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Changelog History
Page 13

  • v20.4.5 Changes

    🚀 This edge release includes several new CLI commands for use with multi-cluster gateways, and adds liveness checks and metrics for gateways. Additionally, it 👉 makes the proxy's gRPC error-handling behavior more consistent with other 💻 implementations, and includes a fix for a bug in the web UI.

    • CLI
      • Added linkerd cluster setup-remote command for setting up a multi-cluster gateway
      • Added linkerd cluster gateways command to display stats for multi-cluster gateways
      • Changed linkerd cluster export-service to modify a provided YAML file and output it, rather than mutating the cluster
    • Controller
      • Added liveness checks and Prometheus metrics for multi-cluster gateways
      • Changed the proxy injector to configure proxies to do destination lookups for IPs in the private IP range
    • 💻 Web UI
      • Fixed errors when viewing resource detail pages
    • Internal
      • Created script and config to build a Linkerd CLI Chocolatey package for Windows users, which will be published with stable releases (thanks to @drholmie!)
    • Proxy
      • Changed the proxy to set a grpc-status: UNAVAILABLE trailer when a gRPC response stream is interrupted by a transport error

  • v20.4.4 Changes

    🚀 This edge release fixes a packaging issue in edge-20.4.3.

    🚀 From edge.20.4.3 release notes:

    🚀 This edge release adds functionality to the CLI to output more detail and 👍 includes changes which support the multi-cluster functionality. Also, the helm 👌 support has been expanded to make installation more configurable. Finally, the HA reliability is improved by ensuring that control plane pods are restarted with a rolling strategy

    • CLI
      • Added output to the linkerd check --proxy command to list all data plane pods which are not up-to-date rather than just printing the first one it encounters
      • Added a --proxy flag to the linkerd version command which lists all proxy versions running in the cluster and the number of pods running each version
      • Lifted requirement of using --unmeshed for linkerd stat when querying TrafficSplit resources
      • Added support for multi-stage installs with Add-Ons
    • Controller
      • Added a rolling update strategy to Linkerd deployments that have multiple replicas during HA deployments to ensure that at most one pod begins terminating before a new pod ready is ready
      • Added a new label for the proxy injector to write to the template, linkerd.io/workload-ns which indicates the namespace of the workload/pod
    • Internal
    • Helm
      • Changed charts to use downwardAPI to mount labels to the proxy container making them easier to identify
    • Proxy
      • Changed the Linkerd proxy endpoint for liveness to use the new /live admin endpoint instead of the /metrics endpoint, because the /live endpoint returns a smaller payload
      • Added a per-endpoint authority-override feature to support multi-cluster gateways

  • v20.4.3 Changes

    🚀 This release is superseded by edge-20.4.4

    🚀 This edge release adds functionality to the CLI to output more detail and 👍 includes changes which support the multi-cluster functionality. Also, the helm 👌 support has been expanded to make installation more configurable. Finally, the HA reliability is improved by ensuring that control plane pods are restarted with a rolling strategy

    • CLI
      • Added output to the linkerd check --proxy command to list all data plane pods which are not up-to-date rather than just printing the first one it encounters
      • Added a --proxy flag to the linkerd version command which lists all proxy versions running in the cluster and the number of pods running each version
      • Lifted requirement of using --unmeshed for linkerd stat when querying TrafficSplit resources
      • Added support for multi-stage installs with Add-Ons
    • Controller
      • Added a rolling update strategy to Linkerd deployments that have multiple replicas during HA deployments to ensure that at most one pod begins terminating before a new pod ready is ready
      • Added a new label for the proxy injector to write to the template, linkerd.io/workload-ns which indicates the namespace of the workload/pod
    • Internal
    • Helm
      • Changed charts to use downwardAPI to mount labels to the proxy container making them easier to identify
    • Proxy
      • Changed the Linkerd proxy endpoint for liveness to use the new /live admin endpoint instead of the /metrics endpoint, because the /live endpoint returns a smaller payload
      • Added a per-endpoint authority-override feature to support multi-cluster gateways

  • v20.4.2 Changes

    🚀 This release brings a number of CLI fixes and Controller improvements.

    • CLI
      • Fixed a bug that caused pods to crash after upgrade if --skip-outbound-ports or --skip-inbound-ports were used
      • Added unmeshed flag to the stat command, such that unmeshed resources are only displayed if the user opts-in
      • Added a --smi-metrics flag to install, to allow installation of the experimental linkerd-smi-metrics component
      • Fixed a bug in linkerd stat, causing incorrect output formatting when using the --o wide flag
      • Fixed a bug, causing linkerd uninstall to fail when attempting to delete PSPs
    • Controller
      • Improved the anti-affinity of linkerd-smi-metrics deployment to avoid pod scheduling problems during upgrade
      • Improved endpoints change detection in the linkerd-destination service, enabling mirrored remote services to change cluster gateways
      • Added operationID field to tap OpenAPI response to prevent issues during upgrade from 2.6 to 2.7
    • Proxy
      • Added a new protocol detection timeout to prevent clients from consuming resources indefinitely when not sending any data

  • v20.4.1 Changes

    🚀 This release introduces some cool new functionalities, all provided by our 🛠 awesome community of contributors! Also two bugs were fixed that were introduced since edge-20.3.2.

