implemented new remote backup solution

roles/native-pull-remote-backups/files/pull-remote-backup.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+# @param $1 hostname from which backup should be pulled
+source_host="backup@$1"
+source_machine_id="$( (ssh "$source_host" sha256sum /etc/machine-id) | head -c 64)"
+source_path="/Backups/$source_machine_id/"
+directories="$(ssh "$source_host" find "$source_path" -maxdepth 1 -type d)"
+for folder in $directories; do
+  if [ "$folder" != "$source_path" ]; then
+    diff_path="$folder/diffs/$(date '+%Y%m%d%H%M%S')/"
+    latest_path="$folder/latest/"
+    remote_source_path="$source_host:$latest_path"
+    log_path="$folder/log.txt"
+    mkdir -vp "$latest_path"
+    mkdir -vp "$diff_path"
+    rsync -abvv --delete --delete-excluded --rsync-path="sudo rsync" --log-file="$log_path" --backup-dir="$diff_path" "$remote_source_path" "$latest_path" || exit 1
+  fi
+done