mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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479 lines
16 KiB
Bash
Executable File
479 lines
16 KiB
Bash
Executable File
#!/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 command builds and runs a local kubernetes cluster. It's just like
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# local-up.sh, but this one launches the three separate binaries.
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# You may need to run this as root to allow kubelet to open docker's socket.
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DOCKER_OPTS=${DOCKER_OPTS:-""}
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DOCKER_NATIVE=${DOCKER_NATIVE:-""}
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DOCKER=(docker ${DOCKER_OPTS})
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DOCKERIZE_KUBELET=${DOCKERIZE_KUBELET:-""}
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ALLOW_PRIVILEGED=${ALLOW_PRIVILEGED:-""}
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ALLOW_SECURITY_CONTEXT=${ALLOW_SECURITY_CONTEXT:-""}
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RUNTIME_CONFIG=${RUNTIME_CONFIG:-""}
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NET_PLUGIN=${NET_PLUGIN:-""}
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NET_PLUGIN_DIR=${NET_PLUGIN_DIR:-""}
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KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
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# We disable cluster DNS by default because this script uses docker0 (or whatever
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# container bridge docker is currently using) and we don't know the IP of the
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# DNS pod to pass in as --cluster-dns. To set this up by hand, set this flag
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# and change DNS_SERVER_IP to the appropriate IP.
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ENABLE_CLUSTER_DNS=${KUBE_ENABLE_CLUSTER_DNS:-false}
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DNS_SERVER_IP=${KUBE_DNS_SERVER_IP:-10.0.0.10}
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DNS_DOMAIN=${KUBE_DNS_NAME:-"cluster.local"}
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DNS_REPLICAS=${KUBE_DNS_REPLICAS:-1}
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KUBECTL=${KUBECTL:-cluster/kubectl.sh}
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WAIT_FOR_URL_API_SERVER=${WAIT_FOR_URL_API_SERVER:-10}
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ENABLE_DAEMON=${ENABLE_DAEMON:-false}
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HOSTNAME_OVERRIDE=${HOSTNAME_OVERRIDE:-"127.0.0.1"}
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CLOUD_PROVIDER=${CLOUD_PROVIDER:-""}
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if [ "$(id -u)" != "0" ]; then
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echo "WARNING : This script MAY be run as root for docker socket / iptables functionality; if failures occur, retry as root." 2>&1
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fi
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# Stop right away if the build fails
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set -e
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source "${KUBE_ROOT}/hack/lib/init.sh"
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function usage {
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echo "This script starts a local kube cluster. "
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echo "Example 1: hack/local-up-cluster.sh -o _output/dockerized/bin/linux/amd64/ (run from docker output)"
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echo "Example 2: hack/local-up-cluster.sh (build a local copy of the source)"
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}
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### Allow user to supply the source directory.
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GO_OUT=""
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while getopts "o:" OPTION
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do
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case $OPTION in
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o)
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echo "skipping build"
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echo "using source $OPTARG"
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GO_OUT="$OPTARG"
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if [ $GO_OUT == "" ]; then
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echo "You provided an invalid value for the build output directory."
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exit
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fi
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;;
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?)
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usage
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exit
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;;
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esac
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done
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if [ "x$GO_OUT" == "x" ]; then
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"${KUBE_ROOT}/hack/build-go.sh" \
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cmd/kubectl \
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cmd/hyperkube
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else
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echo "skipped the build."
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fi
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function test_docker {
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${DOCKER[@]} ps 2> /dev/null 1> /dev/null
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if [ "$?" != "0" ]; then
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echo "Failed to successfully run 'docker ps', please verify that docker is installed and \$DOCKER_HOST is set correctly."
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exit 1
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fi
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}
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function test_openssl_installed {
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openssl version >& /dev/null
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if [ "$?" != "0" ]; then
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echo "Failed to run openssl. Please ensure openssl is installed"
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exit 1
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fi
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}
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# Shut down anyway if there's an error.
