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607 lines
19 KiB
Bash
Executable File
607 lines
19 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2014 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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kube::util::sortable_date() {
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date "+%Y%m%d-%H%M%S"
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}
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kube::util::wait_for_url() {
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local url=$1
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local prefix=${2:-}
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local wait=${3:-1}
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local times=${4:-30}
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which curl >/dev/null || {
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kube::log::usage "curl must be installed"
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exit 1
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}
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local i
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for i in $(seq 1 $times); do
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local out
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if out=$(curl --max-time 1 -gkfs $url 2>/dev/null); then
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kube::log::status "On try ${i}, ${prefix}: ${out}"
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return 0
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fi
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sleep ${wait}
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done
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kube::log::error "Timed out waiting for ${prefix} to answer at ${url}; tried ${times} waiting ${wait} between each"
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return 1
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}
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# returns a random port
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kube::util::get_random_port() {
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awk -v min=1024 -v max=65535 'BEGIN{srand(); print int(min+rand()*(max-min+1))}'
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}
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# use netcat to check if the host($1):port($2) is free (return 0 means free, 1 means used)
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kube::util::test_host_port_free() {
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local host=$1
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local port=$2
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local success=0
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local fail=1
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which nc >/dev/null || {
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kube::log::usage "netcat isn't installed, can't verify if ${host}:${port} is free, skipping the check..."
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return ${success}
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}
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if [ ! $(nc -vz "${host}" "${port}") ]; then
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kube::log::status "${host}:${port} is free, proceeding..."
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return ${success}
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else
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kube::log::status "${host}:${port} is already used"
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return ${fail}
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fi
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}
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# Example: kube::util::trap_add 'echo "in trap DEBUG"' DEBUG
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# See: http://stackoverflow.com/questions/3338030/multiple-bash-traps-for-the-same-signal
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kube::util::trap_add() {
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local trap_add_cmd
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trap_add_cmd=$1
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shift
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for trap_add_name in "$@"; do
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local existing_cmd
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local new_cmd
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# Grab the currently defined trap commands for this trap
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existing_cmd=`trap -p "${trap_add_name}" | awk -F"'" '{print $2}'`
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if [[ -z "${existing_cmd}" ]]; then
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new_cmd="${trap_add_cmd}"
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else
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new_cmd="${existing_cmd};${trap_add_cmd}"
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fi
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# Assign the test
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trap "${new_cmd}" "${trap_add_name}"
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done
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}
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# Opposite of kube::util::ensure-temp-dir()
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kube::util::cleanup-temp-dir() {
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rm -rf "${KUBE_TEMP}"
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}
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# Create a temp dir that'll be deleted at the end of this bash session.
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#
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# Vars set:
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# KUBE_TEMP
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kube::util::ensure-temp-dir() {
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if [[ -z ${KUBE_TEMP-} ]]; then
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KUBE_TEMP=$(mktemp -d 2>/dev/null || mktemp -d -t kubernetes.XXXXXX)
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kube::util::trap_add kube::util::cleanup-temp-dir EXIT
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fi
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}
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# This figures out the host platform without relying on golang. We need this as
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# we don't want a golang install to be a prerequisite to building yet we need
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# this info to figure out where the final binaries are placed.
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kube::util::host_platform() {
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local host_os
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local host_arch
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case "$(uname -s)" in
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Darwin)
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host_os=darwin
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;;
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Linux)
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host_os=linux
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;;
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*)
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kube::log::error "Unsupported host OS. Must be Linux or Mac OS X."
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exit 1
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;;
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esac
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case "$(uname -m)" in
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x86_64*)
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host_arch=amd64
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;;
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i?86_64*)
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host_arch=amd64
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;;
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amd64*)
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host_arch=amd64
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;;
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aarch64*)
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host_arch=arm64
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;;
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arm64*)
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host_arch=arm64
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;;
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arm*)
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host_arch=arm
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;;
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i?86*)
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host_arch=x86
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;;
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s390x*)
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host_arch=s390x
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;;
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ppc64le*)
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host_arch=ppc64le
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;;
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*)
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kube::log::error "Unsupported host arch. Must be x86_64, 386, arm, arm64, s390x or ppc64le."
