OVH online config
First, in domain / DynHost it is mandatory to create
- a DynHOST (with ip 0.0.0.0, for instance)
- a set of user / password credentials
Local config
Install ddclient package, and update the configuration.
cat /etc/ddclient.conf
# Custom configuration file for ddclient
protocol=dyndns2
daemon=5m
syslog=yes
use=web
server=www.ovh.com
login=foo
password=bar
mysubdomain.mydomain.com
see also: /etc/default/ddclient
run_dhclient="false"
run_ipup="false"
run_daemon="true"
daemon_interval="300"
see : Ubuntu ddclient documentation .