Update IP in zone files

The other day I needed to update a IP in a bunch of bind/named DNS zone files. It's a bit more complicated then a "awk" one liner though, because you also need to update the serial number in the SOA recrod!
I did a Google search but didn't find any solutions, so I wrote my own script!

Here it is: update_ip_in_zone_files.js (<--right click to download)

Install

1. Install Node.JS if it's not already on the system: sudo apt update && sudo apt install nodejs
2. Download the script: wget https://www.webtigerteam.com/update_ip_in_zone_files.js
3. Make it executable sudo chmod +x update_ip_in_zone_files.js
4. (Uptional): Edit the script and replace DEFAULT_ZONE_FILE_LOCATION with the path to your zone files.

Running

Run in bash/sh shell: ./update_ip_in_zone_files.js #old-ip# #new-ip# #path-to-zone-files#
Or via node or nodejs: node update_ip_in_zone_files.js #old-ip# #new-ip# #path-to-zone-files#

From a node.js script:
var updateZoneFiles = require("./update_ip_in_zone_files.js"); updateZoneFiles(oldIp, newIp, pathToZoneFiles, function zoneFilesUpdated(err, filesCheckedCounter, filesUpdatedCounter) { // this callback function is optional });

From a bash script:
nodejs ./update_ip_in_zone_files.js $oldIp $newIp $pathToZoneFiles

Don't forget to reload bind/named to trigger notify to dns slave servers!
sudo service bind9 reload #sudo service named reload
(bind is sometimes called named)

GPL License

Feel free to copy this script and make modifications.

Written by Johan Zetterberg Juli 26, 2017.