Script to make backups inspired from https://nerdyarticles.com/backup-strategy-with-restic-and-healthchecks-io/

restic-backup.sh

#!/bin/bash
set -euo pipefail

# Define variables
RESTIC_BIN="/usr/bin/restic"
RESTIC_PASSWD=".passwd"
BACKUP_SOURCE=(Photos Immich)
BACKUP_REPO="sftp://localhost:2220//backup_path --limit-upload 8545"
WEBHOOK_URL="https://hc-ping.com/<UUID>"
KEEP_OPTIONS=(--keep-daily 7 --keep-weekly 6 --keep-monthly 12 --keep-yearly 99)
RUN_UUID=$(cat /proc/sys/kernel/random/uuid)
CURL_CMD=(curl -fsS -m 10 --retry 5 -o /dev/null -A "$($RESTIC_BIN version)")


# Start ping
"${CURL_CMD[@]}" "$WEBHOOK_URL/start?rid=$RUN_UUID"

# Function to run a command and capture its output
run_command() {
  local CMD=("$@")
  local TMP_FILE
  TMP_FILE=$(mktemp)

  echo "Running: ${CMD[*]}" | tee "$TMP_FILE"

  {
    "${CMD[@]}"
  } > >(tee -a "$TMP_FILE") 2> >(tee -a "$TMP_FILE" >&2)

  local STATUS=${PIPESTATUS[0]}

  if [ "$STATUS" -eq 0 ]; then
    "${CURL_CMD[@]}" --data-binary @"$TMP_FILE" "$WEBHOOK_URL/log?rid=$RUN_UUID" || \
      echo "Warning: failed to send success log" >&2
  else
    "${CURL_CMD[@]}" --data-binary @"$TMP_FILE" "$WEBHOOK_URL/$STATUS?rid=$RUN_UUID" || \
      echo "Warning: failed to send error log" >&2
  fi

  rm -f "$TMP_FILE"
  return "$STATUS"
}

# Run restic commands
run_command "$RESTIC_BIN" -p "$RESTIC_PASSWD" -r "$BACKUP_REPO" unlock || exit $?
run_command "$RESTIC_BIN" -p "$RESTIC_PASSWD" -r "$BACKUP_REPO" backup "${BACKUP_SOURCE[@]}" || exit $?
run_command "$RESTIC_BIN" -p "$RESTIC_PASSWD" -r "$BACKUP_REPO" forget "${KEEP_OPTIONS[@]}" --prune --cleanup-cache || exit $?

# Final success ping
"${CURL_CMD[@]}" "$WEBHOOK_URL?rid=$RUN_UUID"