Naturally, the next thing to consider after IPAM is name resolution. Regardless of scale, having some way to locate and identify containers by something other than an IP address becomes a necessity. Much like newer versions of Docker, Weave offers its own DNS service for resolving container names that live on Weave networks. In this recipe, we'll review the default configuration for WeaveDNS as well as show how it's implemented and some relevant configuration settings to get you up and running.
It is assumed that you're building off the lab we created in the first recipe of this chapter. It is also assumed that the hosts have Docker and Weave installed. Docker should be in its default configuration and Weave should be installed with all four hosts successfully peered together, as we did in the first recipe of this chapter.