feat: initial release of pve-rsync-backup script

- Added PVE vzdump log parsing with awk
- Implemented rsync transfer with filelist generation
- Added safety triggers for remote cleanup
- Added dependency and SSH key validation"

pve-rsync-backup.conf.example

@@ -0,0 +1,25 @@
+# --- Email Settings ---
+SUPPORT_EMAIL='support-mail@your.domain'
+
+# --- System & Logging ---
+SYSLOG_TAG="host_backup"                        # Tag for syslog entries related to the backup process (used in system logs for easier identification)
+SERVER_NAME="pve-backup-server"                 # Unique identifier as hostname for the backup server (used in logs and notifications)
+LOG_RETENTION_DAYS=14                           # Number of days to keep log files (adjust as needed)
+
+# --- Authentication & Paths ---
+BACKUP_SSH_USER='ssh_backup_user_here'          # SSH user for remote server authentication (must have appropriate permissions on the remote server)
+BACKUP_SSH_USER_KEY="/home/${BACKUP_SSH_USER}/.ssh/id_rsa"  # Path to the private SSH key for authentication
+RSYNC_PASS_FILE="/backups/rsync_vm.passwd"      # Local file containing the password for rsync authentication (if using rsync daemon)
+TMP_LOGFILE="./pve-rsync-backup.log"            # Temporary log file for rsync output
+BACKUP_RSYNC_USER="backup"                      # Secure username for rsync (defined in the /etc/rsyncd.conf on the remote server)
+BACKUP_RSYNC_MODULE="root"                      # Secure module name for rsync (defined in the /etc/rsyncd.conf on the remote server)
+
+# --- Storage Settings ---
+BASE_BACKUP_DIR="/backups"                      # Base directory for storing backups (ensure this has enough space and proper permissions), may be a mount point (as an external drive)
+
+# Remote PVE paths (can be changed for different systems)
+PVE_DUMP_DIR="/storage/dump"                    # Directory on the Proxmox VE server where VM dumps are stored (must be accessible by the backup user)
+PVE_CONF_DIR="/etc/pve/nodes"                   # Directory on the Proxmox VE server where VM configuration files are stored (must be accessible by the backup user)
+
+# Allowed nodes (optional if you want to limit the list), as a hostname of PVE node
+ALLOWED_NODES=("node-a" "node-b")               # List of allowed Proxmox VE nodes to backup