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kubernetes/hack/local-up-cluster.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.
KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
# This command builds and runs a local kubernetes cluster.
# You may need to run this as root to allow kubelet to open docker's socket,
# and to write the test CA in /var/run/kubernetes.
DOCKER_OPTS=${DOCKER_OPTS:-""}
DOCKER=(docker ${DOCKER_OPTS})
DOCKERIZE_KUBELET=${DOCKERIZE_KUBELET:-""}
ALLOW_PRIVILEGED=${ALLOW_PRIVILEGED:-""}
ALLOW_SECURITY_CONTEXT=${ALLOW_SECURITY_CONTEXT:-""}
PSP_ADMISSION=${PSP_ADMISSION:-""}
RUNTIME_CONFIG=${RUNTIME_CONFIG:-""}
KUBELET_AUTHORIZATION_WEBHOOK=${KUBELET_AUTHORIZATION_WEBHOOK:-""}
KUBELET_AUTHENTICATION_WEBHOOK=${KUBELET_AUTHENTICATION_WEBHOOK:-""}
POD_MANIFEST_PATH=${POD_MANIFEST_PATH:-"/var/run/kubernetes/static-pods"}
# Name of the network plugin, eg: "kubenet"
NET_PLUGIN=${NET_PLUGIN:-""}
# Place the binaries required by NET_PLUGIN in this directory, eg: "/home/kubernetes/bin".
NET_PLUGIN_DIR=${NET_PLUGIN_DIR:-""}
SERVICE_CLUSTER_IP_RANGE=${SERVICE_CLUSTER_IP_RANGE:-10.0.0.0/24}
FIRST_SERVICE_CLUSTER_IP=${FIRST_SERVICE_CLUSTER_IP:-10.0.0.1}
# if enabled, must set CGROUP_ROOT
CGROUPS_PER_QOS=${CGROUPS_PER_QOS:-false}
# this is not defaulted to preserve backward compatibility.
# if EXPERIMENTAL_CGROUPS_PER_QOS is enabled, recommend setting to /
CGROUP_ROOT=${CGROUP_ROOT:-""}
# name of the cgroup driver, i.e. cgroupfs or systemd
CGROUP_DRIVER=${CGROUP_DRIVER:-""}
# enables testing eviction scenarios locally.
EVICTION_HARD=${EVICTION_HARD:-"memory.available<100Mi"}
EVICTION_SOFT=${EVICTION_SOFT:-""}
EVICTION_PRESSURE_TRANSITION_PERIOD=${EVICTION_PRESSURE_TRANSITION_PERIOD:-"1m"}
# We disable cluster DNS by default because this script uses docker0 (or whatever
# container bridge docker is currently using) and we don't know the IP of the
# DNS pod to pass in as --cluster-dns. To set this up by hand, set this flag
# and change DNS_SERVER_IP to the appropriate IP.
ENABLE_CLUSTER_DNS=${KUBE_ENABLE_CLUSTER_DNS:-false}
DNS_SERVER_IP=${KUBE_DNS_SERVER_IP:-10.0.0.10}
DNS_DOMAIN=${KUBE_DNS_NAME:-"cluster.local"}
KUBECTL=${KUBECTL:-cluster/kubectl.sh}
WAIT_FOR_URL_API_SERVER=${WAIT_FOR_URL_API_SERVER:-10}
ENABLE_DAEMON=${ENABLE_DAEMON:-false}
HOSTNAME_OVERRIDE=${HOSTNAME_OVERRIDE:-"127.0.0.1"}
CLOUD_PROVIDER=${CLOUD_PROVIDER:-""}
CLOUD_CONFIG=${CLOUD_CONFIG:-""}
FEATURE_GATES=${FEATURE_GATES:-"AllAlpha=true"}
# RBAC Mode options
ALLOW_ANY_TOKEN=${ALLOW_ANY_TOKEN:-false}
ENABLE_RBAC=${ENABLE_RBAC:-false}
KUBECONFIG_TOKEN=${KUBECONFIG_TOKEN:-""}
AUTH_ARGS=${AUTH_ARGS:-""}
# start the cache mutation detector by default so that cache mutators will be found
KUBE_CACHE_MUTATION_DETECTOR="${KUBE_CACHE_MUTATION_DETECTOR:-true}"
export KUBE_CACHE_MUTATION_DETECTOR
# START_MODE can be 'all', 'kubeletonly', or 'nokubelet'
START_MODE=${START_MODE:-"all"}
# sanity check for OpenStack provider
if [ "${CLOUD_PROVIDER}" == "openstack" ]; then
if [ "${CLOUD_CONFIG}" == "" ]; then
echo "Missing CLOUD_CONFIG env for OpenStack provider!"
