mirror of
https://github.com/k3s-io/kubernetes.git
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227 lines
6.6 KiB
Bash
Executable File
227 lines
6.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2016 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This script downloads and installs the Kubernetes client and server
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# (and optionally test) binaries,
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# It is intended to be called from an extracted Kubernetes release tarball.
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#
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# We automatically choose the correct client binaries to download.
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#
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# Options:
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# Set KUBERNETES_SERVER_ARCH to choose the server (Kubernetes cluster)
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# architecture to download:
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# * amd64 [default]
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# * arm
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# * arm64
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# * ppc64le
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# * s390x
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#
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# Set KUBERNETES_SKIP_CONFIRM to skip the installation confirmation prompt.
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# Set KUBERNETES_RELEASE_URL to choose where to download binaries from.
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# (Defaults to https://storage.googleapis.com/kubernetes-release/release).
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# Set KUBERNETES_DOWNLOAD_TESTS to additionally download and extract the test
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# binaries tarball.
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set -o errexit
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set -o nounset
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set -o pipefail
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KUBE_ROOT=$(cd $(dirname "${BASH_SOURCE}")/.. && pwd)
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KUBERNETES_RELEASE_URL="${KUBERNETES_RELEASE_URL:-https://dl.k8s.io}"
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function detect_kube_release() {
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if [[ -n "${KUBE_VERSION:-}" ]]; then
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return 0 # Allow caller to explicitly set version
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fi
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if [[ ! -e "${KUBE_ROOT}/version" ]]; then
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echo "Can't determine Kubernetes release." >&2
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echo "${BASH_SOURCE} should only be run from a prebuilt Kubernetes release." >&2
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echo "Did you mean to use get-kube.sh instead?" >&2
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exit 1
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fi
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KUBE_VERSION=$(cat "${KUBE_ROOT}/version")
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}
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function detect_client_info() {
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local kernel=$(uname -s)
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case "${kernel}" in
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Darwin)
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CLIENT_PLATFORM="darwin"
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;;
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Linux)
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CLIENT_PLATFORM="linux"
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;;
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*)
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echo "Unknown, unsupported platform: ${kernel}." >&2
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echo "Supported platforms: Linux, Darwin." >&2
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echo "Bailing out." >&2
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exit 2
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esac
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# TODO: migrate the kube::util::host_platform function out of hack/lib and
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# use it here.
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local machine=$(uname -m)
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case "${machine}" in
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x86_64*|i?86_64*|amd64*)
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CLIENT_ARCH="amd64"
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;;
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aarch64*|arm64*)
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CLIENT_ARCH="arm64"
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;;
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arm*)
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CLIENT_ARCH="arm"
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;;
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i?86*)
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CLIENT_ARCH="386"
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;;
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s390x*)
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CLIENT_ARCH="s390x"
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;;
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*)
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echo "Unknown, unsupported architecture (${machine})." >&2
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echo "Supported architectures x86_64, i686, arm, arm64, s390x." >&2
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echo "Bailing out." >&2
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exit 3
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;;
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esac
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}
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function md5sum_file() {
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if which md5 >/dev/null 2>&1; then
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md5 -q "$1"
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else
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md5sum "$1" | awk '{ print $1 }'
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fi
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}
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function sha1sum_file() {
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if which sha1sum >/dev/null 2>&1; then
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sha1sum "$1" | awk '{ print $1 }'
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else
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shasum -a1 "$1" | awk '{ print $1 }'
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fi
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}
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function download_tarball() {
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local -r download_path="$1"
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local -r file="$2"
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url="${DOWNLOAD_URL_PREFIX}/${file}"
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mkdir -p "${download_path}"
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if [[ $(which curl) ]]; then
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curl -fL --retry 3 --keepalive-time 2 "${url}" -o "${download_path}/${file}"
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elif [[ $(which wget) ]]; then
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wget "${url}" -O "${download_path}/${file}"
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else
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echo "Couldn't find curl or wget. Bailing out." >&2
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exit 4
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fi
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echo
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local md5sum=$(md5sum_file "${download_path}/${file}")
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echo "md5sum(${file})=${md5sum}"
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local sha1sum=$(sha1sum_file "${download_path}/${file}")
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echo "sha1sum(${file})=${sha1sum}"
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echo
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# TODO: add actual verification
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}
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function extract_arch_tarball() {
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local -r tarfile="$1"
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local -r platform="$2"
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local -r arch="$3"
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platforms_dir="${KUBE_ROOT}/platforms/${platform}/${arch}"
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echo "Extracting ${tarfile} into ${platforms_dir}"
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mkdir -p "${platforms_dir}"
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# Tarball looks like kubernetes/{client,server}/bin/BINARY"
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tar -xzf "${tarfile}" --strip-components 3 -C "${platforms_dir}"
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# Create convenience symlink
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ln -sf "${platforms_dir}" "$(dirname ${tarfile})/bin"
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echo "Add '$(dirname ${tarfile})/bin' to your PATH to use newly-installed binaries."
