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puppet-prod/site/profiles/manifests/haproxy/dns.pp
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haproxy::dns: fully-qualify halb CNAME targets
The halb published service CNAMEs (git.unkin.net, dashboard.ceph.unkin.net, ...)
with a bare target label ("au-syd1-prod-halb-vrrp"). dns-updater parses the
record value with no $ORIGIN, so a bare label becomes root-absolute
("au-syd1-prod-halb-vrrp.") and dead-ends in NXDOMAIN -- breaking every
halb-fronted name once the k8s bind became authoritative.

Emit fully-qualified targets (trailing dot) for both the vrrp and non-vrrp
CNAMEs, matching the FQDN value dns-updater expects:
- au-syd1-prod-halb-vrrp.<domain>. and au-syd1-prod-halb.<domain>.
2026-07-19 00:46:04 +10:00

77 lines
3.0 KiB
Puppet

# profiles::haproxy::dns
class profiles::haproxy::dns (
Stdlib::IP::Address $ipaddr,
Array[Stdlib::Fqdn] $vrrp_cnames = [],
Array[Stdlib::Fqdn] $cnames = [],
Integer $order = 10,
){
# create an A record for each load balancer in a region
$location_environment = "${facts['country']}-${facts['region']}-${facts['environment']}"
profiles::dns::record { "${facts['networking']['fqdn']}_${location_environment}-halb_A":
value => $::facts['networking']['ip'],
type => 'A',
record => "${location_environment}-halb",
zone => $::facts['networking']['domain'],
order => $order,
}
# export cnames for haproxy applications
$cnames.each |$cname| {
$parts = split($cname, '\.')
$domain = join($parts[1, $parts.length], '.')
profiles::dns::record { "${::facts['networking']['fqdn']}_${cname}_CNAME":
# CNAME target must be a fully-qualified name (trailing dot): dns-updater
# parses the value with no $ORIGIN, so a bare label becomes root-absolute
# ("au-syd1-prod-halb.") and dead-ends in NXDOMAIN.
value => "${location_environment}-halb.${facts['networking']['domain']}.",
type => 'CNAME',
record => "${cname}.",
zone => $domain,
order => $order,
}
}
# if it is, find hosts, sort them so they dont cause changes every run
$servers_array = sort(puppetdb_query(
"facts[certname] {
name = 'enc_role' and value = '${facts['enc_role']}' and
certname in facts[certname] { name = 'country' and value = '${facts['country']}' } and
certname in facts[certname] { name = 'region' and value = '${facts['region']}' } and
certname in facts[certname] { name = 'environment' and value = '${facts['environment']}' }
}"
).map |$fact| { $fact['certname'] })
# give enough time for a few hosts to be provisioned
if length($servers_array) >= 3 {
# if this is the first host in the returned filter, export a/cnames for haproxy applications
if $servers_array[0] == $trusted['certname'] {
['main.unkin.net', 'unkin.net'].each |$domain| {
profiles::dns::record { "${facts['networking']['fqdn']}_vrrp_${domain}_${location_environment}-halb-vrrp":
value => $ipaddr,
type => 'A',
record => "${location_environment}-halb-vrrp",
zone => $domain,
order => $order,
}
}
$vrrp_cnames.each |$cname| {
$parts = split($cname, '\.')
$domain = join($parts[1, $parts.length], '.')
profiles::dns::record { "${::facts['networking']['fqdn']}_${cname}_CNAME":
# Fully-qualified target (trailing dot); see the note on the non-vrrp
# cnames above. The matching A record is published in main.unkin.net
# and unkin.net just above.
value => "${location_environment}-halb-vrrp.${facts['networking']['domain']}.",
type => 'CNAME',
record => "${cname}.",
zone => $domain,
order => $order,
}
}
}
}
}