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CKADApplication Environment, Configuration and SecuritySingle nodeMedium

Pod and container SecurityContext

Scenario ckad-env-002 · about 7 minutes · 11 points · 11 grader checks

Run a Pod as a non-root user with a read-only root filesystem, no privilege escalation and no capabilities.

  • securitycontext
  • runasnonroot
  • capabilities
  • readonlyrootfilesystem
  • pod

What you will practise

  • Set pod-level runAsUser, runAsGroup, fsGroup and runAsNonRoot
  • Set container-level allowPrivilegeEscalation and readOnlyRootFilesystem
  • Drop Linux capabilities

Start this lab

With the CLI installed and signed in, this command provisions a single node cluster on your Mac, applies the scenario setup and prints the task below.

goldenkube start ckad-env-002

Task

The task text exactly as the CLI shows it. Solve it on the cluster, then run goldenkube submit.

In namespace "secure-app" (create it if it does not exist) create a Pod named "hardened" with one container "app", image busybox:1.36, command "sleep 3600", that runs with these security settings: Pod level: - run as user ID 1000 and group ID 3000 - files of mounted volumes belong to group 2000 (fsGroup) - the Pod must refuse to run as root (runAsNonRoot) Container "app": - no privilege escalation - read-only root filesystem - drop ALL Linux capabilities The Pod must be Running.

Requirements and details

Certification
CKAD · Certified Kubernetes Application Developer
Domain
Application Environment, Configuration and Security
Difficulty
Medium
Cluster topology
Single node
Cluster features
None beyond the base cluster
Recommended time
7 minutes
Points
11
Grader checks
11
Kubernetes version
1.37
Minimum CLI version
0.1.0
Scenario version
1
Published

Grading runs locally: 11 state checks read your cluster when you submit; the scenario passes when every check passes. Hints, the reference solution and the check definitions are available only inside the CLI, not on this page.

Install the CLICreate a free account

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