DDNS_Namecheap

__readme

How to
========
copy ddns.config /etc/default/
copy ddns.{service,timer} /etc/systemd/system/
echo "adjust ddns.config ..."
vi /etc/default/ddns.config
systemctl daemon-reload
systemctl enable ddns.timer
systemctl start ddns.timer

ddns.config

#!/bin/bash

DEV="IFNAME to fetch IP, i.e. eth0"
KEY="NAMECHEAP DDNS KEY"
_DOMAIN="DOMAIN - i.e. example.com"
_HOST="HOST - i.e. sample -> sample.example.com"

ddns.service

[Unit]
Description=DDns update job

; replace paths to suitable fo you

[Service]
EnvironmentFile=/usr/srv/_conf/system/ddns/.config
Type=oneshot
ExecStartPre=bash -c '[[ ! -d "/usr/srv/_conf/system/ddns/cache" ]] && mkdir -p "/usr/srv/_conf/system/ddns/cache" || true'
ExecStartPre=bash -c 'echo _MYIP=$(/usr/sbin/ip addr show dev ${DEV}|grep inet|head -n 1|awk \'{print $2}\'| cut -d\'/\' -f1) >/usr/srv/_conf/system/ddns/cache/.myip'
EnvironmentFile=-/usr/srv/_conf/system/ddns/cache/.myip
EnvironmentFile=-/usr/srv/_conf/system/ddns/cache/.myip.old
ExecStart=bash -c '[[ "x${_MYIP}" != "x${_MYIP_OLD}" ]] && curl "https://dynamicdns.park-your-domain.com/update?host=${_HOST}&domain=${_DOMAIN}&password=${KEY}&ip=${_MYIP}" || true'
ExecStartPost=bash -c 'echo _MYIP_OLD=${_MYIP} > /usr/srv/_conf/system/ddns/cache/.myip.old'

ddns.timer

[Unit]
Description=Starting DDns Service

[Timer]
OnUnitActiveSec=5m
OnBootSec=5m

[Install]
WantedBy=timers.target