kubernetes/cluster/common.sh
Kubernetes Submit Queue b29d9cdbcf Merge pull request #39898 from ixdy/bazel-release-tars
Automatic merge from submit-queue

Build release tars using bazel

**What this PR does / why we need it**: builds equivalents of the various kubernetes release tarballs, solely using bazel.

For example, you can now do
```console
$ make bazel-release
$ hack/e2e.go -v -up -test -down
```

**Special notes for your reviewer**: this is currently dependent on 3b29803eb5, which I have yet to turn into a pull request, since I'm still trying to figure out if this is the best approach.

Basically, the issue comes up with the way we generate the various server docker image tarfiles and load them on nodes:
* we `md5sum` the binary being encapsulated (e.g. kube-proxy) and save that to `$binary.docker_tag` in the server tarball
* we then build the docker image and tag using that md5sum (e.g. `gcr.io/google_containers/kube-proxy:$MD5SUM`)
* we `docker save` this image, which embeds the full tag in the `$binary.tar` file.
* on cluster startup, we `docker load` these tarballs, which are loaded with the tag that we'd created at build time. the nodes then use the `$binary.docker_tag` file to find the right image.

With the current bazel `docker_build` rule, the tag isn't saved in the docker image tar, so the node is unable to find the image after `docker load`ing it.

My changes to the rule save the tag in the docker image tar, though I don't know if there are subtle issues with it. (Maybe we want to only tag when `--stamp` is given?)

Also, the docker images produced by bazel have the timestamp set to the unix epoch, which is not great for debugging. Might be another thing to change with a `--stamp`.

Long story short, we probably need to follow up with bazel folks on the best way to solve this problem.

**Release note**:

```release-note
NONE
```
2017-01-18 14:24:48 -08:00

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#!/bin/bash
# Copyright 2015 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.
# Common utilites for kube-up/kube-down
set -o errexit
set -o nounset
set -o pipefail
KUBE_ROOT=$(cd $(dirname "${BASH_SOURCE}")/.. && pwd)
DEFAULT_KUBECONFIG="${HOME}/.kube/config"
source "${KUBE_ROOT}/cluster/lib/util.sh"
source "${KUBE_ROOT}/cluster/lib/logging.sh"
# KUBE_RELEASE_VERSION_REGEX matches things like "v1.2.3" or "v1.2.3-alpha.4"
#
# NOTE This must match the version_regex in build/common.sh
# kube::release::parse_and_validate_release_version()
KUBE_RELEASE_VERSION_REGEX="^v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)(-(beta|alpha)\\.(0|[1-9][0-9]*))?$"
KUBE_RELEASE_VERSION_DASHED_REGEX="v(0|[1-9][0-9]*)-(0|[1-9][0-9]*)-(0|[1-9][0-9]*)(-(beta|alpha)-(0|[1-9][0-9]*))?"
# KUBE_CI_VERSION_REGEX matches things like "v1.2.3-alpha.4.56+abcdefg" This
#
# NOTE This must match the version_regex in build/common.sh
# kube::release::parse_and_validate_ci_version()
KUBE_CI_VERSION_REGEX="^v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)-(beta|alpha)\\.(0|[1-9][0-9]*)(\\.(0|[1-9][0-9]*)\\+[-0-9a-z]*)?$"
KUBE_CI_VERSION_DASHED_REGEX="^v(0|[1-9][0-9]*)-(0|[1-9][0-9]*)-(0|[1-9][0-9]*)-(beta|alpha)-(0|[1-9][0-9]*)(-(0|[1-9][0-9]*)\\+[-0-9a-z]*)?"
# Generate kubeconfig data for the created cluster.
# Assumed vars:
# KUBE_USER
# KUBE_PASSWORD
# KUBE_MASTER_IP
# KUBECONFIG
# CONTEXT
#
# If the apiserver supports bearer auth, also provide:
# KUBE_BEARER_TOKEN
#
# If the kubeconfig context being created should NOT be set as the current context
# SECONDARY_KUBECONFIG=true
#
# To explicitly name the context being created, use OVERRIDE_CONTEXT
#
# The following can be omitted for --insecure-skip-tls-verify
# KUBE_CERT
# KUBE_KEY
# CA_CERT
function create-kubeconfig() {
KUBECONFIG=${KUBECONFIG:-$DEFAULT_KUBECONFIG}
local kubectl="${KUBE_ROOT}/cluster/kubectl.sh"
SECONDARY_KUBECONFIG=${SECONDARY_KUBECONFIG:-}
OVERRIDE_CONTEXT=${OVERRIDE_CONTEXT:-}
if [[ "$OVERRIDE_CONTEXT" != "" ]];then
CONTEXT=$OVERRIDE_CONTEXT
fi
# KUBECONFIG determines the file we write to, but it may not exist yet
OLD_IFS=$IFS
IFS=':'
for cfg in ${KUBECONFIG} ; do
if [[ ! -e "${cfg}" ]]; then
mkdir -p "$(dirname "${cfg}")"
touch "${cfg}"
fi
done
IFS=$OLD_IFS
local cluster_args=(
"--server=${KUBE_SERVER:-https://${KUBE_MASTER_IP}}"
)
if [[ -z "${CA_CERT:-}" ]]; then
cluster_args+=("--insecure-skip-tls-verify=true")
else
cluster_args+=(
"--certificate-authority=${CA_CERT}"
"--embed-certs=true"
)
fi
local user_args=()
if [[ ! -z "${KUBE_BEARER_TOKEN:-}" ]]; then
user_args+=(
"--token=${KUBE_BEARER_TOKEN}"
)
elif [[ ! -z "${KUBE_USER:-}" && ! -z "${KUBE_PASSWORD:-}" ]]; then
user_args+=(
"--username=${KUBE_USER}"
"--password=${KUBE_PASSWORD}"
)
fi
if [[ ! -z "${KUBE_CERT:-}" && ! -z "${KUBE_KEY:-}" ]]; then
user_args+=(
"--client-certificate=${KUBE_CERT}"
"--client-key=${KUBE_KEY}"
"--embed-certs=true"
)
fi
KUBECONFIG="${KUBECONFIG}" "${kubectl}" config set-cluster "${CONTEXT}" "${cluster_args[@]}"
if [[ -n "${user_args[@]:-}" ]]; then
KUBECONFIG="${KUBECONFIG}" "${kubectl}" config set-credentials "${CONTEXT}" "${user_args[@]}"
fi
KUBECONFIG="${KUBECONFIG}" "${kubectl}" config set-context "${CONTEXT}" --cluster="${CONTEXT}" --user="${CONTEXT}"
if [[ "${SECONDARY_KUBECONFIG}" != "true" ]];then
KUBECONFIG="${KUBECONFIG}" "${kubectl}" config use-context "${CONTEXT}" --cluster="${CONTEXT}"
