Identity Providers

Add HTPasswd authentication (OpenShift 4 only)

Create htpasswd file (with admin username)

htpasswd -c htpasswd admin

Create secret in openshift-config project

oc create secret generic htpasswd-secret --from-file htpasswd -n openshift-config

Edit cluster OAuth resource

cat << EOF | oc apply -f -
apiVersion: config.openshift.io/v1
kind: OAuth
metadata:
  name: cluster
spec:
  identityProviders:
  - name: htpasswd
    challenge: true
    login: true
    mappingMethod: claim
    type: HTPasswd
    htpasswd:
      fileData:
        name: htpasswd-secret
EOF

Optional: grant cluster-admin role

oc adm policy add-cluster-role-to-user cluster-admin admin

Remove kubeadmin user

oc delete secret kubeadmin -n kube-system