/
util.sh
executable file
·3521 lines (3194 loc) · 127 KB
/
util.sh
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#!/usr/bin/env bash
# Copyright 2017 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.
# A library of helper functions and constant for the local config.
# Use the config file specified in $KUBE_CONFIG_FILE, or default to
# config-default.sh.
readonly GCE_MAX_LOCAL_SSD=8
KUBE_ROOT=$(dirname "${BASH_SOURCE}")/../..
source "${KUBE_ROOT}/cluster/gce/${KUBE_CONFIG_FILE-"config-default.sh"}"
source "${KUBE_ROOT}/cluster/common.sh"
source "${KUBE_ROOT}/hack/lib/util.sh"
if [[ "${NODE_OS_DISTRIBUTION}" == "gci" || "${NODE_OS_DISTRIBUTION}" == "ubuntu" || "${NODE_OS_DISTRIBUTION}" == "custom" ]]; then
source "${KUBE_ROOT}/cluster/gce/${NODE_OS_DISTRIBUTION}/node-helper.sh"
else
echo "Cannot operate on cluster using node os distro: ${NODE_OS_DISTRIBUTION}" >&2
exit 1
fi
source "${KUBE_ROOT}/cluster/gce/windows/node-helper.sh"
if [[ "${MASTER_OS_DISTRIBUTION}" == "trusty" || "${MASTER_OS_DISTRIBUTION}" == "gci" || "${MASTER_OS_DISTRIBUTION}" == "ubuntu" ]]; then
source "${KUBE_ROOT}/cluster/gce/${MASTER_OS_DISTRIBUTION}/master-helper.sh"
else
echo "Cannot operate on cluster using master os distro: ${MASTER_OS_DISTRIBUTION}" >&2
exit 1
fi
if [[ ${NODE_LOCAL_SSDS:-} -ge 1 ]] && [[ ! -z ${NODE_LOCAL_SSDS_EXT:-} ]] ; then
echo -e "${color_red}Local SSD: Only one of NODE_LOCAL_SSDS and NODE_LOCAL_SSDS_EXT can be specified at once${color_norm}" >&2
exit 2
fi
if [[ "${MASTER_OS_DISTRIBUTION}" == "gci" ]]; then
DEFAULT_GCI_PROJECT=google-containers
if [[ "${GCI_VERSION}" == "cos"* ]]; then
DEFAULT_GCI_PROJECT=cos-cloud
fi
MASTER_IMAGE_PROJECT=${KUBE_GCE_MASTER_PROJECT:-${DEFAULT_GCI_PROJECT}}
# If the master image is not set, we use the latest GCI image.
# Otherwise, we respect whatever is set by the user.
MASTER_IMAGE=${KUBE_GCE_MASTER_IMAGE:-${GCI_VERSION}}
fi
# Sets node image based on the specified os distro. Currently this function only
# supports gci and debian.
#
# Requires:
# NODE_OS_DISTRIBUTION
# Sets:
# DEFAULT_GCI_PROJECT
# NODE_IMAGE
# NODE_IMAGE_PROJECT
function set-linux-node-image() {
if [[ "${NODE_OS_DISTRIBUTION}" == "gci" ]]; then
DEFAULT_GCI_PROJECT=google-containers
if [[ "${GCI_VERSION}" == "cos"* ]]; then
DEFAULT_GCI_PROJECT=cos-cloud
fi
# If the node image is not set, we use the latest GCI image.
# Otherwise, we respect whatever is set by the user.
NODE_IMAGE=${KUBE_GCE_NODE_IMAGE:-${GCI_VERSION}}
NODE_IMAGE_PROJECT=${KUBE_GCE_NODE_PROJECT:-${DEFAULT_GCI_PROJECT}}
fi
}
# Requires:
# WINDOWS_NODE_OS_DISTRIBUTION
# Sets:
# WINDOWS_NODE_IMAGE_FAMILY
# WINDOWS_NODE_IMAGE_PROJECT
function set-windows-node-image() {
WINDOWS_NODE_IMAGE_PROJECT="windows-cloud"
if [[ "${WINDOWS_NODE_OS_DISTRIBUTION}" == "win2019" ]]; then
WINDOWS_NODE_IMAGE_FAMILY="windows-2019-core-for-containers"
elif [[ "${WINDOWS_NODE_OS_DISTRIBUTION}" == "win1809" ]]; then
WINDOWS_NODE_IMAGE_FAMILY="windows-1809-core-for-containers"
else
echo "Unknown WINDOWS_NODE_OS_DISTRIBUTION ${WINDOWS_NODE_OS_DISTRIBUTION}" >&2
exit 1
fi
}
set-linux-node-image
set-windows-node-image
# Verify cluster autoscaler configuration.
if [[ "${ENABLE_CLUSTER_AUTOSCALER}" == "true" ]]; then
if [[ -z $AUTOSCALER_MIN_NODES ]]; then
echo "AUTOSCALER_MIN_NODES not set."
exit 1
fi
if [[ -z $AUTOSCALER_MAX_NODES ]]; then
echo "AUTOSCALER_MAX_NODES not set."
