📝 add documentation about Skipper Ingress (#15)

Skipper Ingress Controller support is added with
fluxcd#670.

This commit add the documentation and links to mention
Skipper is now an available option.

Currently only Canary deployments are supported.

.gitbook.yaml

@@ -10,4 +10,5 @@ redirects:
   usage/contour-progressive-delivery: tutorials/contour-progressive-delivery.md
   usage/gloo-progressive-delivery: tutorials/gloo-progressive-delivery.md
   usage/nginx-progressive-delivery: tutorials/nginx-progressive-delivery.md
+  usage/skipper-progressive-delivery: tutorials/skipper-progressive-delivery.md
   usage/crossover-progressive-delivery: tutorials/crossover-progressive-delivery.md

README.md

@@ -13,7 +13,7 @@ by gradually shifting traffic to the new version while measuring metrics and run
 ![flagger-overview](https://raw.githubusercontent.com/weaveworks/flagger/master/docs/diagrams/flagger-canary-overview.png)
 
 Flagger implements several deployment strategies (Canary releases, A/B testing, Blue/Green mirroring)
-using a service mesh (App Mesh, Istio, Linkerd) or an ingress controller (Contour, Gloo, NGINX) for traffic routing.
+using a service mesh (App Mesh, Istio, Linkerd) or an ingress controller (Contour, Gloo, NGINX, Skipper) for traffic routing.
 For release analysis, Flagger can query Prometheus, Datadog or CloudWatch
 and for alerting it uses Slack, MS Teams, Discord and Rocket.
 
@@ -37,6 +37,7 @@ Flagger documentation can be found at [docs.flagger.app](https://docs.flagger.ap
   * [Contour](https://docs.flagger.app/tutorials/contour-progressive-delivery)
   * [Gloo](https://docs.flagger.app/tutorials/gloo-progressive-delivery)
   * [NGINX Ingress](https://docs.flagger.app/tutorials/nginx-progressive-delivery)
+  * [Skipper](https://docs.flagger.app/tutorials/skipper-progressive-delivery)
   * [Kubernetes Blue/Green](https://docs.flagger.app/tutorials/kubernetes-blue-green)
 
 ### Who is using Flagger
@@ -71,7 +72,7 @@ metadata:
   namespace: test
 spec:
   # service mesh provider (optional)
-  # can be: kubernetes, istio, linkerd, appmesh, nginx, contour, gloo, supergloo
+  # can be: kubernetes, istio, linkerd, appmesh, nginx, skipper, contour, gloo, supergloo
   provider: istio
   # deployment reference
   targetRef:
@@ -180,17 +181,17 @@ For more details on how the canary analysis and promotion works please [read the
 
 ### Features
 
-| Feature                                      | Istio              | Linkerd            | App Mesh           | NGINX              | Gloo               | Contour            | CNI                |
-| -------------------------------------------- | ------------------ | ------------------ |------------------  |------------------  |------------------  |------------------  |------------------  |
-| Canary deployments (weighted traffic)        | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_minus_sign: |
-| A/B testing (headers and cookies routing)    | :heavy_check_mark: | :heavy_minus_sign: | :heavy_check_mark: | :heavy_check_mark: | :heavy_minus_sign: | :heavy_check_mark: | :heavy_minus_sign: |
-| Blue/Green deployments (traffic switch)      | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
-| Webhooks (acceptance/load testing)           | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
-| Manual gating (approve/pause/resume)         | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
-| Request success rate check (L7 metric)       | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_minus_sign: |
-| Request duration check (L7 metric)           | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_minus_sign: |
-| Custom metric checks                         | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
-| Traffic policy, CORS, retries and timeouts   | :heavy_check_mark: | :heavy_minus_sign: | :heavy_minus_sign: | :heavy_minus_sign: | :heavy_minus_sign: | :heavy_check_mark: | :heavy_minus_sign: |
+| Feature                                    | Istio              | Linkerd            | App Mesh           | NGINX              | Skipper            | Gloo               | Contour            | CNI                |
+| ------------------------------------------ | ------------------ | ------------------ | ------------------ | ------------------ | ------------------ | ------------------ | ------------------ | ------------------ |
+| Canary deployments (weighted traffic)      | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_minus_sign: |
+| A/B testing (headers and cookies routing)  | :heavy_check_mark: | :heavy_minus_sign: | :heavy_check_mark: | :heavy_check_mark: | :heavy_minus_sign: | :heavy_minus_sign: | :heavy_check_mark: | :heavy_minus_sign: |
+| Blue/Green deployments (traffic switch)    | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_minus_sign: | :heavy_check_mark: | :heavy_check_mark: |
+| Webhooks (acceptance/load testing)         | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
+| Manual gating (approve/pause/resume)       | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
+| Request success rate check (L7 metric)     | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_minus_sign: |
+| Request duration check (L7 metric)         | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_minus_sign: |
+| Custom metric checks                       | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
+| Traffic policy, CORS, retries and timeouts | :heavy_check_mark: | :heavy_minus_sign: | :heavy_minus_sign: | :heavy_minus_sign: | :heavy_check_mark: | :heavy_minus_sign: | :heavy_check_mark: | :heavy_minus_sign: |
 
 ### Roadmap
 

charts/flagger/README.md

@@ -7,7 +7,7 @@ Flagger can run automated application analysis, testing, promotion and rollback
 * A/B Testing (HTTP headers and cookies traffic routing)
 * Blue/Green (traffic switching and mirroring)
 
-Flagger works with service mesh solutions (Istio, Linkerd, AWS App Mesh) and with Kubernetes ingress controllers (NGINX, Gloo, Contour).
+Flagger works with service mesh solutions (Istio, Linkerd, AWS App Mesh) and with Kubernetes ingress controllers (NGINX, Skipper, Gloo, Contour).
 Flagger can be configured to send alerts to various chat platforms such as Slack, Microsoft Teams, Discord and Rocket.
 