exit 1
fi
if [ ! -f "${CLOUD_CONFIG}" ]; then
echo "Cloud config ${CLOUD_CONFIG} doesn't exist"
exit 1
fi
fi
if [ "$(id -u)" != "0" ]; then
echo "WARNING : This script MAY be run as root for docker socket / iptables functionality; if failures occur, retry as root." 2>&1
fi
# Stop right away if the build fails
set -e
source "${KUBE_ROOT}/hack/lib/init.sh"
function usage {
echo "This script starts a local kube cluster. "
echo "Example 0: hack/local-up-cluster.sh -h (this 'help' usage description)"
echo "Example 1: hack/local-up-cluster.sh -o _output/dockerized/bin/linux/amd64/ (run from docker output)"
echo "Example 2: hack/local-up-cluster.sh -O (auto-guess the bin path for your platform)"
echo "Example 3: hack/local-up-cluster.sh (build a local copy of the source)"
}
# This function guesses where the existing cached binary build is for the `-O`
# flag
function guess_built_binary_path {
local hyperkube_path=$(kube::util::find-binary "hyperkube")
if [[ -z "${hyperkube_path}" ]]; then
return
fi
echo -n "$(dirname "${hyperkube_path}")"
}
### Allow user to supply the source directory.
GO_OUT=${GO_OUT:-}
while getopts "ho:O" OPTION
do
case $OPTION in
o)
echo "skipping build"
GO_OUT="$OPTARG"
echo "using source $GO_OUT"
;;
O)
GO_OUT=$(guess_built_binary_path)
if [ $GO_OUT == "" ]; then
echo "Could not guess the correct output directory to use."
exit 1
fi
;;
h)
usage
exit
;;
?)
usage
exit
;;
esac
done
if [ "x$GO_OUT" == "x" ]; then
make -C "${KUBE_ROOT}" WHAT="cmd/kubectl cmd/hyperkube vendor/k8s.io/kube-aggregator"
else
echo "skipped the build."
fi
function test_rkt {
if [[ -n "${RKT_PATH}" ]]; then
${RKT_PATH} list 2> /dev/null 1> /dev/null
if [ "$?" != "0" ]; then
echo "Failed to successfully run 'rkt list', please verify that ${RKT_PATH} is the path of rkt binary."
exit 1
fi
else
rkt list 2> /dev/null 1> /dev/null
if [ "$?" != "0" ]; then
echo "Failed to successfully run 'rkt list', please verify that rkt is in \$PATH."
exit 1
fi
fi
}
# Shut down anyway if there's an error.
set +e
API_PORT=${API_PORT:-8080}
API_SECURE_PORT=${API_SECURE_PORT:-6443}
API_HOST=${API_HOST:-localhost}
API_HOST_IP=${API_HOST_IP:-"127.0.0.1"}
API_BIND_ADDR=${API_BIND_ADDR:-"0.0.0.0"}
KUBELET_HOST=${KUBELET_HOST:-"127.0.0.1"}
# By default only allow CORS for requests on localhost
API_CORS_ALLOWED_ORIGINS=${API_CORS_ALLOWED_ORIGINS:-/127.0.0.1(:[0-9]+)?$,/localhost(:[0-9]+)?$}
KUBELET_PORT=${KUBELET_PORT:-10250}
LOG_LEVEL=${LOG_LEVEL:-3}
CONTAINER_RUNTIME=${CONTAINER_RUNTIME:-"docker"}
CONTAINER_RUNTIME_ENDPOINT=${CONTAINER_RUNTIME_ENDPOINT:-""}
IMAGE_SERVICE_ENDPOINT=${IMAGE_SERVICE_ENDPOINT:-""}
RKT_PATH=${RKT_PATH:-""}
RKT_STAGE1_IMAGE=${RKT_STAGE1_IMAGE:-""}
CHAOS_CHANCE=${CHAOS_CHANCE:-0.0}
CPU_CFS_QUOTA=${CPU_CFS_QUOTA:-true}
ENABLE_HOSTPATH_PROVISIONER=${ENABLE_HOSTPATH_PROVISIONER:-"false"}
CLAIM_BINDER_SYNC_PERIOD=${CLAIM_BINDER_SYNC_PERIOD:-"15s"} # current k8s default
ENABLE_CONTROLLER_ATTACH_DETACH=${ENABLE_CONTROLLER_ATTACH_DETACH:-"true"} # current default
# This is the default dir and filename where the apiserver will generate a self-signed cert
# which should be able to be used as the CA to verify itself
CERT_DIR=${CERT_DIR:-"/var/run/kubernetes"}
ROOT_CA_FILE=${CERT_DIR}/server-ca.crt
# name of the cgroup driver, i.e. cgroupfs or systemd
if [[ ${CONTAINER_RUNTIME} == "docker" ]]; then
# default cgroup driver to match what is reported by docker to simplify local development
if [[ -z ${CGROUP_DRIVER} ]]; then
# match driver with docker runtime reported value (they must match)
CGROUP_DRIVER=$(docker info | grep "Cgroup Driver:" | cut -f3- -d' ')
echo "Kubelet cgroup driver defaulted to use: ${CGROUP_DRIVER}"
fi
fi
# Ensure CERT_DIR is created for auto-generated crt/key and kubeconfig
mkdir -p "${CERT_DIR}" &>/dev/null || sudo mkdir -p "${CERT_DIR}"
CONTROLPLANE_SUDO=$(test -w "${CERT_DIR}" || echo "sudo -E")
