ironic-inspector/releasenotes/notes/disable-dhcp-c86a3a0ee2696ee0.yaml
Dmitry Tantsur 405c7de1f8 Disable DHCP completely when no nodes are on introspection
Currently we keep DHCP always open for new nodes. This is an overkill, as we
always know which nodes are on introspection. It also causes problems when not
all node NIC's are registered in Ironic, as these NIC's might get DHCP from our
server.

This change reduces probability of wrong nodes accessing our DHCP by REJECT'ing
all DHCP requests when no nodes are on introspection and node_not_found_hook is
not set. It does not solve the problem completely: conflicts are still possible
during the introspection.

Change-Id: I7a50c02023ef4364e14825cd80fa75565fac3dc8
Partial-Bug: #1557979
2016-03-16 12:19:10 +01:00

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---
fixes:
- DHCP is now disabled completely when no nodes are on introspection and
the "node_not_found_hook" is not set. This reduces probability of serving
DHCP to wrong nodes, if their NIC is not registered in Ironic. See
https://bugs.launchpad.net/ironic-inspector/+bug/1557979 and
https://bugzilla.redhat.com/show_bug.cgi?id=1317695 for details.