exit 1
fi
fi
# These prefixes must not be prefixes of each other, so that they can be used to
# detect mutually exclusive sets of nodes.
NODE_INSTANCE_PREFIX=${NODE_INSTANCE_PREFIX:-"${INSTANCE_PREFIX}-minion"}
WINDOWS_NODE_INSTANCE_PREFIX=${WINDOWS_NODE_INSTANCE_PREFIX:-"${INSTANCE_PREFIX}-windows-node"}
NODE_TAGS="${NODE_TAG}"
ALLOCATE_NODE_CIDRS=true
PREEXISTING_NETWORK=false
PREEXISTING_NETWORK_MODE=""
KUBE_PROMPT_FOR_UPDATE=${KUBE_PROMPT_FOR_UPDATE:-"n"}
# How long (in seconds) to wait for cluster initialization.
KUBE_CLUSTER_INITIALIZATION_TIMEOUT=${KUBE_CLUSTER_INITIALIZATION_TIMEOUT:-300}
function join_csv() {
local IFS=','; echo "$*";
}
# This function returns the first string before the comma
function split_csv() {
echo "$*" | cut -d',' -f1
}
# Verify prereqs
function verify-prereqs() {
local cmd
# we use openssl to generate certs
kube::util::test_openssl_installed
# ensure a version supported by easyrsa is installed
if [ "$(openssl version | cut -d\ -f1)" == "LibreSSL" ]; then
echo "LibreSSL is not supported. Please ensure openssl points to an OpenSSL binary"
if [ "$(uname -s)" == "Darwin" ]; then
echo 'On macOS we recommend using homebrew and adding "$(brew --prefix openssl)/bin" to your PATH'
fi
exit 1
fi
# we use gcloud to create the cluster, gsutil to stage binaries and data
for cmd in gcloud gsutil; do
if ! which "${cmd}" >/dev/null; then
local resp="n"
if [[ "${KUBE_PROMPT_FOR_UPDATE}" == "y" ]]; then
echo "Can't find ${cmd} in PATH. Do you wish to install the Google Cloud SDK? [Y/n]"
read resp
fi
if [[ "${resp}" != "n" && "${resp}" != "N" ]]; then
curl https://sdk.cloud.google.com | bash
fi
if ! which "${cmd}" >/dev/null; then
echo "Can't find ${cmd} in PATH, please fix and retry. The Google Cloud " >&2
echo "SDK can be downloaded from https://cloud.google.com/sdk/." >&2
exit 1
fi
fi
done
update-or-verify-gcloud
}
# Use the gcloud defaults to find the project. If it is already set in the
# environment then go with that.
#
# Vars set:
# PROJECT
# NETWORK_PROJECT
# PROJECT_REPORTED
function detect-project() {
if [[ -z "${PROJECT-}" ]]; then
PROJECT=$(gcloud config list project --format 'value(core.project)')
fi
NETWORK_PROJECT=${NETWORK_PROJECT:-${PROJECT}}
if [[ -z "${PROJECT-}" ]]; then
echo "Could not detect Google Cloud Platform project. Set the default project using " >&2
echo "'gcloud config set project <PROJECT>'" >&2
exit 1
fi
if [[ -z "${PROJECT_REPORTED-}" ]]; then
echo "Project: ${PROJECT}" >&2
echo "Network Project: ${NETWORK_PROJECT}" >&2
echo "Zone: ${ZONE}" >&2
PROJECT_REPORTED=true
fi
}
# Use gsutil to get the md5 hash for a particular tar
function gsutil_get_tar_md5() {
# location_tar could be local or in the cloud
# local tar_location example ./_output/release-tars/kubernetes-server-linux-amd64.tar.gz
# cloud tar_location example gs://kubernetes-staging-PROJECT/kubernetes-devel/kubernetes-server-linux-amd64.tar.gz
local -r tar_location=$1
#parse the output and return the md5 hash
#the sed command at the end removes whitespace
local -r tar_md5=$(gsutil hash -h -m ${tar_location} 2>/dev/null | grep "Hash (md5):" | awk -F ':' '{print $2}' | sed 's/^[[:space:]]*//g')
echo "${tar_md5}"
}
# Copy a release tar and its accompanying hash.
function copy-to-staging() {
local -r staging_path=$1
local -r gs_url=$2
local -r tar=$3
local -r hash=$4
local -r basename_tar=$(basename ${tar})
#check whether this tar alread exists and has the same hash
#if it matches, then don't bother uploading it again
#remote_tar_md5 checks the remote location for the existing tarball and its md5
#staging_path example gs://kubernetes-staging-PROJECT/kubernetes-devel
#basename_tar example kubernetes-server-linux-amd64.tar.gz
local -r remote_tar_md5=$(gsutil_get_tar_md5 "${staging_path}/${basename_tar}")
if [[ -n ${remote_tar_md5} ]]; then
#local_tar_md5 checks the remote location for the existing tarball and its md5 hash
#tar example ./_output/release-tars/kubernetes-server-linux-amd64.tar.gz
local -r local_tar_md5=$(gsutil_get_tar_md5 "${tar}")
if [[ "${remote_tar_md5}" == "${local_tar_md5}" ]]; then
echo "+++ ${basename_tar} uploaded earlier, cloud and local file md5 match (md5 = ${local_tar_md5})"
return 0
fi
fi
echo "${hash}" > "${tar}.sha1"
gsutil -m -q -h "Cache-Control:private, max-age=0" cp "${tar}" "${tar}.sha1" "${staging_path}"
gsutil -m acl ch -g all:R "${gs_url}" "${gs_url}.sha1" >/dev/null 2>&1
echo "+++ ${basename_tar} uploaded (sha1 = ${hash})"