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exit 1
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;;
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esac
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echo "${host_os}/${host_arch}"
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}
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kube::util::find-binary-for-platform() {
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local -r lookfor="$1"
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local -r platform="$2"
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local -r locations=(
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"${KUBE_ROOT}/_output/bin/${lookfor}"
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"${KUBE_ROOT}/_output/dockerized/bin/${platform}/${lookfor}"
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"${KUBE_ROOT}/_output/local/bin/${platform}/${lookfor}"
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"${KUBE_ROOT}/platforms/${platform}/${lookfor}"
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)
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local -r bin=$( (ls -t "${locations[@]}" 2>/dev/null || true) | head -1 )
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echo -n "${bin}"
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}
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kube::util::find-binary() {
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kube::util::find-binary-for-platform "$1" "$(kube::util::host_platform)"
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}
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# Run all known doc generators (today gendocs and genman for kubectl)
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# $1 is the directory to put those generated documents
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kube::util::gen-docs() {
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local dest="$1"
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# Find binary
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gendocs=$(kube::util::find-binary "gendocs")
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genkubedocs=$(kube::util::find-binary "genkubedocs")
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genman=$(kube::util::find-binary "genman")
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genyaml=$(kube::util::find-binary "genyaml")
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genfeddocs=$(kube::util::find-binary "genfeddocs")
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mkdir -p "${dest}/docs/user-guide/kubectl/"
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"${gendocs}" "${dest}/docs/user-guide/kubectl/"
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mkdir -p "${dest}/docs/admin/"
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"${genkubedocs}" "${dest}/docs/admin/" "kube-apiserver"
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"${genkubedocs}" "${dest}/docs/admin/" "kube-controller-manager"
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"${genkubedocs}" "${dest}/docs/admin/" "kube-proxy"
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"${genkubedocs}" "${dest}/docs/admin/" "kube-scheduler"
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"${genkubedocs}" "${dest}/docs/admin/" "kubelet"
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# We don't really need federation-apiserver and federation-controller-manager
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# binaries to generate the docs. We just pass their names to decide which docs
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# to generate. The actual binary for running federation is hyperkube.
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"${genfeddocs}" "${dest}/docs/admin/" "federation-apiserver"
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"${genfeddocs}" "${dest}/docs/admin/" "federation-controller-manager"
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mkdir -p "${dest}/docs/man/man1/"
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"${genman}" "${dest}/docs/man/man1/" "kube-apiserver"
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"${genman}" "${dest}/docs/man/man1/" "kube-controller-manager"
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"${genman}" "${dest}/docs/man/man1/" "kube-proxy"
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"${genman}" "${dest}/docs/man/man1/" "kube-scheduler"
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"${genman}" "${dest}/docs/man/man1/" "kubelet"
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"${genman}" "${dest}/docs/man/man1/" "kubectl"
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mkdir -p "${dest}/docs/yaml/kubectl/"
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"${genyaml}" "${dest}/docs/yaml/kubectl/"
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# create the list of generated files
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pushd "${dest}" > /dev/null
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touch .generated_docs
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find . -type f | cut -sd / -f 2- | LC_ALL=C sort > .generated_docs
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popd > /dev/null
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}
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# Puts a placeholder for every generated doc. This makes the link checker work.
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kube::util::set-placeholder-gen-docs() {
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local list_file="${KUBE_ROOT}/.generated_docs"
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if [ -e ${list_file} ]; then
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# remove all of the old docs; we don't want to check them in.
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while read file; do
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if [[ "${list_file}" != "${KUBE_ROOT}/${file}" ]]; then
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cp "${KUBE_ROOT}/hack/autogenerated_placeholder.txt" "${KUBE_ROOT}/${file}"
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fi
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done <"${list_file}"
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# The .generated_docs file lists itself, so we don't need to explicitly
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# delete it.
