Artur Krzywanski » linux

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 …

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 = …

Installing Riak on ec2

Artur — Thu, 16 Sep 2010 10:17:44 +0000

Riak is something like memcached, a data store, key value db. I’m not a programmer so don’t realy know the differance between these two and never used it for anything but I was asked to installl it on ec2 and …

Auto association of ec2 elastic IPs on instance launch

Artur — Thu, 03 Jun 2010 13:18:58 +0000

What a pain is to have to associate elastic IPs when launching Amazon AWS ec2 instances. Think about 15-20 machines which need static (elastic) ip. I solved this problem with a bit of Perl code: First thing You need to …

How to fix Java on Debian Lenny

Artur — Fri, 26 Mar 2010 11:16:19 +0000

This post was previously about getting Amazon ec2 API tools working on Debian Lenny when seeing something like this: user@computer:$ ec2-describe-instancesUnexpected error:javax.net.ssl.SSLException: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-emptyat sun.security.ssl.Alerts.getSSLException(Alerts.java:208)at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1611) After number of comments it looked …

Debian Lenny and quota on /home

Artur — Tue, 26 Jan 2010 16:39:31 +0000

There is a small how to here however it describes how to install on / partition. Here are clear instructions for /home. Login as root, do not use sudo, you will not be able to unmount /home partition if you …

Nagios check_file_age mod

Artur — Tue, 22 Dec 2009 13:41:25 +0000

As I don’t think in seconds about time and more like hours days etc. I’ve added this small bit of code to Nagios check_file_age script to display age in days. I’m using this to check PID file age for service …

Installing memcached and libmemcache on Debian

Artur — Wed, 30 Sep 2009 15:27:39 +0000

memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. To use it with C++ apps you also need libmemcached which is client library …

Find what is eating your disk space using Perl

Artur — Wed, 22 Jul 2009 13:28:29 +0000

A while ago I’ve wrote a small script which I use to pin down the directories and files which suck off the space from the hard drives, usually it’s some user leaving to big log files, unused project files etc. …