In this chapter, we looked at the location of important configuration files needed to run a healthy Proxmox cluster. We also looked through the configuration files from inside to have a better understanding at the parameters used and other possible values for different parameters. As mentioned earlier, most of these configuration files can be changed via a Proxmox GUI. But when the GUI becomes inaccessible for any reason, knowing where these files are located can save a tremendous amount of time by accessing them through CLI.

In the next chapter, we will look at the exciting options of shared storage system, VM image formats used by Proxmox, commercial/noncommercial shared storage options, and set up an advanced shared storage using FreeNAS.