Welcome to It-Slav.Net blog
Peter Andersson
peter@it-slav.net

I've already got a female to worry about. Her name is the Enterprise.
-- Kirk, "The Corbomite Maneuver", stardate 1514.0

I have an old iPod G3 player that I haven’t used for several years. The main reason is that it is full of Apple vendor lock-in "features". The most annoying issues are: Hard to manage without iTunes iTunes is crap Cannot play ogg and flac I just want to attach it and it should popup like […]

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12
Feb

  Background I was with my geekfriends at a ski resort and I managed to get an Internet connection using a cellphone. Of course I wanted to share it with my friends. As geeks we brought a switch and a couple of ethernetcables.   Solution Using this script on a Ubuntu 9.10 I managed to share my connection: sudo […]

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  Background At op5 we often run into BizTalk at customer sites as a business critical application. We have done an investigation and come up with a plugin  to monitor BizTalk. To fully understand this document BizTalk knowledge is necessary.

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My laptop and cellular phone has both Bluetooth and it has annoyed me for a while that I have not managed to get a working Internet connection using Bluetooth. I have only managed to get it working with a USB cable between my phone and laptop.   After some Google search and reading of man pages […]

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18
Jan

Every computer geek ends up with a bunch of disks with unknown status in the drawer. It can be rather cumbersome to put them in a machine and check the status especially if some are SATA and others are PATA, it gets even more complicated if they are mixed 3.5" and 2.5". In situations like […]

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I have owned a PSP for several years. It is a fabulous machine with real impressive hardware and possibilities. The big problem is that Sony tries to look in the owners so the potential of the hardware is not there. There has been way around that by installing cracked firmware. The main obstacle has been […]

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Filled Under: english, Hints

After the problems I have had with Bredband2, I want to test Phonzo.se as a new VoIP provider. I registered on their homepage and after a couple of days I got a snail mail with my credentials. I configured my FreePBX and calling in worked directly, but not outgoing. After 2 hours of troubleshooting I started to google "phonzo asterisk" and […]

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Background I was reading the Swedish computer magazine, Tech World. There was an article about an appliance solution that could give a report about unused switch ports. The box PortIQ from Infoblox costs approximatly 10.000 Euro. op5 has developed this feature at a customer site and is included with op5 Monitor, op5 has published the code […]

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  I have read the excellent book Asterisk 1.6, Build feature-rich telephony systems with Asterisk by David Merel, Barrie Dempster and David Gomillion.   The book is inteended to anyone interested in bulding a telephony system using Asterisk and are 224 pages. The book claims that no preknowledge about opensource, Linux and Asterisk is required. I think […]

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Filled Under: asterisk, english, Hints

Background This article will describe how easy it is to integrate other tools to Nagios or op5 Monitor. I will use an example with a webshop where a business view of how the webshop is doing is implemented by using a GPL’d rule engine, NodeBrain. I have in an earlier article described the ruleset for this […]

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18
Oct

Many people have received their 4.6 CDs in the mail by now, and we really don’t want them to be without the full package repository. ———————————————————————— – OpenBSD 4.6 RELEASED ————————————————- Oct 18, 2009. We are pleased to announce the official release of OpenBSD 4.6. This is our 26th release on CD-ROM (and 27th via […]

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16
Oct

An interesting article in Washington Post describe how to increase the IT security, the answer is simple: Do not use windows This is knowledge that is well known to most people in the IT industry, the interesting part is that this knowledge is now being transfered to common people and an article in Washington Post […]

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Filled Under: english, Hints

Background When I worked as a Tivoli Consultant I spend a lot of time investigating the customer processes and workflow and try to make the monitoring solution to support this. It was often long term projects and involved alot of people like, project managers, support staff, maintenance staff, application owners, applicataion engineers, operating systemens managers, DBAs […]

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In RedHat, CentOs and Suse and probaly other Linux distributions, the way of enabling and disabling a service at reboot is by using chkconfig. In ubuntu, the way of turning on and off a services at boot is by using update-rc.d. It changes the links for the init scripts.   To start a script in […]

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op5 AB is a world leading OSM – Open Source Management – company that delivers software based on open source for control of IT systems and networks. The award winning op5 Monitor is now released with important enhancements that will enable customers and other vendors to further improve usability and integration for optimized IT monitoring. […]

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15
Sep

op5 Announces Global Partner TruePath Technologies, Inc. For U.S. Markets FOR IMMEDIATE RELEASE -August 5, 2009-Swedish OS Management IT monitoring software developer, op5, announced today their partnership alliance with American company TruePath Technologies, Inc. – one of the premier monitoring service companies in the United States.

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Filled Under: Hints, op5

  Next week, op5 will release the new Nagios GUI called Ninja. The license is GPL and several people has reported the GUI work perfectly well on vanilla Nagios. Ninja uses a database backend. Merlin, another op5 developed software feeds the Nagios information into the database. Links: op5 -OpenSource based management software company Ninja– Nagios […]

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05
Sep

I noticed that my blog become slower and slower by using op5 Monitor and webinject, see previous article. From installation 2.5 seconds to over 7.5 seconds to run my testcases. The most annoying was that the it was a very linear increase see graphs below. My first try was to tune MySQL By installing wp-cache […]

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Op5 has written an excellent article howto monitor Esx3.x, ESXi, vSphere 4 and vCenter Server with op5 Monitor. This article is op5 Monitor centric but op5 Monitor is based on Nagios so this article can be used to implement Nagios vmware monitoring. The plugin used to gather the information is GPLd and developed by op5. […]

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Background This article is describing best practice I have collected after a 10 year period with Systems- and Network  management. My role has varied between consultant, trainer, systems engineer, project manager and architect.   Very many programs creates log files. They are great for trouble shooting and in some cases the only place to find […]

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Filled Under: english, Hints, sysadmin
27
Aug

Background As a former Novell employee there is one software I really miss and that is iFolder. It is an excellent file syncronization software. You configure iFolder where your local iFolder files are located and what server to syncronize against. Do a sync and now they are avilable at any iFolder instance if you sync […]

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I have moved my blog from one system to another and at the same time upgrade to the latest and greatest WordPress version. Using the default link structure in WordPress gives links like: http://www.it-slav.net/blogs/?p=115 when a more logical link name is: http://www.it-slav.net/blogs/2008/11/17/op5-monitor-or-nagios-plugins-for-1-wire-temperature-measurement/ The more logical name gives date and title of the blog post instead […]

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I’ll attend this years Slackathlon in Stockholm. I hope I will see you there Welcome to this years Slackathon! It will be held August 15th, at the Stockholm University, though not in the same conference room as the previous years, since it couldn’t hold all visitors anymore! As previous years, the website is slowly getting […]

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03
Jul

At op5 we are using Webex as conferance tool. I’ve been struggeling to get it running on Ubuntu 9.04 and I have finally got it to work. Just run: sudo apt-get install ubuntu-restricted-extras sudo apt-get install libstdc++5 and now it works perfectly well.

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Filled Under: Hints, Ubuntu

An interesting article describing howto use Skype to send SMS notification for Nagios or op5 Monitor can be find here: http://wiki.nagios.org/index.php/SkypeSmsNotification My recommendation is to use an GSM modem to send SMS, because if the network is down no SMS can be sent with this solution and SMS is normally used as an alternative alarm […]

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Book reviews
FreePBX 2.5
Powerful Telephony Solutions






Asterisk 1.6
Build a feature rich telephony system with Asterisk






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Cacti 0.8 Network Monitoring,
Monitor your network with ease!