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CL-309 Cloud & Platform

Policy as Code with OPA Gatekeeper

Enforce organisational rules at admission time: Rego fundamentals, Gatekeeper constraint templates, audit vs enforce modes, and policy testing — learners write and ship policies that block real misconfigurations (unlabeled resources, privileged pods, forbidden registries) with helpful denial messages.

B4Professional
5modules
32skill atoms
2role journeys
Curriculum

What this course covers.

5 modules, 32 named skill atoms. Expand any module to see them.

1Admission Control Model6 skill atoms
webhooksconstraint lifecyclevalidating vs mutating admissionfailurePolicy Fail vs Ignore riskkube-system namespace exclusionswebhook latency & timeout budget
2Rego Essentials7 skill atoms
rulesdataunit-testing policiesdeny rule shape & violation messagescomprehensions and iterationinput.review.object traversalopa test with fixtures
3Constraint Templates6 skill atoms
parameterised policieslibrary reuseCRD generated per templateparameter schema validationmatch by kind, namespace & labelreferential constraints with sync config
4Rollout Strategy7 skill atoms
audit-firstexemptionsnoisy-policy tuningdryrun enforcementActionreviewing audit violations before enforcetime-bounded exemptionsviolation trend tracking
5Policy Pack Lab6 skill atoms
3 production policies shipped with testsblock privileged & hostPath podsrequire owner and cost-center labelsallowed registry listenforce resource requests & limitsactionable denial messages
Where it fits

CL-309 in the role journeys.

This course appears in 2 of our 45 role journeys. Here is what a learner takes immediately before and after it in each.

Platform / DevOps Engineer

Professional stage
CL-308CL-309CL-310

DevSecOps Engineer

Professional stage
SEC-210CL-309SEC-206

Roles this course serves

The capability ladder

This course is authored to band B4.

Every course we run is written to one rung of the CASI ladder, so a plan can be assembled to take a team from where they are to where they need to be.

What do B1–B6 mean?The CASI Capability Ladder — click to expand

Every course targets a band on the CASI Capability Ladder — our six-band proficiency scale, anchored to open standards (O*NET, ESCO, NICE, NIST AI RMF, Bloom's). A band tells you how deep a course goes, and what evidence proves it.

What the learner can doTypical evidence
B1
AwareUnderstands concepts and vocabulary; uses tools with guidance
Knowledge checks
B2
FoundationPerforms standard tasks correctly in familiar contexts
Guided labs, autograded exercises
B3
PractitionerDelivers complete pieces of work independently
Scenario labs, proctored hands-on exams
B4
ProfessionalHandles production-grade complexity, trade-offs and failure modes
Break-fix drills, design defenses
B5
AdvancedEngineers systems end-to-end under constraints; leads others
Rubric-scored capstones, vivas
B6
ExpertSets direction; recognised authority across teams
Portfolio + panel evaluation

A note on B6. Courses in this catalog target B1–B5. B6 is not taught — it is recognised, through a portfolio and a panel, once someone is setting direction for others. Every journey here is built to land a learner at B5.

Next step

Run CL-309 for your team.

This course runs at several lengths depending on how deep you need to go and how much of it your people already have. Tell us who is being trained and we will scope it.

Add it to a training plan Talk to our team Check your team’s level free