fi
# If we have a bearer token, also create a credential entry with basic auth
# so that it is easy to discover the basic auth password for your cluster
# to use in a web browser.
if [[ ! -z "${KUBE_BEARER_TOKEN:-}" && ! -z "${KUBE_USER:-}" && ! -z "${KUBE_PASSWORD:-}" ]]; then
KUBECONFIG="${KUBECONFIG}" "${kubectl}" config set-credentials "${CONTEXT}-basic-auth" "--username=${KUBE_USER}" "--password=${KUBE_PASSWORD}"
fi
echo "Wrote config for ${CONTEXT} to ${KUBECONFIG}"
}
# Clear kubeconfig data for a context
# Assumed vars:
# KUBECONFIG
# CONTEXT
#
# To explicitly name the context being removed, use OVERRIDE_CONTEXT
function clear-kubeconfig() {
export KUBECONFIG=${KUBECONFIG:-$DEFAULT_KUBECONFIG}
OVERRIDE_CONTEXT=${OVERRIDE_CONTEXT:-}
if [[ "$OVERRIDE_CONTEXT" != "" ]];then
CONTEXT=$OVERRIDE_CONTEXT
fi
local kubectl="${KUBE_ROOT}/cluster/kubectl.sh"
# Unset the current-context before we delete it, as otherwise kubectl errors.
local cc=$("${kubectl}" config view -o jsonpath='{.current-context}')
if [[ "${cc}" == "${CONTEXT}" ]]; then
"${kubectl}" config unset current-context
fi
"${kubectl}" config unset "clusters.${CONTEXT}"
"${kubectl}" config unset "users.${CONTEXT}"
"${kubectl}" config unset "users.${CONTEXT}-basic-auth"
"${kubectl}" config unset "contexts.${CONTEXT}"
echo "Cleared config for ${CONTEXT} from ${KUBECONFIG}"
}
# Creates a kubeconfig file with the credentials for only the current-context
# cluster. This is used by federation to create secrets in test setup.
function create-kubeconfig-for-federation() {
if [[ "${FEDERATION:-}" == "true" ]]; then
echo "creating kubeconfig for federation secret"
local kubectl="${KUBE_ROOT}/cluster/kubectl.sh"
local cc=$("${kubectl}" config view -o jsonpath='{.current-context}')
KUBECONFIG_DIR=$(dirname ${KUBECONFIG:-$DEFAULT_KUBECONFIG})
KUBECONFIG_PATH="${KUBECONFIG_DIR}/federation/kubernetes-apiserver/${cc}"
mkdir -p "${KUBECONFIG_PATH}"
"${kubectl}" config view --minify --flatten > "${KUBECONFIG_PATH}/kubeconfig"
fi
}
function tear_down_alive_resources() {
local kubectl="${KUBE_ROOT}/cluster/kubectl.sh"
"${kubectl}" delete deployments --all || true
"${kubectl}" delete rc --all || true
"${kubectl}" delete pods --all || true
"${kubectl}" delete svc --all || true
"${kubectl}" delete pvc --all || true
}
# Gets username, password for the current-context in kubeconfig, if they exist.
# Assumed vars:
# KUBECONFIG # if unset, defaults to global
# KUBE_CONTEXT # if unset, defaults to current-context
#
# Vars set:
# KUBE_USER
# KUBE_PASSWORD
#
# KUBE_USER,KUBE_PASSWORD will be empty if no current-context is set, or
# the current-context user does not exist or contain basicauth entries.
function get-kubeconfig-basicauth() {
export KUBECONFIG=${KUBECONFIG:-$DEFAULT_KUBECONFIG}
local cc=$("${KUBE_ROOT}/cluster/kubectl.sh" config view -o jsonpath="{.current-context}")
if [[ ! -z "${KUBE_CONTEXT:-}" ]]; then
cc="${KUBE_CONTEXT}"
fi
local user=$("${KUBE_ROOT}/cluster/kubectl.sh" config view -o jsonpath="{.contexts[?(@.name == \"${cc}\")].context.user}")
get-kubeconfig-user-basicauth "${user}"
if [[ -z "${KUBE_USER:-}" || -z "${KUBE_PASSWORD:-}" ]]; then
# kube-up stores username/password in a an additional kubeconfig section
# suffixed with "-basic-auth". Cloudproviders like GKE store in directly
# in the top level section along with the other credential information.
# TODO: Handle this uniformly, either get rid of "basic-auth" or
# consolidate its usage into a function across scripts in cluster/
get-kubeconfig-user-basicauth "${user}-basic-auth"
fi
}
# Sets KUBE_USER and KUBE_PASSWORD to the username and password specified in
# the kubeconfig section corresponding to $1.
#
# Args:
# $1 kubeconfig section to look for basic auth (eg: user or user-basic-auth).
# Assumed vars:
# KUBE_ROOT
# Vars set:
# KUBE_USER
# KUBE_PASSWORD
function get-kubeconfig-user-basicauth() {
KUBE_USER=$("${KUBE_ROOT}/cluster/kubectl.sh" config view -o jsonpath="{.users[?(@.name == \"$1\")].user.username}")
KUBE_PASSWORD=$("${KUBE_ROOT}/cluster/kubectl.sh" config view -o jsonpath="{.users[?(@.name == \"$1\")].user.password}")
}
# Generate basic auth user and password.
# Vars set:
# KUBE_USER
# KUBE_PASSWORD
function gen-kube-basicauth() {
KUBE_USER=admin
KUBE_PASSWORD=$(python -c 'import string,random; print("".join(random.SystemRandom().choice(string.ascii_letters + string.digits) for _ in range(16)))')
}
# Get the bearer token for the current-context in kubeconfig if one exists.
# Assumed vars:
# KUBECONFIG # if unset, defaults to global
# KUBE_CONTEXT # if unset, defaults to current-context
#
# Vars set:
# KUBE_BEARER_TOKEN
#
# KUBE_BEARER_TOKEN will be empty if no current-context is set, or the
# current-context user does not exist or contain a bearer token entry.
function get-kubeconfig-bearertoken() {
export KUBECONFIG=${KUBECONFIG:-$DEFAULT_KUBECONFIG}
local cc=$("${KUBE_ROOT}/cluster/kubectl.sh" config view -o jsonpath="{.current-context}")
if [[ ! -z "${KUBE_CONTEXT:-}" ]]; then
cc="${KUBE_CONTEXT}"
fi
local user=$("${KUBE_ROOT}/cluster/kubectl.sh" config view -o jsonpath="{.contexts[?(@.name == \"${cc}\")].context.user}")
KUBE_BEARER_TOKEN=$("${KUBE_ROOT}/cluster/kubectl.sh" config view -o jsonpath="{.users[?(@.name == \"${user}\")].user.token}")
