Enable e2e tests for multiarch

Makefile

@@ -49,7 +49,8 @@ test: license-check gofmt
 	go test -cover $(TEST_PACKAGES_EXPANDED)
 	cd dist; ./mk-docker-opts_tests.sh
 
-e2e-test: dist/flanneld-$(TAG)-$(ARCH).docker
+e2e-test: dist/flanneld-e2e-$(TAG)-$(ARCH).docker
+	$(MAKE) -C images/iperf3 ARCH=$(ARCH)
 	cd dist; ./functional-test.sh $(REGISTRY):$(TAG)-$(ARCH)
 
 cover:
@@ -80,6 +81,18 @@ clean:
 	rm -f dist/*.docker
 	rm -f dist/*.tar.gz
 
+dist/flanneld-e2e-$(TAG)-$(ARCH).docker:
+        # valid values for $ARCH are [amd64 arm arm64 ppc64le s390x]
+	docker run -e GOARM=$(GOARM) \
+		-u $(shell id -u):$(shell id -g) \
+		-v $(CURDIR):/go/src/github.com/coreos/flannel:ro \
+		-v $(CURDIR)/dist:/go/src/github.com/coreos/flannel/dist \
+		golang:1.8.3 /bin/bash -c '\
+		cd /go/src/github.com/coreos/flannel && \
+		CGO_ENABLED=1 make -e dist/flanneld && \
+		mv dist/flanneld dist/flanneld-$(ARCH)'
+	docker build -f Dockerfile.$(ARCH) -t $(REGISTRY):$(TAG)-$(ARCH) .
+
 ## Create a docker image on disk for a specific arch and tag
 dist/flanneld-$(TAG)-$(ARCH).docker: dist/flanneld-$(ARCH) dist/iptables-$(ARCH)
 	docker build -f Dockerfile.$(ARCH) -t $(REGISTRY):$(TAG)-$(ARCH) .
@@ -242,4 +255,4 @@ run-local-kube-flannel-with-prereqs: run-etcd run-k8s-apiserver dist/flanneld
 
 run-local-kube-flannel:
 	# Currently this requires the netconf to be in /etc/kube-flannel/net-conf.json
-	sudo NODE_NAME=test dist/flanneld --kube-subnet-mgr --kube-api-url http://127.0.0.1:8080
+	sudo NODE_NAME=test dist/flanneld --kube-subnet-mgr --kube-api-url http://127.0.0.1:8080

dist/functional-test.sh

@@ -2,7 +2,13 @@
 # Uncomment to see what commands are being executed
 #set -x
 
-ETCD_IMG="quay.io/coreos/etcd:v3.0.3"
+ETCD_IMG="quay.io/coreos/etcd:v3.2.7"
+
+if [[ ${ARCH} == "ppc64le" ]]; then
+	ETCD_IMG+="-ppc64le"
+elif [[ ${ARCH} == "arm64" ]]; then
+	ETCD_IMG+="-arm64"
+fi
 FLANNEL_NET="10.10.0.0/16"
 
 usage() {
@@ -94,8 +100,8 @@ run_test() {
 	# Perf test - run iperf server on flannel1 and client on flannel2
 	if [ $exit_code -eq 0 ]; then
         docker rm -f flannel-e2e-test-flannel1-iperf 2>/dev/null
-        docker run -d --name flannel-e2e-test-flannel1-iperf --net=container:flannel-e2e-test-flannel1 mlabbe/iperf3
-        docker run --rm --net=container:flannel-e2e-test-flannel2 mlabbe/iperf3 -c $ping_dest
+        docker run -d --name flannel-e2e-test-flannel1-iperf --net=container:flannel-e2e-test-flannel1 iperf3:latest
+        docker run --rm --net=container:flannel-e2e-test-flannel2 iperf3:latest -c $ping_dest
     fi
 
 	docker stop flannel-e2e-test-flannel1 flannel-e2e-test-flannel2 >/dev/null

images/iperf3/Dockerfile

@@ -0,0 +1,11 @@
+FROM BASEIMAGE
+
+RUN apk add --update \
+    iperf3 \
+  && rm -rf /var/cache/apk/*
+
+EXPOSE 5201
+
+ENTRYPOINT ["/usr/bin/iperf3"]
+
+CMD ["--server","-p","5201"]

images/iperf3/Makefile

@@ -0,0 +1,22 @@
+IPERF_IMG ?= iperf3:latest
+
+ARCH ?= amd64
+
+TEMP_DIR := $(shell mktemp -d)
+
+ifeq ($(ARCH),amd64)
+        BASEIMAGE=alpine:3.6
+endif
+ifeq ($(ARCH),arm64)
+	BASEIMAGE=aarch64/alpine:3.6
+endif
+ifeq ($(ARCH),ppc64le)
+	BASEIMAGE=ppc64le/alpine:3.6
+endif
+
+all: container
+
+container:
+	cp ./* $(TEMP_DIR)
+	cd $(TEMP_DIR) && sed -i 's|BASEIMAGE|$(BASEIMAGE)|g' Dockerfile
+	docker build --pull -t $(IPERF_IMG) -f $(TEMP_DIR)/Dockerfile $(TEMP_DIR)