|=======
|corosync.conf |corosync cluster configuration file (previous to {pve} 4.x this file was called cluster.conf)
|storage.cfg |{pve} storage configuration
+|datacenter.cfg |{pve} datacenter wide configuration (keyboard layout, proxy, ...)
|user.cfg |{pve} access control configuration (users/groups/...)
|domains.cfg |{pve} Authentication domains
|authkey.pub | public key used by ticket system