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Merge pull request #18425 from fgrzadkowski/local_script
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168
cluster/get-kube-local.sh
Executable file
168
cluster/get-kube-local.sh
Executable file
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#!/bin/bash
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# Copyright 2014 The Kubernetes Authors All rights reserved.
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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 will download latest version of kubectl command line tool and will
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# bring up a local Kubernetes cluster with a single node.
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#
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# Usage:
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# wget -q -O - https://get.k8s.io/local | bash
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# or
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# curl -sS https://get.k8s.io/local | bash
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#
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# On Mac OS X you'll have to additionally pass env variable:
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# wget -q -O - https://get.k8s.io/local | KUBE_HOST=<docker_machine_ip> bash -c
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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_HOST=${KUBE_HOST:-localhost}
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RED="\033[0;31m"
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GREEN="\033[0;32m"
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ORANGE="\033[0;33m"
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function echo_green {
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echo -e "${GREEN}$1"; tput sgr0
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}
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function echo_red {
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echo -e "${RED}$1"; tput sgr0
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}
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function echo_orange {
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echo -e "${ORANGE}$1"; tput sgr0
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}
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function run {
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output=`$1 2>&1 || true`
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if [ $? -eq 0 ]; then
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echo_green "SUCCESS"
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else
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echo_red "FAILED"
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echo $output >&2
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exit 1
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fi
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}
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function create_cluster {
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echo "Creating a local cluster:"
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echo -e -n "\tStarting kubelet..."
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run "docker run \
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--volume=/:/rootfs:ro \
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--volume=/sys:/sys:ro \
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--volume=/dev:/dev \
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--volume=/var/lib/docker/:/var/lib/docker:rw \
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--volume=/var/lib/kubelet/:/var/lib/kubelet:rw \
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--volume=/var/run:/var/run:rw \
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--net=host \
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--pid=host \
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--privileged=true \
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-d \
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gcr.io/google_containers/hyperkube-${arch}:${release} \
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/hyperkube kubelet \
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--containerized \
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--hostname-override="127.0.0.1" \
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--address="0.0.0.0" \
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--api-servers=http://localhost:8080 \
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--config=/etc/kubernetes/manifests \
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--allow-privileged=true \
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--v=2"
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echo -e -n "\tWaiting for master components to start..."
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while true; do
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local running_count=`kubectl -s=http://${KUBE_HOST}:8080 get pods --no-headers 2>/dev/null | grep "Running" | wc -l`
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# We expect to have 3 running pods - etcd, master and kube-proxy.
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if [ "$running_count" -ge 3 ]; then
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break
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fi
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echo -n "."
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sleep 1
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done
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echo_green "SUCCESS"
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echo_green "Cluster created!"
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echo ""
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kubectl -s http://${KUBE_HOST}:8080 clusterinfo
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}
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function get_latest_version_number {
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local -r latest_url="https://storage.googleapis.com/kubernetes-release/release/stable.txt"
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if [[ $(which wget) ]]; then
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wget -qO- ${latest_url}
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elif [[ $(which curl) ]]; then
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curl -Ss ${latest_url}
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else
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echo_red "Couldn't find curl or wget. Bailing out."
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exit 4
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fi
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}
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release=$(get_latest_version_number)
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uname=$(uname)
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if [[ "${uname}" == "Darwin" ]]; then
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platform="darwin"
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elif [[ "${uname}" == "Linux" ]]; then
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platform="linux"
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else
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echo_red "Unknown, unsupported platform: (${uname})."
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echo_red "Supported platforms: Linux, Darwin."
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echo_red "Bailing out."
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exit 2
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fi
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machine=$(uname -m)
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if [[ "${machine}" == "x86_64" ]]; then
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arch="amd64"
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elif [[ "${machine}" == "i686" ]]; then
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arch="386"
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elif [[ "${machine}" == "arm*" ]]; then
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arch="arm"
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elif [[ "${machine}" == "s390x*" ]]; then
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arch="s390x"
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else
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echo_red "Unknown, unsupported architecture (${machine})."
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echo_red "Supported architectures x86_64, i686, arm, s390x."
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echo_red "Bailing out."
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exit 3
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fi
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kubectl_url=https://storage.googleapis.com/kubernetes-release/release/${release}/bin/${platform}/${arch}/kubectl
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if [[ `ls . | grep ^kubectl$ | wc -l` -lt 1 ]]; then
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echo -n "Downloading kubectl binary..."
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if [[ $(which wget) ]]; then
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run "wget ${kubectl_url}"
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elif [[ $(which curl) ]]; then
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run "curl -L ${kubectl_url}"
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else
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echo_red "Couldn't find curl or wget. Bailing out."
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exit 1
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fi
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chmod a+x kubectl
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echo ""
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else
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echo "Detected existing kubectl binary. Skipping download."
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fi
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create_cluster
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echo ""
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echo ""
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echo "To list the nodes in your cluster run"
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echo_orange "\tkubectl -s=http://${KUBE_HOST}:8080 get nodes"
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echo ""
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echo "To run your first pod run"
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echo_orange "\tkubectl -s http://${KUBE_HOST}:8080 run nginx --image=nginx --port=80"
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