function test_apiserver_off {
# For the common local scenario, fail fast if server is already running.
# this can happen if you run local-up-cluster.sh twice and kill etcd in between.
if [[ "${API_PORT}" -gt "0" ]]; then
curl --silent -g $API_HOST:$API_PORT
if [ ! $? -eq 0 ]; then
echo "API SERVER insecure port is free, proceeding..."
else
echo "ERROR starting API SERVER, exiting. Some process on $API_HOST is serving already on $API_PORT"
exit 1
fi
fi
curl --silent -k -g $API_HOST:$API_SECURE_PORT
if [ ! $? -eq 0 ]; then
echo "API SERVER secure port is free, proceeding..."
else
echo "ERROR starting API SERVER, exiting. Some process on $API_HOST is serving already on $API_SECURE_PORT"
exit 1
fi
}
function detect_binary {
# Detect the OS name/arch so that we can find our binary
case "$(uname -s)" in
Darwin)
host_os=darwin
;;
Linux)
host_os=linux
;;
*)
echo "Unsupported host OS. Must be Linux or Mac OS X." >&2
exit 1
;;
esac
case "$(uname -m)" in
x86_64*)
host_arch=amd64
;;
i?86_64*)
host_arch=amd64
;;
amd64*)
host_arch=amd64
;;
aarch64*)
host_arch=arm64
;;
arm64*)
host_arch=arm64
;;
arm*)
host_arch=arm
;;
i?86*)
host_arch=x86
;;
s390x*)
host_arch=s390x
;;
ppc64le*)
host_arch=ppc64le
;;
*)
echo "Unsupported host arch. Must be x86_64, 386, arm, arm64, s390x or ppc64le." >&2
exit 1
;;
esac
GO_OUT="${KUBE_ROOT}/_output/local/bin/${host_os}/${host_arch}"
}
cleanup_dockerized_kubelet()
{
if [[ -e $KUBELET_CIDFILE ]]; then
docker kill $(<$KUBELET_CIDFILE) > /dev/null
rm -f $KUBELET_CIDFILE
fi
}
cleanup()
{
echo "Cleaning up..."
# delete running images
# if [[ "${ENABLE_CLUSTER_DNS}" = true ]]; then
# Still need to figure why this commands throw an error: Error from server: client: etcd cluster is unavailable or misconfigured
# ${KUBECTL} --namespace=kube-system delete service kube-dns
# And this one hang forever:
# ${KUBECTL} --namespace=kube-system delete rc kube-dns-v10
# fi
# Check if the API server is still running
[[ -n "${APISERVER_PID-}" ]] && APISERVER_PIDS=$(pgrep -P ${APISERVER_PID} ; ps -o pid= -p ${APISERVER_PID})
[[ -n "${APISERVER_PIDS-}" ]] && sudo kill ${APISERVER_PIDS}
# Check if the controller-manager is still running
[[ -n "${CTLRMGR_PID-}" ]] && CTLRMGR_PIDS=$(pgrep -P ${CTLRMGR_PID} ; ps -o pid= -p ${CTLRMGR_PID})
[[ -n "${CTLRMGR_PIDS-}" ]] && sudo kill ${CTLRMGR_PIDS}
if [[ -n "$DOCKERIZE_KUBELET" ]]; then
cleanup_dockerized_kubelet
else
# Check if the kubelet is still running
[[ -n "${KUBELET_PID-}" ]] && KUBELET_PIDS=$(pgrep -P ${KUBELET_PID} ; ps -o pid= -p ${KUBELET_PID})
[[ -n "${KUBELET_PIDS-}" ]] && sudo kill ${KUBELET_PIDS}
fi
# Check if the proxy is still running
[[ -n "${PROXY_PID-}" ]] && PROXY_PIDS=$(pgrep -P ${PROXY_PID} ; ps -o pid= -p ${PROXY_PID})
[[ -n "${PROXY_PIDS-}" ]] && sudo kill ${PROXY_PIDS}
# Check if the scheduler is still running
[[ -n "${SCHEDULER_PID-}" ]] && SCHEDULER_PIDS=$(pgrep -P ${SCHEDULER_PID} ; ps -o pid= -p ${SCHEDULER_PID})
[[ -n "${SCHEDULER_PIDS-}" ]] && sudo kill ${SCHEDULER_PIDS}
# Check if the etcd is still running
[[ -n "${ETCD_PID-}" ]] && kube::etcd::stop
[[ -n "${ETCD_DIR-}" ]] && kube::etcd::clean_etcd_dir
exit 0
}
function warning {
message=$1
echo $(tput bold)$(tput setaf 1)
echo "WARNING: ${message}"
echo $(tput sgr0)
}
function start_etcd {
echo "Starting etcd"
kube::etcd::start
}
function set_service_accounts {
SERVICE_ACCOUNT_LOOKUP=${SERVICE_ACCOUNT_LOOKUP:-false}
SERVICE_ACCOUNT_KEY=${SERVICE_ACCOUNT_KEY:-/tmp/kube-serviceaccount.key}
# Generate ServiceAccount key if needed
if [[ ! -f "${SERVICE_ACCOUNT_KEY}" ]]; then
mkdir -p "$(dirname ${SERVICE_ACCOUNT_KEY})"
openssl genrsa -out "${SERVICE_ACCOUNT_KEY}" 2048 2>/dev/null
fi
}
function start_apiserver {
security_admission=""
if [[ -z "${ALLOW_SECURITY_CONTEXT}" ]]; then
security_admission=",SecurityContextDeny"
fi