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fi
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}
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# Removes previously generated docs-- we don't want to check them in. $KUBE_ROOT
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# must be set.
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kube::util::remove-gen-docs() {
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if [ -e "${KUBE_ROOT}/.generated_docs" ]; then
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# remove all of the old docs; we don't want to check them in.
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while read file; do
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rm "${KUBE_ROOT}/${file}" 2>/dev/null || true
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done <"${KUBE_ROOT}/.generated_docs"
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# The .generated_docs file lists itself, so we don't need to explicitly
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# delete it.
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fi
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}
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# Takes a path $1 to traverse for md files to append the ga-beacon tracking
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# link to, if needed. If $2 is set, just print files that are missing
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# the link.
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kube::util::gen-analytics() {
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local path="$1"
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local dryrun="${2:-}"
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local mdfiles dir link
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# find has some strange inconsistencies between darwin/linux. The
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# path to search must end in '/' for linux, but darwin will put an extra
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# slash in results if there is a trailing '/'.
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if [[ $( uname ) == 'Linux' ]]; then
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dir="${path}/"
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else
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dir="${path}"
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fi
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# We don't touch files in special dirs, and the kubectl docs are
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# autogenerated by gendocs.
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# Don't descend into .directories
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mdfiles=($( find "${dir}" -name "*.md" -type f \
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-not -path '*/\.*' \
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-not -path "${path}/vendor/*" \
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-not -path "${path}/staging/*" \
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-not -path "${path}/third_party/*" \
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-not -path "${path}/_gopath/*" \
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-not -path "${path}/_output/*" \
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-not -path "${path}/docs/user-guide/kubectl/kubectl*" ))
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for f in "${mdfiles[@]}"; do
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link=$(kube::util::analytics-link "${f#${path}/}")
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if grep -q -F -x "${link}" "${f}"; then
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continue
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elif [[ -z "${dryrun}" ]]; then
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echo -e "\n\n${link}" >> "${f}"
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else
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echo "$f"
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fi
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done
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}
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# Prints analytics link to append to a file at path $1.
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kube::util::analytics-link() {
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local path="$1"
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echo "[]()"
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}
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# Takes a group/version and returns the path to its location on disk, sans
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# "pkg". E.g.:
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# * default behavior: extensions/v1beta1 -> apis/extensions/v1beta1
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# * default behavior for only a group: experimental -> apis/experimental
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# * Special handling for empty group: v1 -> api/v1, unversioned -> api/unversioned
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# * Special handling for groups suffixed with ".k8s.io": foo.k8s.io/v1 -> apis/foo/v1
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# * Very special handling for when both group and version are "": / -> api
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kube::util::group-version-to-pkg-path() {
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local group_version="$1"
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# Special cases first.
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# TODO(lavalamp): Simplify this by moving pkg/api/v1 and splitting pkg/api,
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# moving the results to pkg/apis/api.
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case "${group_version}" in
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# both group and version are "", this occurs when we generate deep copies for internal objects of the legacy v1 API.
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__internal)
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echo "api"
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;;
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v1)
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echo "api/v1"
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;;
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unversioned)
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echo "api/unversioned"
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;;
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*.k8s.io)
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echo "apis/${group_version%.*k8s.io}"
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;;
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*.k8s.io/*)
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echo "apis/${group_version/.*k8s.io/}"
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;;
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*)
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echo "apis/${group_version%__internal}"
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;;
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esac
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}
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# Takes a group/version and returns the swagger-spec file name.
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# default behavior: extensions/v1beta1 -> extensions_v1beta1
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# special case for v1: v1 -> v1
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kube::util::gv-to-swagger-name() {
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local group_version="$1"
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case "${group_version}" in
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v1)
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echo "v1"
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;;
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*)
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echo "${group_version%/*}_${group_version#*/}"
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;;
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esac
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}
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# Fetches swagger spec from apiserver.