}
# Given the cluster zone, return the list of regional GCS release
# bucket suffixes for the release in preference order. GCS doesn't
# give us an API for this, so we hardcode it.
#
# Assumed vars:
# RELEASE_REGION_FALLBACK
# REGIONAL_KUBE_ADDONS
# ZONE
# Vars set:
# PREFERRED_REGION
function set-preferred-region() {
case ${ZONE} in
asia-*)
PREFERRED_REGION=("asia" "us" "eu")
;;
europe-*)
PREFERRED_REGION=("eu" "us" "asia")
;;
*)
PREFERRED_REGION=("us" "eu" "asia")
;;
esac
if [[ "${RELEASE_REGION_FALLBACK}" != "true" ]]; then
PREFERRED_REGION=( "${PREFERRED_REGION[0]}" )
fi
}
# Take the local tar files and upload them to Google Storage. They will then be
# downloaded by the master as part of the start up script for the master.
#
# Assumed vars:
# PROJECT
# SERVER_BINARY_TAR
# NODE_BINARY_TAR (optional)
# KUBE_MANIFESTS_TAR
# ZONE
# Vars set:
# SERVER_BINARY_TAR_URL
# SERVER_BINARY_TAR_HASH
# NODE_BINARY_TAR_URL
# NODE_BINARY_TAR_HASH
# KUBE_MANIFESTS_TAR_URL
# KUBE_MANIFESTS_TAR_HASH
function upload-tars() {
SERVER_BINARY_TAR_URL=
SERVER_BINARY_TAR_HASH=
NODE_BINARY_TAR_URL=
NODE_BINARY_TAR_HASH=
KUBE_MANIFESTS_TAR_URL=
KUBE_MANIFESTS_TAR_HASH=
local project_hash
if which md5 > /dev/null 2>&1; then
project_hash=$(md5 -q -s "$PROJECT")
else
project_hash=$(echo -n "$PROJECT" | md5sum | awk '{ print $1 }')
fi
# This requires 1 million projects before the probability of collision is 50%
# that's probably good enough for now :P
project_hash=${project_hash:0:10}
set-preferred-region
if [[ "${ENABLE_DOCKER_REGISTRY_CACHE:-}" == "true" ]]; then
DOCKER_REGISTRY_MIRROR_URL="https://mirror.gcr.io"
fi
SERVER_BINARY_TAR_HASH=$(sha1sum-file "${SERVER_BINARY_TAR}")
if [[ -n "${NODE_BINARY_TAR:-}" ]]; then
NODE_BINARY_TAR_HASH=$(sha1sum-file "${NODE_BINARY_TAR}")
fi
if [[ -n "${KUBE_MANIFESTS_TAR:-}" ]]; then
KUBE_MANIFESTS_TAR_HASH=$(sha1sum-file "${KUBE_MANIFESTS_TAR}")
fi
local server_binary_tar_urls=()
local node_binary_tar_urls=()
local kube_manifest_tar_urls=()
for region in "${PREFERRED_REGION[@]}"; do
suffix="-${region}"
if [[ "${suffix}" == "-us" ]]; then
suffix=""
fi
local staging_bucket="gs://kubernetes-staging-${project_hash}${suffix}"
# Ensure the buckets are created
if ! gsutil ls "${staging_bucket}" >/dev/null; then
echo "Creating ${staging_bucket}"
gsutil mb -l "${region}" "${staging_bucket}"
fi
local staging_path="${staging_bucket}/${INSTANCE_PREFIX}-devel"
echo "+++ Staging tars to Google Storage: ${staging_path}"
local server_binary_gs_url="${staging_path}/${SERVER_BINARY_TAR##*/}"
copy-to-staging "${staging_path}" "${server_binary_gs_url}" "${SERVER_BINARY_TAR}" "${SERVER_BINARY_TAR_HASH}"
if [[ -n "${NODE_BINARY_TAR:-}" ]]; then
local node_binary_gs_url="${staging_path}/${NODE_BINARY_TAR##*/}"
copy-to-staging "${staging_path}" "${node_binary_gs_url}" "${NODE_BINARY_TAR}" "${NODE_BINARY_TAR_HASH}"
fi
# Convert from gs:// URL to an https:// URL
server_binary_tar_urls+=("${server_binary_gs_url/gs:\/\//https://storage.googleapis.com/}")
if [[ -n "${NODE_BINARY_TAR:-}" ]]; then
node_binary_tar_urls+=("${node_binary_gs_url/gs:\/\//https://storage.googleapis.com/}")
fi
if [[ -n "${KUBE_MANIFESTS_TAR:-}" ]]; then
local kube_manifests_gs_url="${staging_path}/${KUBE_MANIFESTS_TAR##*/}"
copy-to-staging "${staging_path}" "${kube_manifests_gs_url}" "${KUBE_MANIFESTS_TAR}" "${KUBE_MANIFESTS_TAR_HASH}"
# Convert from gs:// URL to an https:// URL
kube_manifests_tar_urls+=("${kube_manifests_gs_url/gs:\/\//https://storage.googleapis.com/}")
fi
done
SERVER_BINARY_TAR_URL=$(join_csv "${server_binary_tar_urls[@]}")
if [[ -n "${NODE_BINARY_TAR:-}" ]]; then
NODE_BINARY_TAR_URL=$(join_csv "${node_binary_tar_urls[@]}")
fi
if [[ -n "${KUBE_MANIFESTS_TAR:-}" ]]; then
KUBE_MANIFESTS_TAR_URL=$(join_csv "${kube_manifests_tar_urls[@]}")
