 2:15pm.

Due to issues with the department’s LDAP directory, lists.eecs stopped processing messages around 10:57am. Once the ldap server was restarted, lists.eecs was restarted around 2:28pm.

By around 3pm, all queued messages seem to have been delivered.

Backup plans are being put in place to manually recover from future LDAP outages.

Resolved as of 2011-01-14 14:15:00

Brief outages to a number of services, *rescheduled* Dec 20, 5-7pm

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A number of Department services will experience brief outages between 5pm and 7pm on Thursday, Dec 16th for SSL Certificate renewal. These services are:

* www.eecs / www.cs and other IRIS-hosted websites
* lists.eecs mailing list web interface
* jabber.eecs IM server
* iris.eecs IRIS website
* wiki.eecs IRIS Wiki hosting

No service should be down for more than 10 minutes.

[SSL Certificates](https://secure.wikimedia.org/wikipedia/en/wiki/SSL_certificate) are needed to secure connections to the servers. They typically expire every 1, 2, or 3 years. We are installing 3-year certificates at this time.

Advanced users may want to know that we are switching to a new Certificate Authority at this time. Please see [the Nov 4th IRIS News article](https://iris.eecs.berkeley.edu/news/4591-new-ssl-certificate-service) for information on this new CA.
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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.
[Read more…] about Dept Website, Mailing Lists, ACG Applications down 8-9pm

Brief Outage for Dept Website and Other Services, Thursday 8am

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The Department website (www.eecs/www.cs), mailing list server (lists.eecs) and ACG application server (buffy.eecs) will be offline from around 8am-8:15am Thursday morning.

The Storage Area Network (SAN) that serves these machines will be reconfigured at 8am which will result in a brief outage. Ideally all services will remain available but service might be disrupted for ten to fifteen minutes.
[Read more…] about Brief Outage for Dept Website and Other Services, Thursday 8am

Unplanned outage of some IRIS Services

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The Storage Area Network (SAN) that hosts the virtual machine images for www.eecs, buffy.eecs and lists.eecs briefly stopped serving the storage around 1:45am. The virtual machines stopped at that time and were restarting this morning around 9:45am.

The SAN software that is causing this problem is due to be retired in the next few weeks.

Resolved as of 2009-12-29 09:45:00