ovh-dynhost-updater

A tool to automatically update an OVH DynHost record with your public IP address.

It can be run as a long running process (daemon) or as a regular cronjob task.

Usage

Options

The tool accepts the following command-line options:

Name	Description	Default value
-daemon	Run the program as a daemon.	false
-delay	If the program is run as a daemon, number of minutes to wait between updates.	10
-hostname	Hostname of the DynHost record to update.

The tool reads the following environment variables:

Name	Description	Default value
LOGIN	DynHost login. The tool will exit if this environment variable is not defined.
PASSWORD	DynHost password. The tool will exit if this environment variable is not defined.

Installation

cron job

Run the following commands to download the tool:

sudo wget https://github.com/Tomy2e/ovh-dynhost-updater/releases/latest/download/ovh-dynhost-updater-linux-amd64 -O /usr/local/bin/ovh-dynhost-updater
sudo chmod +x /usr/local/bin/ovh-dynhost-updater

Update the CHANGEME values then run the following commands to create the file that contains your DynHost credentials:

sudo bash -c "cat >> /usr/local/etc/ovh-dynhost-updater-creds" << EOL
export LOGIN=CHANGEME
export PASSWORD=CHANGEME
EOL
sudo chmod 0700 /usr/local/etc/ovh-dynhost-updater-creds

Open the crontab file:

sudo crontab -e

Append the following line to your crontab file, update the CHANGEME values, then save:

*/10 * * * * (. /usr/local/etc/ovh-dynhost-updater-creds && /usr/local/bin/ovh-dynhost-updater --hostname=CHANGEME) 2>&1 | logger -t ovh-dynhost-updater

The tool will run every ten minutes, run the following command to see the logs:

grep 'ovh-dynhost-updater' /var/log/syslog