2024-07 Edge Release Roundup

Signed-off-by: Flynn <[email protected]>

linkerd.io/content/blog/2024/0701-edge-release-roundup.md

@@ -0,0 +1,171 @@
+---
+author: 'flynn'
+date: 2024-06-06T00:00:00Z
+title: |-
+  Linkerd Edge Release Roundup: June 2024
+url:
+  /2024/06/06/linkerd-edge-release-roundup/
+thumbnail: '/uploads/2023/06/roundup-clocks-square.png'
+featuredImage: '/uploads/2024/06/roundup-06-featured.png'
+tags: [Linkerd, linkerd, edge, release, roundup]
+featured: false
+---
+
+{{< fig
+  alt="June 2024 Linkerd Edge Release Roundup"
+  src="/uploads/2023/06/roundup-clocks-rect.png" >}}
+
+Welcome to the June 2024 Edge Release Roundup post, where we dive into the
+most recent edge releases to help keep everyone up to date on the latest and
+greatest!
+
+## How to give feedback
+
+Remember, edge releases are a snapshot of our current development work on
+`main`; by definition, they always have the most recent features but they may
+have incomplete features, features that end up getting rolled back later, or
+(like all software) even bugs. That said, edge releases *are* intended for
+production use, and go through a rigorous set of automated and manual tests
+before being released.
+
+We would be delighted to hear how these releases work out for you! You can
+open [a GitHub issue](https://github.com/linkerd/linkerd2/issues/) or
+[discussion](https://github.com/linkerd/linkerd2/discussions/), join us on
+[Slack](https://slack.linkerd.io), or visit the [Buoyant Linkerd
+Forum](https://linkerd.buoyant.io) -- all are great ways to reach us.
+
+## Community contributions
+
+We couldn't do what we do without the Linkerd community, and this batch of
+releases is definitely no exception. Huge thanks to [knowmost], [Marwan
+Ahmed], and [Nico Feulner] for their contributions! You'll find more
+information about all of these contributions in the release-by-release details
+below.
+
+[knowmost]: https://github.com/knowmost
+[Marwan Ahmed]: https://github.com/marwanad
+[Nico Feulner]: https://github.com/nico151999
+
+## Recommendations and breaking changes
+
+We recommend `edge-24.5.5` for anyone considering an `edge-24.5.*` release; it
+has important fixes for the Linkerd CNI plugin on GKE. `edge-24.5.1` is
+specifically **not** recommended for users of GKE, due to a bug with the
+default Linkerd configuration in that release.
+
+Starting in `edge-24.5.1`, the `patchs` metric introduced in `edge-24.3.4` is
+renamed to `patches`.
+
+Finally, starting in `edge-24.5.2`, Linkerd will install the GRPCRoute CRD in
+the `gateway.networking.k8s.io` API group, in preparation for later GRPCRoute
+support. (You can disable this by setting `enableHttpRoutes` to `false` when
+installing, which will also prevent Linkerd from installing the HTTPRoute CRD
+in the `gateway.networking.k8s.io` API group.)
+
+## The releases
+
+This group of releases has focused on IPv6 support - delivered in
+`edge-24.5.2`! - and finalizing fixes for some edge cases in the way Linkerd
+handles EndpointSlices and HTTPRoutes. Of course, each edge release has _many_
+dependency updates; we won't list them all here, but you can find them in the
+release notes for each release.
+
+### [`edge-24.5.5`](https://github.com/linkerd/linkerd2/releases/tag/edge-24.5.5) (May 31, 2024)
+
+This release switches IPv6 off by default for the entire control plane,
+including the Linkerd CNI plugin. Set `disableIPv6` to `false` to enable IPv6.
+
+### [`edge-24.5.4`](https://github.com/linkerd/linkerd2/releases/tag/edge-24.5.4) (May 23, 2024)
+
+_We recommend [`edge-24.5.5`] instead of this release. In this release, IPv6
+support is off by default for most of the control plane, but it is mistakenly
+on by default for the Linkerd CNI plugin._
+
+This release adds support for JSON output to the `linkerd inject`, `linkerd
+uninject` and `linkerd profile` commands, and a `--token` flag to `linkerd
+diagnostics policy` that allows specifying the context token to use so that
+you can see how specific clients will see policies. It also adds support for
+setting the group ID for the control plane (thanks, [Nico Feulner]!), switches
