Contour - v1.28.2

We are delighted to present version v1.28.2 of Contour, our layer 7 HTTP reverse proxy for Kubernetes clusters.

All Changes

Update Envoy to v1.29.2

See the release notes here.

Note that this Envoy version reverts the HTTP/2 codec back to nghttp2 from oghttp2.

Disable Envoy removing TE header

As of version v1.29.0, Envoy removes the hop-by-hop TE header.
However, this causes issues with HTTP/2, particularly gRPC, with implementations expecting the header to be present (and set to trailers).
Contour disables this via Envoy runtime setting and reverts to the v1.28.x and prior behavior of allowing the header to be proxied.

Once this Envoy PR that enables the TE header including trailers to be forwarded is backported to a release or a new minor is cut, Contour will no longer set the aforementioned runtime key.

Installing and Upgrading

For a fresh install of Contour, consult the getting started documentation.

To upgrade an existing Contour installation, please consult the upgrade documentation.

Compatible Kubernetes Versions

Contour v1.28.2 is tested against Kubernetes 1.27 through 1.29.

Are you a Contour user? We would love to know!

If you're using Contour and want to add your organization to our adopters list, please visit this page. If you prefer to keep your organization name anonymous but still give us feedback into your usage and scenarios for Contour, please post on this GitHub thread.


March 19, 2024, 3:28 p.m.
Contour v1.28.2
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