Mark Goddard 92eb477798 Allow undionly.kpxe boot option to be overridden ... As an operator, I may wish to provide DHCP boot options for hosts not managed by bifrost using the bifrost dnsmasq server. If a dhcp-boot configuration option is provided to dnsmasq via a file in /etc/dnsmasq.d/, and the server is not booted via iPXE, it will be overridden by the undionly.kpxe option added by bifrost in /etc/dnsmasq.conf. This occurs because the negated tag match !ipxe used in the /undionly.kpxe dhcp-boot entry will match all hosts not using iPXE. The dhcp-boot entries are processed in order and the last matching entry wins. Since the config-dir option appears before the dhcp-boot options, user-provided options are processed first and are therefore overridden. The solution here is fairly simple - use a positive match for the ipxe tag: dhcp-boot=tag:ipxe,http://host:port/boot.ipxe dhcp-boot=/undionly.kpxe An entry with a tag will always win over the entry without a tag specified, so it is now possible to add a rule to override undionly.kpxe. Change-Id: Ic0637e14504def73fbc0333eee9dc2456c57c32e Closes-Bug: #1675367		2017-03-27 11:21:52 +01:00
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dhcp.rst	Allow undionly.kpxe boot option to be overridden	2017-03-27 11:21:52 +01:00
keystone.rst	Documentation cleanup	2017-03-02 18:55:41 +00:00