+IPv6 to off by default for the control plane, adds support for several proxy
+settings to the `linkerd-control-plane` chart, allows overriding how many
+cores control-plane components can use, correctly supports Gateway API
+producer routes, fixes a race conditions around EndpointSlice updates, and
+fixes intermittent routing failures with HTTPRoute ([issue 12610]).
+
+[`edge-24.5.5`]: https://github.com/linkerd/linkerd2/releases/tag/edge-24.5.5
+[Nico Feulner]: https://github.com/nico151999
+[issue 12610]: https://github.com/linkerd/linkerd2/issues/12610
+
+### [`edge-24.5.3`](https://github.com/linkerd/linkerd2/releases/tag/edge-24.5.3) (May 15, 2024)
+
+_If you use the Linkerd CNI plugin on GKE, you will need to disable IPv6 or
+use [`edge-24.5.5`] instead._
+
+This release removes an internal limit on the number of concurrent gRPC
+streams to the control plane, leaving available memory as the only constraint.
+
+### [`edge-24.5.2`](https://github.com/linkerd/linkerd2/releases/tag/edge-24.5.2) (May 13, 2024)
+
+_If you use the Linkerd CNI plugin on GKE, you will need to disable IPv6 or
+use [`edge-24.5.5`] instead._
+
+This release adds support for IPv6. It defaults to enabled: set `disableIPv6`
+to `true` when installing to disable it. It also correctly sets the
+`backend_not_found` status on HTTPRoutes with no backends. Finally, it adds
+the Gateway API GRPCRoute resource (in the `gateway.networking.k8s.io` API
+group) as part of continued work on support for GRPCRoutes, although this edge
+release doesn't attach any functionality to the CRD.
+
+To prevent Linkerd from installing any CRDs into `gateway.networking.k8s.io`,
+set `enableHttpRoutes` to `false` when installing.
+
+### [`edge-24.5.1`](https://github.com/linkerd/linkerd2/releases/tag/edge-24.5.1) (May 2, 2024)
+
+_We recommend [`edge-24.5.5`] instead of this release due to a bug that
+prevents Linkerd from functioning on GKE with the default configuration.
+Additionally, this release has one breaking change: the `patchs` metric
+introduced in [`edge-24.3.4`] is now correctly named `patches`._
+
+This release adds configurable HTTP/2 server keepalives, fixes CLI issues and
+opaque-port issues when using native sidecars ([issue #12395]), restores
+Server v1beta1 to ease migrations after it was mistakenly removed in
+[`edge-24.1.2`], fixes an issue that could cause the endpoints gauge to report
+incorrect numbers of endpoints, and continues ongoing work on upcoming IPv6
+support.
+
+Additionally, it avoids unnecessary cleanup of headless endpoint mirrors
+during garbage collection (thanks, [Marwan Ahmed]!) and cleans up some
+documentation in the code (thanks, [knowmost]!).
+
+[issue #12395]: https://github.com/linkerd/linkerd2/issues/12395
+[`edge-24.3.4`]: https://github.com/linkerd/linkerd2/releases/tag/edge-24.3.4
+[`edge-24.1.2`]: https://github.com/linkerd/linkerd2/releases/tag/edge-24.1.2
+[Marwan Ahmed]: https://github.com/marwanad
+[knowmost]: https://github.com/knowmost
+
+## Installing the latest edge release
+
+Installing the latest edge release needs just a single command.
+
+```bash
+curl --proto '=https' --tlsv1.2 -sSfL https://run.linkerd.io/install-edge | sh
+```
+
+You can also [install edge releases with Helm](https://linkerd.io/2.15/tasks/install-helm/).
+
+## Linkerd is for everyone
+
+Linkerd is a graduated project of the [Cloud Native Computing
+Foundation](https://cncf.io/). Linkerd is [committed to open
+governance.](/2019/10/03/linkerds-commitment-to-open-governance/) If you have
+feature requests, questions, or comments, we'd love to have you join our
+rapidly-growing community! Linkerd is hosted on
+[GitHub](https://github.com/linkerd/), and we have a thriving community on
+[Slack](https://slack.linkerd.io/), [Twitter](https://twitter.com/linkerd), and
+in [mailing lists](/community/get-involved/). Come and join the fun!
+
+----
+
+_Linkerd generally does new edge releases weekly; watch this space to keep
+up-to-date. Feedback on this blog series is welcome! Just ping `@flynn` on the
+[Linkerd Slack](https://slack.linkerd.io)._