Final assembly

After finishing the casing the time had finally come to assemble the cluster. The first step was to fit the aluminium tubes that would act as stands for the RPI’s. I also used a small piece of tubing for all the cable holes just to give me a unified look.

Brass balls act as legs
Brass balls act as legs
All tubing in place
All tubing in place

The little 10 mm brass ball-shaped nuts act as legs. Later on I will use those too on top of the RPI’s. Again, for the look 🙂

The next step was fitting the switch and hub in the casing. I already knew this was going to be a pretty tight fit…

What a mess!
What a mess!

With all those cables sticking out I did not really know where to start.. But I worked myself carefully through all cables and ended up with this:

Pretty neat hey!
Pretty neat hey!

I think it worked out very, very well! In order to give the hub and switch a bit more cooling, I decided not to install the bottom plate. With the cables being tucked in so neatly this was not necessary after all.

I used some USB plugs that could be mounted without soldering which worked out perfectly. I made a fifth lead that feeds the switch so now only 2 cables go into the cluster. Again, I “borrowed” heavily from this blog post.

Last step was mounting the Raspberry Pi’s on top of the casing.It took some fiddling but it all came together pretty much as I had in my head. Below the pictures of the finished cluster.

The finished cluster front view
The finished cluster front view
Top view
Top view, less cables visible would hardly be possible…
Rear view, looks a bit odd without the bottom
Rear view, looks a bit odd without the bottom

 

Left hand side top view
Left hand side top view, again with the brass balls for a uniform look
Right hand side view
Right hand side view
Left hand side view
Left hand side view, just visible is the ribbon cable that feeds the i2c backpack of the display

The last thing to was put the cluster on my desk, plug in the power and network cable and power the whole thing up… And YES, it works!!

The working cluster on my desk
The working cluster on my desk

Now all that is left to do is getting Hadoop, Hive etc. installed and working…

 

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s