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get-kube.sh
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get-kube.sh
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#!/bin/bash
# Copyright 2014 The Kubernetes 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.
# Bring up a Kubernetes cluster.
# Usage:
# wget -q -O - https://get.k8s.io | bash
# or
# curl -sS https://get.k8s.io | bash
#
# Advanced options
# Set KUBERNETES_PROVIDER to choose between different providers:
# Google Compute Engine [default]
# * export KUBERNETES_PROVIDER=gce; wget -q -O - https://get.k8s.io | bash
# Google Container Engine
# * export KUBERNETES_PROVIDER=gke; wget -q -O - https://get.k8s.io | bash
# Amazon EC2
# * export KUBERNETES_PROVIDER=aws; wget -q -O - https://get.k8s.io | bash
# Libvirt (with CoreOS as a guest operating system)
# * export KUBERNETES_PROVIDER=libvirt-coreos; wget -q -O - https://get.k8s.io | bash
# Microsoft Azure
# * export KUBERNETES_PROVIDER=azure-legacy; wget -q -O - https://get.k8s.io | bash
# Vagrant (local virtual machines)
# * export KUBERNETES_PROVIDER=vagrant; wget -q -O - https://get.k8s.io | bash
# VMWare VSphere
# * export KUBERNETES_PROVIDER=vsphere; wget -q -O - https://get.k8s.io | bash
# VMWare Photon Controller
# * export KUBERNETES_PROVIDER=photon-controller; wget -q -O - https://get.k8s.io | bash
# Rackspace
# * export KUBERNETES_PROVIDER=rackspace; wget -q -O - https://get.k8s.io | bash
# OpenStack-Heat
# * export KUBERNETES_PROVIDER=openstack-heat; wget -q -O - https://get.k8s.io | bash
#
# Set KUBERNETES_SKIP_DOWNLOAD to non-empty to skip downloading a release.
# Set KUBERNETES_SKIP_CONFIRM to skip the installation confirmation prompt.
# Set KUBERNETES_RELEASE to the release you want to use (e.g. 'v1.2.0'). See https://github.com/kubernetes/kubernetes/releases for release options
set -o errexit
set -o nounset
set -o pipefail
function create_cluster {
echo "Creating a kubernetes on ${KUBERNETES_PROVIDER:-gce}..."
(
cd kubernetes
./cluster/kube-up.sh
echo "Kubernetes binaries at ${PWD}/cluster/"
if [[ ":$PATH:" != *":${PWD}/cluster:"* ]]; then
echo "You may want to add this directory to your PATH in \$HOME/.profile"
fi
echo "Installation successful!"
)
}
if [[ "${KUBERNETES_SKIP_DOWNLOAD-}" ]]; then
create_cluster
exit 0
fi
if [[ -d "./kubernetes" ]]; then
if [[ -n "${KUBERNETES_SKIP_CONFIRM-}" ]]; then
echo "'kubernetes' directory already exist. Should we skip download step and start to create cluster based on it? [Y]/n"
read confirm
if [[ "$confirm" == "y" ]]; then
echo "Skipping download step."
create_cluster
exit 0
fi
fi
fi
function get_latest_version_number {
local -r latest_url="https://storage.googleapis.com/kubernetes-release/release/stable.txt"
if [[ $(which wget) ]]; then
wget -qO- ${latest_url}
elif [[ $(which curl) ]]; then
curl -Ss ${latest_url}
else
echo "Couldn't find curl or wget. Bailing out." >&2
exit 4
fi
}
release=${KUBERNETES_RELEASE:-$(get_latest_version_number)}
release_url=https://storage.googleapis.com/kubernetes-release/release/${release}/kubernetes.tar.gz
uname=$(uname)
if [[ "${uname}" == "Darwin" ]]; then
platform="darwin"
elif [[ "${uname}" == "Linux" ]]; then
platform="linux"
else
echo "Unknown, unsupported platform: (${uname})."
echo "Supported platforms: Linux, Darwin."
echo "Bailing out."
exit 2
fi
machine=$(uname -m)
if [[ "${machine}" == "x86_64" ]]; then
arch="amd64"
elif [[ "${machine}" == "i686" ]]; then
arch="386"
elif [[ "${machine}" == "arm*" ]]; then
arch="arm"
elif [[ "${machine}" == "s390x*" ]]; then
arch="s390x"
elif [[ "${machine}" == "ppc64le" ]]; then
arch="ppc64le"
else
echo "Unknown, unsupported architecture (${machine})."
echo "Supported architectures x86_64, i686, arm, s390x, ppc64le."
echo "Bailing out."
exit 3
fi
file=kubernetes.tar.gz
echo "Downloading kubernetes release ${release} to ${PWD}/kubernetes.tar.gz"
if [[ -n "${KUBERNETES_SKIP_CONFIRM-}" ]]; then
echo "Is this ok? [Y]/n"
read confirm
if [[ "$confirm" == "n" ]]; then
echo "Aborting."
exit 0
fi
fi
if [[ $(which wget) ]]; then
wget -N ${release_url}
elif [[ $(which curl) ]]; then
curl -L -z ${file} ${release_url} -o ${file}
else
echo "Couldn't find curl or wget. Bailing out."
exit 1
fi
echo "Unpacking kubernetes release ${release}"
tar -xzf ${file}
create_cluster