EX432 Exam Dumps - Red Hat Certified Specialist in OpenShift Advanced Cluster Management

Label clusters for prod:

oc label managedcluster cluster-prod1 environment=prod --overwrite

oc label managedcluster cluster-prod2 environment=prod --overwrite

Create Placement with numberOfClusters: 2:

cat < < 'EOF' | oc apply -f -

apiVersion: cluster.open-cluster-management.io/v1beta1

kind: Placement

metadata:

name: prod-two-clusters

namespace: team-prod

spec:

numberOfClusters: 2

predicates:

- requiredClusterSelector:

labelSelector:

matchLabels:

environment: prod

EOF

Validate placement decisions:

oc get placementdecision -n team-prod

In ACM console: Governance → Create policy → ETCD Encryption template and set to enforce .

Target clusters via Placement.

Confirm policy status: Compliant / NonCompliant per cluster.

Create a group (example) and add users:

oc adm groups new dev-team

oc adm groups add-users dev-team user1 user2

Grant namespace access:

oc adm policy add-role-to-group edit dev-team -n team-dev

Validate with a user token/login (or check rolebindings):

oc get rolebinding -n team-dev | grep dev-team

Why this matters:

ACM access patterns commonly combine namespace RBAC + ClusterSetBinding to scope what teams can manage.

Bind the ClusterSet into the application namespace using ManagedClusterSetBinding.

Create Placement in that namespace selecting the desired clusters.

Deploy application resources tied to that placement (Subscription or GitOps pattern). Why this matters: This is the standard multi-tenant ACM pattern for teams.

Check cluster conditions:

oc describe managedcluster cluster-dev

Check agent namespaces and pods on the managed cluster (common namespace names depend on deployment, but you’re looking for ACM/klusterlet agents).

On hub, check managedclusteraddons and addon health:

oc get managedclusteraddon -n cluster-dev

oc describe managedclusteraddon -n cluster-dev < addon-name >

Typical fixes: missing pull secret, network/DNS issues, CSR approval issues, etc. (Exam expects you to identify from events/conditions).