Kubernetes Admission Controllers: What They Are and Why They Matter

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Kubernetes Server Applications Etcd policy-management Raft

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  • Kyverno

    Kubernetes Native Policy Management

    Several other policy frameworks for Kubernetes exist. A newer alternative to OPA is jsPolicy, an open source policy framework maintained by the team at Loft Labs. jsPolicy allows you to write policies using JavaScript or TypeScript. Other options include Kyverno and Kubewarden.

  • etcd

    Distributed reliable key-value store for the most critical data of a distributed system

    As mentioned earlier, admission controllers intercept API server requests before they’re executed or persisted in etcd. This makes them a perfect contender to apply security measures to help organizations meet policy requirements. Admission controllers can improve the security of Kubernetes workloads through a built-in PodSecurityPolicy (PSP), which mounts the root file system as read-only and prevents the containers from running as the root user.

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

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