Specifying dom0 RAM in Xen – update
Posted by in Xen on June 5, 2012
Another thing from the xen-users mailing list: Apparently the way to specify the dom0 RAM at boot in Xen has changed. You should now specify the maximum memory – dom0_mem=2G,max:2G instead of dom0_mem=2G. Also, a new addition to the Xen Best Practices suggests preventing Xen from auto-ballooning the dom0 memory down by changing autoballoon in […]
Google Apps, multiple domains, and other related things
I’ve decided to actually get around to creating a portfolio site. Bought the domain, but have done… nothing. Oops. First off, email and DNS takes time to propagate, so I decided to get Google Apps set up with that domain to be able to send & receive email from that domain. But I had decisions […]
You know you need more RAM when…
Posted by in Sysadmin on May 10, 2012
aka, my errors, let me show you them. or, inadvertent DDoSes are fun when you do them to yourself! finally, A: “I can see 4GB of RAM but I can only use 1.5.” Q: What is “Why I loathe 1and1”? sudo -i sudo: unknown uid: 10003 sudo: cannot fork: Cannot allocate memory -bash: /usr/bin/sudo: Argument […]
Quick tip: Use a QR code to get a site on your mobile device before you leave the house
Posted by in Personal on May 8, 2012
A few times I’ve been in a rush to get somewhere, but have an article or two open on my screen that I’m in the middle of reading. Before I got a shiny new Galaxy Nexus, I used to email the link to myself, and open the email and then open the link. It wasn’t […]
3 things about backups
Posted by in Sysadmin on May 5, 2012
In this post I’ll talk about 3 things about backups that you should know. At the end of it, you should understand the different types of data involved in a backup, and some programs which can help you with the backups. 3 different types of data (Or, why not all data is equal) Data can […]
cron screwyness
Posted by in Linux on May 2, 2012
While trying to diagnose a problem with my VMs (namely, why starting a fedora 16 based vm fails to bring up the network connection), I ran into a strange issue – on my dom0 and some of the domUs, logrotate hasn’t been running, leaving me with insanely long logfiles! So I set out trying to […]
Defining the dom0 memory limit in GRUB2
Posted by in Xen on April 30, 2012
Before I upgraded my dom0 to Fedora 16 (and by association Grub2), I had the dom0 memory limit fixed as an argument in grub.conf. When I upgraded to Grub2, I initially added it manually to the Xen boot command line, but eventually stopped doing that. Today while looking through the xen-users list, I found an […]
Fun with Python and image processing
Posted by in Photography, Programming on April 27, 2012
Today I got to work with something I’ve been meaning to for a while – Image processing with Python, in particular the PIL/Pillow library. (Pillow’s a forked, more up to date version of PIL, and it’s in PyPi.) So about 30 minutes after planning and googling and reading the docs, I have a first version […]
One more time…
Posted by in Personal on April 26, 2012
Went back to SAFTI today to see people. Can’t say I miss working there, but I do miss the people and the camaraderie. But it was nice to actually sit and talk to people after being in Canada for a month, and only talking to people over a fairly bad Skype connection. Also started polishing […]
Updating phpBB
Posted by in Sysadmin on April 24, 2012
I’m one of two people who helps with sys admin tasks for the webcomic Twokinds – astute readers will recognise the comic name because I ended up doing the RSS and archive scripts for Tom too. But recently I decided to update phpBB and the VPS. Get everything up to date wherever possible. The VPS […]