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# Assumed vars:
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# SWAGGER_API_PATH: Base path for swaggerapi on apiserver. Ex:
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# http://localhost:8080/swaggerapi.
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# SWAGGER_ROOT_DIR: Root dir where we want to to save the fetched spec.
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# VERSIONS: Array of group versions to include in swagger spec.
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kube::util::fetch-swagger-spec() {
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for ver in ${VERSIONS}; do
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if [[ " ${KUBE_NONSERVER_GROUP_VERSIONS} " == *" ${ver} "* ]]; then
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continue
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fi
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# fetch the swagger spec for each group version.
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if [[ ${ver} == "v1" ]]; then
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SUBPATH="api"
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else
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SUBPATH="apis"
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fi
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SUBPATH="${SUBPATH}/${ver}"
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SWAGGER_JSON_NAME="$(kube::util::gv-to-swagger-name ${ver}).json"
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curl -w "\n" -fs "${SWAGGER_API_PATH}${SUBPATH}" > "${SWAGGER_ROOT_DIR}/${SWAGGER_JSON_NAME}"
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# fetch the swagger spec for the discovery mechanism at group level.
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if [[ ${ver} == "v1" ]]; then
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continue
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fi
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SUBPATH="apis/"${ver%/*}
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SWAGGER_JSON_NAME="${ver%/*}.json"
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curl -w "\n" -fs "${SWAGGER_API_PATH}${SUBPATH}" > "${SWAGGER_ROOT_DIR}/${SWAGGER_JSON_NAME}"
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done
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# fetch swagger specs for other discovery mechanism.
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curl -w "\n" -fs "${SWAGGER_API_PATH}" > "${SWAGGER_ROOT_DIR}/resourceListing.json"
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curl -w "\n" -fs "${SWAGGER_API_PATH}version" > "${SWAGGER_ROOT_DIR}/version.json"
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curl -w "\n" -fs "${SWAGGER_API_PATH}api" > "${SWAGGER_ROOT_DIR}/api.json"
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curl -w "\n" -fs "${SWAGGER_API_PATH}apis" > "${SWAGGER_ROOT_DIR}/apis.json"
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curl -w "\n" -fs "${SWAGGER_API_PATH}logs" > "${SWAGGER_ROOT_DIR}/logs.json"
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}
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# Returns the name of the upstream remote repository name for the local git
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# repo, e.g. "upstream" or "origin".
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kube::util::git_upstream_remote_name() {
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git remote -v | grep fetch |\
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grep -E 'github.com[/:]kubernetes/kubernetes|k8s.io/kubernetes' |\
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head -n 1 | awk '{print $1}'
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}
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# Checks whether there are any files matching pattern $2 changed between the
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# current branch and upstream branch named by $1.
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# Returns 1 (false) if there are no changes, 0 (true) if there are changes
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# detected.
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kube::util::has_changes_against_upstream_branch() {
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local -r git_branch=$1
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local -r pattern=$2
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local -r not_pattern=${3:-totallyimpossiblepattern}
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local full_branch
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full_branch="$(kube::util::git_upstream_remote_name)/${git_branch}"
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echo "Checking for '${pattern}' changes against '${full_branch}'"
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# make sure the branch is valid, otherwise the check will pass erroneously.
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if ! git describe "${full_branch}" >/dev/null; then
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# abort!
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exit 1
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fi
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# notice this uses ... to find the first shared ancestor
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if git diff --name-only "${full_branch}...HEAD" | grep -v "${not_pattern}" | grep "${pattern}" > /dev/null; then
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return 0
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fi
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# also check for pending changes
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if git status --porcelain | grep -v "${not_pattern}" | grep "${pattern}" > /dev/null; then
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echo "Detected '${pattern}' uncommitted changes."
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return 0
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fi
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echo "No '${pattern}' changes detected."
