Key features
- YAML-based policy authoring — APAC admission control policies in Kubernetes-native YAML without Rego
- Validate rules — enforce APAC security baselines (resource limits, registry allowlists, pod security standards)
- Mutate rules — auto-inject APAC sidecar containers, labels, and security contexts into admitting resources
- Image verification — validate APAC container image Cosign/Sigstore signatures before Kubernetes admission
- Generate rules — auto-create NetworkPolicy, ResourceQuota, ConfigMap on APAC namespace creation
- Policy Reports — Kubernetes-native CRD results showing APAC policy compliance state across all resources
- CLI mode — validate APAC YAML manifests and Helm chart outputs against policies in CI/CD pipelines
Best for
- APAC platform engineering teams implementing Kubernetes security governance across multiple development teams who need to enforce security baselines (no root containers, resource limits, approved registries) without requiring every APAC team to learn Kubernetes security configuration
- APAC DevSecOps teams implementing software supply chain security — Kyverno's image verification policies enforce Cosign/Sigstore image signing verification at the APAC Kubernetes admission level, blocking unsigned images from APAC production clusters
- APAC platform engineering teams managing multi-tenant Kubernetes clusters where namespace isolation standards (NetworkPolicy, ResourceQuota) must be consistently applied — Kyverno generation policies auto-create isolation resources on namespace creation
- APAC organisations replacing Open Policy Agent Gatekeeper with a lower-learning-curve alternative — Kyverno provides equivalent Kubernetes admission control capability with YAML policies instead of Rego for APAC teams without OPA expertise
Limitations to know
- ! Policy complexity at scale — Kyverno policies are expressive in YAML but complex multi-condition policies with JMESPath expressions can become hard to maintain; APAC platform teams should invest in policy testing (Kyverno CLI + Chainsaw) before deploying complex APAC policies to production
- ! Performance at high admission rate — Kyverno's webhook processes every Kubernetes admission request; APAC clusters with high pod churn (batch workloads, frequent pod restarts) should benchmark Kyverno webhook latency impact on APAC API server response time
- ! Policy conflict management — when multiple Kyverno policies apply to the same APAC resource, policy evaluation order and conflict resolution can produce unexpected behaviour; APAC platform teams should test policy interactions systematically
- ! Mutating webhook trust model — Kyverno mutation webhooks modify APAC resources before admission; APAC security teams should audit Kyverno mutation policies carefully, as a misconfigured mutation policy can silently modify APAC production resources in unintended ways
About Kyverno
Kyverno is a CNCF open-source Kubernetes-native policy engine that enables APAC platform engineering and security teams to enforce, mutate, and generate Kubernetes resources using YAML-based policies without learning Rego (the Open Policy Agent policy language) — providing Kubernetes admission control policy authoring in the same YAML syntax that APAC platform engineers use for Kubernetes manifests, lowering the barrier for APAC teams to implement policy-as-code governance across APAC Kubernetes clusters.
Kyverno's validation policies — where APAC platform engineering teams define ClusterPolicy resources specifying conditions that Kubernetes resources must satisfy before admission (container images must be from approved APAC registries, pods must have CPU and memory resource limits, containers must not run as root, ingress resources must reference existing TLS secrets) — enable APAC security teams to implement Kubernetes admission guardrails that enforce APAC security baselines across all APAC development teams' deployments without requiring individual teams to understand Kubernetes security configuration.
Kyverno's mutation policies — where APAC platform engineering teams define policies that automatically modify incoming Kubernetes resources before admission (adding standard APAC labels to all pods, injecting sidecar containers into matching deployments, setting default resource limits on containers that omit them, adding security context configurations) — enable APAC platform teams to implement platform defaults that apply to all APAC application deployments without requiring individual APAC development teams to include boilerplate security configuration in every service manifest.
Kyverno's image verification policies — where APAC DevSecOps teams define policies requiring that container images are signed with a specific Cosign key or Sigstore keyless signature before Kubernetes admission — enable APAC platform engineering teams to implement software supply chain security where only images that have been signed by the APAC build pipeline are admitted to production Kubernetes clusters, blocking unsigned or tampered APAC container images at the admission controller level before they can run.
Kyverno's generation policies — where APAC platform teams define policies that automatically create Kubernetes resources (NetworkPolicy, ResourceQuota, LimitRange, ConfigMap) whenever matching resources are created (for example, creating a default NetworkPolicy whenever a new Namespace is created) — enable APAC platform engineering teams to ensure that APAC application namespaces always have required security and governance resources applied without requiring APAC application teams to create these resources manually or through separate automation.
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