if [[ -n "${PSP_ADMISSION}" ]]; then
security_admission=",PodSecurityPolicy"
fi
# Admission Controllers to invoke prior to persisting objects in cluster
ADMISSION_CONTROL=NamespaceLifecycle,LimitRanger,ServiceAccount${security_admission},ResourceQuota,DefaultStorageClass
# This is the default dir and filename where the apiserver will generate a self-signed cert
# which should be able to be used as the CA to verify itself
anytoken_arg=""
if [[ "${ALLOW_ANY_TOKEN}" = true ]]; then
anytoken_arg="--insecure-allow-any-token "
KUBECONFIG_TOKEN="${KUBECONFIG_TOKEN:-system:admin/system:masters}"
fi
authorizer_arg=""
if [[ "${ENABLE_RBAC}" = true ]]; then
authorizer_arg="--authorization-mode=RBAC "
fi
priv_arg=""
if [[ -n "${ALLOW_PRIVILEGED}" ]]; then
priv_arg="--allow-privileged "
fi
runtime_config=""
if [[ -n "${RUNTIME_CONFIG}" ]]; then
runtime_config="--runtime-config=${RUNTIME_CONFIG}"
fi
# Let the API server pick a default address when API_HOST_IP
# is set to 127.0.0.1
advertise_address=""
if [[ "${API_HOST_IP}" != "127.0.0.1" ]]; then
advertise_address="--advertise_address=${API_HOST_IP}"
fi
# Create CA signers
kube::util::create_signing_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" server '"server auth"'
kube::util::create_signing_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" client '"client auth"'
# Create auth proxy client ca
kube::util::create_signing_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" request-header '"client auth"'
# serving cert for kube-apiserver
kube::util::create_serving_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" "server-ca" kube-apiserver kubernetes.default kubernetes.default.svc "localhost" ${API_HOST_IP} ${API_HOST} ${FIRST_SERVICE_CLUSTER_IP}
# Create client certs signed with client-ca, given id, given CN and a number of groups
kube::util::create_client_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" 'client-ca' kubelet system:node:${HOSTNAME_OVERRIDE} system:nodes
kube::util::create_client_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" 'client-ca' kube-proxy system:kube-proxy system:nodes
kube::util::create_client_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" 'client-ca' controller system:kube-controller-manager
kube::util::create_client_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" 'client-ca' scheduler system:kube-scheduler
kube::util::create_client_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" 'client-ca' admin system:admin system:masters
# Create matching certificates for kube-aggregator
kube::util::create_serving_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" "server-ca" kube-aggregator api.kube-public.svc "localhost" ${API_HOST_IP}
kube::util::create_client_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" request-header-ca auth-proxy system:auth-proxy
# TODO remove masters and add rolebinding
kube::util::create_client_certkey "${CONTROLPLANE_SUDO}" "${CERT_DIR}" 'client-ca' kube-aggregator system:kube-aggregator system:masters
kube::util::write_client_kubeconfig "${CONTROLPLANE_SUDO}" "${CERT_DIR}" "${ROOT_CA_FILE}" "${API_HOST}" "${API_SECURE_PORT}" kube-aggregator
APISERVER_LOG=/tmp/kube-apiserver.log
${CONTROLPLANE_SUDO} "${GO_OUT}/hyperkube" apiserver ${anytoken_arg} ${authorizer_arg} ${priv_arg} ${runtime_config}\
${advertise_address} \
--v=${LOG_LEVEL} \
--cert-dir="${CERT_DIR}" \
--client-ca-file="${CERT_DIR}/client-ca.crt" \
--service-account-key-file="${SERVICE_ACCOUNT_KEY}" \
--service-account-lookup="${SERVICE_ACCOUNT_LOOKUP}" \
--admission-control="${ADMISSION_CONTROL}" \
--bind-address="${API_BIND_ADDR}" \
--secure-port="${API_SECURE_PORT}" \
--tls-cert-file="${CERT_DIR}/serving-kube-apiserver.crt" \
--tls-private-key-file="${CERT_DIR}/serving-kube-apiserver.key" \
--tls-ca-file="${CERT_DIR}/server-ca.crt" \
--insecure-bind-address="${API_HOST_IP}" \
