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| Section | Objectives |
|---|---|
| Networking and Ingress | - Cluster networking
|
| Security and Troubleshooting | - Security management
|
| Storage and Persistence | - Persistent storage configuration
|
| OpenShift Cluster Installation and Configuration | - Cluster setup and installation verification
|
| Cluster Administration | - Resource management
|
EX280試験問題を選択した後は、プロセス全体を主導する傾向があるため、販売後のサービスプロバイダーとして常に知られています。したがって、EX280ラーニングガイドについて悩む必要はありません。 EX280トレーニング資料は、パフォーマンスの向上とEX280試験の包括的なサービスに対する情熱を引き続き追求します。世界中のアフターセールススタッフがオンラインになり、お客様の疑問を安心させるだけでなく、すべての顧客に対する困難や不安を排除します。パズルを教えてください。一緒に考えてみましょう。
質問 # 31
Configure limits
Configure your OpenShift cluster to use limits in the bluebook project with the following requirements:
The name of the LimitRange resource is: ex280-limits
The amount of memory consumed by a single pod is between 5Mi and 300Mi The amount of memory consumed by a single container is between 5Mi and
300Mi with a default request value of 100Mi
The amount of CPU consumed by a single pod is between 10m and 500m
The amount of CPU consumed by a single container is between 10m and 500m with a default request value of
100m
正解：
解説：
See the solution below in Explanation.
Explanation:
Solution:
$ vim limit.yaml
# Edit the yaml file like below mentioned
apiVersion: "v1" kind: "LimitRange" metadata:
name: "resource-limits" spec:
limits:
- type: "Pod"
max:
cpu: "500m" memory: "300Mi"
min:
cpu: "10m" memory: "5Mi"
- type: "Container" max:
cpu: "500m" memory: "300Mi"
min:
cpu: "10m" memory: "5Mi"
defaultRequest: cpu: "100m" memory: "100Mi"
$ oc create -f limit.yaml --save-config -n bluebook
$ oc describe limitranges -n bluebook
質問 # 32
Configure groups
Configure your OpenShift cluster to meet the following requirements: The user account armstrong is a member of the commander group The user account collins is a member of the pilot group The user account aldrin is a member of the pilot group Members of the commander group have edit permission in the apollo project Members of the pilot group have view permission in the apollo project
正解：
解説：
See the solution below in Explanation.
Explanation:
Solution:
$ oc adm groups new commander
$ oc adm groups new pilot
$ oc adm groups add-users commander armstrong
$ oc adm groups add-users pilot collins
$ oc adm groups add-users pilot aldrin
$ oc adm policy add-role-to-group edit commander -n apollo
$ oc adm policy add-role-to-group view pilot -n apollo
質問 # 33
Autoscale of Pods
Task information Details:
Create an HPA for httpd with min=2 , max=9 , and CPU target 60% .
Set resource requests on the httpd deployment so autoscaling can function properly.
正解：
解説：
See the solution below in Explanation.
Explanation:
Solution:
* Set resource requests on the deployment:
oc set resources deployment httpd --requests=cpu=50m,memory=100Mi
* Create the HPA:
oc autoscale deployment httpd --min=2 --max=9 --cpu-percent=60
* Verify:
oc get hpa
oc describe hpa httpd
oc get deployment httpd -o yaml
Why resource requests matter:
* HPA CPU utilization is calculated against requested CPU.
* Without requests, percentage-based autoscaling is incomplete or invalid.
This task focuses on autoscaling prerequisites and policy creation.
質問 # 34
Create a CronJob test-cron
Task information Details:
Create service account jupiter .
Grant anyuid SCC and cluster- admin to it.
Update CronJob cron-test to use that service account.
正解：
解説：
See the solution below in Explanation.
Explanation:
Solution:
* Switch to the project hosting the cronjob, if needed:
oc project cron-test
* Create the service account:
oc create sa jupiter
* Grant anyuid:
oc adm policy add-scc-to-user anyuid -z jupiter -n cron-test
* Grant cluster-admin:
oc adm policy add-cluster-role-to-user cluster-admin system:serviceaccount:cron-test:jupiter
* Update the cronjob:
oc patch cronjob cron-test -p '{"spec":{"jobTemplate":{"spec":{"template":{"spec":{"serviceAccountName":" jupiter"}}}}}}'
* Verify:
oc get cronjob cron-test -o yaml | grep serviceAccountName
Notes:
* The uploaded lab uses oc set sa cronjob.batch/cron-test jupiter, which is not the usual command form for CronJobs. Patching the pod template is the reliable method.
This task checks service account and privilege adjustments for scheduled workloads.
質問 # 35
Start a Probe in Project Start
Task information Details:
Add a Liveness Probe to the deployment in project start using the Web Console.
正解：
解説：
See the solution below in Explanation.
Explanation:
Solution:
* Open the Web Console.
* Switch to project start .
* Navigate to: Workloads # Deployments
* Select the target deployment.
* Click the action menu and choose: Add Health Checks
* Select Liveness Probe .
* Configure the appropriate probe type:
* HTTP
* TCP
* or Command
* Enter the required endpoint or command based on the application.
* Save the configuration.
* Verify the deployment updates successfully and the pod status remains healthy.
CLI alternative if needed:
oc set probe deployment/ < deployment-name >
--liveness --get-url=http://:8080/ --initial-delay-seconds=10
This task measures health-check configuration for workload self-recovery.
質問 # 36
......
Fast2test平時では、RedHat専門試験の審査に数か月から1年かかることもありますが、EX280試験ガイドを使用すれば、試験の前に20〜30時間かけて復習し、EX280学習教材を使用すれば、 EX280学習資料にはすべての重要なテストポイントが既に含まれているため、他のレビュー資料は不要になります。 同時に、EX280学習教材は、復習するためのまったく新しい学習方法を提供します-演習の過程で知識を習得しましょう。 Red Hat Certified Specialist in OpenShift Administration exam試験に簡単かつゆっくりと合格します。
EX280日本語資格取得: https://jp.fast2test.com/EX280-premium-file.html