add borgmatic configuration

borgmatic/config/opt.yaml

@@ -0,0 +1,42 @@
+location:
+    source_directories:
+        - /shuttle/opt
+    patterns:
+        - '- /shuttle/opt/.snapshot'
+        - '- /shuttle/opt/jupyter/conda'
+        - '- /shuttle/opt/emby/metadata'
+        - '- /shuttle/opt/btsync/var/*.journal*'
+        - '- /shuttle/opt/openvpn-server/*.log'
+    repositories:
+        - /repo/opt
+storage:
+    compression: lz4
+    archive_name_format: '{now:%Y-%m-%d}'
+
+retention:
+    keep_daily: 7
+    keep_weekly: 4
+    keep_monthly: 6
+    prefix: '20'
+
+consistency:
+    checks:
+        - repository
+        - archives
+    check_last: 3
+    prefix: '20'
+
+hooks:
+    before_backup:
+        - echo -e "\n\n"
+        - echo "#"
+        - echo "# `date` - Starting a backup job."
+        - echo "#"
+    after_backup:
+        - echo "#"
+        - echo "# `date` - Backup created."
+        - echo "#"
+    on_error:
+        - echo "#"
+        - echo "# `date` - Error while creating a backup."
+        - echo "#"