Technical Staff Blog

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The CS Department mailing list server was down for much of today after an update caused a local misconfiguration.  An update to our Sympa software which was automatically installed overnight broke a local configuration script and caused the service to be unresponsive from around 12:30am this morning until about 7pm this evening.  No messages ...

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The system database was down this morning between 12:25am and 1:40am.  The pgpool proxy server failed on host mallo, which is the backup server but was acting at the time as the primary.  Failing over to the the usual primary server, carvel, restored services.  During this period services which rely upon the database ...

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Starting Thursday, December 22, 2016, filesystem backups will be retained for only six months.  Currently they are kept for forever.  At the same time, files will be backed up more frequently (as often as hourly) rather than just once a day.

This change is part of our migration to CIS file services.  Our daily backup ...

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It was an interesting start to a Wednesday morning...

As you're probably already aware, there was a short blip in connectivity/functionality this morning that blocked our SSH gateway, logins and general use of the department's systems.  Our GPFS file system was overwhelmed, which resulted in a kind of traffic jam of requests ...

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ibm-gpfs.jpg Starting at 7am on Wednesday, Nov. 9th, we will be performing rolling upgrades of our departmental GPFS NFS cluster. Each server upgrade can potentially cause a brief 90 second NFS blip for departmental linux machines. We expect the maintenance to be completed by 8am. The compute cluster linux machines and external facing services are not ...

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network-2400px.png CIS replaced the 5th floor UPS in the switch closet this morning. Unfortunately, two of the switches failed to boot up again. CIS is working on replacing the failed switches, we will update you with an ETA once CIS provides us an update.

UPDATES:

08:02: CIS estimates it will be another hour before the ...

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ibm-gpfs.jpg We will be upgrading GPFS from 3.5 to 4.1 on the CIFS cluster on Wednesday, Oct. 26th, between 7am and 8am.  The cifs.cs.brown.edu server will unstable during this maintenance window .  We recommend users logging out of their managed Windows machine before the 7am, Wednesday, Oct. 26th maintenance window.  

More info ...

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All linux desktop machines will be rebooted this Tuesday, October 25th, at 5:00am. 

Please save your work before that time. If you wish to reboot before Tuesday, you may run the command:

   /local/bin/kstatus

to see if your machine is ready to reboot. If it is, ask a tstaffer to do it (by ...

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During a routine update of our firewall there was an unexpected outage, which we are working to identify the cause of.  Most systems and connectivity have already been restored and the remaining systems will be brought back online in just a few minutes.

If you continue to have trouble after 4pm, please email problem@cs ...

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