#!/bin/sh # Copyright Istio Authors # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # # This file will be fetched as: curl -L https://git.io/getLatestIstio | sh - # so it should be pure bourne shell, not bash (and not reference other scripts) # # The script fetches the latest Istio release candidate and untars it. # You can pass variables on the command line to download a specific version # or to override the processor architecture. For example, to download # Istio 1.6.8 for the x86_64 architecture, # run curl -L https://istio.io/downloadIstio | ISTIO_VERSION=1.6.8 TARGET_ARCH=x86_64 sh -. set -e # Determines the operating system. OS="$(uname)" if [ "x${OS}" = "xDarwin" ] ; then OSEXT="osx" else OSEXT="linux" fi # Determine the latest Istio version by version number ignoring alpha, beta, and rc versions. if [ "x${ISTIO_VERSION}" = "x" ] ; then ISTIO_VERSION="$(curl -sL https://github.com/istio/istio/releases | \ grep -o 'releases/[0-9]*.[0-9]*.[0-9]*/' | sort --version-sort | \ tail -1 | awk -F'/' '{ print $2}')" ISTIO_VERSION="${ISTIO_VERSION##*/}" fi LOCAL_ARCH=$(uname -m) if [ "${TARGET_ARCH}" ]; then LOCAL_ARCH=${TARGET_ARCH} fi case "${LOCAL_ARCH}" in x86_64) ISTIO_ARCH=amd64 ;; armv8*) ISTIO_ARCH=arm64 ;; aarch64*) ISTIO_ARCH=arm64 ;; armv*) ISTIO_ARCH=armv7 ;; amd64|arm64) ISTIO_ARCH=${LOCAL_ARCH} ;; *) echo "This system's architecture, ${LOCAL_ARCH}, isn't supported" exit 1 ;; esac if [ "x${ISTIO_VERSION}" = "x" ] ; then printf "Unable to get latest Istio version. Set ISTIO_VERSION env var and re-run. For example: export ISTIO_VERSION=1.0.4" exit; fi NAME="istio-$ISTIO_VERSION" URL="https://github.com/istio/istio/releases/download/${ISTIO_VERSION}/istio-${ISTIO_VERSION}-${OSEXT}.tar.gz" ARCH_URL="https://github.com/istio/istio/releases/download/${ISTIO_VERSION}/istio-${ISTIO_VERSION}-${OSEXT}-${ISTIO_ARCH}.tar.gz" with_arch() { printf "\nDownloading %s from %s ...\n" "$NAME" "$ARCH_URL" if ! curl -o /dev/null -sIf "$ARCH_URL"; then printf "\n%s is not found, please specify a valid ISTIO_VERSION and TARGET_ARCH\n" "$ARCH_URL" exit fi curl -fsLO "$ARCH_URL" filename="istio-${ISTIO_VERSION}-${OSEXT}-${ISTIO_ARCH}.tar.gz" tar -xzf "${filename}" rm "${filename}" } without_arch() { printf "\nDownloading %s from %s ..." "$NAME" "$URL" if ! curl -o /dev/null -sIf "$URL"; then printf "\n%s is not found, please specify a valid ISTIO_VERSION\n" "$URL" exit fi curl -fsLO "$URL" filename="istio-${ISTIO_VERSION}-${OSEXT}.tar.gz" tar -xzf "${filename}" rm "${filename}" } # Istio 1.6 and above support arch ARCH_SUPPORTED=$(echo "$ISTIO_VERSION" | awk '{ ARCH_SUPPORTED=substr($0, 1, 3); print ARCH_SUPPORTED; }' ) # Istio 1.5 and below do not have arch support ARCH_UNSUPPORTED="1.5" if [ "${OS}" = "Linux" ] ; then # This checks if 1.6 <= 1.5 or 1.4 <= 1.5 if [ "$(expr "${ARCH_SUPPORTED}" \<= "${ARCH_UNSUPPORTED}")" -eq 1 ]; then without_arch else with_arch fi elif [ "x${OS}" = "xDarwin" ] ; then without_arch else printf "\n\n" printf "Unable to download Istio %s at this moment!\n" "$ISTIO_VERSION" printf "Please verify the version you are trying to download.\n\n" exit fi printf "" printf "\nIstio %s Download Complete!\n" "$ISTIO_VERSION" printf "\n" printf "Istio has been successfully downloaded into the %s folder on your system.\n" "$NAME" printf "\n" BINDIR="$(cd "$NAME/bin" && pwd)" printf "Next Steps:\n" printf "See https://istio.io/latest/docs/setup/install/ to add Istio to your Kubernetes cluster.\n" printf "\n" printf "To configure the istioctl client tool for your workstation,\n" printf "add the %s directory to your environment path variable with:\n" "$BINDIR" printf "\t export PATH=\"\$PATH:%s\"\n" "$BINDIR" printf "\n" printf "Begin the Istio pre-installation check by running:\n" printf "\t istioctl x precheck \n" printf "\n" printf "Need more information? Visit https://istio.io/latest/docs/setup/install/ \n"