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return 1
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}
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kube::util::download_file() {
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local -r url=$1
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local -r destination_file=$2
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rm ${destination_file} 2&> /dev/null || true
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for i in $(seq 5)
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do
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if ! curl -fsSL --retry 3 --keepalive-time 2 ${url} -o ${destination_file}; then
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echo "Downloading ${url} failed. $((5-i)) retries left."
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sleep 1
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else
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echo "Downloading ${url} succeed"
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return 0
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fi
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done
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return 1
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}
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# Test whether cfssl and cfssljson are installed.
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# Sets:
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# CFSSL_BIN: The path of the installed cfssl binary
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# CFSSLJSON_BIN: The path of the installed cfssljson binary
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function kube::util::test_cfssl_installed {
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if ! command -v cfssl &>/dev/null || ! command -v cfssljson &>/dev/null; then
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echo "Failed to successfully run 'cfssl', please verify that cfssl and cfssljson are in \$PATH."
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echo "Hint: export PATH=\$PATH:\$GOPATH/bin; go get -u github.com/cloudflare/cfssl/cmd/..."
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exit 1
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fi
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CFSSL_BIN=$(command -v cfssl)
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CFSSLJSON_BIN=$(command -v cfssljson)
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}
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# Test whether openssl is installed.
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# Sets:
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# OPENSSL_BIN: The path to the openssl binary to use
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function kube::util::test_openssl_installed {
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openssl version >& /dev/null
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if [ "$?" != "0" ]; then
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echo "Failed to run openssl. Please ensure openssl is installed"
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exit 1
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fi
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OPENSSL_BIN=$(command -v openssl)
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}
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# creates a client CA, args are sudo, dest-dir, ca-id, purpose
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# purpose is dropped in after "key encipherment", you usually want
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# '"client auth"'
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|
# '"server auth"'
|
|
# '"client auth","server auth"'
|
|
function kube::util::create_signing_certkey {
|
|
local sudo=$1
|
|
local dest_dir=$2
|
|
local id=$3
|
|
local purpose=$4
|
|
# Create client ca
|
|
${sudo} /bin/bash -e <<EOF
|
|
rm -f "${dest_dir}/${id}-ca.crt" "${dest_dir}/${id}-ca.key"
|
|
${OPENSSL_BIN} req -x509 -sha256 -new -nodes -days 365 -newkey rsa:2048 -keyout "${dest_dir}/${id}-ca.key" -out "${dest_dir}/${id}-ca.crt" -subj "/C=xx/ST=x/L=x/O=x/OU=x/CN=ca/emailAddress=x/"
|
|
echo '{"signing":{"default":{"expiry":"43800h","usages":["signing","key encipherment",${purpose}]}}}' > "${dest_dir}/${id}-ca-config.json"
|
|
EOF
|
|
}
|
|
|
|
# signs a client certificate: args are sudo, dest-dir, CA, filename (roughly), username, groups...
|
|
function kube::util::create_client_certkey {
|
|
local sudo=$1
|
|
local dest_dir=$2
|
|
local ca=$3
|
|
local id=$4
|
|
local cn=${5:-$4}
|
|
local groups=""
|
|
local SEP=""
|
|
shift 5
|
|
while [ -n "${1:-}" ]; do
|
|
groups+="${SEP}{\"O\":\"$1\"}"
|
|
SEP=","
|
|
shift 1
|
|
done
|
|
${sudo} /bin/bash -e <<EOF
|
|
cd ${dest_dir}
|
|
echo '{"CN":"${cn}","names":[${groups}],"hosts":[""],"key":{"algo":"rsa","size":2048}}' | ${CFSSL_BIN} gencert -ca=${ca}.crt -ca-key=${ca}.key -config=${ca}-config.json - | ${CFSSLJSON_BIN} -bare client-${id}
|
|
mv "client-${id}-key.pem" "client-${id}.key"
|
|
mv "client-${id}.pem" "client-${id}.crt"
|
|
rm -f "client-${id}.csr"
