Ironic Inspector's dnsmasq does not start on IPv6 undercloud

[Harald Jensås]

When deploying the undercloud with IPv6 provisioning network Ironic Instector's dnsmasq service fail to start with error:

  Sep 18 13:17:31 undercloud.rdocloud dnsmasq[42201]: bad IP address at line 5 of /etc/ironic-inspector/dnsmasq.conf
Sep 18 13:17:31 undercloud.rdocloud dnsmasq[42201]: FAILED to start up

undercloud.conf:

[DEFAULT]

templates = /home/centos/tripleo-heat-templates
# container_images_file = /home/centos/containers-prepare-parameter.yaml

enable_routed_networks = true
enable_ui = false
overcloud_domain_name = localdomain
scheduler_max_attempts = 2
undercloud_ntp_servers = pool.ntp.org
undercloud_hostname = undercloud.rdocloud
local_interface = eth1
local_mtu = 1450
local_ip = fd12:3456:789a:1::1/64
undercloud_public_host = fd12:3456:789a:1::2
undercloud_admin_host = fd12:3456:789a:1::3
undercloud_nameservers = 8.8.8.8,8.8.4.4
local_subnet = ctlplane-subnet
subnets = ctlplane-subnet,ctlplane-leaf1,ctlplane-leaf2

[ctlplane-subnet]
cidr = fd12:3456:789a:1::/64
gateway = fd12:3456:789a:1::fffe
dns_nameservers = fd12:3456:789a:1::1
inspection_iprange = fd12:3456:789a:1::aaaa,fd12:3456:789a:1::afff
masquerade = false

[ctlplane-leaf1]
cidr = fd12:3456:789a:2::/64
gateway = fd12:3456:789a:2::fffe
dns_nameservers = fd12:3456:789a:1::1
inspection_iprange = fd12:3456:789a:2::aaaa,fd12:3456:789a:2::afff
masquerade = false

[ctlplane-leaf2]
cidr = fd12:3456:789a:3::/64
gateway = fd12:3456:789a:3::fffe
dns_nameservers = fd12:3456:789a:1::1
inspection_iprange = fd12:3456:789a:3::aaaa,fd12:3456:789a:3::afff
masquerade = false

[Harald Jensås (harald-jensas)]

# cat /var/lib/config-data/puppet-generated/ironic_inspector/etc/ironic-inspector/dnsmasq.conf
port=0
interface=br-ctlplane

dhcp-range=set:ctlplane-subnet,fd12:3456:789a:1::aaaa,fd12:3456:789a:1::afff,64,10m
dhcp-option=tag:ctlplane-subnet,option:router,fd12:3456:789a:1::fffe
dhcp-range=set:ctlplane-leaf1,fd12:3456:789a:2::aaaa,fd12:3456:789a:2::afff,64,10m
dhcp-option=tag:ctlplane-leaf1,option:router,fd12:3456:789a:2::fffe
dhcp-range=set:ctlplane-leaf2,fd12:3456:789a:3::aaaa,fd12:3456:789a:3::afff,64,10m
dhcp-option=tag:ctlplane-leaf2,option:router,fd12:3456:789a:3::fffe
dhcp-sequential-ip
dhcp-match=ipxe,175
dhcp-match=set:efi,option:client-arch,7
dhcp-match=set:efi,option:client-arch,9
dhcp-match=set:efi,option:client-arch,11
# Client is already running iPXE; move to next stage of chainloading
dhcp-boot=tag:ipxe,http://fd12:3456:789a:1::1:8088/inspector.ipxe
# Client is PXE booting over EFI without iPXE ROM; send EFI version of iPXE chainloader
dhcp-boot=tag:efi,tag:!ipxe,ipxe.efi
# Client is running PXE over BIOS; send BIOS version of iPXE chainloader
dhcp-boot=undionly.kpxe,localhost.localdomain,fd12:3456:789a:1::1

dhcp-hostsdir=/var/lib/ironic-inspector/dhcp-hostsdir

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/683414

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/683414
Committed: https://git.openstack.org/cgit/openstack/puppet-ironic/commit/?id=15eedd0c4c04a322c16e66aa8e75c8c93c017036
Submitter: Zuul
Branch: master

commit 15eedd0c4c04a322c16e66aa8e75c8c93c017036
Author: Harald Jensås <email address hidden>
Date: Thu Sep 19 09:02:16 2019 +0200

    Fix Inspector dnsmasq config for IPv6

    Extend and re-name the function ipv6_netmask_to_prefix() to
    ipv6_normalize_dnsmasq_ip_subnets(). It now changes the netmask
    to prefix and removes the 'gateway' if it is an IPv6 subnet.

    On IPv6 router info should be provided in router advertisements.
    There was a draft to add support in DHCPv6, but it was never
    completed.
    https://datatracker.ietf.org/doc/draft-ietf-mif-dhcpv6-route-option/

    Also:
      Add match for userclass iPXE and set option6:bootfile-url

    Closes-Bug: #1844573
    Change-Id: I47d88519acd18630e0d5682d93f1088771ec03a1

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-ironic 15.4.0 release.