Author Archive

Cisco UCS 2.0 software available for download


21 Sep

Couple days ago Cisco has relesed version 2.0 of software/firmware for UCS.

Arduino will go ARM by the end of the year


20 Sep

Good news to Arduino fans.
Arduino announced  3 new products Leonardo, Due and WiFi shield.
The biggest news probably is Arduino Due which will use SAM3U processor from Atmel.
Also Arduino 1.0 is on the way.
More details here.

UCS: Using Cisco UCS Emulator


28 Aug

Cisco Unified Computing System(UCS) is quite new compared to well know server providers like HP, Dell, IBM but during a short period of time it achieved quite a lot.
For anyone who wants to see what UCS is or just simply try out, Cisco has released UCS Emulator.
UCS emulator is pretty powerful tool it allows users to emulate UCS environment. So you can add your chassis, servers, CPUs, RAM, PSUs etc. The other interesting feature is that it allows to import hardware configuration from a live environment. It cannot import everything but is pretty close.
This post will show you how setup and use UCS emulator.
Before you start you’ll need to download UCS emulator also you need to install VMware Player or Workstation on your computer.
http://developer.cisco.com/web/unifiedcomputing/ucsemulatordownload download 7z file (you’ll need Cisco login to download it, just register). The emulator requires 1GB of RAM dedicated to the VM so make sure you have enough memory.
http://www.vmware.com/go/downloadplayer (again you need to login to download)

Extract the files from 7z archive to a new folder.
Install VMware player/Workstation this will require a reboot.
(more…)

This blog is not dead…


18 Aug

Hi everyone,
It’s been a while since I posted here and this was mainly because of two reason. First I was on holidays and second I’ve changed my job. So I loads of things going on and simply had not time to look after blog.
This should change in the coming weeks as I will start bloging again. As my job roles has changed the things that I write about will also change, mainly because I’ve moved from Microsoft products to cloud computing. So expect more posts about virtualization.

Windows does not have enough information to verify this certificate.


27 Jun

Here come SSL certificates again. In recent Operating Systems Microsoft made some changes in Root certificates by removing some of them. Probably the best way to illustrate this is try to install Java on Server 2008 R2. When you try to install it you’ll get the following error:
Error 1330. A file that is required cannot be installed because the cabinet file Data1.cab has an invalid digital signature. This may indicate that the cabinet file is corrupt.

(more…)

LED stair lighting based on Arduino, Part 7


12 Jun

I’m closing of this project as I think that with the current configuration I will not be able to achieve what I want.
By closing this project I will kick of a new one(Version 2) which would be a bit more complicated from the hardware and programming point but at least it will give me more freedom. The new version of arduino automatic stairs is already being developed and I will post a new post soon(watch this space). For those of you who are still interested in this project here is a draft code: (more…)

Today is World IPv6 Day


08 Jun

IPv6 been with us for a while now but it have not been widely adopted yet. So hopefully World IPv6 Day will start ball rolling http://www.worldipv6day.org

Netdiag Failed (DNS test, Redir and Browser test, DC list test, Kerberos test)


27 May

Although Windows Server 2003 has been with us a while I can across this issue recently. This only because most of the 2003 domain controller installations I had seen were 32bit. But recently I found a domain that had a mixture of 32bit and 64bit domain controllers.

You run netdiag on your Windows 2003 64bit domain controller and get many failures like the ones bellow:

DNS test . . . . . . . . . . . . . : Failed
[FATAL] Could not open file C:\WINDOWS\system32\config\netlogon.dns for reading.
[FATAL] No DNS servers have the DNS records for this DC registered.

Redir and Browser test . . . . . . : Failed
List of NetBt transports currently bound to the Redir

(more…)

Arduino controlled dishwasher


26 May

Another good application of Arduino. Arduino controlled dishwasher

IIS Admin service would not start with error -2146893809


25 May

In the event viewer you should see error with Event ID 7024.
The IIS Admin Service service terminated with service-specific error %%-2146893809.

Here is a possible fix. For the service to start it needs RSA MachineKey and access to it. The Key is stored in C:\Users\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys(for Server 2008)  you should see some files in that location with the size of 2 or 3 Kbytes. Look for the file name that starts with ‘C23’. This is the key that is used by Microsoft Internet Information Server. Check the permissions on that key and make sure that ‘System’ and ‘Administrators’ have full control on this key. Once the permissions are set try starting IIS Admin service.

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