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set +e
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API_PORT=${API_PORT:-8080}
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API_HOST=${API_HOST:-127.0.0.1}
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KUBELET_HOST=${KUBELET_HOST:-"127.0.0.1"}
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# By default only allow CORS for requests on localhost
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API_CORS_ALLOWED_ORIGINS=${API_CORS_ALLOWED_ORIGINS:-"/127.0.0.1(:[0-9]+)?$,/localhost(:[0-9]+)?$"}
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KUBELET_PORT=${KUBELET_PORT:-10250}
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LOG_LEVEL=${LOG_LEVEL:-3}
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CONTAINER_RUNTIME=${CONTAINER_RUNTIME:-"docker"}
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RKT_PATH=${RKT_PATH:-""}
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RKT_STAGE1_IMAGE=${RKT_STAGE1_IMAGE:-""}
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CHAOS_CHANCE=${CHAOS_CHANCE:-0.0}
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CPU_CFS_QUOTA=${CPU_CFS_QUOTA:-false}
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ENABLE_HOSTPATH_PROVISIONER=${ENABLE_HOSTPATH_PROVISIONER:-"false"}
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CLAIM_BINDER_SYNC_PERIOD=${CLAIM_BINDER_SYNC_PERIOD:-"10m"} # current k8s default
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function test_apiserver_off {
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# For the common local scenario, fail fast if server is already running.
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# this can happen if you run local-up-cluster.sh twice and kill etcd in between.
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curl $API_HOST:$API_PORT
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if [ ! $? -eq 0 ]; then
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echo "API SERVER port is free, proceeding..."
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else
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echo "ERROR starting API SERVER, exiting. Some host on $API_HOST is serving already on $API_PORT"
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exit 1
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fi
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}
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function detect_binary {
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# Detect the OS name/arch so that we can find our binary
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case "$(uname -s)" in
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Darwin)
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host_os=darwin
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;;
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Linux)
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host_os=linux
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;;
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*)
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echo "Unsupported host OS. Must be Linux or Mac OS X." >&2
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exit 1
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;;
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esac
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case "$(uname -m)" in
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x86_64*)
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host_arch=amd64
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;;
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i?86_64*)
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host_arch=amd64
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;;
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amd64*)
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host_arch=amd64
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;;
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aarch64*)
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host_arch=arm64
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;;
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arm64*)
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host_arch=arm64
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;;
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arm*)
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host_arch=arm
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;;
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i?86*)
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host_arch=x86
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;;
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s390x*)
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host_arch=s390x
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;;
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ppc64le*)
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host_arch=ppc64le
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;;
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*)
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echo "Unsupported host arch. Must be x86_64, 386, arm, arm64, s390x or ppc64le." >&2
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exit 1
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;;
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esac
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GO_OUT="${KUBE_ROOT}/_output/local/bin/${host_os}/${host_arch}"
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}
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cleanup_dockerized_kubelet()
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{
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if [[ -e $KUBELET_CIDFILE ]]; then
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docker kill $(<$KUBELET_CIDFILE) > /dev/null
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rm -f $KUBELET_CIDFILE
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fi
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}
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cleanup()
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{
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echo "Cleaning up..."
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# delete running images
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# if [[ "${ENABLE_CLUSTER_DNS}" = true ]]; then
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# Still need to figure why this commands throw an error: Error from server: client: etcd cluster is unavailable or misconfigured
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# ${KUBECTL} --namespace=kube-system delete service kube-dns
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# And this one hang forever:
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# ${KUBECTL} --namespace=kube-system delete rc kube-dns-v10
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# fi
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# Check if the API server is still running
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[[ -n "${APISERVER_PID-}" ]] && APISERVER_PIDS=$(pgrep -P ${APISERVER_PID} ; ps -o pid= -p ${APISERVER_PID})
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[[ -n "${APISERVER_PIDS-}" ]] && sudo kill ${APISERVER_PIDS}
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# Check if the controller-manager is still running
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[[ -n "${CTLRMGR_PID-}" ]] && CTLRMGR_PIDS=$(pgrep -P ${CTLRMGR_PID} ; ps -o pid= -p ${CTLRMGR_PID})
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[[ -n "${CTLRMGR_PIDS-}" ]] && sudo kill ${CTLRMGR_PIDS}
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if [[ -n "$DOCKERIZE_KUBELET" ]]; then
