Init build

.gitignore

@@ -10,3 +10,4 @@
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
+bin/

Dockerfile

@@ -0,0 +1,27 @@
+FROM golang:1.13 as builder
+
+RUN mkdir -p /kxds/
+
+WORKDIR /kxds
+
+COPY . .
+
+RUN go mod download
+
+RUN CGO_ENABLED=0 GOOS=linux go build -a -o bin/kxds cmd/kxds/*
+
+FROM alpine:3.10
+
+RUN addgroup -S app \
+    && adduser -S -g app app \
+    && apk --no-cache add \
+    curl openssl netcat-openbsd
+
+WORKDIR /home/app
+
+COPY --from=builder /kxds/bin/kxds .
+RUN chown -R app:app ./
+
+USER app
+
+CMD ["./kxds"]

Makefile

@@ -0,0 +1,17 @@
+TAG?=latest
+VERSION?=$(shell grep 'VERSION' cmd/kxds/version.go | awk '{ print $$4 }' | tr -d '"' | head -n1)
+NAME:=kxds
+DOCKER_REPOSITORY:=stefanprodan
+DOCKER_IMAGE_NAME:=$(DOCKER_REPOSITORY)/$(NAME)
+
+run:
+	go run cmd/kxds/*.go serve --kubeconfig=$$HOME/.kube/config
+
+envoy:
+	envoy -c envoy.yaml -l info
+
+build-container:
+	docker build -t $(DOCKER_IMAGE_NAME):$(VERSION) .
+
+push-container: build-container
+	docker push $(DOCKER_IMAGE_NAME):$(VERSION)

README.md

@@ -1 +1,16 @@
-# kxds
+# kxds
+
+KxDS is an Envoy discovery service implementation for Kubernetes services
+
+## Features
+
+* **Service Discovery** KxDS watches Kubernetes for ClusterIP services with a `http` named port
+* **Envoy Clusters (CDS)** are generated for each Kubernetes service in the form `<name>-<namespace>-<http-port>`
+* **Envoy Routes (RDS)** are generated for each cluster and mapped to the `<name>.<namespace>` domain
+* **Envoy Listeners (LDS)** KxDS configures Envoy to listen on port 8080 and sets up retry policies for each route
+
+## Install
+
+```sh
+kubectl apply -k github.com/stefanprodan/kxds//kustomize/envoy
+```

envoy.yaml

@@ -0,0 +1,37 @@
+node:
+  cluster: envoy
+  id: envoy
+
+admin:
+  access_log_path: /dev/null
+  address:
+    socket_address:
+      address: 0.0.0.0
+      port_value: 9000
+
+dynamic_resources:
+  ads_config:
+    api_type: GRPC
+    grpc_services:
+      - envoy_grpc:
+          cluster_name: xds
+  cds_config:
+    ads: {}
+  lds_config:
+    ads: {}
+
+static_resources:
+  clusters:
+    - name: xds
+      connect_timeout: 0.30s
+      type: static
+      http2_protocol_options: {}
+      load_assignment:
+        cluster_name: xds
+        endpoints:
+          - lb_endpoints:
+              - endpoint:
+                  address:
+                    socket_address:
+                      address: 127.0.0.1
+                      port_value: 18000

go.mod

@@ -0,0 +1,19 @@
+module github.com/stefanprodan/kxds
+
+go 1.13
+
+require (
+	github.com/envoyproxy/go-control-plane v0.9.0
+	github.com/gogo/protobuf v1.3.1
+	github.com/golang/protobuf v1.3.2
+	github.com/googleapis/gnostic v0.3.1 // indirect
+	github.com/imdario/mergo v0.3.8 // indirect
+	github.com/spf13/cobra v0.0.5
+	golang.org/x/time v0.0.0-20191024005414-555d28b269f0 // indirect
+	google.golang.org/grpc v1.23.0
+	k8s.io/api v0.0.0-20191025225708-5524a3672fbb
+	k8s.io/apimachinery v0.0.0-20191025225532-af6325b3a843
+	k8s.io/client-go v0.0.0-20190620085101-78d2af792bab
+	k8s.io/klog v1.0.0
+	k8s.io/utils v0.0.0-20191010214722-8d271d903fe4 // indirect
+)