}
# Generate bearer token.
#
# Vars set:
# KUBE_BEARER_TOKEN
function gen-kube-bearertoken() {
KUBE_BEARER_TOKEN=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
}
# Generate uid
# This function only works on systems with python. It generates a time based
# UID instead of a UUID because GCE has a name length limit.
#
# Vars set:
# KUBE_UID
function gen-uid {
KUBE_UID=$(python -c 'import uuid; print(uuid.uuid1().fields[0])')
}
function load-or-gen-kube-basicauth() {
if [[ ! -z "${KUBE_CONTEXT:-}" ]]; then
get-kubeconfig-basicauth
fi
if [[ -z "${KUBE_USER:-}" || -z "${KUBE_PASSWORD:-}" ]]; then
gen-kube-basicauth
fi
# Make sure they don't contain any funny characters.
if ! [[ "${KUBE_USER}" =~ ^[-._@a-zA-Z0-9]+$ ]]; then
echo "Bad KUBE_USER string."
exit 1
fi
if ! [[ "${KUBE_PASSWORD}" =~ ^[-._@#%/a-zA-Z0-9]+$ ]]; then
echo "Bad KUBE_PASSWORD string."
exit 1
fi
}
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
}
# Get the master IP for the current-context in kubeconfig if one exists.
#
# Assumed vars:
# KUBECONFIG # if unset, defaults to global
# KUBE_CONTEXT # if unset, defaults to current-context
#
# Vars set:
# KUBE_MASTER_URL
#
# KUBE_MASTER_URL will be empty if no current-context is set, or the
# current-context user does not exist or contain a server entry.
function detect-master-from-kubeconfig() {
export KUBECONFIG=${KUBECONFIG:-$DEFAULT_KUBECONFIG}
local cc=$("${KUBE_ROOT}/cluster/kubectl.sh" config view -o jsonpath="{.current-context}")
if [[ ! -z "${KUBE_CONTEXT:-}" ]]; then
cc="${KUBE_CONTEXT}"
fi
local cluster=$("${KUBE_ROOT}/cluster/kubectl.sh" config view -o jsonpath="{.contexts[?(@.name == \"${cc}\")].context.cluster}")
KUBE_MASTER_URL=$("${KUBE_ROOT}/cluster/kubectl.sh" config view -o jsonpath="{.clusters[?(@.name == \"${cluster}\")].cluster.server}")
}
# Sets KUBE_VERSION variable to the proper version number (e.g. "v1.0.6",
# "v1.2.0-alpha.1.881+376438b69c7612") or a version' publication of the form
# <path>/<version> (e.g. "release/stable",' "ci/latest-1").
#
# See the docs on getting builds for more information about version
# publication.
#
# Args:
# $1 version string from command line
# Vars set:
# KUBE_VERSION
function set_binary_version() {
if [[ "${1}" =~ "/" ]]; then
IFS='/' read -a path <<< "${1}"
if [[ "${path[0]}" == "release" ]]; then
KUBE_VERSION=$(gsutil cat "gs://kubernetes-release/${1}.txt")
else
KUBE_VERSION=$(gsutil cat "gs://kubernetes-release-dev/${1}.txt")
fi
else
KUBE_VERSION=${1}
fi
}
# Figure out which binary use on the server and assure it is available.
# If KUBE_VERSION is specified use binaries specified by it, otherwise
# use local dev binaries.
#
# Assumed vars:
# KUBE_VERSION
# KUBE_RELEASE_VERSION_REGEX
# KUBE_CI_VERSION_REGEX
# Vars set:
# KUBE_TAR_HASH
# SERVER_BINARY_TAR_URL
# SERVER_BINARY_TAR_HASH
# SALT_TAR_URL
# SALT_TAR_HASH
function tars_from_version() {
local sha1sum=""
if which sha1sum >/dev/null 2>&1; then
sha1sum="sha1sum"
else
sha1sum="shasum -a1"
fi
if [[ -z "${KUBE_VERSION-}" ]]; then
find-release-tars
upload-server-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"
SALT_TAR_URL="https://storage.googleapis.com/kubernetes-release/release/${KUBE_VERSION}/kubernetes-salt.tar.gz"
# TODO: Clean this up.
KUBE_MANIFESTS_TAR_URL="${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"
SALT_TAR_URL="https://storage.googleapis.com/kubernetes-release-dev/ci/${KUBE_VERSION}/kubernetes-salt.tar.gz"
# TODO: Clean this up.
KUBE_MANIFESTS_TAR_URL="${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 "${SERVER_BINARY_TAR_URL}.sha1"); then
echo "Failure trying to curl release .sha1"
fi
if ! SALT_TAR_HASH=$(curl -Ss --fail "${SALT_TAR_URL}.sha1"); then
echo "Failure trying to curl Salt tar .sha1"
fi
if ! curl -Ss --head "${SERVER_BINARY_TAR_URL}" >&/dev/null; then
echo "Can't find release at ${SERVER_BINARY_TAR_URL}" >&2
exit 1
fi
if ! curl -Ss --head "${SALT_TAR_URL}" >&/dev/null; then
echo "Can't find Salt tar at ${SALT_TAR_URL}" >&2
exit 1
fi
}
# Search for the specified tarball in the various known output locations,
# echoing the location if found.
#
# Assumed vars:
# KUBE_ROOT
#
# Args:
# $1 name of tarball to search for
function find-tar() {
local -r tarball=$1
locations=(
"${KUBE_ROOT}/server/${tarball}"
"${KUBE_ROOT}/_output/release-tars/${tarball}"
"${KUBE_ROOT}/bazel-bin/build/release-tars/${tarball}"
)
location=$( (ls -t "${locations[@]}" 2>/dev/null || true) | head -1 )
if [[ ! -f "${location}" ]]; then
echo "!!! Cannot find ${tarball}" >&2
exit 1
fi
echo "${location}"
}
# Verify and find the various tar files that we are going to use on the server.
#
# Assumed vars:
# KUBE_ROOT
# Vars set:
# SERVER_BINARY_TAR
# SALT_TAR
# KUBE_MANIFESTS_TAR
function find-release-tars() {
SERVER_BINARY_TAR=$(find-tar kubernetes-server-linux-amd64.tar.gz)
SALT_TAR=$(find-tar kubernetes-salt.tar.gz)
