Fubaredness Is Contagious

Dmitriy Samovskiy’s Blog

Entries Tagged as 'linux'

Don’t Use OpenDNS On Servers

April 17th, 2009 · 1 Comment

Are you thinking about using OpenDNS in your servers’ /etc/resolv.conf? Don’t. Why? Because when OpenDNS receives a query for a non-existing name, instead of returning NXDOMAIN (essentially name you’re looking for does not exist), it will return some IP, which probably is meant to catch typos, misspelt URLs or phishing attempts. Works great for humans [...]

[Read more →]

Tags: linux

Compiling Erlang On Linux With Old Glibc

April 14th, 2009 · Comments Off

I recently wanted to compile Erlang (in order to install RabbitMQ) on a Linux box with old glibc (2.3.2, from days of Red Hat Linux 7.0). It was the only out-of-date component, everything else was quite fresh – GCC 4.3.3, binutils 2.19.1.
Version of Erlang I used was R12B-5. I configured it with ./configure –disable-x –enable-threads [...]

[Read more →]

Tags: erlang · linux

EC2 Instances Always Boot to Runlevel 4

June 20th, 2008 · Comments Off

It appears that Amazon EC2 instances always boot to runlevel 4, no matter what runlevel you set as default in your /etc/inittab. I found a very old reference to this fact in forums (see here), which explains *how* it happens (XEN does it) but doesn’t explain *why*. And yes, by passing “4″ as last argument [...]

[Read more →]

Tags: linux · virtualization

One year at CohesiveFT

April 10th, 2008 · 4 Comments

Yesterday was 1 year since I started at CohesiveFT. New things this year (in no particular order):

Mac. I got a Macbook Pro as my work laptop. Feels great every time I sit down to work, even though I am not a very demanding desktop user – browser, email, IM, rss reader for non-public feeds, [...]

[Read more →]

Tags: linux · python · rabbitmq · ruby · work

EC2 for Web Hosting

February 29th, 2008 · Comments Off

Lack of persistent disk out of the box and IP addresses that are not preserved between reboots are indeed the 2 primary issues that make hosting public web sites on Amazon EC2 “tricky” (even though not impossible).
Instead of addressing the problem head on, have you considered multisourcing your infrastructure? Let Amazon EC2 host your [...]

[Read more →]

Tags: linux · technology