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

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 […]

Share

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 […]

Share

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 […]

Share
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 […]

Share

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 […]

Share

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 […]

Share

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. […]

Share

  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 […]

Share

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 […]

Share
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 […]

Share

Background I use MythTV quite frequently and noticed that it is instable when using sasc-ng as a decoder to decrypt encrypted DVB-T channels. So approximatly every third day the MythTVbackend server stops and need to be started again. I have wriiten an earlier article about howto monitor MythTV with Nagios or op5 Monitor so I […]

Share

Background This article describes how to monitor an IPSEC tunnel running on OpenBSD. I could not find any plugin already done so I created my own. The pre req. for this article are: A working Nagios or op5 Monitor setup A IPsec VPN tunnel running on OpenBSD A working NRPE agent at the OpenBSD box

Share

Background This article describe howto use a USB camera (also known as webcam) to detect motions and send an alarm to Nagios or op5 Monitor. It can be used in datacenters to send an alert if someone or something is moving or at home to detect if someone is in your house. I will place […]

Share

When using a database that are business critical it can be a good idea to monitor the internals. This article describe how-to monitor MySql with Nagios or op5 Monitor. In these case it runs a MythTV system but it could be almost anything. Pre requirements The pre requriements for this article is a working Nagios […]

Share

There are several ways of monitor a wordpress blog by using Nagios or op5 Monitor. WordPress uses the following parts to work: Webserver frontend PHP scripts MySQL database backend At least one system to run it on I found one article describing howto monitor the Webserver and the MySQL database and even that a certain […]

Share
03
Mar

Background My blog that uses MySQL as the database backend suddenly got real performance issues. The symptoms where: All my Nagios test failed from time to time with NRPE timeout The performence of my dynamic webpages was terrible slow. The load on the system showed very heavy load, more then 10 for  1, 5, and […]

Share

This article describe howto get a 1-wire humidity probe to work with Nagios or op5 Monitor. In an earlier article I have described a 1-wire temperature plugin. Pre requriments To get it working you need: 1-wire humidity probe i.e. this, it is based on DS2438 & HIH-4000 A working owfs installation, instructions can be found […]

Share

This article describe howto monitor an Asterisk server with Nagios or op5 Monitor. Pre-req to get it running is a working Nagios or op5 Monitor installation and an Asterisk 🙂 Theory In my implementation of Asterisk I have a couple of softphones, 2 hardphones and connections to two SIP providers. I want to monitor the […]

Share
09
Feb

My firewall get alot of failed ssh logins. This is a typical log message in /var/log/authlog Feb  9 20:15:49 pedro sshd[30934]: Failed password for root from 67.205.85.119 port 35603 ssh2 Feb  9 20:15:49 pedro sshd[2656]: Received disconnect from 67.205.85.119: 11: Bye Bye Feb  9 20:15:51 pedro sshd[15299]: Failed password for root from 67.205.85.119 port 35753 […]

Share

This guide describe howto install and configure SNMP on Ubuntu. In an earlier article I have described howto set it up on RHES or CentOS, it is slightly different in Ubuntu.     1.Installation root@ibsen:~# sudo apt-get install snmpd Reading package lists… Done Building dependency tree       Reading state information… Done The following packages were automatically […]

Share

At my home the most critical system is the MythTV system and a MythTV downtime will create a revolt at home. This article will describe howto make sure that a MythTV backend can be surveillanced with Nagios or op5 Monitor. I have in earlier articles described howto install and configure both the backend and the […]

Share
20
Jan

I have a modern laptop with 4Gb memory so in theory I should gain from running 64 bit Linux. I installed Ubuntu 8.10 Desktop x86_64 and had som problems with: Java based webpages Flash I spend several hours with google and tested several versions av java and flash plugins. I managed to get flash running […]

Share
16
Dec

op5 are proud to announce that op5 have released op5 Logserver 3.3.0 This is a minor upgrade. Whats new? Summary Reports Bidirectional editing of filters Hierarchical filters Configurable deafult filter per user Bugfixes Read more about it in the release-notes and changelog

Share

I have hinted about automysqlbackup in an earlier blog. Of course an important script like this should be monitored by Nagios or op5 Monitor. In my opinion the correct way of doing this is using a passive check that sends in the result of the backup into Nagios or op5 Monitor. The backup script is […]

Share

In some cases the "Normal" way of running checks does not work, passive checks might do the job. I have a script the runs every night that backup my MySQL database. If this script fails I would like op5 Monitor or Nagios to send a notification. An active check will not work in this case […]

Share




Book reviews
FreePBX 2.5
Powerful Telephony Solutions






Asterisk 1.6
Build a feature rich telephony system with Asterisk






Learning NAGIOS 3.0





Cacti 0.8 Network Monitoring,
Monitor your network with ease!