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}
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detect_kube_release
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DOWNLOAD_URL_PREFIX="${KUBERNETES_RELEASE_URL}/${KUBE_VERSION}"
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SERVER_PLATFORM="linux"
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SERVER_ARCH="${KUBERNETES_SERVER_ARCH:-amd64}"
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SERVER_TAR="kubernetes-server-${SERVER_PLATFORM}-${SERVER_ARCH}.tar.gz"
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detect_client_info
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CLIENT_TAR="kubernetes-client-${CLIENT_PLATFORM}-${CLIENT_ARCH}.tar.gz"
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echo "Kubernetes release: ${KUBE_VERSION}"
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echo "Server: ${SERVER_PLATFORM}/${SERVER_ARCH} (to override, set KUBERNETES_SERVER_ARCH)"
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echo "Client: ${CLIENT_PLATFORM}/${CLIENT_ARCH} (autodetected)"
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echo
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# TODO: remove this check and default to true when we stop shipping server
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# tarballs in kubernetes.tar.gz
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DOWNLOAD_SERVER_TAR=false
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if [[ ! -e "${KUBE_ROOT}/server/${SERVER_TAR}" ]]; then
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DOWNLOAD_SERVER_TAR=true
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echo "Will download ${SERVER_TAR} from ${DOWNLOAD_URL_PREFIX}"
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fi
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# TODO: remove this check and default to true when we stop shipping kubectl
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# in kubernetes.tar.gz
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DOWNLOAD_CLIENT_TAR=false
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if [[ ! -x "${KUBE_ROOT}/platforms/${CLIENT_PLATFORM}/${CLIENT_ARCH}/kubectl" ]]; then
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DOWNLOAD_CLIENT_TAR=true
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echo "Will download and extract ${CLIENT_TAR} from ${DOWNLOAD_URL_PREFIX}"
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fi
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TESTS_TAR="kubernetes-test.tar.gz"
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DOWNLOAD_TESTS_TAR=false
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if [[ -n "${KUBERNETES_DOWNLOAD_TESTS-}" ]]; then
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DOWNLOAD_TESTS_TAR=true
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echo "Will download and extract ${TESTS_TAR} from ${DOWNLOAD_URL_PREFIX}"
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fi
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if [[ "${DOWNLOAD_CLIENT_TAR}" == false && \
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"${DOWNLOAD_SERVER_TAR}" == false && \
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"${DOWNLOAD_TESTS_TAR}" == false ]]; then
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echo "Nothing additional to download."
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exit 0
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fi
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if [[ -z "${KUBERNETES_SKIP_CONFIRM-}" ]]; then
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echo "Is this ok? [Y]/n"
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read confirm
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if [[ "${confirm}" =~ ^[nN]$ ]]; then
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echo "Aborting."
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exit 1
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fi
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fi
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if "${DOWNLOAD_SERVER_TAR}"; then
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download_tarball "${KUBE_ROOT}/server" "${SERVER_TAR}"
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fi
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if "${DOWNLOAD_CLIENT_TAR}"; then
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download_tarball "${KUBE_ROOT}/client" "${CLIENT_TAR}"
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extract_arch_tarball "${KUBE_ROOT}/client/${CLIENT_TAR}" "${CLIENT_PLATFORM}" "${CLIENT_ARCH}"
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fi
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if "${DOWNLOAD_TESTS_TAR}"; then
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download_tarball "${KUBE_ROOT}/test" "${TESTS_TAR}"
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echo "Extracting ${TESTS_TAR} into ${KUBE_ROOT}"
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# Strip leading "kubernetes/"
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tar -xzf "${KUBE_ROOT}/test/${TESTS_TAR}" --strip-components 1 -C "${KUBE_ROOT}"
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fi
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