fi
}
# Detect Linux and Windows nodes created in the instance group.
#
# Assumed vars:
# NODE_INSTANCE_PREFIX
# WINDOWS_NODE_INSTANCE_PREFIX
# Vars set:
# NODE_NAMES
# INSTANCE_GROUPS
# WINDOWS_NODE_NAMES
# WINDOWS_INSTANCE_GROUPS
function detect-node-names() {
detect-project
INSTANCE_GROUPS=()
INSTANCE_GROUPS+=($(gcloud compute instance-groups managed list \
--project "${PROJECT}" \
--filter "name ~ '${NODE_INSTANCE_PREFIX}-.+' AND zone:(${ZONE})" \
--format='value(name)' || true))
WINDOWS_INSTANCE_GROUPS=()
WINDOWS_INSTANCE_GROUPS+=($(gcloud compute instance-groups managed list \
--project "${PROJECT}" \
--filter "name ~ '${WINDOWS_NODE_INSTANCE_PREFIX}-.+' AND zone:(${ZONE})" \
--format='value(name)' || true))
NODE_NAMES=()
if [[ -n "${INSTANCE_GROUPS[@]:-}" ]]; then
for group in "${INSTANCE_GROUPS[@]}"; do
NODE_NAMES+=($(gcloud compute instance-groups managed list-instances \
"${group}" --zone "${ZONE}" --project "${PROJECT}" \
--format='value(instance)'))
done
fi
# Add heapster node name to the list too (if it exists).
if [[ -n "${HEAPSTER_MACHINE_TYPE:-}" ]]; then
NODE_NAMES+=("${NODE_INSTANCE_PREFIX}-heapster")
fi
WINDOWS_NODE_NAMES=()
if [[ -n "${WINDOWS_INSTANCE_GROUPS[@]:-}" ]]; then
for group in "${WINDOWS_INSTANCE_GROUPS[@]}"; do
WINDOWS_NODE_NAMES+=($(gcloud compute instance-groups managed \
list-instances "${group}" --zone "${ZONE}" --project "${PROJECT}" \
--format='value(instance)'))
done
fi
echo "INSTANCE_GROUPS=${INSTANCE_GROUPS[*]:-}" >&2
echo "NODE_NAMES=${NODE_NAMES[*]:-}" >&2
}
# Detect the information about the minions
#
# Assumed vars:
# ZONE
# Vars set:
# NODE_NAMES
# KUBE_NODE_IP_ADDRESSES (array)
function detect-nodes() {
detect-project
detect-node-names
KUBE_NODE_IP_ADDRESSES=()
for (( i=0; i<${#NODE_NAMES[@]}; i++)); do
local node_ip=$(gcloud compute instances describe --project "${PROJECT}" --zone "${ZONE}" \
"${NODE_NAMES[$i]}" --format='value(networkInterfaces[0].accessConfigs[0].natIP)')
if [[ -z "${node_ip-}" ]] ; then
echo "Did not find ${NODE_NAMES[$i]}" >&2
else
echo "Found ${NODE_NAMES[$i]} at ${node_ip}"
KUBE_NODE_IP_ADDRESSES+=("${node_ip}")
fi
done
if [[ -z "${KUBE_NODE_IP_ADDRESSES-}" ]]; then
echo "Could not detect Kubernetes minion nodes. Make sure you've launched a cluster with 'kube-up.sh'" >&2
exit 1
fi
}
# Detect the IP for the master
#
# Assumed vars:
# MASTER_NAME
# ZONE
# REGION
# Vars set:
# KUBE_MASTER
# KUBE_MASTER_IP
function detect-master() {
detect-project
KUBE_MASTER=${MASTER_NAME}
echo "Trying to find master named '${MASTER_NAME}'" >&2
if [[ -z "${KUBE_MASTER_IP-}" ]]; then
local master_address_name="${MASTER_NAME}-ip"
echo "Looking for address '${master_address_name}'" >&2
if ! KUBE_MASTER_IP=$(gcloud compute addresses describe "${master_address_name}" \
--project "${PROJECT}" --region "${REGION}" -q --format='value(address)') || \
[[ -z "${KUBE_MASTER_IP-}" ]]; then
echo "Could not detect Kubernetes master node. Make sure you've launched a cluster with 'kube-up.sh'" >&2
