EX432認定試験について、あなたはどうやって思っているのですか。非常に人気があるRedHatの認定試験の一つとして、この試験も大切です。しかし、試験の準備をよりよくできるために試験参考書を探しているときに、優秀な参考資料を見つけるのはたいへん難しいことがわかります。では、どうしたらいいでしょうか。大丈夫ですよ。Tech4Examはあなたの望みを察して、受験生の皆さんの要望にこたえるために、一番良い試験EX432問題集を提供してあげます。
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Manage Cluster Lifecycle | 30% | - Manage cluster infrastructure and updates - Configure cluster imports and managed clusters - Deploy cluster configurations with PolicyGenerator and Placement - Provision and configure clusters using ACM |
| Topic 2: Cluster Monitoring and Troubleshooting | 20% | - Analyze logs and metrics across clusters - Troubleshoot cluster connectivity issues - Configure monitoring and alerting - Use observability stack for diagnostics |
| Topic 3: Application Management at Scale | 30% | - Configure application lifecycle policies - Manage application subscriptions and placement - Use ApplicationSet for automated deployment - Deploy applications using GitOps with ArgoCD |
| Topic 4: Policy-Based Governance | 20% | - Manage policy templates and conditions - Create and apply governance policies - Configure policy compliance and remediation |
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質問 # 36
Create a Governance Policy to ensure a namespace exists on selected clusters
正解：
解説：
See the solution below in Explanation.
Explanation:
Policies in ACM require:
* a Policy resource
* a Placement (which clusters to target)
* a PlacementBinding (bind policy # placement)
* Create the Policy (in team-dev) enforcing a namespace audit-logs:
cat < < 'EOF' | oc apply -f -
apiVersion: policy.open-cluster-management.io/v1
kind: Policy
metadata:
name: policy-ensure-audit-namespace
namespace: team-dev
spec:
remediationAction: enforce
disabled: false
policy-templates:
- objectDefinition:
apiVersion: policy.open-cluster-management.io/v1
kind: ConfigurationPolicy
metadata:
name: ensure-audit-namespace
spec:
remediationAction: enforce
severity: low
object-templates:
- complianceType: musthave
objectDefinition:
apiVersion: v1
kind: Namespace
metadata:
name: audit-logs
EOF
* Create PlacementBinding to bind it to dev-clusters placement:
cat < < 'EOF' | oc apply -f -
apiVersion: policy.open-cluster-management.io/v1
kind: PlacementBinding
metadata:
name: bind-policy-ensure-audit-namespace
namespace: team-dev
placementRef:
apiGroup: cluster.open-cluster-management.io
kind: Placement
name: dev-clusters
subjects:
- apiGroup: policy.open-cluster-management.io
kind: Policy
name: policy-ensure-audit-namespace
EOF
* Verify compliance:
oc get policy -n team-dev
oc describe policy policy-ensure-audit-namespace -n team-dev
Why this matters:
This is the core "ACM governance" exam pattern: define desired state and enforce across clusters.
質問 # 37
Deploy an application using Subscription + PlacementRule (legacy model)
正解：
解説：
See the solution below in Explanation.
Explanation:
* Create a Channel (Git) and Subscription referencing it (example pattern).
* In exams, you're usually given a repo URL and target namespace.
* Ensure there is a placement rule/placement selecting clusters.
* Apply manifests:
oc apply -f channel.yaml
oc apply -f subscription.yaml
* Verify resources:
oc get channels.apps.open-cluster-management.io -A
oc get subscriptions.apps.open-cluster-management.io -A
oc get application.app.k8s.io -A
Why this matters:
Multi-cluster application lifecycle is part of ACM operations, and EX480 explicitly covers managing multi- cluster environments with ACM.
質問 # 38
Label managed clusters for placement (environment=dev, region=us-east)
正解：
解説：
See the solution below in Explanation.
Explanation:
* List clusters:
oc get managedcluster
* Label the target cluster(s):
oc label managedcluster cluster-dev environment=dev region=us-east --overwrite
* Verify labels:
oc get managedcluster cluster-dev --show-labels
Why this matters:
Labels drive Placement decisions used by policies and applications.
質問 # 39
Detach (unimport) a managed cluster safely from the hub
正解：
解説：
See the solution below in Explanation.
Explanation:
* Identify the managed cluster:
oc get managedcluster
* If required in your environment, remove dependent placements/policies/apps targeting it (exam often expects you to check "why deletion stuck").
* Delete managed cluster:
oc delete managedcluster cluster-dev
* Watch finalizers and cleanup:
oc get managedcluster cluster-dev -o yaml | grep finalizers -n
Why this matters:
Proper lifecycle operations (import/manage/detach) is core EX432/EX480 scope.
質問 # 40
Configure Observability (MultiClusterObservability) with object storage credentials
正解：
解説：
See the solution below in Explanation.
Explanation:
* Create the object storage secret (you'll be given endpoint/access keys in an exam):
oc -n open-cluster-management-observability create secret generic thanos-object-storage \
--from-file=thanos.yaml=/path/to/thanos.yaml
* Create or edit MultiClusterObservability CR to enable observability (storage class, retention, etc.).
* Verify observability pods in the observability namespace and check dashboards/metrics. Why this matters: Monitoring health/performance with ACM observability is a common learning objective in ACM training.
質問 # 41
......
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