Description:

This project is a comprehensive solution for automating the backup of Proxmox containers (CTs) and virtual machines (VMs). The script performs the following tasks:

• Creates snapshot backups of all CTs and VMs using vzdump.
• Compresses backups with zstd for efficient storage.
• Automatically uploads the backups to a designated FTP server.
• Lists the contents of the FTP directory post-upload and logs the results in /opt/ftp_history.txt.
• Deletes backups older than 7 days from the FTP server to maintain storage efficiency.
• Cleans up the backup history file every 30 days to avoid clutter.
• Sends email notifications in case of any errors during backup or cleanup.

This tool is designed for Proxmox administrators who need a reliable and automated backup strategy with minimal manual intervention.