It is a pod preset mutating admission webhook for the ibm-common-service-operator. Check the design document here. This operator is from implement of podpreset

In order to solve the a known dns issue which causes a 5 seconds dns resolving delay in the Openshift and Kubernetes.

This webhook will add dnsconfig into the pods

template:
  spec:
    dnsConfig:
      options:
        - name: single-request-reopen

• Red Hat OpenShift Container Platform 4.2 or newer installed on one of the following platforms:

  • Linux x86_64
  • Linux on Power (ppc64le)
  • Linux on IBM Z and LinuxONE

The operator version is 0.0.1

Use the following quick start commands for building and testing the operator:

make install

Use the following commands to debug the operator:

oc describe deploy <ibm-common-service-webhook pod> -n ibm-common-services
oc logs <ibm-common-service-webhook pod>
oc get MutatingWebhookConfiguration mutating-webhook-configuration -oyaml