Add agentgateway gateway support

Split chart provider selection from GatewayClass naming, route kgateway compatibility through the agentgateway class, and add AgentgatewayParameters rendering.

Refresh generated chart docs and schema, deprecate kgateway in favor of standalone agentgateway, and update CI workflow pins and provider handling.

Signed-off-by: Daneyon Hansen <daneyon.hansen@solo.io>

Author: danehans

.github/workflows/lint.yaml

@@ -35,7 +35,7 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@5119fcb9089d432beecbf79bb2c7915207344b78 # renovate: tag=v3.5
         with:
-          version: v3.10.0
+          version: v3.18.6
 
       - name: Helm add bitnami chart
         run: |
@@ -48,7 +48,7 @@ jobs:
           python-version: 3.13
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@0d28d3144d3a25ea2cc349d6e59901c4ff469b3b # v2.7.0
+        uses: helm/chart-testing-action@6ec842c01de15ebb84c8627d2744a0c2f2755c9f # v2.8.0
 
       - name: Run chart-testing (list-changed)
         id: list-changed

.github/workflows/test.yaml

@@ -26,6 +26,11 @@ jobs:
     # Aligning job name with the OpenShift CI config: https://github.com/openshift/release/blob/master/core-services/prow/02_config/redhat-developer/rhdh-chart/_prowconfig.yaml#L18
     name: Test Latest Release
     runs-on: ubuntu-latest
+    # TODO: Switch this job to a provider matrix once the upstream prerequisite
+    # helmfiles are ready for agentgateway and other CI-supported providers:
+    # https://github.com/llm-d/llm-d/issues/399
+    env:
+      GATEWAY_PROVIDER: istio
     steps:
       - name: Checkout PR HEAD (handles forks)
         if: github.event_name == 'pull_request'
@@ -47,14 +52,14 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@5119fcb9089d432beecbf79bb2c7915207344b78 # renovate: tag=v3.5
         with:
-          version: v3.10.0
+          version: v3.18.6
 
       - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5
         with:
           python-version: 3.13
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@0d28d3144d3a25ea2cc349d6e59901c4ff469b3b # v2.7.0
+        uses: helm/chart-testing-action@6ec842c01de15ebb84c8627d2744a0c2f2755c9f # v2.8.0
 
       - name: Run chart-testing (list-changed)
         id: list-changed
@@ -75,9 +80,11 @@ jobs:
 
       - name: Create KIND Cluster
         if: steps.list-changed.outputs.changed == 'true'
-        uses: helm/kind-action@a1b0e391336a6ee6713a0583f8c6240d70863de3 # v1.12.0
+        uses: helm/kind-action@f5f117a566cacf2b7e54d9ddbfa40584fdf3b127 # v1.14.0
         with:
           config: helpers/kind-testing/kind-config.yaml
+          version: v0.31.0
+          kubectl_version: v1.35.0
 
       - name: Create custom storage class
         if: steps.list-changed.outputs.changed == 'true'
@@ -127,8 +134,8 @@ jobs:
           cd "${dir}"
           curl -LsSf https://raw.githubusercontent.com/llm-d/llm-d/refs/heads/main/guides/prereq/client-setup/install-deps.sh | /bin/bash
           curl -LsSf https://raw.githubusercontent.com/llm-d/llm-d/refs/heads/main/guides/prereq/gateway-provider/install-gateway-provider-dependencies.sh | /bin/bash
-          curl -sLO https://raw.githubusercontent.com/llm-d/llm-d/refs/heads/main/guides/prereq/gateway-provider/istio.helmfile.yaml
-          helmfile apply -f istio.helmfile.yaml
+          curl -sLO https://raw.githubusercontent.com/llm-d/llm-d/refs/heads/main/guides/prereq/gateway-provider/${GATEWAY_PROVIDER}.helmfile.yaml
+          helmfile apply -f "${GATEWAY_PROVIDER}.helmfile.yaml"
           cd -
           rm -rf "${dir}"
 
@@ -140,4 +147,5 @@ jobs:
           ct install \
             --debug \
             --config ct-install.yaml \
-            --target-branch "$TARGET_BRANCH"
+            --target-branch "$TARGET_BRANCH" \
+            --helm-extra-set-args "--set gateway.provider=${GATEWAY_PROVIDER}"

README.md

@@ -8,8 +8,10 @@ This repository provides the Kubernetes infrastructure components, Helm charts,
 **Infrastructure Components:**
 
