Automatic DNS updater for lxc (using lxd api). Modified original script by gg-tools
A daemon to update a dynamic DNS when lxc starts containers. Designed to be used with bind9. Have a look at this page to setup correctly your DNS before using it.
lxdDDNS.py [-h] --key KEY [--server SERVER] --domain DOMAIN
[--zone ZONE] [--log-level LOG_LEVEL]
[--log-file LOG_FILE] [--query-timeout N] [--interfaces IFACES] [--interval N]
optional arguments:
-h, --help show this help message and exit
--key KEY Path to the dynamic dns key
--server SERVER IP/Hostname of the server to update
--domain DOMAIN The domain to be updated
--zone ZONE The zone to be updated (default to the domain)
--log-level LOG_LEVEL
Log level to display
--log-file LOG_FILE Where to put the logs
--query-timeout N Number of seconds before queries to DNS resolver are skipped (default 1)
--interfaces IFACES Coma-separated list of network interfaces for which to look for ip. First found will be used (default eth0)
--interval N Number of seconds between updates (default 30)
This script is designed to run as a daemon after lxc's startup. There is sample systemd configuration present. You NEED to replace <keyfile> and <domain> with real values. After that, reload systemd:
systemctl daemon-reload
systemctl enable lxd-ddns
systemctl start lxd-ddns
- Script currently uses polling to check for running and stopped container. It would be nice to use events api ** The problem with this is that lxc does not emmit any event when container gains an IP address ** Could be used at least for destroying containers