exit 1
fi
fi
echo "Using master: $KUBE_MASTER (external IP: $KUBE_MASTER_IP)" >&2
}
function load-or-gen-kube-bearertoken() {
if [[ ! -z "${KUBE_CONTEXT:-}" ]]; then
get-kubeconfig-bearertoken
fi
if [[ -z "${KUBE_BEARER_TOKEN:-}" ]]; then
gen-kube-bearertoken
fi
}
# Figure out which binary use on the server and assure it is available.
# If KUBE_VERSION is specified use binaries specified by it, otherwise
# use local dev binaries.
#
# Assumed vars:
# KUBE_VERSION
# KUBE_RELEASE_VERSION_REGEX
# KUBE_CI_VERSION_REGEX
# Vars set:
# KUBE_TAR_HASH
# SERVER_BINARY_TAR_URL
# SERVER_BINARY_TAR_HASH
function tars_from_version() {
local sha1sum=""
if which sha1sum >/dev/null 2>&1; then
sha1sum="sha1sum"
else
sha1sum="shasum -a1"
fi
if [[ -z "${KUBE_VERSION-}" ]]; then
find-release-tars
upload-tars
elif [[ ${KUBE_VERSION} =~ ${KUBE_RELEASE_VERSION_REGEX} ]]; then
SERVER_BINARY_TAR_URL="https://storage.googleapis.com/kubernetes-release/release/${KUBE_VERSION}/kubernetes-server-linux-amd64.tar.gz"
# TODO: Clean this up.
KUBE_MANIFESTS_TAR_URL="${SERVER_BINARY_TAR_URL/server-linux-amd64/manifests}"
KUBE_MANIFESTS_TAR_HASH=$(curl ${KUBE_MANIFESTS_TAR_URL} --silent --show-error | ${sha1sum} | awk '{print $1}')
elif [[ ${KUBE_VERSION} =~ ${KUBE_CI_VERSION_REGEX} ]]; then
SERVER_BINARY_TAR_URL="https://storage.googleapis.com/kubernetes-release-dev/ci/${KUBE_VERSION}/kubernetes-server-linux-amd64.tar.gz"
# TODO: Clean this up.
KUBE_MANIFESTS_TAR_URL="${SERVER_BINARY_TAR_URL/server-linux-amd64/manifests}"
KUBE_MANIFESTS_TAR_HASH=$(curl ${KUBE_MANIFESTS_TAR_URL} --silent --show-error | ${sha1sum} | awk '{print $1}')
else
echo "Version doesn't match regexp" >&2
exit 1
fi
if ! SERVER_BINARY_TAR_HASH=$(curl -Ss --fail "${SERVER_BINARY_TAR_URL}.sha1"); then
echo "Failure trying to curl release .sha1"
fi
if ! curl -Ss --head "${SERVER_BINARY_TAR_URL}" >&/dev/null; then
echo "Can't find release at ${SERVER_BINARY_TAR_URL}" >&2
exit 1
fi
}
# Reads kube-env metadata from master
#
# Assumed vars:
# KUBE_MASTER
# PROJECT
# ZONE
function get-master-env() {
# TODO(zmerlynn): Make this more reliable with retries.
gcloud compute --project ${PROJECT} ssh --zone ${ZONE} ${KUBE_MASTER} --command \
"curl --fail --silent -H 'Metadata-Flavor: Google' \
'http://metadata/computeMetadata/v1/instance/attributes/kube-env'" 2>/dev/null
gcloud compute --project ${PROJECT} ssh --zone ${ZONE} ${KUBE_MASTER} --command \
"curl --fail --silent -H 'Metadata-Flavor: Google' \
'http://metadata/computeMetadata/v1/instance/attributes/kube-master-certs'" 2>/dev/null
}
# Quote something appropriate for a yaml string.
#
# TODO(zmerlynn): Note that this function doesn't so much "quote" as
# "strip out quotes", and we really should be using a YAML library for
# this, but PyYAML isn't shipped by default, and *rant rant rant ... SIGH*
function yaml-quote {
echo "'$(echo "${@:-}" | sed -e "s/'/''/g")'"
}
# Writes the cluster location into a temporary file.
# Assumed vars
# ZONE
function write-cluster-location {
cat >"${KUBE_TEMP}/cluster-location.txt" << EOF
${ZONE}
EOF
}
# Writes the cluster name into a temporary file.
# Assumed vars
# CLUSTER_NAME
function write-cluster-name {
cat >"${KUBE_TEMP}/cluster-name.txt" << EOF
${CLUSTER_NAME}
EOF
}
function write-master-env {
# If the user requested that the master be part of the cluster, set the
# environment variable to program the master kubelet to register itself.
if [[ "${REGISTER_MASTER_KUBELET:-}" == "true" && -z "${KUBELET_APISERVER:-}" ]]; then
KUBELET_APISERVER="${MASTER_NAME}"
fi
if [[ -z "${KUBERNETES_MASTER_NAME:-}" ]]; then
KUBERNETES_MASTER_NAME="${MASTER_NAME}"
fi
construct-linux-kubelet-flags true
build-linux-kube-env true "${KUBE_TEMP}/master-kube-env.yaml"
build-kubelet-config true "linux" "${KUBE_TEMP}/master-kubelet-config.yaml"
build-kube-master-certs "${KUBE_TEMP}/kube-master-certs.yaml"
}
function write-linux-node-env {
if [[ -z "${KUBERNETES_MASTER_NAME:-}" ]]; then
KUBERNETES_MASTER_NAME="${MASTER_NAME}"
fi
construct-linux-kubelet-flags false
build-linux-kube-env false "${KUBE_TEMP}/node-kube-env.yaml"
build-kubelet-config false "linux" "${KUBE_TEMP}/node-kubelet-config.yaml"
}
function write-windows-node-env {
construct-windows-kubelet-flags
construct-windows-kubeproxy-flags
build-windows-kube-env "${KUBE_TEMP}/windows-node-kube-env.yaml"
build-kubelet-config false "windows" "${KUBE_TEMP}/windows-node-kubelet-config.yaml"
}
function build-linux-node-labels {
local master=$1
local node_labels=""