# This tarball is used by GCI, Ubuntu Trusty, and Container Linux.
KUBE_MANIFESTS_TAR=
if [[ "${MASTER_OS_DISTRIBUTION:-}" == "trusty" || "${MASTER_OS_DISTRIBUTION:-}" == "gci" || "${MASTER_OS_DISTRIBUTION:-}" == "container-linux" ]] || \
[[ "${NODE_OS_DISTRIBUTION:-}" == "trusty" || "${NODE_OS_DISTRIBUTION:-}" == "gci" || "${NODE_OS_DISTRIBUTION:-}" == "container-linux" ]] ; then
KUBE_MANIFESTS_TAR=$(find-tar kubernetes-manifests.tar.gz)
fi
}
# Discover the git version of the current build package
#
# Assumed vars:
# KUBE_ROOT
# Vars set:
# KUBE_GIT_VERSION
function find-release-version() {
KUBE_GIT_VERSION=""
if [[ -f "${KUBE_ROOT}/version" ]]; then
KUBE_GIT_VERSION="$(cat ${KUBE_ROOT}/version)"
fi
if [[ -f "${KUBE_ROOT}/_output/release-stage/full/kubernetes/version" ]]; then
KUBE_GIT_VERSION="$(cat ${KUBE_ROOT}/_output/release-stage/full/kubernetes/version)"
fi
if [[ -z "${KUBE_GIT_VERSION}" ]]; then
echo "!!! Cannot find release version"
exit 1
fi
}
function stage-images() {
find-release-version
find-release-tars
KUBE_IMAGE_TAG="$(echo """${KUBE_GIT_VERSION}""" | sed 's/+/-/g')"
local docker_wrapped_binaries=(
"kube-apiserver"
"kube-controller-manager"
"kube-scheduler"
"kube-proxy"
)
local docker_cmd=("docker")
if [[ "${KUBE_DOCKER_REGISTRY}" == "gcr.io/"* ]]; then
local docker_push_cmd=("gcloud" "docker")
else
local docker_push_cmd=("${docker_cmd[@]}")
fi
local temp_dir="$(mktemp -d -t 'kube-server-XXXX')"
tar xzfv "${SERVER_BINARY_TAR}" -C "${temp_dir}" &> /dev/null
for binary in "${docker_wrapped_binaries[@]}"; do
local docker_tag="$(cat ${temp_dir}/kubernetes/server/bin/${binary}.docker_tag)"
(
"${docker_cmd[@]}" load -i "${temp_dir}/kubernetes/server/bin/${binary}.tar"
docker rmi "${KUBE_DOCKER_REGISTRY}/${binary}:${KUBE_IMAGE_TAG}" || true
"${docker_cmd[@]}" tag "gcr.io/google_containers/${binary}:${docker_tag}" "${KUBE_DOCKER_REGISTRY}/${binary}:${KUBE_IMAGE_TAG}"
"${docker_push_cmd[@]}" push "${KUBE_DOCKER_REGISTRY}/${binary}:${KUBE_IMAGE_TAG}"
) &> "${temp_dir}/${binary}-push.log" &
done
kube::util::wait-for-jobs || {
kube::log::error "unable to push images. See ${temp_dir}/*.log for more info."
return 1
}
rm -rf "${temp_dir}"
return 0
}
# 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")'"
}
# Builds the RUNTIME_CONFIG var from other feature enable options (such as
# features in alpha)
function build-runtime-config() {
# There is nothing to do here for now. Just using this function as a placeholder.
:
}
# 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
build-kube-env true "${KUBE_TEMP}/master-kube-env.yaml"
build-kube-master-certs "${KUBE_TEMP}/kube-master-certs.yaml"
}
function write-node-env {
if [[ -z "${KUBERNETES_MASTER_NAME:-}" ]]; then
KUBERNETES_MASTER_NAME="${MASTER_NAME}"
fi
build-kube-env false "${KUBE_TEMP}/node-kube-env.yaml"
}
function build-kube-master-certs {
local file=$1
rm -f ${file}
cat >$file <<EOF
KUBEAPISERVER_CERT: $(yaml-quote ${KUBEAPISERVER_CERT_BASE64:-})
KUBEAPISERVER_KEY: $(yaml-quote ${KUBEAPISERVER_KEY_BASE64:-})
KUBELET_AUTH_CA_CERT: $(yaml-quote ${KUBELET_AUTH_CA_CERT_BASE64:-})
EOF
}
# $1: if 'true', we're building a master yaml, else a node
function build-kube-env {
local master=$1
local file=$2
local server_binary_tar_url=$SERVER_BINARY_TAR_URL
local salt_tar_url=$SALT_TAR_URL
local kube_manifests_tar_url="${KUBE_MANIFESTS_TAR_URL:-}"
if [[ "${master}" == "true" && "${MASTER_OS_DISTRIBUTION}" == "container-linux" ]] || \
[[ "${master}" == "false" && "${NODE_OS_DISTRIBUTION}" == "container-linux" ]] ; then
# TODO: Support fallback .tar.gz settings on Container Linux
server_binary_tar_url=$(split_csv "${SERVER_BINARY_TAR_URL}")
salt_tar_url=$(split_csv "${SALT_TAR_URL}")
kube_manifests_tar_url=$(split_csv "${KUBE_MANIFESTS_TAR_URL}")
fi
build-runtime-config
gen-uid
rm -f ${file}
cat >$file <<EOF
ENV_TIMESTAMP: $(yaml-quote $(date -u +%Y-%m-%dT%T%z))
INSTANCE_PREFIX: $(yaml-quote ${INSTANCE_PREFIX})
NODE_INSTANCE_PREFIX: $(yaml-quote ${NODE_INSTANCE_PREFIX})
NODE_TAGS: $(yaml-quote ${NODE_TAGS:-})
CLUSTER_IP_RANGE: $(yaml-quote ${CLUSTER_IP_RANGE:-10.244.0.0/16})
SERVER_BINARY_TAR_URL: $(yaml-quote ${server_binary_tar_url})
SERVER_BINARY_TAR_HASH: $(yaml-quote ${SERVER_BINARY_TAR_HASH})
SALT_TAR_URL: $(yaml-quote ${salt_tar_url})
SALT_TAR_HASH: $(yaml-quote ${SALT_TAR_HASH})
