kubernetes-sigs/metrics-server
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  • v0.4.0 42ae895f21

    v0.4.0 Stable

    serathius released this 2020-11-04 21:20:53 +00:00 | 1103 commits to master since this release

    Installation

    kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.4.0/components.yaml

    Breaking changes

    Manifests

    • Metrics Server will use Kubelet IP addresses instead of DNS
    • Deployment manifests are no longer located in deploy folder, but in manifest using Kustomize
    • Metrics server will now run with system-cluster-critical pod priority meaning it can evict workloads with lower priority
    • Renamed Pod port to https
    • Removed kubernetes.io/name & kubernetes.io/cluster-service labels from Service

    Container image

    • Removed /healthz endpoint
    • Some combinations of TLS flags are no longer allowed
    • Metric metrics_server_kubelet_summary_request_duration_seconds was renamed to metrics_server_kubelet_request_duration_seconds
    • Metric metrics_sever_kubelet_summary_scrapes_total was renamed to metrics_server_kubelet_request_total
    • Metric metrics_server_scraper_last_time_seconds was renamed to metrics_server_kubelet_last_request_time_seconds
    • Metric metrics_server_scraper_duration_seconds was deleted
    • Metric metrics_server_kubelet_last_request_time_seconds had it label source renamed to node

    Changes since 0.3.7

    New Features

    • Detect Kubelet port based on node status (@Poor12)
    • Allow passing TLS certificate&key to kubelet client (@uthark)
    • Added mmanifests configured with autoscaling (@serathius)
    • Adopt Kustomize for manifests (@serathius)
    • Implement server-side api output formatting (@smarterclayton)
    • Order pods returned by API (@smarterclayton)
    • Add pod disruption budget (@brianpursley)
    • TLS flag validation (@AkashSarda)

    Reliability

    • Add properly designed readiness and liveliness probes and endpoints /livez and /readyz (@serathius, @hanumanthan)
    • Set pod priority to system-cluster-critical (@serathius)

    Optimizations

    • Skip parsing not used fields in Summary API (@serathius)
    • Use easyjson for parsing (@serathius)
    • Pool buffer for scraping (@serathius)

    Clean ups

    • Removed spammy no metrics known for pod logs (@serathius)
    • Named Service port https (@elmariofredo)
    • Rename pod port to https (@serathius)
    • Removed KubeUp labels (@serathius)
    • Add copyright license headers verification (@dgrisonnet)
    • Refactor of kubelet metrics (@serathius)
    • Update golang version to 1.14 (@serathius)
    • Update dependencies to kubernetes 1.19 (@serathius)

    Tests

    • Test k8s 1.19 in e2e tests (@serathius)

    Documentation

    • Document x509 errors in FAQ (@QianChenglong)
    • REAME.md typo fixes (@zhiweiv)

    Thanks to everyone who contributed to this release!

    Downloads