Add automated UniFi backup to Biff

scripts/backup-to-biff.sh

@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+SOURCE_DIR="/home/urban/docker/unifi/config/data/backup/autobackup"
+## SOURCE_DIR="/home/urban/docker/unifi/config/data/backup"
+REMOTE_HOST="backupserver"
+REMOTE_DIR="/storage/disk3/backup/unifi/daily"
+LOG_TAG="unifi-backup"
+
+log() {
+    printf '%s [%s] %s\n' \
+        "$(date --iso-8601=seconds)" \
+        "$LOG_TAG" \
+        "$*"
+}
+
+if [[ ! -d "$SOURCE_DIR" ]]; then
+    log "Fel: backupkatalogen saknas: $SOURCE_DIR" >&2
+    exit 1
+fi
+
+LATEST_BACKUP="$(
+    find "$SOURCE_DIR" -maxdepth 1 -type f \
+        \( -name '*.unf' -o -name '*.unifi' \) \
+        -printf '%T@ %p\n' |
+    sort -nr |
+    head -n 1 |
+    cut -d' ' -f2-
+)"
+
+if [[ -z "${LATEST_BACKUP:-}" ]]; then
+    log "Fel: hittade ingen UniFi-backup i $SOURCE_DIR" >&2
+    exit 1
+fi
+
+if [[ ! -s "$LATEST_BACKUP" ]]; then
+    log "Fel: backupfilen är tom: $LATEST_BACKUP" >&2
+    exit 1
+fi
+
+TIMESTAMP="$(date '+%Y-%m-%d_%H-%M-%S')"
+BASENAME="$(basename "$LATEST_BACKUP")"
+REMOTE_NAME="${TIMESTAMP}_${BASENAME}"
+
+log "Kopierar $LATEST_BACKUP till ${REMOTE_HOST}:${REMOTE_DIR}/${REMOTE_NAME}"
+
+ssh "$REMOTE_HOST" "mkdir -p '$REMOTE_DIR'"
+
+rsync \
+    --archive \
+    --compress \
+    --partial \
+    --chmod=F600,D700 \
+    "$LATEST_BACKUP" \
+    "${REMOTE_HOST}:${REMOTE_DIR}/${REMOTE_NAME}"
+
+log "Verifierar fjärrfilen"
+
+LOCAL_SIZE="$(stat -c '%s' "$LATEST_BACKUP")"
+REMOTE_SIZE="$(
+    ssh "$REMOTE_HOST" \
+      "stat -c '%s' '$REMOTE_DIR/$REMOTE_NAME'"
+)"
+
+if [[ "$LOCAL_SIZE" != "$REMOTE_SIZE" ]]; then
+    log "Fel: storleken skiljer sig: lokal=$LOCAL_SIZE remote=$REMOTE_SIZE" >&2
+    exit 1
+fi
+
+ssh "$REMOTE_HOST" \
+  "find '$REMOTE_DIR' -maxdepth 1 -type f -mtime +90 -delete"
+log "Backup klar: ${REMOTE_DIR}/${REMOTE_NAME}"