SERVICE_CLUSTER_IP_RANGE: $(yaml-quote ${SERVICE_CLUSTER_IP_RANGE})
KUBERNETES_MASTER_NAME: $(yaml-quote ${KUBERNETES_MASTER_NAME})
ALLOCATE_NODE_CIDRS: $(yaml-quote ${ALLOCATE_NODE_CIDRS:-false})
ENABLE_CLUSTER_MONITORING: $(yaml-quote ${ENABLE_CLUSTER_MONITORING:-none})
DOCKER_REGISTRY_MIRROR_URL: $(yaml-quote ${DOCKER_REGISTRY_MIRROR_URL:-})
ENABLE_L7_LOADBALANCING: $(yaml-quote ${ENABLE_L7_LOADBALANCING:-none})
ENABLE_CLUSTER_LOGGING: $(yaml-quote ${ENABLE_CLUSTER_LOGGING:-false})
ENABLE_CLUSTER_UI: $(yaml-quote ${ENABLE_CLUSTER_UI:-false})
ENABLE_NODE_PROBLEM_DETECTOR: $(yaml-quote ${ENABLE_NODE_PROBLEM_DETECTOR:-false})
ENABLE_NODE_LOGGING: $(yaml-quote ${ENABLE_NODE_LOGGING:-false})
ENABLE_RESCHEDULER: $(yaml-quote ${ENABLE_RESCHEDULER:-false})
LOGGING_DESTINATION: $(yaml-quote ${LOGGING_DESTINATION:-})
ELASTICSEARCH_LOGGING_REPLICAS: $(yaml-quote ${ELASTICSEARCH_LOGGING_REPLICAS:-})
ENABLE_CLUSTER_DNS: $(yaml-quote ${ENABLE_CLUSTER_DNS:-false})
ENABLE_CLUSTER_REGISTRY: $(yaml-quote ${ENABLE_CLUSTER_REGISTRY:-false})
CLUSTER_REGISTRY_DISK: $(yaml-quote ${CLUSTER_REGISTRY_DISK:-})
CLUSTER_REGISTRY_DISK_SIZE: $(yaml-quote ${CLUSTER_REGISTRY_DISK_SIZE:-})
DNS_SERVER_IP: $(yaml-quote ${DNS_SERVER_IP:-})
DNS_DOMAIN: $(yaml-quote ${DNS_DOMAIN:-})
ENABLE_DNS_HORIZONTAL_AUTOSCALER: $(yaml-quote ${ENABLE_DNS_HORIZONTAL_AUTOSCALER:-false})
KUBELET_TOKEN: $(yaml-quote ${KUBELET_TOKEN:-})
KUBE_PROXY_TOKEN: $(yaml-quote ${KUBE_PROXY_TOKEN:-})
ADMISSION_CONTROL: $(yaml-quote ${ADMISSION_CONTROL:-})
MASTER_IP_RANGE: $(yaml-quote ${MASTER_IP_RANGE})
RUNTIME_CONFIG: $(yaml-quote ${RUNTIME_CONFIG})
CA_CERT: $(yaml-quote ${CA_CERT_BASE64:-})
KUBELET_CERT: $(yaml-quote ${KUBELET_CERT_BASE64:-})
KUBELET_KEY: $(yaml-quote ${KUBELET_KEY_BASE64:-})
NETWORK_PROVIDER: $(yaml-quote ${NETWORK_PROVIDER:-})
NETWORK_POLICY_PROVIDER: $(yaml-quote ${NETWORK_POLICY_PROVIDER:-})
PREPULL_E2E_IMAGES: $(yaml-quote ${PREPULL_E2E_IMAGES:-})
HAIRPIN_MODE: $(yaml-quote ${HAIRPIN_MODE:-})
SOFTLOCKUP_PANIC: $(yaml-quote ${SOFTLOCKUP_PANIC:-})
OPENCONTRAIL_TAG: $(yaml-quote ${OPENCONTRAIL_TAG:-})
OPENCONTRAIL_KUBERNETES_TAG: $(yaml-quote ${OPENCONTRAIL_KUBERNETES_TAG:-})
OPENCONTRAIL_PUBLIC_SUBNET: $(yaml-quote ${OPENCONTRAIL_PUBLIC_SUBNET:-})
E2E_STORAGE_TEST_ENVIRONMENT: $(yaml-quote ${E2E_STORAGE_TEST_ENVIRONMENT:-})
KUBE_IMAGE_TAG: $(yaml-quote ${KUBE_IMAGE_TAG:-})
KUBE_DOCKER_REGISTRY: $(yaml-quote ${KUBE_DOCKER_REGISTRY:-})
KUBE_ADDON_REGISTRY: $(yaml-quote ${KUBE_ADDON_REGISTRY:-})
MULTIZONE: $(yaml-quote ${MULTIZONE:-})
NON_MASQUERADE_CIDR: $(yaml-quote ${NON_MASQUERADE_CIDR:-})
KUBE_UID: $(yaml-quote ${KUBE_UID:-})
ENABLE_DEFAULT_STORAGE_CLASS: $(yaml-quote ${ENABLE_DEFAULT_STORAGE_CLASS:-})
EOF
if [ -n "${KUBELET_PORT:-}" ]; then
cat >>$file <<EOF
KUBELET_PORT: $(yaml-quote ${KUBELET_PORT})
EOF
fi
if [ -n "${KUBE_APISERVER_REQUEST_TIMEOUT:-}" ]; then
cat >>$file <<EOF
KUBE_APISERVER_REQUEST_TIMEOUT: $(yaml-quote ${KUBE_APISERVER_REQUEST_TIMEOUT})
EOF
fi
if [ -n "${TERMINATED_POD_GC_THRESHOLD:-}" ]; then
cat >>$file <<EOF
TERMINATED_POD_GC_THRESHOLD: $(yaml-quote ${TERMINATED_POD_GC_THRESHOLD})
EOF
fi
if [[ "${master}" == "true" && ("${MASTER_OS_DISTRIBUTION}" == "trusty" || "${MASTER_OS_DISTRIBUTION}" == "gci" || "${MASTER_OS_DISTRIBUTION}" == "container-linux") ]] || \
[[ "${master}" == "false" && ("${NODE_OS_DISTRIBUTION}" == "trusty" || "${NODE_OS_DISTRIBUTION}" == "gci" || "${NODE_OS_DISTRIBUTION}" == "container-linux") ]] ; then
cat >>$file <<EOF
KUBE_MANIFESTS_TAR_URL: $(yaml-quote ${kube_manifests_tar_url})
KUBE_MANIFESTS_TAR_HASH: $(yaml-quote ${KUBE_MANIFESTS_TAR_HASH})
EOF
fi
if [ -n "${TEST_CLUSTER:-}" ]; then
cat >>$file <<EOF
TEST_CLUSTER: $(yaml-quote ${TEST_CLUSTER})
EOF
fi
if [ -n "${KUBELET_TEST_ARGS:-}" ]; then
cat >>$file <<EOF
KUBELET_TEST_ARGS: $(yaml-quote ${KUBELET_TEST_ARGS})
EOF
fi
if [ -n "${KUBELET_TEST_LOG_LEVEL:-}" ]; then
cat >>$file <<EOF
KUBELET_TEST_LOG_LEVEL: $(yaml-quote ${KUBELET_TEST_LOG_LEVEL})
EOF
fi
if [ -n "${DOCKER_TEST_LOG_LEVEL:-}" ]; then
cat >>$file <<EOF
DOCKER_TEST_LOG_LEVEL: $(yaml-quote ${DOCKER_TEST_LOG_LEVEL})
EOF
fi
if [ -n "${ENABLE_CUSTOM_METRICS:-}" ]; then
cat >>$file <<EOF
ENABLE_CUSTOM_METRICS: $(yaml-quote ${ENABLE_CUSTOM_METRICS})
EOF
fi
if [ -n "${FEATURE_GATES:-}" ]; then
cat >>$file <<EOF
FEATURE_GATES: $(yaml-quote ${FEATURE_GATES})
