Added

• Add chart options to secure the connection between Metrics Server and the Kubernetes API Server. (#1288) @mkilchhofer
• Add unhealthyPodEvictionPolicy to the Metrics Server PDB as a user enabled feature. (#1574) @peterabarr

Changed

• Update the Addon Resizer OCI image to 1.8.23. (#1626) @stevehipwell
• Update the Metrics Server OCI image to 0.8.0. (#1683) @stevehipwell

Installation

kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.8.0/components.yaml

Changes since v0.7.2

Improvements

• Wire server run options to flags #1560 #1656 (@benluddy, @slashpai)
• Bump Golang to v1.24.4 and to Kubernetes clients to v0.33.2 #1662, #1665 (@dgrisonnet,@yangjunmyfm192085,@slashpai)
  • This will help to include the disable-http2-serving flag added in SecureServingOptions (kubernetes/kubernetes#122176) for metrics-server
• Bump Prometheus module to v0.304.2 #1652, #1675 (@slashpai , @dependabot)

Tooling

• Add support for specifying other container engines #1649 (@slashpai)

Installation

kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.7.2/components.yaml

Changes since v0.7.1

Improvements

• Update Golang to v1.22.5 and Kubernetes dependencies to v1.29.8

Installation

kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.7.1/components.yaml

Changes since v0.7.0

Improvements

• Update Golang to v1.21.8 and Kubernetes dependencies to v1.29.2

Fixes

• Fixed a bug causing kubectl get PodMetrics/NodeMetrics to fail

Installation

kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.7.0/components.yaml

Changes since v0.6.4

Logging flags that are klog specific (--log-dir, --log-file, --logtostderr, --alsologtostderr, --one-output, --stderrthreshold, --log-file-max-size, --skip-log-headers, --add-dir-header, --skip-headers, --log-backtrace-at) were deprecated in v0.6.1 and are now removed.

Improvements

• Support producing logs in JSON format (@yangjunmyfm192085)
• Introduce --kubelet-request-timeout CLI flag to customize the timeout of requests to kubelet (@yangjunmyfm192085)
• Add the ability to exclude nodes by labels via the --node-selector flag (@yangjunmyfm192085)
• Disable DWARF generation when compiling the binary to reduce its size (@mattmoor)
• Support modifying the metric collection path on nodes via the metrics.k8s.io/resource-metrics-path annotation on the nodes (@wzshiming)
• Add release binaries to the Github release artifacts (@wzshiming)
• Bump Golang to v1.21.6 and Kubernetes clients to v0.29.0

Optimizations

• Remove redundant informer startup (@yangjunmyfm192085)

Fixes

• Handle malformed metrics from Kubelet (@XiaoXiaoSN)
• Handle Kernel bug leading to incorrect CPU usage data (@sleepyzhang)

Tests

• Add fuzzing testing (@yangjunmyfm192085)
• Add resource usage tests (@yangjunmyfm192085)
• Add tests for sidecar containers (@yangjunmyfm192085)
• Configure e2e tests to be arm & darwin compatible (@josh-ferrell)
• Test against Kubernetes 1.27, 1.28, 1.29 (@yangjunmyfm192085)

Manifests

• Migrate to a base-components-overlays structure (@maxbrunet)
• Update PodDisruptionBudget to policy/v1 (@yangjunmyfm192085)
• Add version-specific HA manifests (@dgrisonnet)
• Permit running metrics-server under PodSecurity restricted (@jcpunk)
• Update autoscaling configuration to follow README recommendation (@serathius)
• Add containerSecurityContext for addonResizer (@the-technat)

Documentations

• Add new scenarios to the KNOWN_ISSUES (@serathius, @maxmetalm, @yangjunmyfm192085)
• Document CLI flags (@serathius)
• Document metrics-server's network requirements (@yangjunmyfm192085, @serathius)
• Improve high-availability guidelines (@sherifabdlnaby)

Metrics Server is a scalable, efficient source of container resource metrics for Kubernetes built-in autoscaling pipelines.

Installation

kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.6.4/components.yaml

Changes since v0.6.3

Improvements

• Update golang to 1.19.11 (#1293, @dgrisonnet)