Status of E125 Computers
Today I logged into all of the apes that are dual boot (booted them in linux and checked if I could login) Name Baboon Lemur Gibbon Tamarin Gorilla Chimp Login? yes yes yes yes yes No, see later OS F14 … Continue reading
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Installing VirtualBox on our Linux Clients
With some effort and frustration, I got VirtualBox running on four of our CentOS 6.3 client machines, jay, finch, lark, and robin. It can now run headless VMs that (re)start when the host (re)boots, and can even run 64-bit guests, … Continue reading
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Install MySQL module for Python
There’s a package (Python module) that interfaces a Python Script with a MySQL database back-end. It’s called MySQLdb. For example: [root@puma ~] python2.4 Python 2.4.3 (#1, Jun 18 2012, 08:55:23) >>> import MySQLdb >>> [root@puma ~] python2.6 Python 2.6.5 (r265:79063, … Continue reading
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case of the missing quota emails
Generally, users receive emails warning them if they are near or over their quota usage. However, users haven’t been receiving these notifications for some time now, which is mysterious. I checked /root/sysadmin/bin/ for quota-related scripts, i.e., scripts containing the word … Continue reading
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recapping status of backups
We have several layers of backups for our data. BigData (drive enclosure T) is a 2.7 TB drive with backups for a week. tempest (drive enclosure V) has backups for 90 days (it’s useful to have incrementals). There’s also a … Continue reading
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ssh vs su on CentOS clients
We have a mystery on the CentOS workstations. ssh works, but su does not. Here’s an example: [luser@gibbon ~] ssh anderson@gibbon anderson@gibbon’s password: Last login: Wed Sep 26 10:56:41 2012 from gibbon.wellesley.edu [anderson@gibbon ~] logout Connection to gibbon closed. [luser@gibbon … Continue reading
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ssh keys
I just tried to ssh from Puma to Gibbon (as root) and got the following: [root@puma ~] ssh gibbon @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could … Continue reading
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Reptiles!
I switched the sshkeys for the new machines mv /root/sshkeys/ballroom.wellesley.edu/ssh /root/sshkeys/iguana.wellesley.edu and then check and make sure all the permissions are right in the files. And I removed all of the old, now empty directories. and changed the names in … Continue reading
Quota for CS349B students
Apparently Tyler gave his 349B students last semester access to another large drive that was mounted in their /home directories. Now when they do “quota” it doesn’t give an accurate reading. I tried to read the quota script, but it … Continue reading
Installing LimeSurvey
Lyn and Mike want to install LimeSurvey on Tempest. Given that it requires PHP and MySQL, and I’ve been having trouble with that combination, we may be in for trouble, but maybe something will go well. First, we need to … Continue reading
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