Files
Homelabv4/infrastructure/coredns/manifests/coredns-configmap.yaml
T
Scooby HuskyandClaude Sonnet 5 da60230997 Bring kube-system/coredns under GitOps management
Directly addresses the user's point: 3 existing DNS rewrite rules (auth/
rancher/netbird.kube.huskypup.net) were only ever applied via live kubectl
edits, never git-tracked - meaning every future change (like the
pg-authentik.ha.huskypup.net rewrite this session needed) required a
manual, classifier-gated live edit to cluster-wide DNS config instead of
a normal commit ArgoCD applies on its own.

No Talos/kubeadm ownerReferences on the ConfigMap or Deployment (checked
live), so it's safe for ArgoCD to take over. No pod restart needed after
sync either - the Corefile's own 'reload' plugin hot-reloads within
~30-60s of the ConfigMap volume updating on disk.

Adds the pg-authentik.ha.huskypup.net rewrite (see the failover-watcher
commits) as part of the same change, now flowing through git like
everything else instead of the standalone script handed off previously.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-20 18:30:03 -05:00

70 lines
2.8 KiB
YAML

# Brings kube-system/coredns's Corefile under GitOps management. It was
# previously only ever edited live via kubectl (3 existing rewrite rules
# for auth/rancher/netbird.kube.huskypup.net, none of them git-tracked
# anywhere in this repo) - every future change meant a manual,
# classifier-gated live edit to a cluster-wide DNS config instead of a
# normal git commit ArgoCD applies on its own. No Talos/kubeadm
# ownerReferences on this ConfigMap or the coredns Deployment (confirmed
# live 2026-08-20), so it's safe to take over here.
#
# No pod restart needed after a sync - the Corefile's own `reload` plugin
# (already present below) watches the mounted file and hot-reloads within
# ~30-60s of the ConfigMap volume actually updating on disk (kubelet
# propagates ConfigMap changes to mounted volumes automatically, typically
# within ~60-90s).
apiVersion: v1
kind: ConfigMap
metadata:
name: coredns
namespace: kube-system
data:
Corefile: |
.:53 {
errors
health {
lameduck 5s
}
ready
log . {
class error
}
prometheus :9153
# Rewrite auth.kube.huskypup.net to ingress gateway (NOT authentik-server directly)
# This ensures HTTPS works because the ingress gateway has the wildcard TLS cert.
# The old rewrite to authentik-server caused TLS failures for OIDC token exchange.
rewrite name auth.kube.huskypup.net istio-ingressgateway.istio-system.svc.cluster.local
# Rewrite rancher.kube.huskypup.net to internal Istio ingress gateway
rewrite name rancher.kube.huskypup.net istio-ingressgateway.istio-system.svc.cluster.local
# Rewrite netbird.kube.huskypup.net to internal Istio ingress gateway
rewrite name netbird.kube.huskypup.net istio-ingressgateway.istio-system.svc.cluster.local
# Multi-site active failover pilot (see
# /home/scooby/.claude/plans/jiggly-snacking-iverson.md): home's
# own pods resolving the floating pg-authentik.ha.huskypup.net
# record always go straight to the local CNPG -rw service instead
# of round-tripping out through the UniFi WAN port-forward and
# back in - this UniFi doesn't support NAT hairpin/loopback for
# its own forwarded ports (confirmed live 2026-08-20: DNS
# resolved fine, TCP connect failed).
rewrite name pg-authentik.ha.huskypup.net pg-authentik-rw.authentik.svc.cluster.local
kubernetes cluster.local in-addr.arpa ip6.arpa {
pods insecure
fallthrough in-addr.arpa ip6.arpa
ttl 30
}
forward . 1.1.1.1 8.8.8.8 {
max_concurrent 1000
}
cache 30 {
disable success cluster.local
disable denial cluster.local
}
loop
reload
loadbalance
}