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Makefile
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.PHONY: test unit-test e2e-test deps cover gofmt gofmt-fix license-check clean tar.gz release buildx-create-builder build-multi-arch
# Registry used for publishing images
REGISTRY?=quay.io/coreos/flannel
QEMU_VERSION=v3.0.0
BASH_UNIT_VERSION=v2.3.0
# Default tag and architecture. Can be overridden
TAG?=$(shell git describe --tags --always)
ARCH?=amd64
# Only enable CGO (and build the UDP backend) on AMD64
ifeq ($(ARCH),amd64)
CGO_ENABLED=1
else
CGO_ENABLED=0
endif
# Go version to use for builds
GO_VERSION=1.23
# K8s version used for Makefile helpers
K8S_VERSION=1.29.8
GOARM=7
# These variables can be overridden by setting an environment variable.
TEST_PACKAGES?=pkg/ip pkg/subnet pkg/subnet/etcd pkg/subnet/kube pkg/trafficmngr pkg/backend
TEST_PACKAGES_EXPANDED=$(TEST_PACKAGES:%=github.com/flannel-io/flannel/%)
PACKAGES?=$(TEST_PACKAGES)
PACKAGES_EXPANDED=$(PACKAGES:%=github.com/flannel-io/flannel/%)
### BUILDING
clean:
rm -f dist/flanneld*
rm -f dist/*.aci
rm -f dist/*.docker
rm -f dist/*.tar.gz
rm -f dist/qemu-*
dist/flanneld: $(shell find . -type f -name '*.go')
CGO_ENABLED=$(CGO_ENABLED) go build -o dist/flanneld \
-ldflags '-s -w -X github.com/flannel-io/flannel/pkg/version.Version=$(TAG) -extldflags "-static"'
dist/flanneld.exe: $(shell find . -type f -name '*.go')
CXX=x86_64-w64-mingw32-g++ CC=x86_64-w64-mingw32-gcc CGO_ENABLED=1 GOOS=windows go build -o dist/flanneld.exe \
-ldflags '-s -w -X github.com/flannel-io/flannel/pkg/version.Version=$(TAG) -extldflags "-static"'
# This will build flannel natively using golang image
dist/flanneld-$(ARCH): deps dist/qemu-$(ARCH)-static
# valid values for ARCH are [amd64 arm arm64 ppc64le s390x riscv64]
docker run --rm -e CGO_ENABLED=$(CGO_ENABLED) -e GOARCH=$(ARCH) -e GOCACHE=/go \
-u $(shell id -u):$(shell id -g) \
-v $(CURDIR)/dist/qemu-$(ARCH)-static:/usr/bin/qemu-$(ARCH)-static \
-v $(CURDIR):/go/src/github.com/flannel-io/flannel:ro \
-v $(CURDIR)/dist:/go/src/github.com/flannel-io/flannel/dist \
golang:$(GO_VERSION) /bin/bash -c '\
cd /go/src/github.com/flannel-io/flannel && \
make -e dist/flanneld && \
mv dist/flanneld dist/flanneld-$(ARCH)'
## Create a docker image on disk for a specific arch and tag
image: deps dist/flanneld-$(TAG)-$(ARCH).docker
dist/flanneld-$(TAG)-$(ARCH).docker:
docker buildx build -f images/Dockerfile --platform=$(ARCH) --build-arg TAG=$(TAG) -t $(REGISTRY):$(TAG)-$(ARCH) --load .
docker save -o dist/flanneld-$(TAG)-$(ARCH).docker $(REGISTRY):$(TAG)-$(ARCH)
# amd64 gets an image without the suffix too (i.e. it's the default)
ifeq ($(ARCH),amd64)
docker build -f images/Dockerfile --platform=$(ARCH) --build-arg TAG=$(TAG) -t $(REGISTRY):$(TAG) .