--insecure-port="${API_PORT}" \
--etcd-servers="http://${ETCD_HOST}:${ETCD_PORT}" \
--service-cluster-ip-range="${SERVICE_CLUSTER_IP_RANGE}" \
--feature-gates="${FEATURE_GATES}" \
--cloud-provider="${CLOUD_PROVIDER}" \
--cloud-config="${CLOUD_CONFIG}" \
--requestheader-username-headers=X-Remote-User \
--requestheader-group-headers=X-Remote-Group \
--requestheader-extra-headers-prefix=X-Remote-Extra- \
--requestheader-client-ca-file="${CERT_DIR}/request-header-ca.crt" \
--requestheader-allowed-names=system:auth-proxy \
--cors-allowed-origins="${API_CORS_ALLOWED_ORIGINS}" >"${APISERVER_LOG}" 2>&1 &
APISERVER_PID=$!
# Wait for kube-apiserver to come up before launching the rest of the components.
echo "Waiting for apiserver to come up"
# this uses the API port because if you don't have any authenticator, you can't seem to use the secure port at all.
# this matches what happened with the combination in 1.4.
# TODO change this conditionally based on whether API_PORT is on or off
kube::util::wait_for_url "http://${API_HOST_IP}:${API_PORT}/version" "apiserver: " 1 ${WAIT_FOR_URL_API_SERVER} \
|| { echo "check apiserver logs: ${APISERVER_LOG}" ; exit 1 ; }
# Create kubeconfigs for all components, using client certs
kube::util::write_client_kubeconfig "${CONTROLPLANE_SUDO}" "${CERT_DIR}" "${ROOT_CA_FILE}" "${API_HOST}" "${API_SECURE_PORT}" admin
${CONTROLPLANE_SUDO} chown "${USER}" "${CERT_DIR}/client-admin.key" # make readable for kubectl
kube::util::write_client_kubeconfig "${CONTROLPLANE_SUDO}" "${CERT_DIR}" "${ROOT_CA_FILE}" "${API_HOST}" "${API_SECURE_PORT}" kubelet
kube::util::write_client_kubeconfig "${CONTROLPLANE_SUDO}" "${CERT_DIR}" "${ROOT_CA_FILE}" "${API_HOST}" "${API_SECURE_PORT}" kube-proxy
kube::util::write_client_kubeconfig "${CONTROLPLANE_SUDO}" "${CERT_DIR}" "${ROOT_CA_FILE}" "${API_HOST}" "${API_SECURE_PORT}" controller
kube::util::write_client_kubeconfig "${CONTROLPLANE_SUDO}" "${CERT_DIR}" "${ROOT_CA_FILE}" "${API_HOST}" "${API_SECURE_PORT}" scheduler
if [[ -z "${AUTH_ARGS}" ]]; then
if [[ "${ALLOW_ANY_TOKEN}" = true ]]; then
# use token authentication
if [[ -n "${KUBECONFIG_TOKEN}" ]]; then
AUTH_ARGS="--token=${KUBECONFIG_TOKEN}"
else
AUTH_ARGS="--token=system:admin/system:masters"
fi
else
# default to the admin client cert/key
AUTH_ARGS="--client-key=${CERT_DIR}/client-admin.key --client-certificate=${CERT_DIR}/client-admin.crt"
fi
fi
# create the kube-public namespace for the aggregator
${KUBECTL} --kubeconfig="${CERT_DIR}/admin.kubeconfig" create namespace kube-public
${CONTROLPLANE_SUDO} cp "${CERT_DIR}/admin.kubeconfig" "${CERT_DIR}/admin-kube-aggregator.kubeconfig"
${CONTROLPLANE_SUDO} chown $(whoami) "${CERT_DIR}/admin-kube-aggregator.kubeconfig"
${KUBECTL} config set-cluster local-up-cluster --kubeconfig="${CERT_DIR}/admin-kube-aggregator.kubeconfig" --server="https://${API_HOST_IP}:31090"
echo "use 'kubectl --kubeconfig=${CERT_DIR}/admin-kube-aggregator.kubeconfig' to use the aggregated API server"
}
function start_controller_manager {
node_cidr_args=""
if [[ "${NET_PLUGIN}" == "kubenet" ]]; then
node_cidr_args="--allocate-node-cidrs=true --cluster-cidr=10.1.0.0/16 "
fi
CTLRMGR_LOG=/tmp/kube-controller-manager.log
${CONTROLPLANE_SUDO} "${GO_OUT}/hyperkube" controller-manager \
--v=${LOG_LEVEL} \
--service-account-private-key-file="${SERVICE_ACCOUNT_KEY}" \
--root-ca-file="${ROOT_CA_FILE}" \
--enable-hostpath-provisioner="${ENABLE_HOSTPATH_PROVISIONER}" \
${node_cidr_args} \
--pvclaimbinder-sync-period="${CLAIM_BINDER_SYNC_PERIOD}" \
--feature-gates="${FEATURE_GATES}" \
--cloud-provider="${CLOUD_PROVIDER}" \
--cloud-config="${CLOUD_CONFIG}" \
--kubeconfig "$CERT_DIR"/controller.kubeconfig \
--use-service-account-credentials \
--master="https://${API_HOST}:${API_SECURE_PORT}" >"${CTLRMGR_LOG}" 2>&1 &
CTLRMGR_PID=$!
