Summary
In this chapter, we built upon the foundations laid down in the previous chapter to gain more understanding about the concepts of networking and how they are applied to a cluster of Raspberry Pis.
Specifically, we learned how to set up a DHCP server on a Raspberry Pi and learned the mechanics of how IP addresses are allocated to different clients. We also observed the exact procedure of how the allocation takes place.
As a next step, we set up a DNS server, too, that works with the DHCP server and assigns names to the IP addresses so that the nodes are easily accessible. Using the same methodology, we learned how to assign a name for a Raspberry Pi-based web server so that we can open websites on our own network.
Finally, we learned about a tool that helps us discover active nodes on the network so that we do not have to face the inconvenience of assigning computations to a non-active node that could potentially crash a program or wrong computations.
