commit db1656c2a28441c5af089ca5b30b807cb03d6352
Author: Matt Speer <mwspeer@gmail.com>
Date:   Sat Dec 20 12:25:01 2025 -0600

    initial commit

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+ddclient is used to update Cloudflare DNS with the current home internet public IP address.  Since the home internet uses a dynamic IP, this software runs as a service to pull the current public IP address and then update Cloudflare DNS using an API.  Without this service, accessing self-hosted applications would be less reliable and fail completely if the public IP address changes.
+
+# Installation
+
+To install ddclient, run following commands
+``` bash
+sudo apt-get update
+sudo apt install ddclient
+```
+
+Configure ddclient for use with Cloudflare DNS.  The password field is populated with the API token generated from Cloudflare.
+``` bash
+sudo nano /etc/ddclient.conf
+
+# Configuration file for ddclient generated by debconf
+#
+# /etc/ddclient.conf
+
+# techtrekkerz.com business domain
+protocol=cloudflare \
+use=web, web=ipify-ipv4 \
+zone=techtrekkerz.com \
+login=token \
+password='AiWIVPetG7by_Eclz3_Sb-n8C2Gxwvh2ts8FBHDU' \
+*.techtrekkerz.com
+
+# speerfam.net personal domain
+protocol=cloudflare \
+use=web, web=ipify-ipv4 \
+zone=speerfam.net \
+login=token \
+password='AiWIVPetG7by_Eclz3_Sb-n8C2Gxwvh2ts8FBHDU' \
+*.speerfam.net
+
+```
+
+Configure ddclient to run as a service
+``` bash
+sudo nano /etc/default/ddclient
+
+# Configuration for ddclient scripts
+# generated from debconf on Tue May 14 12:03:42 PM CDT 2024
+#
+# /etc/default/ddclient
+
+# Set to "true" if ddclient should be run every time DHCP client ('dhclient'
+# from package isc-dhcp-client) updates the systems IP address.
+run_dhclient="false"  
+
+# Set to "true" if ddclient should be run every time a new ppp connection is
+# established. This might be useful, if you are using dial-on-demand.
+run_ipup="false"  
+
+# Set the time interval between the updates of the dynamic DNS name in seconds.
+# This option only takes effect if the ddclient runs in daemon mode.
+run_daemon="true"
+daemon_interval="5m"
+```
+
+Start ddclient service and set service to start at boot
+``` bash
+sudo systemctl start ddclient.service
+sudo update-rc.d ddclient enable
+```
+
+-----
+# Backup
+
+To backup the configuration settings of ddclient, run the following commands.
+``` bash
+sudo rsync /etc/ddclient.conf /mnt/5TB-Disk1/backup/server/ddclient/ && sudo rsync /etc/default/ddclient /mnt/5TB-Disk1/backup/server/ddclient/
+```
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