}
function start_kubelet {
KUBELET_LOG=/tmp/kubelet.log
mkdir -p ${POD_MANIFEST_PATH} || true
priv_arg=""
if [[ -n "${ALLOW_PRIVILEGED}" ]]; then
priv_arg="--allow-privileged "
fi
mkdir -p /var/lib/kubelet
if [[ -z "${DOCKERIZE_KUBELET}" ]]; then
# Enable dns
if [[ "${ENABLE_CLUSTER_DNS}" = true ]]; then
dns_args="--cluster-dns=${DNS_SERVER_IP} --cluster-domain=${DNS_DOMAIN}"
else
# To start a private DNS server set ENABLE_CLUSTER_DNS and
# DNS_SERVER_IP/DOMAIN. This will at least provide a working
# DNS server for real world hostnames.
dns_args="--cluster-dns=8.8.8.8"
fi
net_plugin_args=""
if [[ -n "${NET_PLUGIN}" ]]; then
net_plugin_args="--network-plugin=${NET_PLUGIN}"
fi
auth_args=""
if [[ -n "${KUBELET_AUTHORIZATION_WEBHOOK:-}" ]]; then
auth_args="${auth_args} --authorization-mode=Webhook"
fi
if [[ -n "${KUBELET_AUTHENTICATION_WEBHOOK:-}" ]]; then
auth_args="${auth_args} --authentication-token-webhook"
fi
if [[ -n "${CLIENT_CA_FILE:-}" ]]; then
auth_args="${auth_args} --client-ca-file=${CLIENT_CA_FILE}"
fi
net_plugin_dir_args=""
if [[ -n "${NET_PLUGIN_DIR}" ]]; then
net_plugin_dir_args="--network-plugin-dir=${NET_PLUGIN_DIR}"
fi
container_runtime_endpoint_args=""
if [[ -n "${CONTAINER_RUNTIME_ENDPOINT}" ]]; then
container_runtime_endpoint_args="--container-runtime-endpoint=${CONTAINER_RUNTIME_ENDPOINT}"
fi
image_service_endpoint_args=""
if [[ -n "${IMAGE_SERVICE_ENDPOINT}" ]]; then
image_service_endpoint_args="--image-service-endpoint=${IMAGE_SERVICE_ENDPOINT}"
fi
sudo -E "${GO_OUT}/hyperkube" kubelet ${priv_arg}\
--v=${LOG_LEVEL} \
--chaos-chance="${CHAOS_CHANCE}" \
--container-runtime="${CONTAINER_RUNTIME}" \
--rkt-path="${RKT_PATH}" \
--rkt-stage1-image="${RKT_STAGE1_IMAGE}" \
--hostname-override="${HOSTNAME_OVERRIDE}" \
--cloud-provider="${CLOUD_PROVIDER}" \
--cloud-config="${CLOUD_CONFIG}" \
--address="${KUBELET_HOST}" \
--require-kubeconfig \
--kubeconfig "$CERT_DIR"/kubelet.kubeconfig \
--feature-gates="${FEATURE_GATES}" \
--cpu-cfs-quota=${CPU_CFS_QUOTA} \
--enable-controller-attach-detach="${ENABLE_CONTROLLER_ATTACH_DETACH}" \
--cgroups-per-qos=${CGROUPS_PER_QOS} \
--cgroup-driver=${CGROUP_DRIVER} \
--cgroup-root=${CGROUP_ROOT} \
--keep-terminated-pod-volumes=true \
--eviction-hard=${EVICTION_HARD} \
--eviction-soft=${EVICTION_SOFT} \
--eviction-pressure-transition-period=${EVICTION_PRESSURE_TRANSITION_PERIOD} \
--pod-manifest-path="${POD_MANIFEST_PATH}" \
${auth_args} \
${dns_args} \
${net_plugin_dir_args} \
${net_plugin_args} \
${container_runtime_endpoint_args} \
${image_service_endpoint_args} \
--port="$KUBELET_PORT" >"${KUBELET_LOG}" 2>&1 &
KUBELET_PID=$!
