Mock Exam

Helm Mock Exam Scenarios & Fast Solutions¶

Scenario 1 – Basic Install¶

Question: Install the nginx chart from Bitnami repo as release web in namespace app-ns. If the namespace does not exist, create it.

Solution:

helm repo add bitnami https://charts.bitnami.com/bitnami && helm repo update
helm install web bitnami/nginx -n app-ns --create-namespace

Scenario 2 – Install Specific Version¶

Question: Install version 15.0.2 of nginx chart from Bitnami repo as ngapp in default namespace.

Solution:

helm install ngapp bitnami/nginx --version 15.0.2

Scenario 3 – Custom Values from File¶

Question: Install the mysql chart from Bitnami repo with settings from /root/custom-mysql.yaml as release db.

Solution:

helm install db bitnami/mysql -f /root/custom-mysql.yaml

Scenario 4 – Quick Value Override¶

Question: Install nginx chart with exactly 4 replicas, without editing any files. Release name: fastweb.

Solution:

helm install fastweb bitnami/nginx --set replicaCount=4

Scenario 5 – Upgrade Existing Release¶

Question: Upgrade the release web with new values from /root/web-update.yaml.

Solution:

helm upgrade web bitnami/nginx -f /root/web-update.yaml

Scenario 6 – Rollback¶

Question: Roll back release db to revision 1.

Solution:

helm rollback db 1

Scenario 7 – Pull & Install Locally¶

Question: Download nginx chart from Bitnami repo, extract it, and install from local folder with release name localweb.

Solution:

helm pull bitnami/nginx --untar
helm install localweb ./nginx

Scenario 8 – Search for Chart¶

Question: Find a chart with wordpress in its name from all configured repos.

Solution:

helm search repo wordpress

Scenario 9 – List Releases in All Namespaces¶

Question: Show all Helm releases in all namespaces.

Solution:

helm list -A

Scenario 10 – Uninstall¶

Question: Remove release fastweb from default namespace.

Solution:

helm uninstall fastweb

Scenario 11 – Namespace-Specific Install¶

Question: Install nginx into namespace exam-ns without creating it. Namespace already exists.

Solution:

helm install testng bitnami/nginx -n exam-ns

Scenario 12 – Multiple Values Override¶

Question: Install nginx with replicas=3 and service type=NodePort, overriding values from two files: /root/base.yaml and /root/extra.yaml.

Solution:

helm install myng bitnami/nginx \
-f /root/base.yaml \
-f /root/extra.yaml \
--set replicaCount=3,service.type=NodePort

Scenario 13 – Dry Run Install¶

Question: Preview the YAML output of installing redis without actually installing it.

Solution:

helm install testredis bitnami/redis --dry-run --debug

Scenario 14 – Find Chart Version¶

Question: List all available versions of the nginx chart from Bitnami repo.

Solution:

helm search repo bitnami/nginx --versions

Scenario 15 – Show Installed Chart’s Values¶

Question: Display all effective values of the installed release web.

Solution:

helm get values web -a