endif
### TESTING
test: license-check gofmt deps verify-modules
make unit-test
# Test the docker-opts script
cd dist; ./mk-docker-opts_tests.sh
# Run the functional tests
make e2e-test
unit-test:
# Run the unit tests
# NET_ADMIN capacity is required to do some network operation
# SYS_ADMIN capacity is required to create network namespace
docker run --cap-add=NET_ADMIN \
--cap-add=SYS_ADMIN --rm \
-v $(shell pwd):/go/src/github.com/flannel-io/flannel \
golang:$(GO_VERSION) \
/bin/bash -c 'cd /go/src/github.com/flannel-io/flannel && go test -v -cover -timeout 5m $(TEST_PACKAGES_EXPANDED)'
e2e-test: bash_unit dist/flanneld-e2e-$(TAG)-$(ARCH).docker
$(MAKE) -C images/iperf3 ARCH=$(ARCH)
FLANNEL_DOCKER_IMAGE=$(REGISTRY):$(TAG)-$(ARCH) ./bash_unit dist/functional-test.sh
FLANNEL_DOCKER_IMAGE=$(REGISTRY):$(TAG)-$(ARCH) ./bash_unit dist/functional-test-k8s.sh
k3s-e2e-test: bash_unit dist/flanneld-e2e-$(TAG)-$(ARCH).docker
$(MAKE) -C images/iperf3 ARCH=$(ARCH)
./bash_unit ./e2e/run-e2e-tests.sh
cover:
# A single package must be given - e.g. 'PACKAGES=pkg/ip make cover'
go test -coverprofile cover.out $(PACKAGES_EXPANDED)
go tool cover -html=cover.out
license-check:
# run license-check script
dist/license-check.sh
# Throw an error if gofmt finds problems.
# "read" will return a failure return code if there is no output. This is inverted wth the "!"
gofmt:
# Running gofmt...
docker run --rm -e CGO_ENABLED=$(CGO_ENABLED) -e GOARCH=$(ARCH) \
-u $(shell id -u):$(shell id -g) \
-v $(CURDIR):/go/src/github.com/flannel-io/flannel \
-v $(CURDIR)/dist:/go/src/github.com/flannel-io/flannel/dist \
golang:$(GO_VERSION) /bin/bash -c '\
cd /go/src/github.com/flannel-io/flannel && \
! gofmt -d $(PACKAGES) 2>&1 | read'
verify-modules:
# Running verify-modules...
docker run --rm -e CGO_ENABLED=$(CGO_ENABLED) -e GOARCH=$(ARCH) \
-u $(shell id -u):$(shell id -g) \
-v $(CURDIR):/go/src/github.com/flannel-io/flannel \
-v $(CURDIR)/dist:/go/src/github.com/flannel-io/flannel/dist \
golang:$(GO_VERSION) /bin/bash -c '\
cd /go/src/github.com/flannel-io/flannel && \
!go mod tidy 2>&1|read && \
!go vet 2>&1|read'
bash_unit:
wget https://raw.githubusercontent.com/pgrange/bash_unit/$(BASH_UNIT_VERSION)/bash_unit
chmod +x bash_unit
# This will build flannel natively using golang image
dist/flanneld-e2e-$(TAG)-$(ARCH).docker:
ifneq ($(ARCH),amd64)
$(MAKE) dist/qemu-$(ARCH)-static
endif
# valid values for ARCH are [amd64 arm arm64 ppc64le s390x riscv64]
docker run --rm -e GOARM=$(GOARM) -e CGO_ENABLED=$(CGO_ENABLED) -e GOCACHE=/go \
-u $(shell id -u):$(shell id -g) \
-v $(CURDIR):/go/src/github.com/flannel-io/flannel:ro \
-v $(CURDIR)/dist:/go/src/github.com/flannel-io/flannel/dist \
golang:$(GO_VERSION) /bin/bash -c '\
cd /go/src/github.com/flannel-io/flannel && \
make -e dist/flanneld && \
mv dist/flanneld dist/flanneld-$(ARCH)'
docker build -f images/Dockerfile --platform=$(ARCH) --build-arg TAG=$(TAG) -t $(REGISTRY):$(TAG)-$(ARCH) .
