BIP KB:
List of Proxmox important configuration files directory

There are many times when we need to find the path to certain configuration files for Proxmox LXC or KVM or OpenVZ. It takes time to constantly keep looking them up or remember them so here are all the important path for anyone who needs it when dealing with Proxmox!

OpenVZ

 
config: /etc/vz/conf/xxx.conf
data: /var/lib/vz/root/xxx
template: /var/lib/vz/template/cache
snapshot: /var/lib/vz/dump
OpenVZ config: /etc/vz/vz.conf

KVM

  
config: /etc/pve/qemu-server/xxx.conf
data: /var/lib/vz/images/xxx
template: /var/lib/vz/template/iso
snapshot: /var/lib/vz/dump

LXC

config: /var/lib/lxc/xxx/config
data: /var/lib/vz/images/xxx
template: /var/lib/vz/template/cache
snapshot: /var/lib/vz/dump

PROXMOX Cluster

config: /etc/pve/cluster.conf
nodes vm config: /etc/pve/nodes/xxx/xxx/qemu-server/xxx.conf

Files

 corosync.conf  => corosync/cman cluster configuration file (previous to PVE 4.x this file was called cluster.conf)
 storage.cfg   => PVE storage configuration
 user.cfg      => PVE access control configuration (users/groups/...)
 domains.cfg   => PVE Authentication domains 
 authkey.pub   => public key used by ticket system
 
 priv/shadow.cfg  => shadow password file
 priv/authkey.key => private key used by ticket system
 
 nodes/${NAME}/pve-ssl.pem                 => public ssl key for web server
 nodes/${NAME}/priv/pve-ssl.key            => private ssl key
 nodes/${NAME}/qemu-server/${VMID}.conf    => VM configuration data for KVM VMs
 nodes/${NAME}/openvz/${VMID}.conf         => VM configuratin data for OpenVZ containers

Symbolic links

local => nodes/${LOCALNAME}
qemu-server => nodes/${LOCALNAME}/qemu-server/
openvz => nodes/${LOCALNAME}/openvz/

Special status files for debugging (JSON)

.version    => file versions (to detect file modifications)
.members    => Info about cluster members
.vmlist     => List of all VMs
.clusterlog => Cluster log (last 50 entries)
.rrd        => RRD data (most recent entries)

Enable/Disable debugging

 # enable verbose syslog messages
 echo "1" >/etc/pve/.debug 
 
 # disable verbose syslog messages
 echo "0" >/etc/pve/.debug 

If there are any we missed please add them below in the comments form.