 - Helm charts for deploying llm-d gateway infrastructure
-- Kubernetes Gateway API configurations with support for Istio, Kgateway
-  (both Envoy and [agentgateway](https://agentgateway.dev/) data planes), and GKE
+- Kubernetes Gateway API configurations with support for Istio,
+  [agentgateway](https://agentgateway.dev/), and GKE
+- `kgateway` compatibility mode for inference, deprecated in favor of
+  standalone `agentgateway` and scheduled for removal in the next llm-d release
 - Service mesh integration and traffic management policies
 
 **Operational Tooling:**
@@ -25,7 +27,10 @@ This repository provides the Kubernetes infrastructure components, Helm charts,
 - Kubernetes 1.28+ cluster
 - Helm 3.10+
 - Gateway API v1.4.0+ installed
-- Gateway controller (Istio, Kgateway, AgentGateway or GKE) deployed in your cluster
+- Gateway controller (Istio, agentgateway, or GKE) deployed in your cluster
+- `kgateway` remains supported as a deprecated compatibility mode and install
+  path and will be removed in the next llm-d release in favor of standalone
+  `agentgateway`
 
 ### Install llm-d Infrastructure
 

charts/llm-d-infra/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v2
 name: llm-d-infra
 type: application
-version: v1.3.10
+version: v1.4.0
 appVersion: v0.3.0
 icon: data:image/svg+xml;base64,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
 description: llm-d-infra are the infrastructure components surrounding the llm-d system - a Kubernetes-native high-performance distributed LLM inference framework

charts/llm-d-infra/README.md

@@ -1,7 +1,7 @@
 
 # llm-d-infra Helm Chart
 
-![Version: v1.3.10](https://img.shields.io/badge/Version-v1.3.10-informational?style=flat-square)
+![Version: v1.4.0](https://img.shields.io/badge/Version-v1.4.0-informational?style=flat-square)
 ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square)
 
 llm-d-infra are the infrastructure components surrounding the llm-d system - a Kubernetes-native high-performance distributed LLM inference framework
@@ -41,7 +41,8 @@ sudo mv kubectl /usr/local/bin/
 - Kubernetes 1.30+ (OpenShift 4.17+)
 - Helm 3.10+ or [latest release](https://github.com/helm/helm/releases)
 - [Gateway API v1.3.0](https://gateway-api.sigs.k8s.io/guides/) or [latest release](https://github.com/kubernetes-sigs/gateway-api/releases)
-- [Kgateway](https://kgateway.dev/) (or [Istio](http://istio.io/)) installed in the cluster (see for [examples](https://github.com/llm-d-incubation/llm-d-infra/blob/main/chart-dependencies/kgateway/install.sh) we use in our CI)
+- [agentgateway](https://agentgateway.dev/) or [Istio](http://istio.io/) installed in the cluster
+- `kgateway` remains supported as a deprecated compatibility mode and install path and will be removed in the next llm-d release in favor of standalone `agentgateway`
 
