Artur Krzywanski » Sysadmin

The ballooning daemon is not running

Artur — Sat, 04 Feb 2012 14:51:21 +0000

That’s the funniest err I’ve seen so far in XenServer. But here’s how to fix it. When you try to start vm you get this: user@computer:$ xe vm-start name-label=vm1The server failed to handle your request, due to an internal error. …

How to install Etherpad on Debian

Artur — Wed, 18 Jan 2012 19:12:33 +0000

Etherpad is a hosted web service that allows really real-time document collaboration for groups of users. It’s like Google Docs, or perhaps Google Docs is like Etherpad on steroids ? Anyway, if you’re looking for a secure real-time document sharing …

Load balanced puppet dashboard

Artur — Fri, 09 Dec 2011 10:41:32 +0000

Puppet dashboard is a useful tool in terms of reporting and actually seeing what’s going on with your puppets. The things get a bit tricky when you have hundreds of nodes reporting every 5 minutes or so and running dashboard …

xenconsole: Could not read tty from store: No such file or directory

Artur — Tue, 29 Mar 2011 15:47:37 +0000

Since I’ve changed my job and joined Rackspace Cloud team I didn’t post anything as I’m still learning new things. Here’s a solution for problems with connecting to xen console. When you run this command to open the VM console: …

Disable root account [Debian]

Artur — Wed, 26 Jan 2011 10:01:14 +0000

One of things I like about Ubuntu is that root’s account is disabled by default and you need to use sudo. Here is how to make Debian work the same way. Install SUDO user@computer:$ apt-get install sudo Add yourself to …

Ruby on Rails and Ruby Gems on Debian Lenny using backports

Artur — Tue, 18 Jan 2011 12:21:34 +0000

There’s a thing about Debian… it’s super stable, but the devs always want newer software, so if they need Ruby you have a choice of compiling it from source as I previously described here or better using the Debian Backports. …

Phusion Passenger, Nginx and multiple location rules

Artur — Fri, 10 Dec 2010 11:04:48 +0000

I’m fairly new to Nginx. I found an very odd problem? with setting up passenger under nginx. Apparently if I define rules for specific locations I have to enable passenger per location. Here is example config: server { server_name www.example.co.uk; …

Arrays and hashes in puppet templates

Artur — Tue, 09 Nov 2010 09:46:51 +0000

Hashes are grate way to organize data in any language, this post will demonstrate how to get to grips with hashes and templates in Puppet. So you need to produce something like this in a file: public static $data = …

Puppet templates and default values for variables

Artur — Wed, 27 Oct 2010 14:25:00 +0000

Puppet supports templates and templating via ERB, which is part of the Ruby standard library and is used for many other projects including Ruby on Rails. While it is a Ruby templating system, you do not need to understand much …

Writing custom facts for puppet

Artur — Mon, 11 Oct 2010 20:49:22 +0000

Puppet uses facts to get basic information about a server on which it runs. When you need ip address of the machine you just add $ipaddress to template or anywhere else you want to use. Unfortunately when this facter variable …