Build Multi-arch rpms

rpm/Dockerfile

@@ -8,5 +8,4 @@ RUN rpmdev-setuptree
 USER root
 ADD entry.sh /root/
 COPY ./ /root/rpmbuild/SPECS
-CMD ["/root/entry.sh"]
-
+ENTRYPOINT ["/root/entry.sh"]

rpm/docker-build.sh

@@ -5,13 +5,14 @@ docker build -t kubelet-rpm-builder .
 echo "Cleaning output directory..."
 sudo rm -rf output/*
 mkdir -p output
-docker run -ti --rm -v $PWD/output/:/root/rpmbuild/RPMS/ kubelet-rpm-builder
+docker run -ti --rm -v $PWD/output/:/root/rpmbuild/RPMS/ kubelet-rpm-builder $1
 sudo chown -R $USER $PWD/output
 
 echo
 echo "----------------------------------------"
 echo
-echo "RPMs written to: $PWD/output/x86_64/"
-ls $PWD/output/x86_64/
+echo "RPMs written to: "
+ls $PWD/output/*/
 echo
-echo "Yum repodata written to: $PWD/output/x86_64/yum/"
+echo "Yum repodata written to: "
+ls $PWD/output/*/repodata/

rpm/entry.sh

@@ -1,11 +1,34 @@
 #!/bin/sh
 # Entrypoint for the build container to create the rpms and yum repodata:
+# Usage: ./entry.sh GOARCH/RPMARCH,GOARCH/RPMARCH,....
 
 set -e
-# Download sources if not already available
-cd /root/rpmbuild/SPECS  && spectool -gf kubelet.spec
 
-/usr/bin/rpmbuild --define "_sourcedir /root/rpmbuild/SPECS/" -bb /root/rpmbuild/SPECS/kubelet.spec
+declare -a ARCHS
 
-mkdir -p /root/rpmbuild/RPMS/x86_64/
-createrepo -o /root/rpmbuild/RPMS/x86_64/ /root/rpmbuild/RPMS/x86_64
+if [ $# -gt 0 ]; then
+  IFS=','; ARCHS=($1); unset IFS;
+else
+  #GOARCH/RPMARCH
+  ARCHS=(
+    amd64/x86_64
+    arm/armhfp
+    arm64/aarch64
+    ppc64le/ppc64le
+    s390x/s390x
+  )
+fi
+
+for ARCH in ${ARCHS[@]}; do
+  IFS=/ read GOARCH RPMARCH<<< ${ARCH}; unset IFS;
+  SRC_PATH="/root/rpmbuild/SOURCES/${RPMARCH}"
+  mkdir -p ${SRC_PATH}
+  cp -r /root/rpmbuild/SPECS/* ${SRC_PATH}
+  echo "Building RPM's for ${GOARCH}....."
+  sed -i "s/\%global ARCH.*/\%global ARCH ${GOARCH}/" ${SRC_PATH}/kubelet.spec
+  # Download sources if not already available
+  cd ${SRC_PATH} && spectool -gf kubelet.spec
+  /usr/bin/rpmbuild --target ${RPMARCH} --define "_sourcedir ${SRC_PATH}" -bb ${SRC_PATH}/kubelet.spec
+  mkdir -p /root/rpmbuild/RPMS/${RPMARCH}
+  createrepo -o /root/rpmbuild/RPMS/${RPMARCH}/ /root/rpmbuild/RPMS/${RPMARCH}
+done

rpm/kubelet.spec

@@ -1,6 +1,7 @@
 %global KUBE_VERSION 1.6.0
 %global CNI_RELEASE 0799f5732f2a11b329d9e3d51b9c8f2e3759f2ff
 %global RPM_RELEASE 0
+%global ARCH amd64
 
 Name: kubelet
 Version: %{KUBE_VERSION}
@@ -9,12 +10,12 @@ Summary: Container cluster management
 License: ASL 2.0
 
 URL: https://kubernetes.io
-Source0: https://dl.k8s.io/v%{KUBE_VERSION}/bin/linux/amd64/kubelet
+Source0: https://dl.k8s.io/v%{KUBE_VERSION}/bin/linux/%{ARCH}/kubelet
 Source1: kubelet.service
-Source2: https://dl.k8s.io/v%{KUBE_VERSION}/bin/linux/amd64/kubectl
-Source3: https://dl.k8s.io/v%{KUBE_VERSION}/bin/linux/amd64/kubeadm
+Source2: https://dl.k8s.io/v%{KUBE_VERSION}/bin/linux/%{ARCH}/kubectl
+Source3: https://dl.k8s.io/v%{KUBE_VERSION}/bin/linux/%{ARCH}/kubeadm
 Source4: 10-kubeadm.conf
-Source5: https://dl.k8s.io/network-plugins/cni-amd64-%{CNI_RELEASE}.tar.gz
+Source5: https://dl.k8s.io/network-plugins/cni-%{ARCH}-%{CNI_RELEASE}.tar.gz
 
 
 BuildRequires: curl