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Hi there! Welcome to my blog. My name is Ivan. I am a Dutch IT Professional working as Principal IT Consultant. Read more about me..

News, Problem Solutions and Other Interesting Information...

Ubuntu JeOS 7.10 VMWare Tools installing issue

Posted by Ivan
/ May 22, 2008 / 1 Comment

Today I hit my first problem when creating a new JeOS virtual appliance based on Ubuntu. After I mount and extract the VMWare tools; I tried to run the ./vmware-install.pl script and got the warning below. /tmp/vmware-tools-distrib/vmware-config.pl The following VMware kernel modules have been found on your system that were...

Posted in Ubuntu
Cacti RRD graphs are not updated and the application slow

Posted by Ivan
/ April 17, 2008 / 1 Comment

I have two identical Cacti (0.8.6h) virtual machines and both based on CactiEZ version 1 installation. I have been migrating the virtual machines between different Vmware hosts and at some point my second Cacti appliance did not update the RRD graphs and using the web interface was very slow. I...

Posted in Cacti
WordPress version 2.5 upgrade

Posted by Ivan
/ March 31, 2008 / Leave a comment

Two hours ago I upgraded Networknet.nl with WordPress version 2.5 and immediately after the php binaries and database were upgraded I hit my first problem. Within my Widgets Design Sidebar I have the Pages widget which shows all pages on the right side of my blog starting with “About me”.....

Posted in OpenSource
Openfiler service fails to start

Posted by Ivan
/ February 28, 2008 / Leave a comment

At some point my lab Openfiler was assigned static ip address and the iSCSI target stopped to function; also it was not reachable by the web interface at tcp port id 446 anymore. Several reboots did not help to solve the problem. What happened? The network interface configuration was changed....

Posted in Openfiler
Use Cacti to monitor your network latency

Posted by Ivan
/ February 3, 2008 / 33 Comments

If you are managing and monitoring a network you will probably be interested to keep an eye on the latency of your network links. Especially for those links which are connected with a dedicated internet connection and a IPSec VPN tunnel to the datacenter. Latency is predictable but for non...

Posted in Cacti, CentOS
CactiEZ 0.30 Device Tracking Management error save failed

Posted by Ivan
/ January 29, 2008 / 3 Comments

After installing CactiEZ 0.30 and you start using the Device Tracking Management (MacTrack plugin) area you may receive the following error when creating new site or device. Error: save Failed. This error is being generated by the Cacti system because there are no tables in the Cacti database. Login...

Posted in Cacti
CactiEZ 0.3 download and install tutorial VMWare Workstation

Posted by Ivan
/ January 27, 2008 / 6 Comments

In this tutorial I am going to show you how easy it is to install CactiEZ appliance and run this as a virtual guest appliance in VMWare Workstation. After the installation the virtual guest is portable and can be moved to a VMWare Server installation. Note from http://cactiusers.org what CactiEZ...

Posted in Cacti, VMWare
CentOS Cacti Appliance (CactiEZ) and snmp configuration

Posted by Ivan
/ January 8, 2008 / 1 Comment

I am running CactiEZ VMWare appliance for a while and couple of graphs I was looking for were not integrated in the SNMP configuration. CactiEZ is based on CentOS linux distribution. Verify SNMP Daemon is running Rename the default configuration file Create new file with your own SNMP configuration Reload...

Posted in CentOS
CentOS how to install VMWare tools?

Posted by Ivan
/ November 21, 2007 / 4 Comments

If you are working with a virtualization platform then most of the time some components are needed for host integration. I have installed my CentOS virtual machine on a VMWare Server host and now I want to install the VMWare tools. How to install VMWare tools on a CentOS operating...

Posted in CentOS
CentOS how to change hostname?

Posted by Ivan
/ November 21, 2007 / 37 Comments

I personally prefer to install CentOS as my linux distribution. Today I needed to change the hostname of my virtual guest machine running CentOS. How to change hostname of a CentOS system? There are several ways to do that but I am using the old way. VI is my friend and still...

Posted in CentOS

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Welcome to Networknet Blog!

News, Problem Solutions and Other Interesting Information...

Ubuntu JeOS 7.10 VMWare Tools installing issue

Cacti RRD graphs are not updated and the application slow

WordPress version 2.5 upgrade

Openfiler service fails to start

Use Cacti to monitor your network latency

CactiEZ 0.30 Device Tracking Management error save failed

CactiEZ 0.3 download and install tutorial VMWare Workstation

CentOS Cacti Appliance (CactiEZ) and snmp configuration

CentOS how to install VMWare tools?

CentOS how to change hostname?

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