Backup Reverse Proxy Site Configs to BS

I like to keep copies of things in various other places, and I like historical records of things. My installation here is what I primarily use as a notebook, blog, and general how-to because I CRS on a regular basis. I figured why not use the power of some bash scripting to run on a schedule to look at things, and then use BS API to add stuff here as a backup? Sure, my PM is backed up regularly, but quick views, edits, opening BS is much faster.

Concept

Use BS API in a bash script to back up the file contents of my NGINX reverse proxy container's /etc/sites-available/ files to a specific book

Features

Each container = Chapter in the designated NRP Book
Each backup = versioned page, named after the site config file's name
Each page includes
- DTG of backup
- Container Name
- Container ID
- Container IP
- Version Number
- SHA256 Hash
Script will run bi-weekly or on demand (PRN), backs up the configs only if the file changed
Automatically creates the chapter if missing

The script will create a hash of each site config to help track changes. Initial run will upload everything in the directory, then subsequent runs of the script will generate a new hash, and compare - changes detected, upload the new version. Previous hashes per container will be stored for reference.

Script

Script is loaded and run from the NGINX reverse proxy container: /directory/goes/here

CRON schedule:

#!/bin/bash

# Config
BOOKSTACK_URL="https://rtfm.skynet2.net/api"
BOOK_ID=REPLACE_WITH_BOOK_ID
TOKEN_ID="REPLACE_WITH_YOUR_TOKEN_ID"
TOKEN_SECRET="REPLACE_WITH_YOUR_TOKEN_SECRET"
CONFIG_DIR="/etc/nginx/sites-available"
HASH_DIR="$HOME/.nginx-backup-tracker"

# Mapping container names to IDs
declare -A container_ids=(
  [container1name]=100
  [container2name]=101
  [container3name]=102
  # add all your containers!
)

mkdir -p "$HASH_DIR"

for conf_file in "$CONFIG_DIR"/*.conf; do
  name=$(basename "$conf_file" .conf)
  id=${container_ids[$name]:-UNKNOWN}
  ip="192.168.0.${id}"
  [[ "$id" == "UNKNOWN" ]] && echo "⚠️ Unknown container ID for $name" && continue

  hash_file="$HASH_DIR/$name.sha256"
  file_hash=$(sha256sum "$conf_file" | awk '{print $1}')

  if [[ -f "$hash_file" && "$file_hash" == "$(cat "$hash_file")" ]]; then
    echo "No changes for $name"
    continue
  fi

  echo "$file_hash" > "$hash_file"
  dtg=$(date -u "+%d %b %y %H%MZ" | tr 'a-z' 'A-Z')
  version=$(ls "$HASH_DIR/$name"_v*.sha256 2>/dev/null | wc -l)
  version=$((version + 1))
  version_file="$HASH_DIR/${name}_v${version}.sha256"
  cp "$conf_file" "$version_file"

  content=$(<"$conf_file")
  encoded_content=$(echo "$content" | sed 's/&/\&amp;/g; s/</\&lt;/g; s/>/\&gt;/g')

  page_html="<table class=\"align-center\" style=\"border-collapse: collapse; border-width: 0px; border-style: none; width: 100%;\" border=\"1\">
<colgroup>
<col style=\"width: 22.0487%;\"><col style=\"width: 22.7638%;\"><col style=\"width: 20.5049%;\"><col style=\"width: 17.1567%;\"><col style=\"width: 17.639%;\"></colgroup>
<tbody>
<tr><td><span style=\"color: rgb(53, 152, 219);\"><strong>DTG OF IMPORT</strong></span></td><td><span style=\"color: rgb(53, 152, 219);\"><strong>CONTAINER NAME</strong></span></td><td><span style=\"color: rgb(53, 152, 219);\"><strong>CONTAINER ID</strong></span></td><td><span style=\"color: rgb(53, 152, 219);\"><strong>IP</strong></span></td><td><span style=\"color: rgb(53, 152, 219);\"><strong>VERSION OF FILE</strong></span></td></tr>
<tr><td>$dtg</td><td>$name</td><td>$id</td><td>$ip</td><td>$version</td></tr>
<tr><td colspan=\"5\"><span style=\"color: rgb(53, 152, 219);\"><strong>SHA256 HASH VALUE</strong></span></td></tr>
<tr><td colspan=\"5\">$file_hash</td></tr>
</tbody></table>
<pre><code class=\"language-nginx\">$encoded_content</code></pre>"