# Quick check that kubelet is running.
if ps -p $KUBELET_PID > /dev/null ; then
echo "kubelet ( $KUBELET_PID ) is running."
else
cat ${KUBELET_LOG} ; exit 1
fi
else
# Docker won't run a container with a cidfile (container id file)
# unless that file does not already exist; clean up an existing
# dockerized kubelet that might be running.
cleanup_dockerized_kubelet
cred_bind=""
# path to cloud credentials.
cloud_cred=""
if [ "${CLOUD_PROVIDER}" == "aws" ]; then
cloud_cred="${HOME}/.aws/credentials"
fi
if [ "${CLOUD_PROVIDER}" == "gce" ]; then
cloud_cred="${HOME}/.config/gcloud"
fi
if [ "${CLOUD_PROVIDER}" == "openstack" ]; then
cloud_cred="${CLOUD_CONFIG}"
fi
if [[ -n "${cloud_cred}" ]]; then
cred_bind="--volume=${cloud_cred}:${cloud_cred}:ro"
fi
docker run \
--volume=/:/rootfs:ro \
--volume=/var/run:/var/run:rw \
--volume=/sys:/sys:ro \
--volume=/var/lib/docker/:/var/lib/docker:ro \
--volume=/var/lib/kubelet/:/var/lib/kubelet:rw \
--volume=/dev:/dev \
${cred_bind} \
--net=host \
--privileged=true \
-i \
--cidfile=$KUBELET_CIDFILE \
gcr.io/google_containers/kubelet \
/kubelet --v=${LOG_LEVEL} --containerized ${priv_arg}--chaos-chance="${CHAOS_CHANCE}" --pod-manifest-path="${POD_MANIFEST_PATH}" --hostname-override="${HOSTNAME_OVERRIDE}" --cloud-provider="${CLOUD_PROVIDER}" --cloud-config="${CLOUD_CONFIG}" \ --address="127.0.0.1" --require-kubeconfig --kubeconfig "$CERT_DIR"/kubelet.kubeconfig --api-servers="https://${API_HOST}:${API_SECURE_PORT}" --port="$KUBELET_PORT" --enable-controller-attach-detach="${ENABLE_CONTROLLER_ATTACH_DETACH}" &> $KUBELET_LOG &
fi
}
function start_kubeproxy {
PROXY_LOG=/tmp/kube-proxy.log
sudo "${GO_OUT}/hyperkube" proxy \
--v=${LOG_LEVEL} \
--hostname-override="${HOSTNAME_OVERRIDE}" \
--feature-gates="${FEATURE_GATES}" \
--kubeconfig "$CERT_DIR"/kube-proxy.kubeconfig \
--master="https://${API_HOST}:${API_SECURE_PORT}" >"${PROXY_LOG}" 2>&1 &
PROXY_PID=$!
SCHEDULER_LOG=/tmp/kube-scheduler.log
${CONTROLPLANE_SUDO} "${GO_OUT}/hyperkube" scheduler \
--v=${LOG_LEVEL} \
--kubeconfig "$CERT_DIR"/scheduler.kubeconfig \
--master="https://${API_HOST}:${API_SECURE_PORT}" >"${SCHEDULER_LOG}" 2>&1 &
SCHEDULER_PID=$!
}
function start_kubedns {
if [[ "${ENABLE_CLUSTER_DNS}" = true ]]; then
echo "Creating kube-system namespace"
sed -e "s/{{ pillar\['dns_domain'\] }}/${DNS_DOMAIN}/g" "${KUBE_ROOT}/cluster/addons/dns/kubedns-controller.yaml.in" >| kubedns-deployment.yaml
if [[ "${FEDERATION:-}" == "true" ]]; then
FEDERATIONS_DOMAIN_MAP="${FEDERATIONS_DOMAIN_MAP:-}"
if [[ -z "${FEDERATIONS_DOMAIN_MAP}" && -n "${FEDERATION_NAME:-}" && -n "${DNS_ZONE_NAME:-}" ]]; then
FEDERATIONS_DOMAIN_MAP="${FEDERATION_NAME}=${DNS_ZONE_NAME}"
fi
if [[ -n "${FEDERATIONS_DOMAIN_MAP}" ]]; then
sed -i -e "s/{{ pillar\['federations_domain_map'\] }}/- --federations=${FEDERATIONS_DOMAIN_MAP}/g" kubedns-deployment.yaml
else
sed -i -e "/{{ pillar\['federations_domain_map'\] }}/d" kubedns-deployment.yaml
fi
else
sed -i -e "/{{ pillar\['federations_domain_map'\] }}/d" kubedns-deployment.yaml
fi
sed -e "s/{{ pillar\['dns_server'\] }}/${DNS_SERVER_IP}/g" "${KUBE_ROOT}/cluster/addons/dns/kubedns-svc.yaml.in" >| kubedns-svc.yaml