EOF
fi
if [[ "${master}" == "true" ]]; then
# Master-only env vars.
cat >>$file <<EOF
KUBERNETES_MASTER: $(yaml-quote "true")
KUBE_USER: $(yaml-quote ${KUBE_USER})
KUBE_PASSWORD: $(yaml-quote ${KUBE_PASSWORD})
KUBE_BEARER_TOKEN: $(yaml-quote ${KUBE_BEARER_TOKEN})
MASTER_CERT: $(yaml-quote ${MASTER_CERT_BASE64:-})
MASTER_KEY: $(yaml-quote ${MASTER_KEY_BASE64:-})
KUBECFG_CERT: $(yaml-quote ${KUBECFG_CERT_BASE64:-})
KUBECFG_KEY: $(yaml-quote ${KUBECFG_KEY_BASE64:-})
KUBELET_APISERVER: $(yaml-quote ${KUBELET_APISERVER:-})
ENABLE_MANIFEST_URL: $(yaml-quote ${ENABLE_MANIFEST_URL:-false})
MANIFEST_URL: $(yaml-quote ${MANIFEST_URL:-})
MANIFEST_URL_HEADER: $(yaml-quote ${MANIFEST_URL_HEADER:-})
NUM_NODES: $(yaml-quote ${NUM_NODES})
STORAGE_BACKEND: $(yaml-quote ${STORAGE_BACKEND:-etcd3})
ENABLE_GARBAGE_COLLECTOR: $(yaml-quote ${ENABLE_GARBAGE_COLLECTOR:-})
MASTER_ADVERTISE_ADDRESS: $(yaml-quote ${MASTER_ADVERTISE_ADDRESS:-})
ETCD_CA_KEY: $(yaml-quote ${ETCD_CA_KEY_BASE64:-})
ETCD_CA_CERT: $(yaml-quote ${ETCD_CA_CERT_BASE64:-})
ETCD_PEER_KEY: $(yaml-quote ${ETCD_PEER_KEY_BASE64:-})
ETCD_PEER_CERT: $(yaml-quote ${ETCD_PEER_CERT_BASE64:-})
EOF
# ETCD_IMAGE (if set) allows to use a custom etcd image.
if [ -n "${ETCD_IMAGE:-}" ]; then
cat >>$file <<EOF
ETCD_IMAGE: $(yaml-quote ${ETCD_IMAGE})
EOF
fi
# ETCD_VERSION (if set) allows you to use custom version of etcd.
# The main purpose of using it may be rollback of etcd v3 API,
# where we need 3.0.* image, but are rolling back to 2.3.7.
if [ -n "${ETCD_VERSION:-}" ]; then
cat >>$file <<EOF
ETCD_VERSION: $(yaml-quote ${ETCD_VERSION})
EOF
fi
if [ -n "${APISERVER_TEST_ARGS:-}" ]; then
cat >>$file <<EOF
APISERVER_TEST_ARGS: $(yaml-quote ${APISERVER_TEST_ARGS})
EOF
fi
if [ -n "${APISERVER_TEST_LOG_LEVEL:-}" ]; then
cat >>$file <<EOF
APISERVER_TEST_LOG_LEVEL: $(yaml-quote ${APISERVER_TEST_LOG_LEVEL})
EOF
fi
if [ -n "${CONTROLLER_MANAGER_TEST_ARGS:-}" ]; then
cat >>$file <<EOF
CONTROLLER_MANAGER_TEST_ARGS: $(yaml-quote ${CONTROLLER_MANAGER_TEST_ARGS})
EOF
fi
if [ -n "${CONTROLLER_MANAGER_TEST_LOG_LEVEL:-}" ]; then
cat >>$file <<EOF
CONTROLLER_MANAGER_TEST_LOG_LEVEL: $(yaml-quote ${CONTROLLER_MANAGER_TEST_LOG_LEVEL})
EOF
fi
if [ -n "${SCHEDULER_TEST_ARGS:-}" ]; then
cat >>$file <<EOF
SCHEDULER_TEST_ARGS: $(yaml-quote ${SCHEDULER_TEST_ARGS})
EOF
fi
if [ -n "${SCHEDULER_TEST_LOG_LEVEL:-}" ]; then
cat >>$file <<EOF
SCHEDULER_TEST_LOG_LEVEL: $(yaml-quote ${SCHEDULER_TEST_LOG_LEVEL})
EOF
fi
if [ -n "${INITIAL_ETCD_CLUSTER:-}" ]; then
cat >>$file <<EOF
INITIAL_ETCD_CLUSTER: $(yaml-quote ${INITIAL_ETCD_CLUSTER})
EOF
fi
if [ -n "${ETCD_QUORUM_READ:-}" ]; then
cat >>$file <<EOF
ETCD_QUORUM_READ: $(yaml-quote ${ETCD_QUORUM_READ})
EOF
fi
else
# Node-only env vars.
cat >>$file <<EOF
KUBERNETES_MASTER: $(yaml-quote "false")
ZONE: $(yaml-quote ${ZONE})
EXTRA_DOCKER_OPTS: $(yaml-quote ${EXTRA_DOCKER_OPTS:-})
KUBELET_AUTH_CA_CERT: $(yaml-quote ${KUBELET_AUTH_CA_CERT_BASE64:-})
EOF
if [ -n "${KUBEPROXY_TEST_ARGS:-}" ]; then
cat >>$file <<EOF
KUBEPROXY_TEST_ARGS: $(yaml-quote ${KUBEPROXY_TEST_ARGS})
EOF
fi
if [ -n "${KUBEPROXY_TEST_LOG_LEVEL:-}" ]; then
cat >>$file <<EOF
KUBEPROXY_TEST_LOG_LEVEL: $(yaml-quote ${KUBEPROXY_TEST_LOG_LEVEL})
EOF
fi
fi
if [ -n "${NODE_LABELS:-}" ]; then
cat >>$file <<EOF
NODE_LABELS: $(yaml-quote ${NODE_LABELS})
EOF
fi
if [ -n "${EVICTION_HARD:-}" ]; then
cat >>$file <<EOF
EVICTION_HARD: $(yaml-quote ${EVICTION_HARD})
EOF
fi
if [[ "${master}" == "true" && "${MASTER_OS_DISTRIBUTION}" == "container-linux" ]] || \
[[ "${master}" == "false" && "${NODE_OS_DISTRIBUTION}" == "container-linux" ]]; then