if [[ "${KUBE_PROXY_DAEMONSET:-}" == "true" && "${master}" != "true" ]]; then
# Add kube-proxy daemonset label to node to avoid situation during cluster
# upgrade/downgrade when there are two instances of kube-proxy running on a node.
# TODO(liggitt): drop beta.kubernetes.io/kube-proxy-ds-ready in 1.16
node_labels="node.kubernetes.io/kube-proxy-ds-ready=true,beta.kubernetes.io/kube-proxy-ds-ready=true"
fi
if [[ -n "${NODE_LABELS:-}" ]]; then
node_labels="${node_labels:+${node_labels},}${NODE_LABELS}"
fi
if [[ -n "${NON_MASTER_NODE_LABELS:-}" && "${master}" != "true" ]]; then
node_labels="${node_labels:+${node_labels},}${NON_MASTER_NODE_LABELS}"
fi
echo $node_labels
}
function build-windows-node-labels {
local node_labels=""
if [[ -n "${WINDOWS_NODE_LABELS:-}" ]]; then
node_labels="${node_labels:+${node_labels},}${WINDOWS_NODE_LABELS}"
fi
if [[ -n "${WINDOWS_NON_MASTER_NODE_LABELS:-}" ]]; then
node_labels="${node_labels:+${node_labels},}${WINDOWS_NON_MASTER_NODE_LABELS}"
fi
echo $node_labels
}
# yaml-map-string-stringarray converts the encoded structure to yaml format, and echoes the result
# under the provided name. If the encoded structure is empty, echoes nothing.
# 1: name to be output in yaml
# 2: encoded map-string-string (which may contain duplicate keys - resulting in map-string-stringarray)
# 3: key-value separator (defaults to ':')
# 4: item separator (defaults to ',')
function yaml-map-string-stringarray {
declare -r name="${1}"
declare -r encoded="${2}"
declare -r kv_sep="${3:-:}"
declare -r item_sep="${4:-,}"
declare -a pairs # indexed array
declare -A map # associative array
IFS="${item_sep}" read -ra pairs <<<"${encoded}" # split on item_sep
for pair in "${pairs[@]}"; do
declare key
declare value
IFS="${kv_sep}" read -r key value <<<"${pair}" # split on kv_sep
map[$key]="${map[$key]+${map[$key]}${item_sep}}${value}" # append values from duplicate keys
done
# only output if there is a non-empty map
if [[ ${#map[@]} -gt 0 ]]; then
echo "${name}:"
for k in "${!map[@]}"; do
echo " ${k}:"
declare -a values
IFS="${item_sep}" read -ra values <<<"${map[$k]}"
for val in "${values[@]}"; do
# declare across two lines so errexit can catch failures
declare v
v=$(yaml-quote "${val}")
echo " - ${v}"
done
done
fi
}
# yaml-map-string-string converts the encoded structure to yaml format, and echoes the result
# under the provided name. If the encoded structure is empty, echoes nothing.
# 1: name to be output in yaml
# 2: encoded map-string-string (no duplicate keys)
# 3: bool, whether to yaml-quote the value string in the output (defaults to true)
# 4: key-value separator (defaults to ':')
# 5: item separator (defaults to ',')
function yaml-map-string-string {
declare -r name="${1}"
declare -r encoded="${2}"
declare -r quote_val_string="${3:-true}"
declare -r kv_sep="${4:-:}"
declare -r item_sep="${5:-,}"
declare -a pairs # indexed array
declare -A map # associative array
IFS="${item_sep}" read -ra pairs <<<"${encoded}" # split on item_sep # TODO(mtaufen): try quoting this too
for pair in "${pairs[@]}"; do
declare key
declare value
IFS="${kv_sep}" read -r key value <<<"${pair}" # split on kv_sep
map[$key]="${value}" # add to associative array
done
# only output if there is a non-empty map
if [[ ${#map[@]} -gt 0 ]]; then
echo "${name}:"
for k in "${!map[@]}"; do
if [[ "${quote_val_string}" == "true" ]]; then
# declare across two lines so errexit can catch failures
declare v
v=$(yaml-quote "${map[$k]}")
echo " ${k}: ${v}"
else
echo " ${k}: ${map[$k]}"
fi
done
fi
}
# Returns kubelet flags used on both Linux and Windows nodes.
function construct-common-kubelet-flags {
local flags="${KUBELET_TEST_LOG_LEVEL:-"--v=2"} ${KUBELET_TEST_ARGS:-}"
flags+=" --cloud-provider=gce"
# TODO(mtaufen): ROTATE_CERTIFICATES seems unused; delete it?
if [[ -n "${ROTATE_CERTIFICATES:-}" ]]; then
flags+=" --rotate-certificates=true"
fi
if [[ -n "${MAX_PODS_PER_NODE:-}" ]]; then
flags+=" --max-pods=${MAX_PODS_PER_NODE}"