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cleanup_dockerized_kubelet
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else
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# Check if the kubelet is still running
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[[ -n "${KUBELET_PID-}" ]] && KUBELET_PIDS=$(pgrep -P ${KUBELET_PID} ; ps -o pid= -p ${KUBELET_PID})
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[[ -n "${KUBELET_PIDS-}" ]] && sudo kill ${KUBELET_PIDS}
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fi
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# Check if the proxy is still running
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[[ -n "${PROXY_PID-}" ]] && PROXY_PIDS=$(pgrep -P ${PROXY_PID} ; ps -o pid= -p ${PROXY_PID})
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[[ -n "${PROXY_PIDS-}" ]] && sudo kill ${PROXY_PIDS}
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# Check if the scheduler is still running
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[[ -n "${SCHEDULER_PID-}" ]] && SCHEDULER_PIDS=$(pgrep -P ${SCHEDULER_PID} ; ps -o pid= -p ${SCHEDULER_PID})
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[[ -n "${SCHEDULER_PIDS-}" ]] && sudo kill ${SCHEDULER_PIDS}
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# Check if the etcd is still running
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[[ -n "${ETCD_PID-}" ]] && kube::etcd::stop
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[[ -n "${ETCD_DIR-}" ]] && kube::etcd::clean_etcd_dir
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exit 0
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}
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function startETCD {
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echo "Starting etcd"
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kube::etcd::start
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}
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function set_service_accounts {
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SERVICE_ACCOUNT_LOOKUP=${SERVICE_ACCOUNT_LOOKUP:-false}
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SERVICE_ACCOUNT_KEY=${SERVICE_ACCOUNT_KEY:-"/tmp/kube-serviceaccount.key"}
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# Generate ServiceAccount key if needed
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if [[ ! -f "${SERVICE_ACCOUNT_KEY}" ]]; then
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mkdir -p "$(dirname ${SERVICE_ACCOUNT_KEY})"
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openssl genrsa -out "${SERVICE_ACCOUNT_KEY}" 2048 2>/dev/null
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fi
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}
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function start_apiserver {
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# Admission Controllers to invoke prior to persisting objects in cluster
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if [[ -z "${ALLOW_SECURITY_CONTEXT}" ]]; then
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ADMISSION_CONTROL=NamespaceLifecycle,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota
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else
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ADMISSION_CONTROL=NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota
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fi
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# This is the default dir and filename where the apiserver will generate a self-signed cert
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# which should be able to be used as the CA to verify itself
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CERT_DIR=/var/run/kubernetes
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ROOT_CA_FILE=$CERT_DIR/apiserver.crt
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priv_arg=""
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if [[ -n "${ALLOW_PRIVILEGED}" ]]; then
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priv_arg="--allow-privileged "
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fi
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runtime_config=""
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if [[ -n "${RUNTIME_CONFIG}" ]]; then
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runtime_config="--runtime-config=${RUNTIME_CONFIG}"
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fi
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APISERVER_LOG=/tmp/kube-apiserver.log
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sudo -E "${GO_OUT}/hyperkube" apiserver ${priv_arg} ${runtime_config}\
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--v=${LOG_LEVEL} \
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--cert-dir="${CERT_DIR}" \
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--service-account-key-file="${SERVICE_ACCOUNT_KEY}" \
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--service-account-lookup="${SERVICE_ACCOUNT_LOOKUP}" \
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--admission-control="${ADMISSION_CONTROL}" \
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--insecure-bind-address="${API_HOST}" \
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--insecure-port="${API_PORT}" \
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--advertise-address="${API_HOST}" \
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--etcd-servers="http://${ETCD_HOST}:${ETCD_PORT}" \
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--service-cluster-ip-range="10.0.0.0/24" \
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--cloud-provider="${CLOUD_PROVIDER}" \
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--cors-allowed-origins="${API_CORS_ALLOWED_ORIGINS}" >"${APISERVER_LOG}" 2>&1 &
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APISERVER_PID=$!
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# Wait for kube-apiserver to come up before launching the rest of the components.
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echo "Waiting for apiserver to come up"
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kube::util::wait_for_url "http://${API_HOST}:${API_PORT}/api/v1/pods" "apiserver: " 1 ${WAIT_FOR_URL_API_SERVER} || exit 1
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}
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function start_controller_manager {
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node_cidr_args=""
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if [[ "${NET_PLUGIN}" == "kubenet" ]]; then
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node_cidr_args="--allocate-node-cidrs=true --cluster-cidr=10.1.0.0/16 "
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fi
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CTLRMGR_LOG=/tmp/kube-controller-manager.log
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sudo -E "${GO_OUT}/hyperkube" controller-manager \
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--v=${LOG_LEVEL} \
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--service-account-private-key-file="${SERVICE_ACCOUNT_KEY}" \
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--root-ca-file="${ROOT_CA_FILE}" \
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--enable-hostpath-provisioner="${ENABLE_HOSTPATH_PROVISIONER}" \
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${node_cidr_args} \
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--pvclaimbinder-sync-period="${CLAIM_BINDER_SYNC_PERIOD}" \
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--cloud-provider="${CLOUD_PROVIDER}" \
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--master="${API_HOST}:${API_PORT}" >"${CTLRMGR_LOG}" 2>&1 &
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CTLRMGR_PID=$!
