mirror of
https://github.com/siderolabs/talos.git
synced 2025-10-08 14:11:13 +02:00
45c5b47a57
This adds support for automatically registering node hostnames in DNS by sending the current hostname to DHCP via option 12. If the current hostname is updated, issue a new DISCOVER to propagate the update to DHCP (updating the hostname on lease renewals is not universally supported by DHCP servers). This addition maintains the previous functionality where the node can also request its hostname from the DHCP server. The received hostname will be processed and prioritized as usual by the `network.HostnameSpecController`. This change set also contains fixes to make DHCP renewals compliant with RFC 2131, specifically avoiding sending the server identifier and requested IP address when issuing renewals using a previous offer. This also uncovered issues and missing features in the upstream `insomniacslk/dhcp` library, the fixes and improvements for which are now finally merged. Sending hostname updates have been tested against `dnsmasq` and the built-in DHCP + DNS services in Windows Server. Hostname retrieval from DHCP and edge cases with overridden hostnames from different configuration layers have been extensively tested against `dnsmasq`. Signed-off-by: Dennis Marttinen <twelho@welho.tech> Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>