From f0f9ab7800ac390fb711541d580969d231bced84 Mon Sep 17 00:00:00 2001
From: turtlebasket <turtlebasket@gmail.com>
Date: Sun, 25 Jun 2023 09:25:32 -0700
Subject: [PATCH] backup host + tweaks

---
 README.md        | 38 +++++++++++++++++++++++++++-----------
 backup/README.md | 24 ++++++++++++++++++++++++
 backup/prune.sh  | 15 +++++++++++++++
 3 files changed, 66 insertions(+), 11 deletions(-)
 create mode 100644 backup/README.md
 create mode 100644 backup/prune.sh

diff --git a/README.md b/README.md
index 323e962..24bf9c9 100644
--- a/README.md
+++ b/README.md
@@ -1,18 +1,14 @@
 # Michael's Homelab
 
-## Hosts & Services
+## Hosts 
 
-### Cuddlefish
+| Host | OS   | Services |
+| :--- | :--- | :------- |
+| Cuddlefish | ![CentOS](https://img.shields.io/badge/centos%207-002260?style=for-the-badge&logo=centos&logoColor=F0F0F0) | Gitea |
+| Rocktiplex | ![Rocky Linux](https://img.shields.io/badge/-Rocky%20Linux%209-%2310B981?style=for-the-badge&logo=rockylinux&logoColor=white) | Fathom |
 
-![CentOS](https://img.shields.io/badge/centos%207-002260?style=for-the-badge&logo=centos&logoColor=F0F0F0)
-
-- `git.michaellisano.com`
-
-### Rocktiplex
-
-![Rocky Linux](https://img.shields.io/badge/-Rocky%20Linux%209-%2310B981?style=for-the-badge&logo=rockylinux&logoColor=white)
-
-- `analytics.michaellisano.com`
+<!-- To be created -->
+<!-- | Cloud8 | ![Rocky Linux](https://img.shields.io/badge/-Rocky%20Linux%209-%2310B981?style=for-the-badge&logo=rockylinux&logoColor=white) | NextCloud | -->
 
 ## Dockerized Cloudflared Notes
 
@@ -34,3 +30,23 @@ Then in this case the name of the target service is `gitea-server`, and (per Doc
 https://git.michaellisano.com -> http://gitea-server:3000
 ```
 
+## Backup Decryption Notes
+
+Everything is encrypted with [age](https://github.com/FiloSottile/age).
+
+All keys are generated using age-keygen and stored in a text file, e.g.
+
+**backup-key.txt**
+
+```
+# created: 2023-06-24T18:01:36-07:00
+# public key: age12345...
+AGE-SECRET-KEY-xyz123...
+```
+
+Decrypting a file:
+
+```
+age -d -i backup-key.txt -o NAME.tar.gz NAME.tar.gz.enc
+```
+
diff --git a/backup/README.md b/backup/README.md
new file mode 100644
index 0000000..f22548e
--- /dev/null
+++ b/backup/README.md
@@ -0,0 +1,24 @@
+# Generic Backup Host
+
+## Filenames
+
+Container volume backups are of the format:
+
+```
+gitea-data-2023-06-17_050002.tar.gz.enc
+^          ^                ^
+|          |                Backups are encrypted tarballs
+|          |
+|          ISO Datetime separated by _
+|
+Container volume name (*-data)
+```
+
+## Matching
+
+Regex to match backups that are *not* from the first of every month:
+
+```
+.*-data-\d{4}-\d{2}-([^0][0-9]|[0-9][^1])_.*
+```
+
diff --git a/backup/prune.sh b/backup/prune.sh
new file mode 100644
index 0000000..38c4bca
--- /dev/null
+++ b/backup/prune.sh
@@ -0,0 +1,15 @@
+#!/usr/bin/bash
+
+# Prunes container data folders monthly on backup host
+# - Regex has been tested and works
+# - Script is not yet tested
+
+ARCHIVES=$(ls | grep -E "[0-9A-Za-z]+-data-\d{4}-\d{2}-([^0][0-9]|[0-9][^1])_.*")
+
+for archive in $ARCHIVES; do
+    if [ -d $archive ]; then
+        echo "Removing $archive"
+        rm -f $archive
+    fi
+done
+