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}
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function start_kubelet {
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KUBELET_LOG=/tmp/kubelet.log
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mkdir -p /var/lib/kubelet
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if [[ -z "${DOCKERIZE_KUBELET}" ]]; then
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# On selinux enabled systems, it might
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# require to relabel /var/lib/kubelet
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if which selinuxenabled &> /dev/null && \
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selinuxenabled && \
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which chcon > /dev/null ; then
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if [[ ! $(ls -Zd /var/lib/kubelet) =~ system_u:object_r:svirt_sandbox_file_t:s0 ]] ; then
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echo "Applying SELinux label to /var/lib/kubelet directory."
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if ! chcon -R system_u:object_r:svirt_sandbox_file_t:s0 /var/lib/kubelet; then
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echo "Failed to apply selinux label to /var/lib/kubelet."
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fi
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fi
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fi
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# Enable dns
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if [[ "${ENABLE_CLUSTER_DNS}" = true ]]; then
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dns_args="--cluster-dns=${DNS_SERVER_IP} --cluster-domain=${DNS_DOMAIN}"
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else
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# To start a private DNS server set ENABLE_CLUSTER_DNS and
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# DNS_SERVER_IP/DOMAIN. This will at least provide a working
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# DNS server for real world hostnames.
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dns_args="--cluster-dns=8.8.8.8"
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fi
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net_plugin_args=""
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if [[ -n "${NET_PLUGIN}" ]]; then
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net_plugin_args="--network-plugin=${NET_PLUGIN}"
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fi
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net_plugin_dir_args=""
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if [[ -n "${NET_PLUGIN_DIR}" ]]; then
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net_plugin_dir_args="--network-plugin-dir=${NET_PLUGIN_DIR}"
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fi
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kubenet_plugin_args=""
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if [[ "${NET_PLUGIN}" == "kubenet" ]]; then
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kubenet_plugin_args="--reconcile-cidr=true "
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fi
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sudo -E "${GO_OUT}/hyperkube" kubelet ${priv_arg}\
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--v=${LOG_LEVEL} \
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--chaos-chance="${CHAOS_CHANCE}" \
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--container-runtime="${CONTAINER_RUNTIME}" \
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--rkt-path="${RKT_PATH}" \
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--rkt-stage1-image="${RKT_STAGE1_IMAGE}" \
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--hostname-override="${HOSTNAME_OVERRIDE}" \
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--cloud-provider="${CLOUD_PROVIDER}" \
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--address="${KUBELET_HOST}" \
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--api-servers="${API_HOST}:${API_PORT}" \
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--cpu-cfs-quota=${CPU_CFS_QUOTA} \
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${dns_args} \
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${net_plugin_dir_args} \
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${net_plugin_args} \
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${kubenet_plugin_args} \
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--port="$KUBELET_PORT" >"${KUBELET_LOG}" 2>&1 &
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KUBELET_PID=$!
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else
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# Docker won't run a container with a cidfile (container id file)
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# unless that file does not already exist; clean up an existing
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# dockerized kubelet that might be running.
