Chromium and FreeIPA

While Google Chrome Is only in Beta at version 9 for Linux, the upstream project, Chromium, has all the latest features. Spot has provided a repo with packages for some of your favorite platforms.

For development, I run the browser on the same serve that I install freeipa-server on. To get it to run,:

chromium-browser --auth-server-whitelist=`hostname` --auth-negotiate-delegate-whitelist=`hostname`

The unit tests don’t run using the file: protocol, but I’ve run them against the Static site and they run fine.

Home on LeGrange

(To the tune of “Home on the Range” in case you hadn’t guessed)

Oh give me a place
Up in near outer space
Where a rocket will surely convey
A space station to sit
In a stable orbit
One that will never decay

Home, Home on LeGrange
At the junction of gravity’s range
A space station can sit
In a stable orbit
One that will never decay

On Hierarchy

The book “On Intelligence.” is one of the most intriguing I’ve read in a long time. I read it as context to understand Dilpeet George’s thesis which is based around the concept of “Hierarchical temporal memory.” or HTM for short. HTM is a mathematical model of a learning machine based on the organization of the neocortex of the mammalian brain. HTM is a tree, with a complex interface between the nodes. At the bottom of the tree are the sensors: touch, light, sound, smell. At the top it the hippocampus, which seems to have its own rules. The focus in HTM is the nodes between root and leaf.

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Building FreeIPA

Here’s the short version, what I did on F14.

yum -y groupinstall  "Development Tools"
git clone git://git.fedorahosted.org/freeipa.git
cd freeipa
yum install -y `grep BuildRequires: ipa.spec.in `
make all rpms
yum localinstall --nogpgcheck -y dist/rpms/*rpm
yum -y install bind-dyndb-ldap
#Dogtag is broken on F14.  There is a workaround.
ln -s /usr/share/java/xalan-j2-serializer.jar /usr/share/tomcat5/common/lib/xalan-j2-serializer.jar 
ipa-server-install -U -r ` hostname  | tr '[:lower:]' '[:upper:]'`  -p freeipa4all  -a freeipa4all -u admin --setup-dns --no-forwarders