Technology articles
Here is a short guide to creating a RAID 10 array on a PERC 800. In my case, additional drives were added via 2 new MD1200 which were chained onto the existing shelves.
Continue reading “Expanding a Dell PERC H800 RAID array with additional MD1200 shelves”
I recently had to code a REST call to a service I could only access behind a SOCK5 proxy. Unfortunately, the hostname of the service wasn’t publicly resolvable so the DNS had to be resolved on the other side of the proxy. Whilst this is pobbible in cURL itself by using the CURLOPT_PROXYTYPE option and setting it to CURLPROXY_SOCKS5_HOSTNAME or by using the flag –socks5-hostname – the constant isn’t available within PHP. This feature was requested in https://bugs.php.net/bug.php?id=65469 however hasn’t yet been implemented. This can simply be worked around by setting the proxy type to 7. The code below shows an example of doing this using the Httpful library, however if you were using curl natively you’d just use curl_setopt()
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$r = HttpfulRequest::post($url) ->addOnCurlOption(CURLOPT_PROXY, 'localhost:8080') ->addOnCurlOption(CURLOPT_PROXYTYPE, 7) ->send(); |
This was originally 2 years ago with references to the product and vendor. Unfortunately I got threatening legal letters, and almost lost my job! I’ve now stripped out the vendors references and am putting it up simply because I think others will find my methodologies and write up interesting.
There seems to be a lot of confusion in the IRC channel about how to install the guest tools on linux – with a lot of people recommending that you install the tools via the tools installer and the script. I really don’t like to do things this way – as I believe things should be installed using the package manager, and creating .debs of the tools means you don’t need to install a compiler on all of your guests.
Continue reading “Installing VMWare’s ESXi guest tools on Ubuntu 11.10”
I am finally starting to dive into symfony 2 properly. Yes – it’s taken a while, work has taken me in different directions! I found myself needing to create a custom form field type pretty quickly, but couldn’t find much in the way of documentation to do so, so I thought I’ld throw it up here; partly to help others, but mostly to get feedback to make sure I’m not approaching this from the wrong angle.
Continue reading “Creating a custom form field type in symfony 2”
BeBook have announced the addition of a Android tablet PC into their range of eBook readers. The new product is called the BeBook Live.
Here’s a teaser video that BeBook have released, but check out the hands on review of the BeBook Live in the video lower down too.
After my last post, ‘Installing VMware ESXi via PXE’, I found that I needed to do a little customisation of the kickstart script on a per host basis. This post shows how I went about that, with a simple hack to aquire the MAC address and then customise the script based on that. This is a very simple example, but you could modify this easily for your needs. Notice I have two MACs per host below, this is because the machines could PXE over either of their 2 interfaces.
Continue reading “Customising the kickstart script for ESXi automated installs”
We’re going down the route of virtualising our infrastructure at Timico, which means I’m having to get my hands dirty with VMWare. We’ve tried the Xen route, and not really got on with it – so it’s time to move on to something a little more polished.
In this article, I’ll outline how I plan on speeding up the provisioning of new tin to run as VM machines. The plan is to be able to plug in a new node whenever one is needed, and have it fully auto-provisioned from start to end. The first step in doing that is to automate the installation of vmware ESXi – which is done by PXE booting.
I wanted to find a way to make it easier to see when people came online with Bitlbee and Irssi. I already use a split screen with hilightwin.pl so that privmsgs and highlighted messages appear in a window at the top, so I wanted to find a way of using that.
This short guide shows how you can connect emulated routers with physical routers using GNS3 and the Ethernet NIO. This is a cheap method for expanding your home networking lab, and it is amazingly simple. Whilst I’m using Windows, the same method will work with Linux too.
Continue reading “Getting Real with GNS3 – connecting to physical networks”
