diff --git a/README.md b/README.md
index 2e3201d..5c954ad 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,7 @@ For more information about k3s cluster/nodes setup check [readme](./docs/k3s-clu
 - [Wyoming](#wyoming)
 - [Zigbee2mqtt](#zigbee2mqtt)
 - [node-red](#node-red)
+- [core-dns](#core-dns)
 
 ## Home Assistant
 
@@ -81,3 +82,28 @@ Deployments and scripts on services/Zigbee2mqtt repo folder.
 ```bash
 ./services/node-red/ops-scripts/apply-infra.sh
 ```
+
+## core-dns
+
+Remove warning from logs.
+
+```log
+[WARNING] No files matching import glob pattern: /etc/coredns/custom/*.server
+[WARNING] No files matching import glob pattern: /etc/coredns/custom/*.override
+```
+
+1. Apply on kubernetes
+
+```yaml
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: coredns-custom
+  namespace: kube-system
+data:
+  log.override: |
+    #
+  stub.server: |
+    #
+
+```