# Container-Linux-only env vars. TODO(yifan): Make them available on other distros.
cat >>$file <<EOF
KUBERNETES_CONTAINER_RUNTIME: $(yaml-quote ${CONTAINER_RUNTIME:-rkt})
RKT_VERSION: $(yaml-quote ${RKT_VERSION:-})
RKT_PATH: $(yaml-quote ${RKT_PATH:-})
RKT_STAGE1_IMAGE: $(yaml-quote ${RKT_STAGE1_IMAGE:-})
EOF
fi
if [[ "${ENABLE_CLUSTER_AUTOSCALER}" == "true" ]]; then
cat >>$file <<EOF
ENABLE_CLUSTER_AUTOSCALER: $(yaml-quote ${ENABLE_CLUSTER_AUTOSCALER})
AUTOSCALER_MIG_CONFIG: $(yaml-quote ${AUTOSCALER_MIG_CONFIG})
EOF
fi
# Federation specific environment variables.
if [[ -n "${FEDERATION:-}" ]]; then
cat >>$file <<EOF
FEDERATION: $(yaml-quote ${FEDERATION})
EOF
fi
if [ -n "${FEDERATIONS_DOMAIN_MAP:-}" ]; then
cat >>$file <<EOF
FEDERATIONS_DOMAIN_MAP: $(yaml-quote ${FEDERATIONS_DOMAIN_MAP})
EOF
fi
if [ -n "${FEDERATION_NAME:-}" ]; then
cat >>$file <<EOF
FEDERATION_NAME: $(yaml-quote ${FEDERATION_NAME})
EOF
fi
if [ -n "${DNS_ZONE_NAME:-}" ]; then
cat >>$file <<EOF
DNS_ZONE_NAME: $(yaml-quote ${DNS_ZONE_NAME})
EOF
fi
if [ -n "${SCHEDULING_ALGORITHM_PROVIDER:-}" ]; then
cat >>$file <<EOF
SCHEDULING_ALGORITHM_PROVIDER: $(yaml-quote ${SCHEDULING_ALGORITHM_PROVIDER})
EOF
fi
}
function sha1sum-file() {
if which sha1sum >/dev/null 2>&1; then
sha1sum "$1" | awk '{ print $1 }'
else
shasum -a1 "$1" | awk '{ print $1 }'
fi
}
# Downloads cfssl into ${KUBE_TEMP}/cfssl directory
#
# Assumed vars:
# KUBE_TEMP: temporary directory
#
function download-cfssl {
mkdir -p "${KUBE_TEMP}/cfssl"
pushd "${KUBE_TEMP}/cfssl"
kernel=$(uname -s)
case "${kernel}" in
Linux)
curl -s -L -o cfssl https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
curl -s -L -o cfssljson https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
;;
Darwin)
curl -s -L -o cfssl https://pkg.cfssl.org/R1.2/cfssl_darwin-amd64
curl -s -L -o cfssljson https://pkg.cfssl.org/R1.2/cfssljson_darwin-amd64
;;
*)
echo "Unknown, unsupported platform: ${kernel}." >&2
echo "Supported platforms: Linux, Darwin." >&2
exit 2
esac
chmod +x cfssl
chmod +x cfssljson
popd
}
# Create certificate pairs for the cluster.
# $1: The public IP for the master.
#
# These are used for static cert distribution (e.g. static clustering) at
# cluster creation time. This will be obsoleted once we implement dynamic
# clustering.
#
# The following certificate pairs are created:
#
# - ca (the cluster's certificate authority)
# - server
# - kubelet
# - kubecfg (for kubectl)
#
# TODO(roberthbailey): Replace easyrsa with a simple Go program to generate
# the certs that we need.
#
# Assumed vars
# KUBE_TEMP
# MASTER_NAME
#
# Vars set:
# CERT_DIR
# CA_CERT_BASE64
# MASTER_CERT_BASE64
# MASTER_KEY_BASE64
# KUBELET_CERT_BASE64
# KUBELET_KEY_BASE64
# KUBECFG_CERT_BASE64
# KUBECFG_KEY_BASE64
function create-certs {
local -r primary_cn="${1}"
# Determine extra certificate names for master
local octets=($(echo "${SERVICE_CLUSTER_IP_RANGE}" | sed -e 's|/.*||' -e 's/\./ /g'))
((octets[3]+=1))
local -r service_ip=$(echo "${octets[*]}" | sed 's/ /./g')
local sans=""
for extra in $@; do
if [[ -n "${extra}" ]]; then
sans="${sans}IP:${extra},"
fi
done
sans="${sans}IP:${service_ip},DNS:kubernetes,DNS:kubernetes.default,DNS:kubernetes.default.svc,DNS:kubernetes.default.svc.${DNS_DOMAIN},DNS:${MASTER_NAME}"
echo "Generating certs for alternate-names: ${sans}"
PRIMARY_CN="${primary_cn}" SANS="${sans}" generate-certs
CERT_DIR="${KUBE_TEMP}/easy-rsa-master/easyrsa3"
# By default, linux wraps base64 output every 76 cols, so we use 'tr -d' to remove whitespaces.
# Note 'base64 -w0' doesn't work on Mac OS X, which has different flags.
CA_CERT_BASE64=$(cat "${CERT_DIR}/pki/ca.crt" | base64 | tr -d '\r\n')
MASTER_CERT_BASE64=$(cat "${CERT_DIR}/pki/issued/${MASTER_NAME}.crt" | base64 | tr -d '\r\n')
MASTER_KEY_BASE64=$(cat "${CERT_DIR}/pki/private/${MASTER_NAME}.key" | base64 | tr -d '\r\n')
KUBELET_CERT_BASE64=$(cat "${CERT_DIR}/pki/issued/kubelet.crt" | base64 | tr -d '\r\n')
KUBELET_KEY_BASE64=$(cat "${CERT_DIR}/pki/private/kubelet.key" | base64 | tr -d '\r\n')
KUBECFG_CERT_BASE64=$(cat "${CERT_DIR}/pki/issued/kubecfg.crt" | base64 | tr -d '\r\n')
KUBECFG_KEY_BASE64=$(cat "${CERT_DIR}/pki/private/kubecfg.key" | base64 | tr -d '\r\n')
KUBELET_AUTH_CA_CERT_BASE64=$(cat "${KUBE_TEMP}/easy-rsa-master/kubelet/pki/ca.crt" | base64 | tr -d '\r\n')
KUBEAPISERVER_CERT_BASE64=$(cat "${KUBE_TEMP}/easy-rsa-master/kubelet/pki/issued/kube-apiserver.crt" | base64 | tr -d '\r\n')
KUBEAPISERVER_KEY_BASE64=$(cat "${KUBE_TEMP}/easy-rsa-master/kubelet/pki/private/kube-apiserver.key" | base64 | tr -d '\r\n')