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cleanup_dockerized_kubelet
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docker run \
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--volume=/:/rootfs:ro \
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--volume=/var/run:/var/run:rw \
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--volume=/sys:/sys:ro \
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--volume=/var/lib/docker/:/var/lib/docker:ro \
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--volume=/var/lib/kubelet/:/var/lib/kubelet:rw,z \
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--net=host \
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--privileged=true \
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-i \
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--cidfile=$KUBELET_CIDFILE \
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gcr.io/google_containers/kubelet \
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/kubelet --v=3 --containerized ${priv_arg}--chaos-chance="${CHAOS_CHANCE}" --hostname-override="${HOSTNAME_OVERRIDE}" --cloud-provider="${CLOUD_PROVIDER}" --address="127.0.0.1" --api-servers="${API_HOST}:${API_PORT}" --port="$KUBELET_PORT" --resource-container="" &> $KUBELET_LOG &
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fi
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}
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function start_kubeproxy {
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PROXY_LOG=/tmp/kube-proxy.log
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sudo -E "${GO_OUT}/hyperkube" proxy \
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--v=${LOG_LEVEL} \
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--hostname-override="${HOSTNAME_OVERRIDE}" \
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--master="http://${API_HOST}:${API_PORT}" >"${PROXY_LOG}" 2>&1 &
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PROXY_PID=$!
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SCHEDULER_LOG=/tmp/kube-scheduler.log
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sudo -E "${GO_OUT}/hyperkube" scheduler \
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--v=${LOG_LEVEL} \
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--master="http://${API_HOST}:${API_PORT}" >"${SCHEDULER_LOG}" 2>&1 &
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SCHEDULER_PID=$!
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}
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function start_kubedns {
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if [[ "${ENABLE_CLUSTER_DNS}" = true ]]; then
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echo "Creating kube-system namespace"
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sed -e "s/{{ pillar\['dns_replicas'\] }}/${DNS_REPLICAS}/g;s/{{ pillar\['dns_domain'\] }}/${DNS_DOMAIN}/g;" "${KUBE_ROOT}/cluster/saltbase/salt/kube-dns/skydns-rc.yaml.in" >| skydns-rc.yaml
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sed -e "s/{{ pillar\['dns_server'\] }}/${DNS_SERVER_IP}/g" "${KUBE_ROOT}/cluster/saltbase/salt/kube-dns/skydns-svc.yaml.in" >| skydns-svc.yaml
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cat <<EOF >namespace.yaml
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apiVersion: v1
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kind: Namespace
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metadata:
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name: kube-system
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EOF
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${KUBECTL} config set-cluster local --server=http://${API_HOST}:${API_PORT} --insecure-skip-tls-verify=true
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${KUBECTL} config set-context local --cluster=local
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${KUBECTL} config use-context local
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${KUBECTL} create -f namespace.yaml
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# use kubectl to create skydns rc and service
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${KUBECTL} --namespace=kube-system create -f skydns-rc.yaml
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${KUBECTL} --namespace=kube-system create -f skydns-svc.yaml
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echo "Kube-dns rc and service successfully deployed."
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fi
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|
|
|
}
|
|
|
|
function print_success {
|
|
cat <<EOF
|
|
Local Kubernetes cluster is running. Press Ctrl-C to shut it down.
|
|
|
|
Logs:
|
|
${APISERVER_LOG}
|
|
${CTLRMGR_LOG}
|
|
${PROXY_LOG}
|
|
${SCHEDULER_LOG}
|
|
${KUBELET_LOG}
|
|
|
|
To start using your cluster, open up another terminal/tab and run:
|
|
|
|
cluster/kubectl.sh config set-cluster local --server=http://${API_HOST}:${API_PORT} --insecure-skip-tls-verify=true
|
|
cluster/kubectl.sh config set-context local --cluster=local
|
|
cluster/kubectl.sh config use-context local
|
|
cluster/kubectl.sh
|
|
EOF
|
|
}
|
|
|
|
test_docker
|
|
test_apiserver_off
|
|
test_openssl_installed
|
|
|
|
### IF the user didn't supply an output/ for the build... Then we detect.
|
|
if [ "$GO_OUT" == "" ]; then
|
|
detect_binary
|
|
fi
|
|
echo "Detected host and ready to start services. Doing some housekeeping first..."
|
|
echo "Using GO_OUT $GO_OUT"
|
|
KUBELET_CIDFILE=/tmp/kubelet.cid
|
|
if [[ "${ENABLE_DAEMON}" = false ]]; then
|
|
trap cleanup EXIT
|
|
fi
|
|
echo "Starting services now!"
|
|
startETCD
|
|
set_service_accounts
|
|
start_apiserver
|
|
start_controller_manager
|
|
start_kubelet
|
|
start_kubeproxy
|
|
start_kubedns
|
|
print_success
|
|
|
|
if [[ "${ENABLE_DAEMON}" = false ]]; then
|
|
while true; do sleep 1; done
|
|
fi
|