    • CLI
      • Added linkerd uninstall command to uninstall the control plane (thanks @Matei207!)
      • Fixed a bug causing linkerd routes -o wide to not show the proper actual success rate
    • Controller
      • Fail proxy injection if the pod spec has automountServiceAccountToken disabled (thanks @mayankshah1607!)
    • 💻 Web UI
      • Added a route dashboard to Grafana (thanks @lundbird!)
    • Proxy
      • Fixed a bug causing the proxy's inbound to spuriously return 503 timeouts

  • v20.3.4 Changes

    🚀 This release introduces several fixes and improvements to the CLI.

    • CLI
      • Added support for kubectl-style label selectors in many CLI commands (thanks @mayankshah1607!)
      • Fixed the path regex in service profiles generated from proto files without a package name (thanks @amariampolskiy!)
      • Fixed an error when injecting Cronjobs that have no metadata
      • Relaxed the clock skew check to match the default node heartbeat interval on Kubernetes 1.17 and made this check a warning
      • Fixed a bug where the linkerd-smi-metrics pod could not be created on clusters with pod security policy enabled
    • Internal
      • Upgraded tracing components to more recent versions and improved resource defaults (thanks @Pothulapati!)

  • v20.3.3 Changes

    🚀 This release introduces new experimental CLI commands for querying metrics 👍 using the Service Mesh Interface (SMI) and for multi-cluster support via service mirroring.

    If you would like to learn more about service mirroring or SMI, or are interested in experimenting with these features, please join us in Linkerd Slack for help and feedback.

    • CLI
      • Added experimental linkerd cluster commands for managing multi-cluster service mirroring
      • Added the experimental linkerd alpha clients command, which uses the smi-metrics API to display client-side metrics from each of a resource's clients
      • Added retries to some linkerd check checks to prevent spurious failures when run immediately after cluster creation or Linkerd installation

  • v20.3.2 Changes

    🚀 This release introduces substantial proxy improvements as well as new 🔒 observability and security functionality.

    • CLI
      • Added the linkerd alpha stat command, which uses the smi-metrics API; the latter enables access to metrics to be controlled with RBAC
    • Controller
      • Added support for configuring service profile timeouts (x-linkerd-timeout) via OpenAPI spec (thanks @lewiscowper!)
    • 💻 Web UI
      • Improved the Grafana dashboards to use a globing operator for Prometheus in order to avoid producing queries that are too large (thanks @mmiller1!)
    • Helm
      • Improved the linkerd2 chart README (thanks @lundbird!)
    • Proxy
      • Fixed a bug that could cause log levels to be processed incorrectly

  • v20.3.1 Changes

    🚀 This release introduces new functionality mainly focused around observability 👍 and multi-cluster support via service mirroring.

    If you would like to learn more about service mirroring or are interested in experimenting with this feature, please join us in Linkerd Slack for help and feedback.

    • CLI
      • Improved the linkerd check command to check for extension server certificate (thanks @christyjacob4!)
    • Controller
      • Removed restrictions preventing Linkerd from injecting proxies into Contour (thanks @alfatraining!)
      • Added an experimental version of a service mirroring controller, allowing discovery of services on remote clusters.
    • 💻 Web UI
      • Fixed a bug causing incorrect Grafana links to be rendered in the web dashboard.
    • Proxy
      • Fixed a bug that could cause the proxy's load balancer to stop processing updates from service discovery.

  • v20.2.3 Changes

    🚀 This release introduces the first optional add-on tracing, added through the 🆕 new add-on model!

    The existing optional tracing components Jaeger and OpenCensus can now be installed as add-on components.

    There will be more information to come about the new add-on model, but please refer to the details of #3955 for how to get started.

    • CLI
      • Added the linkerd diagnostics command to get metrics only from the control plane, excluding metrics from the data plane proxies (thanks @srv-twry!)
      • Added the linkerd install --prometheus-image option for installing a custom Prometheus image (thanks @christyjacob4!)
      • Fixed an issue with linkerd upgrade where changes to the Namespace object were ignored (thanks @supra08!)
    • Controller
      • Added the tracing add-on which installs Jaeger and OpenCensus as add-on components (thanks @Pothulapati!!)
    • Proxy
      • Increased the inbound router's default capacity from 100 to 10k to accommodate environments that have a high cardinality of virtual hosts served by a single pod
    • 💻 Web UI
      • Fixed styling in the CallToAction banner (thanks @aliariff!)