Kyverno configures its resource webhooks by default (but configurable) in fail closed mode. Regardless of the installation method used for Kyverno, it is important to understand the risks associated with any webhook and how it may impact cluster operations and security especially in production environments. Security vs Operabilityįor a production installation, Kyverno should be installed in high availability mode. Refer to the Release Compatibility Matrix for the Enterprise Kyverno here or contact Nirmata support for assistance. NOTE: The Enterprise Kyverno by Nirmata supports a wide range of Kubernetes versions for any Kyverno version. * Due to a known issue with Kubernetes 1.23.0-1.23.2, support for 1.23 begins at 1.23.3. The below table shows the compatibility matrix. Kyverno also follows a similar strategy for support of Kubernetes itself. Although previous versions may work, they are not tested and therefore no guarantees are made as to their full compatibility. Kyverno follows the same support policy as the Kubernetes project which is an N-2 policy in with the three latest minor releases are maintained. CRDs which define the custom resources corresponding to policies, reports, and their intermediary resources.MutatingWebhookConfigurations for receiving both policy and resource mutating requests.ValidatingWebhookConfigurations for receiving both policy and resource validation requests.Roles and ClusterRoles, Bindings and ClusterRoleBindings authorizing the various ServiceAccounts to act on the resources in their scope.Secrets for webhook registration and authentication with the API server.ConfigMap for holding the metrics configuration.ConfigMap for holding the main Kyverno configuration.One ServiceAccount per controller to segregate and confine the permissions needed for each controller to operate on the resources for which it is responsible.Services needed for monitoring of metrics.Services needed to receive webhook requests.Cleanup controller (optional): The component responsible for processing of Cleanup Policies.
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