diff --git a/k8s/infrastructure/coredns-custom.yaml b/k8s/infrastructure/coredns-custom.yaml
new file mode 100644
index 0000000..178e8a1
--- /dev/null
+++ b/k8s/infrastructure/coredns-custom.yaml
@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: coredns-custom
+  namespace: kube-system
+data:
+  homelab.override: |
+    hosts {
+      192.168.51.200 keycloak.n0ball.tw grafana.n0ball.tw vault.n0ball.tw gitea.n0ball.tw
+      fallthrough
+    }
diff --git a/k8s/infrastructure/kustomization.yaml b/k8s/infrastructure/kustomization.yaml
index cf048b2..05fb1c9 100644
--- a/k8s/infrastructure/kustomization.yaml
+++ b/k8s/infrastructure/kustomization.yaml
@@ -10,3 +10,4 @@ resources:
   - openldap/helmrelease.yaml
   - keycloak/helmrelease.yaml
   - oidc-rbac.yaml
+  - coredns-custom.yaml