  # Create chapter (if needed)
  chapter_resp=$(curl -s -X POST "$BOOKSTACK_URL/chapters" \
    -H "Authorization: Token $TOKEN_ID:$TOKEN_SECRET" \
    -H "Content-Type: application/json" \
    -d "{\"book_id\": \"$BOOK_ID\", \"name\": \"$name\"}")

  chapter_id=$(echo "$chapter_resp" | grep -o '"id":[0-9]*' | head -1 | cut -d ':' -f2)

  page_title="Site Config Version $version - $dtg"

  curl -s -X POST "$BOOKSTACK_URL/pages" \
    -H "Authorization: Token $TOKEN_ID:$TOKEN_SECRET" \
    -H "Content-Type: application/json" \
    -d "{\"book_id\": \"$BOOK_ID\", \"chapter_id\": $chapter_id, \"name\": \"$page_title\", \"html\": \"$page_html\"}"

  echo "✅ Uploaded new config version for $name"
done

Dry Run

This script will do a dry run to check everything before going live!

BOOK_ID=30
CONFIG_DIR="/etc/nginx/sites-available"
HASH_DIR="$HOME/.nginx-backup-tracker"

# Mapping container names to IDs
declare -A container_ids=(
  [container100name]=100
  [container101name]=101
  [container102name]=102
  # Update your container map!
)

mkdir -p "$HASH_DIR"
echo "\n ^=^t^m Starting dry run for Nginx site config backup..."

for conf_file in "$CONFIG_DIR"/*; do
  name=$(basename "$conf_file" .conf)
  id=${container_ids[$name]:-UNKNOWN}
  ip="192.168.0.${id}"
  [[ "$id" == "UNKNOWN" ]] && echo " ^z   ^o  Unknown container ID for $name (file: $conf_file)" && continue

  hash_file="$HASH_DIR/$name.sha256"
  file_hash=$(sha256sum "$conf_file" | awk '{print $1}')

  dtg=$(date -u "+%d %b %y %H%MZ" | tr 'a-z' 'A-Z')
  version=$(ls "$HASH_DIR/${name}"_v*.sha256 2>/dev/null | wc -l)
  version=$((version + 1))

  if [[ -f "$hash_file" && "$file_hash" == "$(cat "$hash_file")" ]]; then
    echo " ^=^=  [$name] No changes since last backup (hash unchanged)"
    continue
  fi

  echo "\n ^=^z  Change detected for: $name"
  echo "    ^~  DTG: $dtg"
  echo "    ^~  Container ID: $id"
  echo "    ^~  IP Address: $ip"
  echo "    ^~  Version #: $version"
  echo "    ^~  SHA256: $file_hash"
  echo "    ^~  Would create chapter: $name (if missing)"


root@NginxProxy:~# cat nginx_backup_dry_run.sh
#!/bin/bash

BOOK_ID=30
CONFIG_DIR="/etc/nginx/sites-available"
HASH_DIR="$HOME/.nginx-backup-tracker"

# Mapping container names to IDs
declare -A container_ids=(
  [container100name]=100
  [container101name]=101
  [container102name]=102
  # Update your container map!
)

mkdir -p "$HASH_DIR"
echo "🔍 Starting dry run for Nginx site config backup..."

for conf_file in "$CONFIG_DIR"/*; do
  name=$(basename "$conf_file" .conf)
  id=${container_ids[$name]:-UNKNOWN}
  ip="192.168.0.${id}"
  [[ "$id" == "UNKNOWN" ]] && echo "⚠️  Unknown container ID for $name (file: $conf_file)" && continue

  hash_file="$HASH_DIR/$name.sha256"
  file_hash=$(sha256sum "$conf_file" | awk '{print $1}')

  dtg=$(date -u "+%d %b %y %H%MZ" | tr 'a-z' 'A-Z')
  version=$(ls "$HASH_DIR/${name}"_v*.sha256 2>/dev/null | wc -l)
  version=$((version + 1))

  if [[ -f "$hash_file" && "$file_hash" == "$(cat "$hash_file")" ]]; then
    echo "🟢 [$name] No changes since last backup (hash unchanged)"
    continue
  fi

  echo "  🚨 Change detected for: $name"
  echo "   ➤ DTG: $dtg"
  echo "   ➤ Container ID: $id"
  echo "   ➤ IP Address: $ip"
  echo "   ➤ Version #: $version"
  echo "   ➤ SHA256: $file_hash"
  echo "   ➤ Would create chapter: $name (if missing)"
  echo "   ➤ Would create page: Site Config Version $version - $dtg"

  echo "   ➤ First 10 lines of config:"
  head -n 10 "$conf_file" | sed 's/^/     | /'
done

echo "✅ Dry run complete. No changes made to BookStack."