# Make a release after creating a tag
# To build cross platform Docker images, the qemu-static binaries are needed. On ubuntu "apt-get install qemu-user-static"
release: tar.gz dist/qemu-s390x-static dist/qemu-ppc64le-static dist/qemu-arm64-static dist/qemu-arm-static dist/qemu-riscv64-static release-chart release-helm
ARCH=amd64 make dist/flanneld-$(TAG)-amd64.docker
ARCH=arm make dist/flanneld-$(TAG)-arm.docker
ARCH=arm64 make dist/flanneld-$(TAG)-arm64.docker
ARCH=ppc64le make dist/flanneld-$(TAG)-ppc64le.docker
ARCH=s390x make dist/flanneld-$(TAG)-s390x.docker
ARCH=riscv64 make dist/flanneld-$(TAG)-riscv64.docker
@echo "Everything should be built for $(TAG)"
@echo "Add all flanneld-* and *.tar.gz files from dist/ to the Github release"
@echo "Use make docker-push-all to push the images to a registry"
release-chart:
sed -i 's/^ newTag: .*/ newTag: $(TAG)/' Documentation/kustomization/kube-flannel/kustomization.yaml
kubectl kustomize ./Documentation/kustomization/kube-flannel/ > dist/kube-flannel.yml
sed -i 's/^ newTag: .*/ newTag: $(TAG)/' Documentation/kustomization/kube-flannel-psp/kustomization.yaml
kubectl kustomize ./Documentation/kustomization/kube-flannel-psp/ > dist/kube-flannel-psp.yml
release-helm:
sed -i '0,/^ tag: .*/s// tag: $(TAG)/' ./chart/kube-flannel/values.yaml
helm package ./chart/kube-flannel/ --destination chart/ --version $(TAG) --app-version $(TAG)
cp chart/flannel-$(TAG).tgz dist/flannel.tgz
mv chart/flannel-$(TAG).tgz chart/flannel.tgz
wget https://flannel-io.github.io/flannel/index.yaml -O chart/index.yaml
helm repo index --merge chart/index.yaml --url https://github.com/flannel-io/flannel/releases/download/$(TAG)/ chart/
dist/qemu-%-static:
if [ "$(@F)" = "qemu-amd64-static" ]; then \
wget -O dist/qemu-amd64-static https://github.com/multiarch/qemu-user-static/releases/download/$(QEMU_VERSION)/qemu-x86_64-static; \
elif [ "$(@F)" = "qemu-arm64-static" ]; then \
wget -O dist/qemu-arm64-static https://github.com/multiarch/qemu-user-static/releases/download/$(QEMU_VERSION)/qemu-aarch64-static; \
else \
wget -O dist/$(@F) https://github.com/multiarch/qemu-user-static/releases/download/$(QEMU_VERSION)/$(@F); \
fi
## Build a .tar.gz for the amd64 ppc64le arm arm64 riscv64 flanneld binary
tar.gz:
ARCH=amd64 make dist/flanneld-amd64
tar --transform='flags=r;s|-amd64||' -zcvf dist/flannel-$(TAG)-linux-amd64.tar.gz -C dist flanneld-amd64 mk-docker-opts.sh ../README.md
tar -tvf dist/flannel-$(TAG)-linux-amd64.tar.gz
ARCH=amd64 make dist/flanneld.exe
tar --transform='flags=r;s|-amd64||' -zcvf dist/flannel-$(TAG)-windows-amd64.tar.gz -C dist flanneld.exe mk-docker-opts.sh ../README.md
tar -tvf dist/flannel-$(TAG)-windows-amd64.tar.gz
ARCH=ppc64le make dist/flanneld-ppc64le
tar --transform='flags=r;s|-ppc64le||' -zcvf dist/flannel-$(TAG)-linux-ppc64le.tar.gz -C dist flanneld-ppc64le mk-docker-opts.sh ../README.md
tar -tvf dist/flannel-$(TAG)-linux-ppc64le.tar.gz
ARCH=arm make dist/flanneld-arm
tar --transform='flags=r;s|-arm||' -zcvf dist/flannel-$(TAG)-linux-arm.tar.gz -C dist flanneld-arm mk-docker-opts.sh ../README.md
tar -tvf dist/flannel-$(TAG)-linux-arm.tar.gz
ARCH=arm64 make dist/flanneld-arm64
tar --transform='flags=r;s|-arm64||' -zcvf dist/flannel-$(TAG)-linux-arm64.tar.gz -C dist flanneld-arm64 mk-docker-opts.sh ../README.md
tar -tvf dist/flannel-$(TAG)-linux-arm64.tar.gz
ARCH=s390x make dist/flanneld-s390x
tar --transform='flags=r;s|-s390x||' -zcvf dist/flannel-$(TAG)-linux-s390x.tar.gz -C dist flanneld-s390x mk-docker-opts.sh ../README.md
tar -tvf dist/flannel-$(TAG)-linux-s390x.tar.gz
ARCH=riscv64 make dist/flanneld-riscv64
tar --transform='flags=r;s|-riscv64||' -zcvf dist/flannel-$(TAG)-linux-riscv64.tar.gz -C dist flanneld-riscv64 mk-docker-opts.sh ../README.md
tar -tvf dist/flannel-$(TAG)-linux-riscv64.tar.gz
install:
# This is intended as just a developer convenience to help speed up non-containerized builds
# It is NOT how you install flannel
CGO_ENABLED=$(CGO_ENABLED) go install -v github.com/flannel-io/flannel
deps:
go mod tidy
go mod vendor
buildx-create-builder:
docker buildx create --name mybuilder --use --bootstrap
build-multi-arch:
docker buildx build --platform linux/amd64,linux/arm64,linux/arm,linux/s390x,linux/ppc64le,linux/riscv64 -t $(REGISTRY):$(TAG) -f images/Dockerfile --build-arg TAG=$(TAG) -o type=oci,dest=dist/flannel_oci.tar --progress plain .