 ## Usage
 
@@ -106,16 +107,21 @@ Kubernetes: `>= 1.28.0-0`
 | extraDeploy | Array of extra objects to deploy with the release | list | `[]` |
 | fullnameOverride | String to fully override common.names.fullname | string | `""` |
 | gateway | Gateway configuration | object | See below |
+| gateway.agentgateway | Shared AgentgatewayParameters for standalone "agentgateway" and the deprecated "kgateway" compatibility mode. | object | `{"env":[],"istio":{},"rawConfig":{},"shutdown":{}}` |
+| gateway.agentgateway.env | Additional environment variables for the agentgateway proxy | list | `[]` |
+| gateway.agentgateway.istio | Optional Istio integration settings for the agentgateway proxy | object | `{}` |
+| gateway.agentgateway.rawConfig | Raw agentgateway config merged into the generated configuration | object | `{}` |
+| gateway.agentgateway.shutdown | Optional shutdown behavior for the agentgateway proxy | object | `{}` |
 | gateway.annotations | Additional annotations provided to the Gateway resource | object | `{}` |
 | gateway.destinationRule | see: https://istio.io/latest/docs/reference/config/networking/destination-rule/ | object | `{"enabled":false,"exportTo":[],"host":"localhost","subsets":[],"trafficPolicy":{},"workloadSelector":{}}` |
 | gateway.enabled | Deploy resources related to Gateway | bool | `true` |
 | gateway.fullnameOverride | String to fully override gateway.fullname | string | `""` |
-| gateway.gatewayClassName | Gateway class that determines the backend used Currently supported values: "kgateway" or "agentgateway-v2" for kgateway, "istio", "data-science-gateway-class", or "gke-l7-regional-external-managed" | string | `"istio"` |
-| gateway.gatewayParameters.floatingUserId | Enable floating user ID for OpenShift compatibility When true, allows OpenShift to assign user IDs from its allowed range instead of using a hardcoded user ID | bool | `false` |
+| gateway.gatewayClassName | Deprecated: "kgateway" and "agentgateway-v2" are compatibility aliases and are rendered as "agentgateway". | string | `""` |
 | gateway.gatewayParameters.resources | Resource requests/limits <br /> Ref: https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#resource-requests-and-limits-of-pod-and-container | object | `{"limits":{"cpu":"2","memory":"1Gi"},"requests":{"cpu":"100m","memory":"128Mi"}}` |
 | gateway.labels | Additional labels provided to the Gateway resource | object | `{}` |
 | gateway.listeners | Set of listeners exposed via the Gateway, also propagated to the Ingress if enabled | list | `[{"allowedRoutes":{"namespaces":{"from":"All"}},"name":"default","port":80,"protocol":"HTTP"}]` |
 | gateway.nameOverride | String to partially override gateway.fullname | string | `""` |
+| gateway.provider | Deprecated: "kgateway" selects the deprecated kgateway compatibility mode and install path and will be removed in the next llm-d release. | string | `"istio"` |
 | gateway.tls | TLS configuration for gateway | object | See below |
 | gateway.tls.referenceGrant | ReferenceGrant configuration for cross-namespace TLS certificate access | object | See below |
 | gateway.tls.referenceGrant.enabled | Enable ReferenceGrant creation (disabled by default) | bool | `false` |
@@ -142,5 +148,5 @@ Kubernetes: `>= 1.28.0-0`
 This chart deploys all infrastructure required to run the [llm-d](https://llm-d.ai/) project. It includes:
 
 - A Gateway
-- Gateway Parameters if Kgateway is chosen as a provider
+- AgentgatewayParameters for standalone agentgateway and the deprecated kgateway compatibility mode
 - An optional ingress to sit in front of the gateway

charts/llm-d-infra/README.md.gotmpl

@@ -38,7 +38,8 @@ sudo mv kubectl /usr/local/bin/
 - Kubernetes 1.30+ (OpenShift 4.17+)
 - Helm 3.10+ or [latest release](https://github.com/helm/helm/releases)
 - [Gateway API v1.3.0](https://gateway-api.sigs.k8s.io/guides/) or [latest release](https://github.com/kubernetes-sigs/gateway-api/releases)
-- [Kgateway](https://kgateway.dev/) (or [Istio](http://istio.io/)) installed in the cluster (see for [examples](https://github.com/llm-d-incubation/llm-d-infra/blob/main/chart-dependencies/kgateway/install.sh) we use in our CI)
+- [agentgateway](https://agentgateway.dev/) or [Istio](http://istio.io/) installed in the cluster
+- `kgateway` remains supported as a deprecated compatibility mode and install path and will be removed in the next llm-d release in favor of standalone `agentgateway`
 
 ## Usage
 
@@ -96,5 +97,5 @@ The command removes all the Kubernetes components associated with the chart and
 This chart deploys all infrastructure required to run the [llm-d](https://llm-d.ai/) project. It includes:
 
 - A Gateway
-- Gateway Parameters if Kgateway is chosen as a provider
+- AgentgatewayParameters for standalone agentgateway and the deprecated kgateway compatibility mode
 - An optional ingress to sit in front of the gateway

charts/llm-d-infra/templates/NOTES.txt

@@ -8,3 +8,12 @@ To learn more about the release, try:
 $ helm status {{ .Release.Name }} -n {{ .Release.Namespace }}
 $ helm get all {{ .Release.Name }} -n {{ .Release.Namespace }}
 ```
+
+{{- if or (eq .Values.gateway.provider "kgateway") (eq .Values.gateway.gatewayClassName "kgateway") (eq .Values.gateway.gatewayClassName "agentgateway-v2") }}
+
+`gateway.provider=kgateway`, `gateway.gatewayClassName=kgateway`, and `gateway.gatewayClassName=agentgateway-v2` are deprecated.
+`gateway.provider=kgateway` enables the deprecated kgateway compatibility mode and install path.
+`gateway.gatewayClassName=kgateway` and `gateway.gatewayClassName=agentgateway-v2` are compatibility aliases and are rendered as `agentgateway`.
+Use standalone `agentgateway` instead. The kgateway compatibility mode will be removed in the next llm-d release.
+Set `gateway.provider=agentgateway` and leave `gateway.gatewayClassName` empty, or set it explicitly to `agentgateway`.
+{{- end }}