From e1f79974f76cac0d57a6f01040b4539eaf937d80 Mon Sep 17 00:00:00 2001
From: Nitin Verma <nitin.verma@cint.com>
Date: Tue, 26 Aug 2025 09:02:42 +0100
Subject: [PATCH] falcon-sensor: Add support for dnsConfig parameter which is
 supported as a common parameter across various public helm charts. See more:-
 https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-dns-config

---
 .../falcon-sensor/templates/daemonset.yaml        |  4 ++++
 helm-charts/falcon-sensor/values.schema.json      | 15 +++++++++++++++
 helm-charts/falcon-sensor/values.yaml             | 13 +++++++++++++
 3 files changed, 32 insertions(+)

diff --git a/helm-charts/falcon-sensor/templates/daemonset.yaml b/helm-charts/falcon-sensor/templates/daemonset.yaml
index 7a5f5aaf..17823138 100644
--- a/helm-charts/falcon-sensor/templates/daemonset.yaml
+++ b/helm-charts/falcon-sensor/templates/daemonset.yaml
@@ -195,6 +195,10 @@ spec:
     {{- end }}
       hostNetwork: true
       dnsPolicy: ClusterFirstWithHostNet
+      {{- with .Values.node.daemonset.dnsConfig }}
+      dnsConfig:
+      {{- toYaml . | nindent 8 }}
+      {{- end }}
       hostPID: true
       hostIPC: true
 {{- end }}
diff --git a/helm-charts/falcon-sensor/values.schema.json b/helm-charts/falcon-sensor/values.schema.json
index 14b5177a..9bf4440e 100644
--- a/helm-charts/falcon-sensor/values.schema.json
+++ b/helm-charts/falcon-sensor/values.schema.json
@@ -217,6 +217,21 @@
                                     "default": {}
                                 }
                             }
+                        },
+                        "dnsConfig": {
+                          "type": "object",
+                          "properties": {
+                            "nameservers": {
+                              "type": "array"
+                            },
+                            "searches": {
+                              "type": "array"
+                            },
+                            "options": {
+                              "type": "array"
+                              }
+                            }
+                          }
                         }
                     }
                 },
diff --git a/helm-charts/falcon-sensor/values.yaml b/helm-charts/falcon-sensor/values.yaml
index 2cd6e031..5031eef2 100644
--- a/helm-charts/falcon-sensor/values.yaml
+++ b/helm-charts/falcon-sensor/values.yaml
@@ -79,6 +79,19 @@ node:
     # Sets the max unavailable nodes. Default is 1 when no value exists.
     maxUnavailable: 1
 
+    # Specifies the pod DNS configuration.
+    dnsConfig: {}
+    #  nameservers:
+    #    - 1.2.3.4
+    #  searches:
+    #    - ns1.svc.cluster-domain.example
+    #    - my.dns.search.suffix
+    #  options:
+    #    - name: ndots
+    #      value: "1"
+    #    - name: attempts
+    #      value: "3"
+
   image:
     repository: falcon-node-sensor
     pullPolicy: Always