Lightweight Kubernetes
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#!/bin/bash
set -e -x
cd $(dirname $0)/..
. ./scripts/version.sh
GO=${GO-go}
PKG="github.com/rancher/k3s"
PKG_CONTAINERD="github.com/containerd/containerd"
PKG_RANCHER_CONTAINERD="github.com/rancher/containerd"
PKG_CRICTL="github.com/kubernetes-sigs/cri-tools"
buildDate=$(date -u '+%Y-%m-%dT%H:%M:%SZ')
VENDOR_PREFIX="${PKG}/vendor/"
VERSIONFLAGS="
-X ${PKG}/pkg/version.Version=${VERSION}
-X ${PKG}/pkg/version.GitCommit=${COMMIT:0:8}
-X ${VENDOR_PREFIX}k8s.io/client-go/pkg/version.gitVersion=${VERSION}
-X ${VENDOR_PREFIX}k8s.io/client-go/pkg/version.gitCommit=${COMMIT}
-X ${VENDOR_PREFIX}k8s.io/client-go/pkg/version.gitTreeState=${TREE_STATE}
-X ${VENDOR_PREFIX}k8s.io/client-go/pkg/version.buildDate=${buildDate}
-X ${VENDOR_PREFIX}k8s.io/component-base/version.gitVersion=${VERSION}
-X ${VENDOR_PREFIX}k8s.io/component-base/version.gitCommit=${COMMIT}
-X ${VENDOR_PREFIX}k8s.io/component-base/version.gitTreeState=${TREE_STATE}
-X ${VENDOR_PREFIX}k8s.io/component-base/version.buildDate=${buildDate}
-X ${VENDOR_PREFIX}${PKG_CONTAINERD}/version.Version=${VERSION_CONTAINERD}
-X ${VENDOR_PREFIX}${PKG_CONTAINERD}/version.Package=${PKG_RANCHER_CONTAINERD}
-X ${VENDOR_PREFIX}${PKG_CRICTL}/pkg/version.Version=${VERSION_CRICTL}
"
LDFLAGS="
-w -s"
STATIC="
-extldflags '-static'
"
if [ "$DQLITE" = "true" ]; then
DQLITE_TAGS="dqlite"
DQLITE_STATIC_SQLITE="-luv -lraft -lco"
fi
STATIC_SQLITE="
-extldflags '-static -lm -ldl -lz -lpthread $DQLITE_STATIC_SQLITE'
"
TAGS="ctrd apparmor seccomp no_btrfs netcgo osusergo providerless $DQLITE_TAGS"
RUNC_TAGS="apparmor seccomp"
RUNC_STATIC="static"
if [ "$SELINUX" = "true" ]; then
TAGS="$TAGS selinux"
RUNC_TAGS="$RUNC_TAGS selinux"
fi
if [ "$STATIC_BUILD" != "true" ]; then
STATIC="
"
STATIC_SQLITE="
"
RUNC_STATIC=""
else
TAGS="static_build libsqlite3 $TAGS"
fi
mkdir -p bin
if [ -z "$GOARM" ] && [ "arm" = "$("${GO}" env GOARCH)" ]; then
GOARM=7
fi
rm -f \
bin/k3s-agent \
bin/hyperkube \
bin/containerd \
bin/runc \
bin/containerd-shim \
bin/containerd-shim-runc-v1 \
bin/containerd-shim-runc-v2 \
bin/k3s-server \
bin/kubectl \
bin/crictl \
bin/ctr
cleanup() {
exit_status=$?
rm -rf $TMPDIR
exit ${exit_status}
}
INSTALLBIN=$(pwd)/bin
if [ ! -x ${INSTALLBIN}/cni ]; then
(
echo Building cni
TMPDIR=$(mktemp -d)
trap cleanup EXIT
WORKDIR=$TMPDIR/src/github.com/containernetworking/plugins
git clone -b $VERSION_CNIPLUGINS https://github.com/rancher/plugins.git $WORKDIR
cd $WORKDIR
GOPATH=$TMPDIR CGO_ENABLED=0 "${GO}" build -tags "$TAGS" -ldflags "$LDFLAGS $STATIC" -o $INSTALLBIN/cni
)
fi
# echo Building agent
# CGO_ENABLED=1 "${GO}" build -tags "$TAGS" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC" -o bin/k3s-agent ./cmd/agent/main.go
echo Building server
CGO_ENABLED=1 "${GO}" build -tags "$TAGS" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC_SQLITE" -o bin/containerd ./cmd/server/main.go
ln -s containerd ./bin/k3s-agent
ln -s containerd ./bin/k3s-server
ln -s containerd ./bin/kubectl
ln -s containerd ./bin/crictl
ln -s containerd ./bin/ctr
#echo Building hyperkube
#CGO_ENABLED=1 "${GO}" build -tags "$TAGS" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC_SQLITE" -o bin/hyperkube ./vendor/k8s.io/kubernetes/cmd/hyperkube/
#echo Building ctr
#CGO_ENABLED=1 "${GO}" build -tags "$TAGS" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC_SQLITE" -o bin/ctr ./cmd/ctr/main.go
# echo Building containerd
# CGO_ENABLED=0 "${GO}" build -tags "$TAGS" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC" -o bin/containerd ./cmd/containerd/
echo Building runc
rm -f ./vendor/github.com/opencontainers/runc/runc
make EXTRA_LDFLAGS="-w -s" BUILDTAGS="$RUNC_TAGS" -C ./vendor/github.com/opencontainers/runc $RUNC_STATIC
cp -f ./vendor/github.com/opencontainers/runc/runc ./bin/runc
echo Building containerd-shim
rm -f ./vendor/github.com/containerd/containerd/bin/containerd-shim
make -C ./vendor/github.com/containerd/containerd bin/containerd-shim
cp -f ./vendor/github.com/containerd/containerd/bin/containerd-shim ./bin/containerd-shim
echo Building containerd-shim-runc-v2
rm -f ./vendor/github.com/containerd/containerd/bin/containerd-shim-runc-v2
make -C ./vendor/github.com/containerd/containerd bin/containerd-shim-runc-v2
cp -f ./vendor/github.com/containerd/containerd/bin/containerd-shim-runc-v2 ./bin/containerd-shim-runc-v2