Technitium DNS with failover over dns02

hosts/dns/dhcp-failover.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -euo pipefail
+src_dns_server=192.168.1.2
+# DHCP scopes to manage - put the name of each scope you have
+dhcp_scopes=("local-home")  # Use this array for one or many scopes
+
+echo "Checking primary Technitium server status"
+status_code=$(curl --write-out '%{http_code}' --silent --output /dev/null http://$src_dns_server:5380)
+
+if [[ "$status_code" -ne 200 ]]; then
+  echo "Primary DNS/DHCP server is not available. Enabling DHCP on the secondary server."
+  action="enable"
+else
+  echo "Primary DNS/DHCP server is available. Disabling DHCP on the secondary server."
+  action="disable"
+fi
+
+for scope in "${dhcp_scopes[@]}"; do
+  echo "Executing API call to $action DHCP scope: $scope"
+  response=$(curl -X POST "http://localhost:5380/api/dhcp/scopes/$action?token=$DNS1_API&name=$scope" \
+    --silent --write-out "%{http_code}")
+
+  echo "HTTP response code: $response"
+  if [[ "$response" == "200" ]]; then
+    echo "Successfully $action DHCP for scope: $scope"
+  else
+    echo "Failed to $action DHCP for scope: $scope. Check the response body for details."
+  fi
+done