Mastering Proxmox - Third Edition

The exclude-path option

To exclude certain folders from backing up, use the exclude-path option. All paths must be entered on one line, without breaks. Keep in mind that this option is only for LXC containers:

exclude-path: "/log/.+" "/var/cache/.+"  

The previous example will exclude all the files and directories under /log and /var/cache. To manually exclude other directories from being backed up, simply use the following format:

exclude-path: "/<directory_tree>/.+"