Files
homelab/k8s/bootstrap/coredns/coredns-configmap.yaml
T
Story Crater Bot 1f97d744f6 feat(dns): add git.riotpiao.com subdomain for Forgejo SSH access
Adds CoreDNS rewrite: git.riotpiao.com → forgejo-gitea-ssh.cicd.svc.cluster.local

Separates SSH from HTTPS access:
  - forgejo.riotpiao.com → HTTPS/Web UI (192.168.1.160, ingress)
  - git.riotpiao.com → SSH (192.168.1.165:2222, LoadBalancer)

Usage:
  git remote set-url origin ssh://[email protected]:2222/riotpiao.com/homelab.git
  git push

External access requires /etc/hosts entry:
  192.168.1.165  git.riotpiao.com
2026-08-18 15:08:03 -07:00

79 lines
3.7 KiB
YAML

# k8s/coredns/coredns-configmap.yaml
# Patches the CoreDNS Corefile to rewrite homelab hostnames to internal services.
#
# Why this is needed:
# Grafana v10+ does OIDC auto-discovery by fetching
# /.well-known/openid-configuration from Authentik. When Grafana reaches
# Authentik via the external hostname (authentik.riotpiao.com), the
# HTTP Host header is preserved and Authentik returns external URLs in the
# discovery response. Without this rewrite, the hostname doesn't resolve
# inside the cluster and Grafana falls back to the internal service DNS,
# causing all OAuth redirects to go to authentik-server.iam.svc.cluster.local.
#
# Applied by helmfile presync hook on the ingress-nginx release.
apiVersion: v1
kind: ConfigMap
metadata:
name: coredns
namespace: kube-system
data:
Corefile: |
.:53 {
errors
health {
lameduck 5s
}
ready
log . {
class error
}
prometheus :9153
# VPN Access: Map api-server.cluster.local to cluster API IP
# Allows secure cluster access via WireGuard tunnel (Shadowrocket/Talos)
rewrite name api-server.cluster.local kubernetes.default.svc.cluster.local
# Forgejo: route through nginx ingress like every other host below. nginx
# terminates TLS (wildcard-tls) on :443 and routes both /v2/ (container
# registry) and web/git to forgejo-gitea-http:3000.
# Do NOT point this at forgejo-gitea-http directly: that service only serves
# port 3000, so containerd image pulls (which use https/:443) get
# `dial tcp <clusterIP>:443: i/o timeout`. SSH stays on its own LB service.
rewrite name forgejo.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
rewrite name git.riotpiao.com forgejo-gitea-ssh.cicd.svc.cluster.local
# Rewrite homelab hostnames to the nginx ingress controller so in-cluster pods
# hit nginx TLS termination (cert-manager cert) and preserve the Host header.
# Routing through nginx — not directly to the backend service — is critical:
# direct rewrites to the backend bypass nginx TLS and expose each app's own
# self-signed cert, which nothing in the cluster trusts.
rewrite name authentik.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
rewrite name grafana.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
rewrite name minio.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
rewrite name minio-api.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
rewrite name argocd.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
rewrite name vault.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
rewrite name loki.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
rewrite name prometheus.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
rewrite name homarr.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
rewrite name portainer.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
rewrite name longhorn.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
kubernetes cluster.local in-addr.arpa ip6.arpa {
pods insecure
fallthrough in-addr.arpa ip6.arpa
ttl 30
}
forward . 8.8.8.8 1.1.1.1 {
max_concurrent 1000
}
cache 30 {
disable success cluster.local
disable denial cluster.local
}
loop
reload
loadbalance
}