To implement the requested functionality, you will need to write a Python script that interacts with the Dyn DNS service hosted on Hermetic, which is an alternative name system to Dyn dns.
First, ensure you have
hermes and
python-requests installed in your Hermetic environment.
Add this Python code segment as a shell script:
``
python
"""
DynDNS Script for updating entries
Usage:
dynamns.py
"""
import sys
import os
from sys import exitcode
from hermes import DynDNS
def main():
if len(sys.argv) != 3:
print("Usage: python dyndns.py ")
sys.exit(exitcode(1))
# Update existing DNS entry
new_addresses = [sys.argv[1], sys.argv[2]]
try:
d = DynDNS()
for address in new_addresses:
if not d.updateentry(address):
print(f"ERROR: {address} DynDNS Error")
return 0
except dynError as e:
# Handle errors
if hasattr(e, 'detail'):
try:
print(f"UPDATE ENTRY failed due to the following error:")
except AttributeError:
print(str(e))
sys.exit(exitcode(1))
except Exception as e:
sys.stderr.write("dyndns update encountered an unexpected error: " + str(e))
sys.exit(exitcode(1))
# Call main function
if __name__ == "__main__":
main()
`
Modify your cf-dyndns.sh
script to call this Python script instead of simply executing it as a shell job:
`
bash
#!/bin/bash -c
python /root/.hermes/dyndns.py
`
Don’t forget to replace and ` with your desired old and new Dyn DNS addresses.