As was explained earlier, the master mainly serves instructions to agents in the form of catalogs that are compiled from the manifest. You have also prepared a node block for your first agent in the master manifest.
Installing the agent software is easy; you did this at the start of Chapter 1, Writing Your First Manifests. The plain Puppet package that allows you to apply a local manifest contains all the required parts in order to operate a proper agent.
If you are using Puppet Labs packages, use the instructions from earlier in this chapter. On agent machines, you need not install the puppetserver package. Just get puppet-agent instead.
After a successful package installation, one needs to specify where puppet agent can find the puppet server:
root@puppetmaster # puppet config set –-section agent server pup-petmaster.example.net