Setting up My Raspberry Pi Cluster
I posted earlier about setting up my first Raspberry Pi. This was a trial run for setting up a small cluster of five raspberry pis. To make life simple, I used the same steps to get berryboot and an OS on the other 4. This took a bit longer than some options, but with only 5 boxes wasn't too much work.
Next I wanted to set host names for the cluster so that I could find them. My plan was to name the pis, rpi0 - rpi4. I found this useful tutorial. To summarize the steps.
-
Edit the
/etc/hostname
file, replacing the default nameraspberry
with the new namerpi0
.rpi0
-
Edit the
/etc/hosts
file, replacing the default nameraspberry
with the new namerpi0
.127.0.0.1 localhost ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters 127.0.1.1 rpi0
-
Reboot.
> sudo reboot
I followed these steps on my first box, and got the name to be rpi0
. But I still wasn't able to connect from my laptop since I don't have a DNS server running on my LAN. After some Googling I found this article on setting up bonjour/zeroconf on the pi. Basically this involved making sure the pi was up to date and installing a single package:
> sudo apt-get update
> sudo apt-get install libnss-mdns
Once that was installed, I could access my first pi using rpi0.local
.
> ping rpi0.local
PING rpi0.local (192.168.1.169): 56 data bytes
64 bytes from 192.168.1.169: icmp_seq=0 ttl=64 time=54.703 ms
64 bytes from 192.168.1.169: icmp_seq=1 ttl=64 time=64.260 ms
This also meant that I can ssh to the box using ssh [email protected]
, which is really nice.
Using this info for the other 4 pis, I got them booting, ssh'd and:
> sudo apt-get update
> sudo apt-get upgrade
> sudo apt-get install git-core vim python-dev python-setuptools libnss-mdns
Then setup the host names. A few minutes later the cluster is up and running as rpi0, rpi1, rpi2, rpi3 and rpi4.
Hopefully in the next post I can do something more interesting ;-)