 ## Prerequisites

cmd/flagger/main.go

@@ -78,7 +78,7 @@ func init() {
 	flag.BoolVar(&zapReplaceGlobals, "zap-replace-globals", false, "Whether to change the logging level of the global zap logger.")
 	flag.StringVar(&zapEncoding, "zap-encoding", "json", "Zap logger encoding.")
 	flag.StringVar(&namespace, "namespace", "", "Namespace that flagger would watch canary object.")
-	flag.StringVar(&meshProvider, "mesh-provider", "istio", "Service mesh provider, can be istio, linkerd, appmesh, contour, gloo or nginx.")
+	flag.StringVar(&meshProvider, "mesh-provider", "istio", "Service mesh provider, can be istio, linkerd, appmesh, contour, gloo, nginx or skipper.")
 	flag.StringVar(&selectorLabels, "selector-labels", "app,name,app.kubernetes.io/name", "List of pod labels that Flagger uses to create pod selectors.")
 	flag.StringVar(&ingressAnnotationsPrefix, "ingress-annotations-prefix", "nginx.ingress.kubernetes.io", "Annotations prefix for NGINX ingresses.")
 	flag.StringVar(&ingressClass, "ingress-class", "", "Ingress class used for annotating HTTPProxy objects.")

docs/gitbook/README.md

@@ -5,7 +5,7 @@ description: Flagger is a progressive delivery Kubernetes operator
 # Introduction
 
 [Flagger](https://github.com/weaveworks/flagger) is a **Kubernetes** operator that automates the promotion of
-canary deployments using **Istio**, **Linkerd**, **App Mesh**, **NGINX**, **Contour** or **Gloo** routing for
+canary deployments using **Istio**, **Linkerd**, **App Mesh**, **NGINX**, **Skipper**, **Contour** or **Gloo** routing for
 traffic shifting and **Prometheus** metrics for canary analysis. The canary analysis can be extended with webhooks for
 running system integration/acceptance tests, load tests, or any other custom validation.
 
@@ -39,6 +39,7 @@ After install Flagger, you can follow one of the tutorials:
 * [Contour](tutorials/contour-progressive-delivery.md)
 * [Gloo](tutorials/gloo-progressive-delivery.md)
 * [NGINX Ingress](tutorials/nginx-progressive-delivery.md)
+* [Skipper Ingress](tutorials/skipper-progressive-delivery.md)
 
 **Hands-on GitOps workshops**
 

docs/gitbook/SUMMARY.md

@@ -25,6 +25,7 @@
 * [Linkerd Canary Deployments](tutorials/linkerd-progressive-delivery.md)
 * [App Mesh Canary Deployments](tutorials/appmesh-progressive-delivery.md)
 * [NGINX Canary Deployments](tutorials/nginx-progressive-delivery.md)
+* [Skipper Canary Deployments](tutorials/skipper-progressive-delivery.md)
 * [Gloo Canary Deployments](tutorials/gloo-progressive-delivery.md)
 * [Contour Canary Deployments](tutorials/contour-progressive-delivery.md)
 * [Blue/Green Deployments](tutorials/kubernetes-blue-green.md)

docs/gitbook/install/flagger-install-on-kubernetes.md

@@ -77,6 +77,7 @@ For ingress controllers, the install instructions are:
 * [Contour](https://docs.flagger.app/tutorials/contour-progressive-delivery)
 * [Gloo](https://docs.flagger.app/tutorials/gloo-progressive-delivery)
 * [NGINX](https://docs.flagger.app/tutorials/nginx-progressive-delivery)
+* [Skipper](https://docs.flagger.app/tutorials/skipper-progressive-delivery)
 
 Enable **Slack** notifications:
 
@@ -198,7 +199,7 @@ kustomize build https://github.com/weaveworks/flagger/kustomize/linkerd?ref=v1.0
 
 **Generic installer**
 
-Install Flagger and Prometheus for Contour, Gloo or NGINX ingress:
+Install Flagger and Prometheus for Contour, Gloo, NGINX or Skipper ingress:
 
 ```bash
 kustomize build https://github.com/weaveworks/flagger/kustomize/kubernetes | kubectl apply -f -
@@ -219,7 +220,7 @@ metadata:
   name: app
   namespace: test
 spec:
-  # can be: kubernetes, istio, linkerd, appmesh, nginx, gloo
+  # can be: kubernetes, istio, linkerd, appmesh, nginx, skipper, gloo
   # use the kubernetes provider for Blue/Green style deployments
   provider: nginx
 ```