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How to fix error when moving events between calendars

Recently, I noticed “Failed to save changes” error when tried to move events between distinct calendars. After a short investigation I found that this bug is already fixed, but not packaged for an easy upgrade, so I will shortly describe how to apply fix for Debian Wheezy and Kolab 3.3.

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How to monitor Kolab processes

I have been using self hosted Kolab Groupware everyday for quite a while now. Therefore the need arose to monitor process activity and system resources using Monit utility.

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SysOps

Kolab – SSL certificate authentication (web-based interface)

This weekend, I have spent some time investigating SSL certificate-based authentication and implementing it in Kolab web-based user interface. This topic is fascinating but definitely too broad to be briefly described in a single blog post, so do not look at it as a complete solution, but treat it only as a proof of concept.

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SysOps

Kolab 3.1.5, Debian 7.5 and issue during setup process

After a longer period of time, I have decided to install Kolab and use it as a personal information manager. The installation process went as expected until the setup process tried to install the Roundcube database and failed miserably.

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Kolab – How to integrate Dokuwiki

Brief description of the Kolab Groupware integration with Dokuwiki.

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Kolab – How to integrate Tiny Tiny RSS

Brief description of the Kolab Groupware integration with Tiny Tiny RSS.

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WebOps

Kolab – How to integrate Piwik Web Analytics

A quite lengthy but very straightforward description of the Kolab Groupware integration with Piwik Web Analytics. The integration process is simpler than you think as the additional application (Piwik) is hosted externally and doesn’t use a single sign-on.

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Kolab – High CPU usage after adding a few aliases

Yesterday I added a few mail aliases using Kolab admin interface and went to sleep. Today I noticed high CPU usage and quickly found that there is a small problem with pykolab 0.5.11-5 package.