fi
echo $flags
}
# Sets KUBELET_ARGS with the kubelet flags for Linux nodes.
# $1: if 'true', we're rendering flags for a master, else a node
function construct-linux-kubelet-flags {
local master="$1"
local flags="$(construct-common-kubelet-flags)"
flags+=" --allow-privileged=true"
# Keep in sync with CONTAINERIZED_MOUNTER_HOME in configure-helper.sh
flags+=" --experimental-mounter-path=/home/kubernetes/containerized_mounter/mounter"
flags+=" --experimental-check-node-capabilities-before-mount=true"
# Keep in sync with the mkdir command in configure-helper.sh (until the TODO is resolved)
flags+=" --cert-dir=/var/lib/kubelet/pki/"
# Configure the directory that the Kubelet should use to store dynamic config checkpoints
flags+=" --dynamic-config-dir=/var/lib/kubelet/dynamic-config"
if [[ "${master}" == "true" ]]; then
flags+=" ${MASTER_KUBELET_TEST_ARGS:-}"
if [[ "${REGISTER_MASTER_KUBELET:-false}" == "true" ]]; then
#TODO(mikedanese): allow static pods to start before creating a client
#flags+=" --bootstrap-kubeconfig=/var/lib/kubelet/bootstrap-kubeconfig"
#flags+=" --kubeconfig=/var/lib/kubelet/kubeconfig"
flags+=" --kubeconfig=/var/lib/kubelet/bootstrap-kubeconfig"
flags+=" --register-schedulable=false"
fi
else # For nodes
flags+=" ${NODE_KUBELET_TEST_ARGS:-}"
flags+=" --bootstrap-kubeconfig=/var/lib/kubelet/bootstrap-kubeconfig"
flags+=" --kubeconfig=/var/lib/kubelet/kubeconfig"
fi
# Network plugin
if [[ -n "${NETWORK_PROVIDER:-}" || -n "${NETWORK_POLICY_PROVIDER:-}" ]]; then
flags+=" --cni-bin-dir=/home/kubernetes/bin"
if [[ "${NETWORK_POLICY_PROVIDER:-}" == "calico" || "${ENABLE_NETD:-}" == "true" ]]; then
# Calico uses CNI always.
# Note that network policy won't work for master node.
if [[ "${master}" == "true" ]]; then
flags+=" --network-plugin=${NETWORK_PROVIDER}"
else
flags+=" --network-plugin=cni"
fi
else
# Otherwise use the configured value.
flags+=" --network-plugin=${NETWORK_PROVIDER}"
fi
fi
if [[ -n "${NON_MASQUERADE_CIDR:-}" ]]; then
flags+=" --non-masquerade-cidr=${NON_MASQUERADE_CIDR}"
fi
flags+=" --volume-plugin-dir=${VOLUME_PLUGIN_DIR}"
local node_labels="$(build-linux-node-labels ${master})"
if [[ -n "${node_labels:-}" ]]; then
flags+=" --node-labels=${node_labels}"
fi
if [[ -n "${NODE_TAINTS:-}" ]]; then
flags+=" --register-with-taints=${NODE_TAINTS}"
fi
if [[ -n "${CONTAINER_RUNTIME:-}" ]]; then
flags+=" --container-runtime=${CONTAINER_RUNTIME}"
fi
if [[ -n "${CONTAINER_RUNTIME_ENDPOINT:-}" ]]; then
flags+=" --container-runtime-endpoint=${CONTAINER_RUNTIME_ENDPOINT}"
fi
KUBELET_ARGS="${flags}"
}
# Sets KUBELET_ARGS with the kubelet flags for Windows nodes.
function construct-windows-kubelet-flags {
local flags="$(construct-common-kubelet-flags)"
# Note: NODE_KUBELET_TEST_ARGS is empty in typical kube-up runs.
flags+=" ${NODE_KUBELET_TEST_ARGS:-}"
local node_labels="$(build-windows-node-labels)"
if [[ -n "${node_labels:-}" ]]; then
flags+=" --node-labels=${node_labels}"
fi
# Concatenate common and windows-only node taints and apply them.
local node_taints="${NODE_TAINTS:-}"
if [[ -n "${node_taints}" && -n "${WINDOWS_NODE_TAINTS:-}" ]]; then
node_taints+=":${WINDOWS_NODE_TAINTS}"
else
node_taints="${WINDOWS_NODE_TAINTS:-}"
fi
if [[ -n "${node_taints}" ]]; then
flags+=" --register-with-taints=${node_taints}"
fi
# Many of these flags were adapted from
# https://github.com/Microsoft/SDN/blob/master/Kubernetes/windows/start-kubelet.ps1.
flags+=" --config=${WINDOWS_KUBELET_CONFIG_FILE}"
