Adding agentless Windows WMI monitoring to Nagios

There are a couple of well documented methods to monitor Windows machines from Nagios. The most popular of these seems to be NRPE. This method works very well, but the biggest downside for me was the need to install a client on every machine that needed to be monitored. WMI seemed to be the best … Continue reading Adding agentless Windows WMI monitoring to Nagios

Bash scripting: another use for “DD”

For most linux users, "dd" is mostly used when dealing with disk issues, such as copying one disk to another (byte for byte) creating an ISO from a CD/DVD, and so on. I personally didnt know what else I would use dd for until I ran across a particular need.... I needed my linux script … Continue reading Bash scripting: another use for “DD”

Lessons Learned: Redhat 5.8 + IBM Bladecenter 88524TG + IBM Storwise V7000

Objective: Having a baremetal install of Redhat Enterprise on a blade within the IBM Bladecenter, configure the OS to successfully mount a LUN on the SAN (Storwise v7000) as usable storage. Hardware: - Blades: IBM Bladecenter 88524TG - SAN storage: FiberChannel Storwise V7000 - HBAs: Qlogic Method: I assume all cabling and SAN zoning has already … Continue reading Lessons Learned: Redhat 5.8 + IBM Bladecenter 88524TG + IBM Storwise V7000

Bringing IPv6 to the home : Part 2

The article is a more in-depth look at residential IPv6, the final installment of the 2 part series. If you've missed it, the 1st article can be found here. After having established a successful connection to an IPv6 broker server, I fired up wireshark to see what is going on over the wire. We immediately … Continue reading Bringing IPv6 to the home : Part 2

Bringing IPv6 to the home : Part 1

World IPv6 day came and went, but for most of us nothing much changed. In Malta especially, there currently seems no interest for ISPs to start using IPV6, very probably due to the challenges it poses. So I went on a mission to bring IPv6 connectivity to my home network (FYI, there are already some … Continue reading Bringing IPv6 to the home : Part 1

Entertainment: Asus O’play file share w/ Windows 7

A bit of a different post from the norm since this deals with IT in entertainment rather than the normal work IT, but seems to be a useful. @ Home I do not use any cable, TV or satellite description. Instead I prefer to rely on digital media centers. In fact I’ve gone through my … Continue reading Entertainment: Asus O’play file share w/ Windows 7

Creating a custom Nagios/Centreon passive alerter

Scenario: This is very probably a familiar problem that any sysadmin must solve: Using your monitoring setup to receive alerts from other servers. Note the highlighted "receive". This is different from the standard poll / check that come out of the box with Nagios. Say for example, you would like to receive an alert whenever … Continue reading Creating a custom Nagios/Centreon passive alerter