azure-dyndns

bash script to operate as DynDNS with Azure-DNS-zone

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Usage and Env

works on debian and ubuntu
tested on raspberry Pi - Raspbian (original goal of that project)

download dyndns.sh and make it executable

chmod +x ./dyndns.sh

Cron it (e.g twice a day or every hour)

sudo crontab -e

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Dependencies

This script require python3, azure-cli, curl, and jq

• python

sudo apt install python3

• azure-cli

following method is used with Raspbian because of no package available in sources repository however on Ubuntu or Debian use sudo apt install azure-cli

  curl https://azurecliprod.blob.core.windows.net/install.py >> installAzureCliPython.py
  sudo chmod +x installAzureCliPython.py
  python3 installAzureCliPython.py
  exec -l $SHELL
  az --version

• curl (if not installed)

sudo apt install curl

• jq (json processor) jq website

sudo apt install jq

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External services

• Azure tenant with existing azureDNSzone
• External echo/mirror ip service In order to get current ip address you need a echo/miror ip service
  you can use third party service as the excellent ifconfig.co
  or use you own based on works already present on GitHub.
  Use Greenstatic/echo-ip deved in Go that fits very well with a microk8s deploy. \

Greenstatic/echo-ip is a good tool for docker/k8s env because it's able to recover X-Forwarded source ip through proxy/ingress.