ovhDynDnsUpdate

Simple bash scripts to update the IP of a dynamic host on OVH.

How this works

Update process is described here: https://docs.ovh.com/fr/domains/utilisation-dynhost/

The script actually checks few things then simply call the following command:

curl -u ${DYNDNS_USER}:${DYNDNS_PASS} "http://www.ovh.com/nic/update?system=dyndns&hostname=${DYNDNS_DOMAIN}&myip=${PUBLIC_IP}"

The public IP is resolved using OpenDNS or 4.icanhazip.com courtesy:

dig +short myip.opendns.com @resolver1.opendns.com -4
curl 4.icanhazip.com

Change Config & Force Update

# Edit config file (use sudo, permission is 600)
sudo vi /etc/dyndns_ovh.conf
# Remove last IP file
sudo rm /var/cache/dyndns_ovh_last_ip
# Run installed script
sudo /usr/local/bin/update_ovh_dyndns