From 9a645ba86debbb6a03ce023ab5e2d9070d4ebac2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?BENEDEK=20L=C3=A1szl=C3=B3?= <lacbenedek@gmail.com>
Date: Sat, 3 May 2025 02:33:15 +0200
Subject: [PATCH] coredns

---
 k8s/coredns/coredns.yml | 126 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 k8s/coredns/coredns.yml

diff --git a/k8s/coredns/coredns.yml b/k8s/coredns/coredns.yml
new file mode 100644
index 0000000..87a20c3
--- /dev/null
+++ b/k8s/coredns/coredns.yml
@@ -0,0 +1,126 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: dns
+
+---
+kind: ConfigMap
+apiVersion: v1
+metadata:
+  name: config
+  namespace: dns
+data:
+  Corefile: |-
+    .:53 {
+      log
+      errors
+      file /config/db.cluster
+    }
+
+  db.cluster: |-
+    $TTL 1m
+    $ORIGIN cluster.
+    @    IN    SOA cluster. lacbenedek.gmail.com. (
+        2025050202 ; serial
+        1m         ; period
+        1m         ; retry
+        1m         ; exp
+        1m         ; ttl
+    )
+    cluster.         IN A     192.168.123.240
+    cluster.         IN TXT   "example txt section in dns"
+    control.cluster. IN A     192.168.123.1
+
+---
+
+kind: Deployment
+apiVersion: apps/v1
+metadata:
+  name: coredns
+  namespace: dns
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: coredns
+  template:
+    metadata:
+      labels:
+        app: coredns
+    spec:
+      containers:
+        - name: coredns
+          image: coredns/coredns
+          ports:
+            - containerPort: 53
+              protocol: UDP
+            - containerPort: 53
+              protocol: TCP
+          args:
+            - -conf=/config/Corefile
+          volumeMounts:
+            - mountPath: /config
+              name: config
+              readOnly: true
+          resources:
+            limits:
+              cpu: '1000m'
+              memory: '500Mi'
+            requests:
+              cpu: '10m'
+              memory: '10Mi'
+      volumes:
+        - name: config
+          configMap:
+            name: config
+
+---
+
+kind: Service
+apiVersion: v1
+metadata:
+  name: dns
+  namespace: dns
+spec:
+  ports:
+    - port: 53
+      targetPort: 53
+      protocol: UDP
+      name: dns
+    - port: 53
+      targetPort: 53
+      protocol: TCP
+      name: dns-tcp
+  selector:
+    app: coredns
+
+---
+
+apiVersion: traefik.io/v1alpha1
+kind: IngressRouteUDP
+metadata:
+  name: dns
+  namespace: dns
+spec:
+  entryPoints:
+  - dns
+  routes:
+  - services:
+    - name: dns
+      port: 53
+
+---
+
+apiVersion: traefik.io/v1alpha1
+kind: IngressRouteTCP
+metadata:
+  name: dnstcp
+  namespace: dns
+spec:
+  entryPoints:
+  - dnstcp
+  routes:
+  - match: HostSNI('*')
+    services:
+    - name: dns
+      port: 53