# TODO update to dns role once we have one.
${KUBECTL} --kubeconfig="${CERT_DIR}/admin.kubeconfig" create clusterrolebinding system:kube-dns --clusterrole=cluster-admin --serviceaccount=kube-system:default
# use kubectl to create kubedns deployment and service
${KUBECTL} --kubeconfig="${CERT_DIR}/admin.kubeconfig" --namespace=kube-system create -f kubedns-deployment.yaml
${KUBECTL} --kubeconfig="${CERT_DIR}/admin.kubeconfig" --namespace=kube-system create -f kubedns-svc.yaml
echo "Kube-dns deployment and service successfully deployed."
rm kubedns-deployment.yaml kubedns-svc.yaml
fi
}
function create_psp_policy {
echo "Create podsecuritypolicy policies for RBAC."
${KUBECTL} --kubeconfig="${CERT_DIR}/admin.kubeconfig" create -f ${KUBE_ROOT}/examples/podsecuritypolicy/rbac/policies.yaml
${KUBECTL} --kubeconfig="${CERT_DIR}/admin.kubeconfig" create -f ${KUBE_ROOT}/examples/podsecuritypolicy/rbac/roles.yaml
${KUBECTL} --kubeconfig="${CERT_DIR}/admin.kubeconfig" create -f ${KUBE_ROOT}/examples/podsecuritypolicy/rbac/bindings.yaml
}
function print_success {
if [[ "${START_MODE}" != "kubeletonly" ]]; then
cat <<EOF
Local Kubernetes cluster is running. Press Ctrl-C to shut it down.
Logs:
${APISERVER_LOG:-}
${CTLRMGR_LOG:-}
${PROXY_LOG:-}
${SCHEDULER_LOG:-}
EOF
fi
if [[ "${START_MODE}" == "all" ]]; then
echo " ${KUBELET_LOG}"
elif [[ "${START_MODE}" == "nokubelet" ]]; then
echo
echo "No kubelet was started because you set START_MODE=nokubelet"
echo "Run this script again with START_MODE=kubeletonly to run a kubelet"
fi
if [[ "${START_MODE}" != "kubeletonly" ]]; then
echo
cat <<EOF
To start using your cluster, you can open up another terminal/tab and run:
export KUBECONFIG=${CERT_DIR}/admin.kubeconfig
cluster/kubectl.sh
Alternatively, you can write to the default kubeconfig:
export KUBERNETES_PROVIDER=local
cluster/kubectl.sh config set-cluster local --server=https://${API_HOST}:${API_SECURE_PORT} --certificate-authority=${ROOT_CA_FILE}
cluster/kubectl.sh config set-credentials myself ${AUTH_ARGS}
cluster/kubectl.sh config set-context local --cluster=local --user=myself
cluster/kubectl.sh config use-context local
cluster/kubectl.sh
EOF
else
cat <<EOF
The kubelet was started.
Logs:
${KUBELET_LOG}
EOF
fi
}
# validate that etcd is: not running, in path, and has minimum required version.
kube::etcd::validate
if [ "${CONTAINER_RUNTIME}" == "docker" ] && ! kube::util::ensure_docker_daemon_connectivity; then
exit 1
fi
if [[ "${CONTAINER_RUNTIME}" == "rkt" ]]; then
test_rkt
fi
if [[ "${START_MODE}" != "kubeletonly" ]]; then
test_apiserver_off
fi
kube::util::test_openssl_installed
kube::util::test_cfssl_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!"
if [[ "${START_MODE}" != "kubeletonly" ]]; then
start_etcd
set_service_accounts
start_apiserver
start_controller_manager
start_kubeproxy
start_kubedns
fi
if [[ "${START_MODE}" != "nokubelet" ]]; then
## TODO remove this check if/when kubelet is supported on darwin
# Detect the OS name/arch and display appropriate error.
case "$(uname -s)" in
Darwin)
warning "kubelet is not currently supported in darwin, kubelet aborted."
KUBELET_LOG=""
;;
Linux)
start_kubelet
;;
*)
warning "Unsupported host OS. Must be Linux or Mac OS X, kubelet aborted."
;;
esac
fi
if [[ -n "${PSP_ADMISSION}" && "${ENABLE_RBAC}" = true ]]; then
create_psp_policy
fi
print_success
if [[ "${ENABLE_DAEMON}" = false ]]; then
while true; do sleep 1; done
fi
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