Nginx Proxy Manager - Domain Check Script

This is a Python script that use a domain to update the IP address in the NPM access-list.

scripts/npm_domain_check.py

Follow the steps below and run the script. A new column called domain will be added to the database and a file called npm_domain_check.json will be created in the same path where the script is located. Ensure you are created the access-list first in NPM with ip and a network /32 that you wand change dynamically, then add a domain to an IP address in the json file:

// Example
{
  "74.125.29.139": "google.com",
  "140.82.121.4": "github.com"
}

---

If you want to use the script, follow these steps:

1. Use a container_name in docker-compose or run command:

services:
  app:
    container_name: npm # For example

2. Copy npm_domain_check.py script to /usr/local/bin/npm_domain_check.py in your docker-machine

Note: not into container!

sudo curl -o "/usr/local/bin/npm_domain_check.py" "https://raw.githubusercontent.com/AmaneSwiss/NPM-DomainCheckScript/refs/heads/main/scripts/npm_domain_check.py"
sudo chmod +x /usr/local/bin/npm_domain_check.py

3. Change line 10 in npm_domain_check.py from CONTAINER_NAME to container_name from step 1

Note: use nano for example

# Your 'Nginx Proxy Manager' container name here
CONTAINER_NAME = "npm" # <- Change here

4. Add a cron job to run the script continuously sudo crontab -e for edit the root cron table an add:

# NPM domain-check
* * * * * /usr/local/bin/npm_domain_check.py

This will run the script every minute. You can change * * * * * to */5 * * * * to run it every 5 minutes for example.

Help for cronjobs can you find here

---

To undo, follow these steps:

1. Remove the cron job with sudo crontab -e and delete the added lines.

# NPM domain-check # <- remove
* * * * * /usr/local/bin/npm_domain_check.py # <- remove

2. Remove the script and config file

rm -f /usr/local/bin/npm_domain_check*

3. Remove the created domain column using a Python script as well:

scripts/remove_domain_column.py

sudo curl -o "/tmp/remove_domain_column.py" "https://raw.githubusercontent.com/AmaneSwiss/NPM-DomainCheckScript/refs/heads/main/scripts/remove_domain_column.py"
sudo chmod +x /tmp/remove_domain_column.py

4. Change line 7 in remove_domain_column.py from CONTAINER_NAME to container_name

# Your 'Nginx Proxy Manager' container name here
CONTAINER_NAME = "npm" # <- Change here

5. Run script

/tmp/remove_domain_column.py