[stable/node-local-dns] add noIPv6Lookups config option (#587)

* add noIPv6Lookups config option

* update indent

Author: andrii29

stable/node-local-dns/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v2
 name: node-local-dns
-version: 2.0.12
+version: 2.0.13
 appVersion: 1.23.1
 maintainers:
 - name: gabrieladt

stable/node-local-dns/README.md

@@ -1,6 +1,6 @@
 # node-local-dns
 
-![Version: 2.0.12](https://img.shields.io/badge/Version-2.0.12-informational?style=flat-square) ![AppVersion: 1.23.1](https://img.shields.io/badge/AppVersion-1.23.1-informational?style=flat-square)
+![Version: 2.0.13](https://img.shields.io/badge/Version-2.0.13-informational?style=flat-square) ![AppVersion: 1.23.1](https://img.shields.io/badge/AppVersion-1.23.1-informational?style=flat-square)
 
 A chart to install node-local-dns.
 
@@ -57,6 +57,7 @@ helm install my-release deliveryhero/node-local-dns -f values.yaml
 | config.dnsServer | string | `"172.20.0.10"` |  |
 | config.healthPort | int | `8080` |  |
 | config.localDns | string | `"169.254.20.25"` |  |
+| config.noIPv6Lookups | bool | `false` |  |
 | config.prefetch.amount | int | `3` |  |
 | config.prefetch.duration | string | `"30s"` |  |
 | config.prefetch.enabled | bool | `false` |  |

stable/node-local-dns/templates/configmap.yaml

@@ -30,6 +30,11 @@ data:
         forward . __PILLAR__CLUSTER__DNS__ {
                 {{ .Values.config.commProtocol }}
         }
+    {{- if .Values.config.noIPv6Lookups }}
+        template IN AAAA {
+                rcode NOERROR
+        }
+    {{- end }}
         prometheus :9253
         health :{{ .Values.config.healthPort }}
         }
@@ -52,6 +57,11 @@ data:
         forward . __PILLAR__CLUSTER__DNS__ {
                 {{ .Values.config.commProtocol }}
         }
+    {{- if .Values.config.noIPv6Lookups }}
+        template IN AAAA {
+                rcode NOERROR
+        }
+    {{- end }}
         prometheus :9253
         }
     ip6.arpa:53 {
@@ -73,6 +83,11 @@ data:
         forward . __PILLAR__CLUSTER__DNS__ {
                 {{ .Values.config.commProtocol }}
         }
+    {{- if .Values.config.noIPv6Lookups }}
+        template IN AAAA {
+                rcode NOERROR
+        }
+    {{- end }}
         prometheus :9253
         }
     .:53 {
@@ -93,5 +108,10 @@ data:
     {{- end }}
         forward . __PILLAR__UPSTREAM__SERVERS__
         prometheus :9253
+    {{- if .Values.config.noIPv6Lookups }}
+        template IN AAAA {
+                rcode NOERROR
+        }
+    {{- end }}
         }
     {{ end }}

stable/node-local-dns/values.yaml

@@ -22,6 +22,9 @@ config:
   # Set communication protocol. Options are `prefer_udp` or `force_tcp`
   commProtocol: "force_tcp"
 
+  # If true, return NOERROR when attempting to resolve an IPv6 address
+  noIPv6Lookups: false
+
   # If enabled, coredns will prefetch popular items when they are about to be expunged from the cache. https://coredns.io/plugins/cache/
   prefetch:
     enabled: false