amend coredns config for network and deploy

Author: clanktron

clusters/home/core/kustomization.yaml

@@ -2,7 +2,7 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
 - ./cockroachdb.yaml
-  # - ./coredns.yaml
+- ./coredns.yaml
 - ./longhorn.yaml
 - ./mariadb.yaml
 - ./metallb.yaml

core/coredns/config.yaml

@@ -2,25 +2,19 @@
 apiVersion: v1
 kind: ConfigMap
 metadata:
-  name: coredns-config
+  name: coredns
 data:
   Corefile: |-
-    . {
-       errors
-       health {
-          lameduck 5s
-       }
-       ready
-       hosts /etc/coredns/Hosts {
-          fallthrough
-       }
-       forward . 1.1.1.1:53 {
-          max_concurrent 1000
-       }
-       cache 30
-       loop
-       reload
-       loadbalance
+    .:53 {
+      log
+      errors
+    
+      template IN A {
+        match "^(.*\.)local\.claytonc\.dev\.$"
+        answer "{{ .Name }} 60 IN A 10.56.1.101"
+        fallthrough
+      }
+    
+      forward . 10.56.1.1
+      cache 30
     }
-  Hosts: |-
-    ${INTERNAL_LB} *.local.claytonc.dev

core/coredns/deployment.yaml

@@ -22,6 +22,9 @@ spec:
       containers:
         - name: coredns
           image: "coredns/coredns"
+          args:
+          - -conf
+          - /etc/coredns/Corefile
           resources:
             requests:
               memory: "250Mi"
@@ -33,14 +36,11 @@ spec:
           env:
             - name: TZ
               value: PT
-          ports:
-            - name: dns
-              containerPort: 53
-              protocol: UDP
           volumeMounts:
             - name: config
-              mountPath: /etc/coredns
+              mountPath: /etc/coredns/Corefile
+              subPath: Corefile
       volumes:
         - name: config
           configMap:
-            name: coredns-config
+            name: coredns

core/coredns/loadbalancer.yaml

@@ -10,8 +10,8 @@ spec:
   type: LoadBalancer
   ports:
   - port: 53
-    targetPort: dns
     protocol: UDP
-    name: dns
+  - port: 53
+    protocol: TCP
   selector:
     app.kubernetes.io/name: coredns

core/coredns/namespace.yaml

@@ -2,4 +2,3 @@ apiVersion: v1
 kind: Namespace
 metadata:
   name: coredns
-