MySQL Synchronous Multi-Master Replication

Posted by on December 26, 2011 No comments

We’ve been testing Codership’s Galera for MySQL/InnoDB for several months now, and we love it.

The ease of use is excellent, performance is adequate (depends highly on amount of nodes in the cluster) and finally provides the best (affordable) synchronous multi-master solution for MySQL.

They’re also working on a PostgreSQL version, can’t wait!

Comparison and benchmarks: http://www.slideshare.net/henrikingo/percona-london2011-choosing-mysql-ha-solution-nokia-9972710?player=js

Keep up the good work!

New toy for development

Posted by on August 20, 2011 No comments

For one of our customers, we were looking for a mobile Point-of-Sale (POS) terminal, which would cost less than the bigger names in that market (e.g. Verifone), but would still allow us to develop applications on it.

Read more »

Observium HDD temperature

Posted by on July 20, 2011 No comments

The only sensor missing in my Observium setup, which is quite critical, are hard disk temperatures.

S.M.A.R.T. is supported by almost all recent disks, and provides a lot of information about them, including temperature.

Read more »

Observium IPMI pass-through

Posted by on June 7, 2011 No comments

I’ve already implemented Observium several months ago, and am impressed by the ease of implementation, functionality and overall UI.

I also use Zabbix, but after several years, the graphs were getting very slow to visualize. So we now use Zabbix for problem/warning alerting/notifications, and Observium for our graphing needs.

I wanted to use the IPMI functionality within Observium to graph power and fan data. However, I didn’t have all the management network ports of the servers hooked up to our switch. Read more »

Zabbix call notification with FreeSWITCH

Posted by on April 5, 2011 No comments

Getting alerting/problem notifications via email is useful, but sometimes not enough.

Using Zabbix and FreeSWITCH we can add notification via calls too.

Read more »

New blog

Posted by on March 10, 2011 No comments

Ok, welcome to my blog, blah blah.. This blog is mostly for cataloging interesting and useful snippets of code, commands, applications and website urls.

It will mostly be related to Linux and software development.