Proxmox Backup Client setup

.pbc-config.sh

export PBS_HOST="10.69.4.20"
export PBS_PORT="8007"
export PBS_USERNAME="root@pam"
export PBS_PASSWORD="totallymyrealpassword"
export PBS_DATASTORE="tank"
export PBS_NAMESPACE="backups"

export PBS_FINGERPRINT="fi:ng:er:pr:in:ts:ar:en:ts:ec:re:tb:ut:im:ch:an:gi:ng:it:an:yw:ay"
export PBS_REPOSITORY="${PBS_USERNAME}@${PBS_HOST}:${PBS_PORT}:${PBS_DATASTORE}"

export PXAREXCLUDE="
*
!/.pbc-config.sh

!/etc
!/etc/cron.hourly
!/etc/cron.hourly/pbc-backup

!/usr
!/usr/local
!/usr/local/bin
!/usr/local/bin/**

!/other_files_here
"

README.md

Proxmox Backup Client setup

I have a few hosts that I need to have as bare-metal debian installs for reasons I won't go into. This gistpack is here to remind me and explain to the world how I set up my baremetal hosts to back up to my proxmox backup server.

I create a file in the root of the filesystem, /.pbc-config.sh. This hold all the proxmox backup client env vars, along with the list of files to include in the root backup. The /usr/local/bin/pbc-backup script is the actual worker. /etc/cron.hourly/pbc-backup runs the prior script every hour.

Obviously this is all adjust-as-needed. Hope someone finds this useful!

pbc-backup.cron.hourly

#!/usr/bin/env bash
set -euo pipefail

exec /usr/bin/cronic /usr/local/bin/pbc-backup

pbc-backup.sh

#!/usr/bin/env bash
set -euo pipefail

if [ "$UID" -ne "0" ]; then
  echo "must run as root or in sudo"
  exit 1
fi

if [ "$( stat -c '%a' /.pbc-config.sh )" -ne "600" ]; then
  echo "permissions on /.pbc-config.sh need to be 600"
  exit 1
fi

source /.pbc-config.sh

echo "$PXAREXCLUDE" > /.pxarexclude
echo "created '/.pxarexclude'"

proxmox-backup-client backup --ns="$PBS_NAMESPACE" root.pxar:/ 2>&1

rm -vf /.pxarexclude