# Path to a kubeconfig file that will be used to get client certificate for
# kubelet. If the file specified by --kubeconfig does not exist, the bootstrap
# kubeconfig is used to request a client certificate from the API server. On
# success, a kubeconfig file referencing the generated client certificate and
# key is written to the path specified by --kubeconfig. The client certificate
# and key file will be stored in the directory pointed by --cert-dir.
#
# See also:
# https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet-tls-bootstrapping/
flags+=" --bootstrap-kubeconfig=${WINDOWS_BOOTSTRAP_KUBECONFIG_FILE}"
flags+=" --kubeconfig=${WINDOWS_KUBECONFIG_FILE}"
# The directory where the TLS certs are located.
flags+=" --cert-dir=${WINDOWS_PKI_DIR}"
flags+=" --network-plugin=cni"
flags+=" --cni-bin-dir=${WINDOWS_CNI_DIR}"
flags+=" --cni-conf-dir=${WINDOWS_CNI_CONFIG_DIR}"
flags+=" --pod-manifest-path=${WINDOWS_MANIFESTS_DIR}"
# Windows images are large and we don't have gcr mirrors yet. Allow longer
# pull progress deadline.
flags+=" --image-pull-progress-deadline=5m"
flags+=" --enable-debugging-handlers=true"
# Configure kubelet to run as a windows service.
flags+=" --windows-service=true"
# TODO(mtaufen): Configure logging for kubelet running as a service. I haven't
# been able to figure out how to direct stdout/stderr into log files when
# configuring it to run via sc.exe, so we just manually override logging
# config here.
flags+=" --log-file=${WINDOWS_LOGS_DIR}\kubelet.log"
# klog sets this to true internally, so need to override to false so we
# actually log to the file
flags+=" --logtostderr=false"
# Configure flags with explicit empty string values. We can't escape
# double-quotes, because they still break sc.exe after expansion in the
# binPath parameter, and single-quotes get parsed as characters instead of
# string delimiters.
flags+=" --resolv-conf="
# Both --cgroups-per-qos and --enforce-node-allocatable should be disabled on
# windows; the latter requires the former to be enabled to work.
flags+=" --cgroups-per-qos=false --enforce-node-allocatable="
# Turn off kernel memory cgroup notification.
flags+=" --experimental-kernel-memcg-notification=false"
KUBELET_ARGS="${flags}"
}
function construct-windows-kubeproxy-flags {
local flags=""
# Use the same log level as the Kubelet during tests.
flags+=" ${KUBELET_TEST_LOG_LEVEL:-"--v=2"}"
# Windows uses kernelspace proxymode
flags+=" --proxy-mode=kernelspace"
# Configure kube-proxy to run as a windows service.
flags+=" --windows-service=true"
# TODO(mtaufen): Configure logging for kube-proxy running as a service.
# I haven't been able to figure out how to direct stdout/stderr into log
# files when configuring it to run via sc.exe, so we just manually
# override logging config here.
flags+=" --log-file=${WINDOWS_LOGS_DIR}\kube-proxy.log"
# klog sets this to true internally, so need to override to false
# so we actually log to the file
flags+=" --logtostderr=false"
# Configure flags with explicit empty string values. We can't escape
# double-quotes, because they still break sc.exe after expansion in the
# binPath parameter, and single-quotes get parsed as characters instead
# of string delimiters.
flags+=" --resource-container="
KUBEPROXY_ARGS="${flags}"
}
# $1: if 'true', we're rendering config for a master, else a node
function build-kubelet-config {
local master="$1"
local os="$2"
local file="$3"
rm -f "${file}"
{
print-common-kubelet-config
if [[ "${master}" == "true" ]]; then
print-master-kubelet-config
else
print-common-node-kubelet-config
if [[ "${os}" == "linux" ]]; then
print-linux-node-kubelet-config
elif [[ "${os}" == "windows" ]]; then
print-windows-node-kubelet-config
else
echo "Unknown OS ${os}" >&2
exit 1
fi
fi
} > "${file}"
}
# cat the Kubelet config yaml in common between masters, linux nodes, and
# windows nodes
function print-common-kubelet-config {
declare quoted_dns_server_ip
declare quoted_dns_domain
quoted_dns_server_ip=$(yaml-quote "${DNS_SERVER_IP}")
if [[ "${ENABLE_NODELOCAL_DNS:-}" == "true" ]]; then
quoted_dns_server_ip=$(yaml-quote "${LOCAL_DNS_IP}")
fi
quoted_dns_domain=$(yaml-quote "${DNS_DOMAIN}")
cat <<EOF
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
cgroupRoot: /
clusterDNS:
- ${quoted_dns_server_ip}
clusterDomain: ${quoted_dns_domain}
readOnlyPort: 10255
EOF
# Note: ENABLE_MANIFEST_URL is used by GKE.
# TODO(mtaufen): remove this since it's not used in kubernetes/kubernetes nor
# kubernetes/test-infra.
if [[ "${ENABLE_MANIFEST_URL:-}" == "true" ]]; then
declare quoted_manifest_url
quoted_manifest_url=$(yaml-quote "${MANIFEST_URL}")
cat <<EOF
staticPodURL: ${quoted_manifest_url}
EOF
yaml-map-string-stringarray 'staticPodURLHeader' "${MANIFEST_URL_HEADER}"
fi
if [[ -n "${EVICTION_HARD:-}" ]]; then
yaml-map-string-string 'evictionHard' "${EVICTION_HARD}" true '<'
fi
if [[ -n "${FEATURE_GATES:-}" ]]; then
yaml-map-string-string 'featureGates' "${FEATURE_GATES}" false '='
fi
}
# cat the Kubelet config yaml for masters
function print-master-kubelet-config {
cat <<EOF
enableDebuggingHandlers: false
hairpinMode: none
staticPodPath: /etc/kubernetes/manifests
authentication:
webhook:
enabled: false
anonymous:
enabled: true
authorization:
mode: AlwaysAllow
EOF
if [[ "${REGISTER_MASTER_KUBELET:-false}" == "false" ]]; then
# Note: Standalone mode is used by GKE
declare quoted_master_ip_range
quoted_master_ip_range=$(yaml-quote "${MASTER_IP_RANGE}")
cat <<EOF
podCidr: ${quoted_master_ip_range}
EOF
fi
}
# cat the Kubelet config yaml in common between linux nodes and windows nodes
function print-common-node-kubelet-config {
cat <<EOF
enableDebuggingHandlers: true
EOF