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* Edge Roundup for May (even though it's June now, we're covering the May releases) Signed-off-by: Flynn <[email protected]> * Formatting. Signed-off-by: Flynn <[email protected]> * Update linkerd.io/content/blog/2024/0606-edge-release-roundup.md Co-authored-by: William Morgan <[email protected]> * Update to reflect Alejandro's information about IPv6 and GKE Signed-off-by: Flynn <[email protected]> --------- Signed-off-by: Flynn <[email protected]> Co-authored-by: William Morgan <[email protected]>
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linkerd.io/content/blog/2024/0606-edge-release-roundup.md
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| --- | ||
| 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/2023/06/roundup-clocks-rect.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 release *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)._ |