DNSChaos Experiment

    DNSChaos allows you to simulate fault DNS responses such as a DNS error or a random IP address after a request is sent.

    To create DNSChaos experiments in Chaos Mesh, you need to deploy a DNS service in Chaos Mesh by executing the command below:

    Make sure the Pod’s is Running.

    Below is a sample DNSChaos configuration file:

    • action: Defines the chaos action for DNS chaos. Supported actions are:

      • error - Get an error when sending the DNS request
      • - Get a random IP when sending the DNS request
    • selector: Specifies the target pods for chaos injection. For more details, see Define the Scope of Chaos Experiment.

    • The chaos DNS service runs CoreDNS with the plugin. If the CoreDNS service in your Kubernetes cluster contains some special configurations, you can edit configMap dns-server-config to make the configuration of the chaos DNS service consistent with that of the K8s CoreDNS service as shown below: