Sysadmin and cooking recipes

June 23, 2017
by davide

IPMI management on SuperMicro server (running ProxMox)

This tutorial should only used for server based on SuperMicro motherboard

You need first to install ipmitool package

and load the kernel module manually

You should now see a new device under /dev

Now get some information about the BMC chipset

You’ll find useful resources here

May 30, 2017
by davide

Using dia on OS X

For those who tried to run Dia on their MacBook, iMac, etc.

You should have notice that Dia simply doesn’t work, that’s what I saw when I’ve tried to use it 😉

Please find below a quick fix to run it

Quick solution

Simply run Dia using the terminal as below

Enjoy !

Inspired by http://navkirats.blogspot.ch/2014/10/dia-diagram-mac-osx-yosemite-fix-i-use.html

May 2, 2017
by davide

Tunneling VNC over ssh from OSX

For those who needs to use VNC / ssh, here’s below a link to good article from Apple forum

Basically, the command you need to run from your OS X system is as below

Let’s explain each parameters and options of this command (from ssh man page on OS X)

So for example, you can run this

Then you can start your VNC client and connect to the vnc server

Hope it helps 🙂


April 17, 2016
by davide

FreeBSD: Fetching metadata signature failed while upgrading from 10.1 to 10.2


Trying to update my *BSD from 10.1 to 10.2 using FreeBSD documentation,, I ran the command below

I get the error below

Fetching metadata signature for 10.2-RELEAS from update6.freebsd.org… failed.

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April 9, 2015
by davide

Managing VmWare tools service on Centos 6

What ?

Looking at the vSphere console on a Centos 6 guest, you’ll see that the VmWare agent is installed but not running.

Why ?

The script which control the vmware agent “service”  for Centos version 6 is not in the right location.
It should be in

but here’s the script location

How to fix it ?

So how to fix the problem ? Simple as described below

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