}
# Runs the easy RSA commands to generate certificate files.
# The generated files are at ${KUBE_TEMP}/easy-rsa-master/easyrsa3
#
# Assumed vars
# KUBE_TEMP
# MASTER_NAME
# PRIMARY_CN: Primary canonical name
# SANS: Subject alternate names
#
#
function generate-certs {
local -r cert_create_debug_output=$(mktemp "${KUBE_TEMP}/cert_create_debug_output.XXX")
# Note: This was heavily cribbed from make-ca-cert.sh
(set -x
cd "${KUBE_TEMP}"
curl -L -O --connect-timeout 20 --retry 6 --retry-delay 2 https://storage.googleapis.com/kubernetes-release/easy-rsa/easy-rsa.tar.gz
tar xzf easy-rsa.tar.gz
mkdir easy-rsa-master/kubelet
cp -r easy-rsa-master/easyrsa3/* easy-rsa-master/kubelet
cd easy-rsa-master/easyrsa3
./easyrsa init-pki
# this puts the cert into pki/ca.crt and the key into pki/private/ca.key
./easyrsa --batch "--req-cn=${PRIMARY_CN}@$(date +%s)" build-ca nopass
./easyrsa --subject-alt-name="${SANS}" build-server-full "${MASTER_NAME}" nopass
download-cfssl
# make the config for the signer
echo '{"signing":{"default":{"expiry":"43800h","usages":["signing","key encipherment","client auth"]}}}' > "ca-config.json"
# create the kubelet client cert with the correct groups
echo '{"CN":"kubelet","names":[{"O":"system:nodes"}],"hosts":[""],"key":{"algo":"rsa","size":2048}}' | "${KUBE_TEMP}/cfssl/cfssl" gencert -ca=pki/ca.crt -ca-key=pki/private/ca.key -config=ca-config.json - | "${KUBE_TEMP}/cfssl/cfssljson" -bare kubelet
mv "kubelet-key.pem" "pki/private/kubelet.key"
mv "kubelet.pem" "pki/issued/kubelet.crt"
rm -f "kubelet.csr"
./easyrsa build-client-full kubecfg nopass
cd ../kubelet
./easyrsa init-pki
./easyrsa --batch "--req-cn=kubelet@$(date +%s)" build-ca nopass
./easyrsa build-client-full kube-apiserver nopass) &>${cert_create_debug_output} || {
# If there was an error in the subshell, just die.
# TODO(roberthbailey): add better error handling here
cat "${cert_create_debug_output}" >&2
echo "=== Failed to generate certificates: Aborting ===" >&2
exit 2
}
}
#
# Using provided master env, extracts value from provided key.
#
# Args:
# $1 master env (kube-env of master; result of calling get-master-env)
# $2 env key to use
function get-env-val() {
local match=`(echo "${1}" | grep ${2}) || echo ""`
if [[ -z ${match} ]]; then
echo ""
fi
echo ${match} | cut -d : -f 2 | cut -d \' -f 2
}
# Load the master env by calling get-master-env, and extract important values
function parse-master-env() {
# Get required master env vars
local master_env=$(get-master-env)
KUBELET_TOKEN=$(get-env-val "${master_env}" "KUBELET_TOKEN")
KUBE_PROXY_TOKEN=$(get-env-val "${master_env}" "KUBE_PROXY_TOKEN")
CA_CERT_BASE64=$(get-env-val "${master_env}" "CA_CERT")
EXTRA_DOCKER_OPTS=$(get-env-val "${master_env}" "EXTRA_DOCKER_OPTS")
KUBELET_CERT_BASE64=$(get-env-val "${master_env}" "KUBELET_CERT")
KUBELET_KEY_BASE64=$(get-env-val "${master_env}" "KUBELET_KEY")
}
# Update or verify required gcloud components are installed
# at minimum required version.
# Assumed vars
# KUBE_PROMPT_FOR_UPDATE
function update-or-verify-gcloud() {
local sudo_prefix=""
if [ ! -w $(dirname `which gcloud`) ]; then
sudo_prefix="sudo"
fi
# update and install components as needed
if [[ "${KUBE_PROMPT_FOR_UPDATE}" == "y" ]]; then
${sudo_prefix} gcloud ${gcloud_prompt:-} components install alpha
${sudo_prefix} gcloud ${gcloud_prompt:-} components install beta
${sudo_prefix} gcloud ${gcloud_prompt:-} components update
else
local version=$(${sudo_prefix} gcloud version --format=json)
python -c'
import json,sys
from distutils import version
minVersion = version.LooseVersion("1.3.0")
required = [ "alpha", "beta", "core" ]
data = json.loads(sys.argv[1])
rel = data.get("Google Cloud SDK")
if rel != "HEAD" and version.LooseVersion(rel) < minVersion:
print("gcloud version out of date ( < %s )" % minVersion)
exit(1)
missing = []
for c in required:
if not data.get(c):
missing += [c]
if missing:
for c in missing:
print ("missing required gcloud component \"{0}\"".format(c))
exit(1)
' """${version}"""
fi
}
# Check whether required client and server binaries exist, prompting to download
# if missing.
# If KUBERNETES_SKIP_CONFIRM is set to y, we'll automatically download binaries
# without prompting.
function verify-kube-binaries() {
local missing_binaries=false
if ! "${KUBE_ROOT}/cluster/kubectl.sh" version --client >&/dev/null; then
echo "!!! kubectl appears to be broken or missing"
missing_binaries=true
fi
if ! $(find-release-tars); then
missing_binaries=true
fi
if ! "${missing_binaries}"; then
return
fi
get_binaries_script="${KUBE_ROOT}/cluster/get-kube-binaries.sh"
local resp="y"
if [[ ! "${KUBERNETES_SKIP_CONFIRM:-n}" =~ ^[yY]$ ]]; then
echo "Required binaries appear to be missing. Do you wish to download them? [Y/n]"
read resp
fi
if [[ "${resp}" =~ ^[nN]$ ]]; then
echo "You must download binaries to continue. You can use "
echo " ${get_binaries_script}"
echo "to do this for your automatically."
exit 1
fi
"${get_binaries_script}"
}