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Created February 2, 2023 23:36
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  1. @mrpeardotnet mrpeardotnet created this gist Dec 17, 2019.
    36 changes: 36 additions & 0 deletions PVE-host-backup.md
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    # Proxmox PVE Host Config Backup Script

    This script can be used to backup essential configuration files from the Proxmox Virtual Enivronment (PVE) host.

    The script will create backups using `tar` with specified backup prefix and date and time stamp in the file name. Script will also delete backups that are older then number of days specified.

    ## Create backup script file
    To create backup script that will be executed every day we can create backup script in `/etc/cron.daily/` folder. We need to make it writeable by root (creator) only, but readable and executable by everyone:

    touch /etc/cron.daily/pvehost-backup
    chmod 755 /etc/cron.daily/pvehost-backup

    Copy and paste following script into the created file (e.g. using `vim.tiny`):

    #!/bin/sh
    BACKUP_PATH="/var/tmp/"
    BACKUP_FILE="pve-host"
    KEEP_DAYS=7
    PVE_BACKUP_SET="/etc/pve/ /etc/lvm/ /etc/modprobe.d/ /etc/network/interfaces /etc/vzdump.conf /etc/sysctl.conf /etc/resolv.conf /etc/ksmtuned.conf /etc/hosts /etc/hostname /etc/cron* /etc/aliases"
    PVE_CUSTOM_BACKUP_SET="/etc/apcupsd/ /etc/multipath/ /etc/multipath.conf"

    tar -czf $BACKUP_PATH$BACKUP_FILE-$(date +%Y_%m_%d-%H_%M_%S).tar.gz --absolute-names $PVE_BACKUP_SET $PVE_CUSTOM_BACKUP_SET
    find $BACKUP_PATH$BACKUP_FILE-* -mindepth 0 -maxdepth 0 -depth -mtime +$KEEP_DAYS -delete

    Note: Please modify the `PVE_CUSTOM_BACKUP_SET` variable to fit your PVE host needs. You can leave it as empty string (`""`) if no host specific configuration is needed.

    Don't forget to change path where to store backups, the best way is to store backups outside physical host, e.g. on attached NAS storage.

    ## Modify variables
    You can modify variables to fit backups for your individual hosts:

    * `BACKUP_PATH` to specifiy where to store backups,
    * `BACKUP_FILE` to specify backups file prefix,
    * `KEEP_DAYS` to specify how many old backups to keep (in days)
    * `PVE_CUSTOM_BACKUP_SET` to add your installation specific folders and/or files,
    * `PVE_BACKUP_SET` defines standard set of folders and config files for generic PVE host.