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Managing Kubernetes Admission Controllers
Kubernetes admission controllers act on request by validating their parameters or modifying (i.e., mutating) them to meet certain requirements or criteria. In this hands-on lab, you will be tasked with enabling and disabling specific admission controllers in order to take advantage of the functionality they provide.
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Challenge
Enable and Disable Admission Controllers
- Modify the
kube-apiserver.yamlfile with the following updates:- Ensure that the following admission controllers are enabled:
NodeRestriction,NamespaceAutoProvision,AlwaysPullImages, andPodSecurity. - Ensure that the following admission controllers are disabled:
MutatingAdmissionWebhook,ValidatingAdmissionWebhook, andDenyServiceExternalIPs. - Save and quit the
kube-apiserver.yamlfile.
- Ensure that the following admission controllers are enabled:
- Validate that the
kube-apiserverpod redeploys successfully by issuing a simplekubectlcommand (the pod can take several seconds to redeploy).
- Modify the
What's a lab?
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