Chapter 6. Installing Red Hat OpenShift 3.11 on IBM PowerVC 155
3. Expose the OpenShift image registry with a route:
4. For Elasticsearch, ensure that the vm.max_map_count setting is at least 262144 on all 
nodes. Run the following command to check:
5. For the metrics server, check that the OpenShift Container Platform metrics server was 
installed before you install Cloud Pak Foundation. You can verify that the server was 
installed correctly by running:
6. Check that the admission webhooks are enabled on the OpenShift Container Platform all 
master nodes:
oc get route -n default
NAME               HOST/PORT                                           PATH      SERVICES           PORT      
TERMINATION   WILDCARD
docker-registry    docker-registry-default.apps.domain.example.com              docker-registry    <all>     
passthrough   None
registry-console   registry-console-default.apps.domain.example.com             registry-console   <all>     
passthrough   None
sysctl  vm.max_map_count
vm.max_map_count = 262144
oc adm top node
NAME                            CPU(cores)   CPU%      MEMORY(bytes)   MEMORY%   
mstnode01.domain.example.com   579m         0%        4742Mi          15%       
wrknode01.domain.example.com   85m          0%        1530Mi          2%        
wrknode02.domain.example.com   147m         0%        1533Mi          2% 
cp /etc/origin/master/master-config.yaml  
/etc/origin/master/master-config.yaml.orig 
vi /etc/origin/master/master-config.yaml
admissionConfig:
   pluginConfig:
    MutatingAdmissionWebhook:
      configuration:
        apiVersion: apiserver.config.k8s.io/v1alpha1
        kubeConfigFile: /dev/null
        kind: WebhookAdmission
    ValidatingAdmissionWebhook:
      configuration:
        apiVersion: apiserver.config.k8s.io/v1alpha1
        kubeConfigFile: /dev/null
        kind: WebhookAdmission
### Restart your apiserver and controllers
/usr/local/bin/master-restart api
2
/usr/local/bin/master-restart controllers
2