tencent cloud

Customized DNS Service of Serverless Cluster
Download PDF
Last updated: 2024-12-24 16:46:40
Customized DNS Service of Serverless Cluster
Last updated: 2024-12-24 16:46:40
Download PDF
Note:
The entry for DNS Forward configuration is no longer available. The parameters of DNS Forward configured previously will be synced and updated in the Corefile of CoreDNS. If you want to modify the DNS service of the cluster, please refer to the following instructions or the directions of native Kubernetes CoreDNS.

Overview

This document describes how to modify the DNS service of a cluster through modifying the CoreDNS configuration file.

Prerequisites

You have created an serverless cluster. You need to select Deploy CoreDNS to allow the service discovery in the cluster in the advanced configuration at the time of creation.

Directions

Default Corefile configuration

When a CoreDNS is deployed in an serverless cluster, a Configmap is mounted by default to act as the CoreDNS configuration file (i.e. Corefile). The default configuration of Corefile is as follows:
apiVersion: v1
kind: ConfigMap
metadata:
  name: coredns
  namespace: kube-system
data:
  Corefile: |
    .:53 {
        errors
        health :8081
        kubernetes cluster.local in-addr.arpa ip6.arpa {
           pods insecure
           fallthrough in-addr.arpa ip6.arpa
           ttl 30
        }
        prometheus :9153
        forward . 183.60.83.19 183.60.82.98
        cache 30
        loop
        reload
        loadbalance
    }
Each configuration item adopts the configuration of native Kubernetes. For details, see CoreDNS. Please note:
forward：183.60.83.19, 183.60.82.98 is the default DNS address of Tencent Cloud.

Customize configuration of Corefile

You can modify ConfigMap of CoreDNS (i.e. Corefile) to modify relevant configuration of service discovery. The use method is consistent with that of the native kubernetes. For details, see Customizing DNS Service.
Was this page helpful?
You can also Contact Sales or Submit a Ticket for help.
Yes
No

Feedback