Simple 404 server

404-server/Dockerfile

@@ -0,0 +1,18 @@
+# Copyright 2015 The Kubernetes Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM busybox
+MAINTAINER Prashanth B <[email protected]>
+ADD server server
+ENTRYPOINT ["/server"]

404-server/Makefile

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+all: push
+
+# 0.0 shouldn't clobber any released builds
+TAG = 0.0
+PREFIX = gcr.io/google_containers/defaultbackend
+
+server: server.go
+	CGO_ENABLED=0 GOOS=linux godep go build -a -installsuffix cgo -ldflags '-w' -o server ./server.go
+
+container: server
+	docker build -t $(PREFIX):$(TAG) .
+
+push: container
+	gcloud docker push $(PREFIX):$(TAG)
+
+clean:
+	rm -f server

404-server/server.go

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+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// A webserver that only serves a 404 page. Used as a default backend.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"net/http"
+)
+
+var port = flag.Int("port", 8080, "Port number to serve default backend 404 page.")
+
+func main() {
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusNotFound)
+		fmt.Fprint(w, "default backend - 404")
+	})
+	http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprint(w, "ok")
+	})
+	http.ListenAndServe(fmt.Sprintf(":%d", *port), nil)
+}