Generating a Cloudflare API token

• Log in to Cloudflare
• API Tokens section:
  Profile/Username picture (top right) --> My Profile --> API Tokens tab
• Create a new token
  Create Token --> Edit zone DNS -->
  Permissions (default): Zone / DNS / edit
  Include / Specific zone / select zone
  Optional: Client IP Address Filtering (recommended if possible)
  TTL: Now --> When you want it to end (2 years perhaps)
• Capture the secret DNS API token

cloudflare-dns-update

https://github.com/socketry/cloudflare-dns-update

Use rbenv to install a ruby environment then follow steps like this:

git clone git@github.com:socketry/cloudflare-dns-update.git
cd cloudflare-dns-update
bundle
bin/cloudflare-dns-update
# walk through initial setup wizard

Once done you

• run cloudflare-dns-update to trigger initial setup wizard that gets a token and has you select target DNS entry to update.
• run cloudflare-dns-update again to verify it runs without wizard prompts or errors.
• Add cloudflare-dns-update to your onboot.sh script.

  #!/usr/bin/bash
  source .bashrc # need to have rbenv and ruby available
  cloudflare-dns-update # may need to provide full path 
  

• Add onboot.sh script to your crontab (crontab -e):

  @reboot $HOME/onboot.sh