|
|
EOF
|
|
}
|
|
|
|
# signs a serving certificate: args are sudo, dest-dir, ca, filename (roughly), subject, hosts...
|
|
function kube::util::create_serving_certkey {
|
|
local sudo=$1
|
|
local dest_dir=$2
|
|
local ca=$3
|
|
local id=$4
|
|
local cn=${5:-$4}
|
|
local hosts=""
|
|
local SEP=""
|
|
shift 5
|
|
while [ -n "${1:-}" ]; do
|
|
hosts+="${SEP}\"$1\""
|
|
SEP=","
|
|
shift 1
|
|
done
|
|
${sudo} /bin/bash -e <<EOF
|
|
cd ${dest_dir}
|
|
echo '{"CN":"${cn}","hosts":[${hosts}],"key":{"algo":"rsa","size":2048}}' | ${CFSSL_BIN} gencert -ca=${ca}.crt -ca-key=${ca}.key -config=${ca}-config.json - | ${CFSSLJSON_BIN} -bare serving-${id}
|
|
mv "serving-${id}-key.pem" "serving-${id}.key"
|
|
mv "serving-${id}.pem" "serving-${id}.crt"
|
|
rm -f "serving-${id}.csr"
|
|
EOF
|
|
}
|
|
|
|
# creates a self-contained kubeconfig: args are sudo, dest-dir, ca file, host, port, client id, token(optional)
|
|
function kube::util::write_client_kubeconfig {
|
|
local sudo=$1
|
|
local dest_dir=$2
|
|
local ca_file=$3
|
|
local api_host=$4
|
|
local api_port=$5
|
|
local client_id=$6
|
|
local token=${7:-}
|
|
cat <<EOF | ${sudo} tee "${dest_dir}"/${client_id}.kubeconfig > /dev/null
|
|
apiVersion: v1
|
|
kind: Config
|
|
clusters:
|
|
- cluster:
|
|
certificate-authority: ${ca_file}
|
|
server: https://${api_host}:${api_port}/
|
|
name: local-up-cluster
|
|
users:
|
|
- user:
|
|
token: ${token}
|
|
client-certificate: ${dest_dir}/client-${client_id}.crt
|
|
client-key: ${dest_dir}/client-${client_id}.key
|
|
name: local-up-cluster
|
|
contexts:
|
|
- context:
|
|
cluster: local-up-cluster
|
|
user: local-up-cluster
|
|
name: local-up-cluster
|
|
current-context: local-up-cluster
|
|
EOF
|
|
|
|
# flatten the kubeconfig files to make them self contained
|
|
username=$(whoami)
|
|
${sudo} /bin/bash -e <<EOF
|
|
$(kube::util::find-binary kubectl) --kubeconfig="${dest_dir}/${client_id}.kubeconfig" config view --minify --flatten > "/tmp/${client_id}.kubeconfig"
|
|
mv -f "/tmp/${client_id}.kubeconfig" "${dest_dir}/${client_id}.kubeconfig"
|
|
chown ${username} "${dest_dir}/${client_id}.kubeconfig"
|
|
EOF
|
|
}
|
|
|
|
# Determines if docker can be run, failures may simply require that the user be added to the docker group.
|
|
function kube::util::ensure_docker_daemon_connectivity {
|
|
DOCKER=(docker ${DOCKER_OPTS})
|
|
if ! "${DOCKER[@]}" info > /dev/null 2>&1 ; then
|
|
cat <<'EOF' >&2
|
|
Can't connect to 'docker' daemon. please fix and retry.
|
|
|
|
Possible causes:
|
|
- Docker Daemon not started
|
|
- Linux: confirm via your init system
|
|
- macOS w/ docker-machine: run `docker-machine ls` and `docker-machine start <name>`
|
|
- macOS w/ Docker for Mac: Check the menu bar and start the Docker application
|
|
- DOCKER_HOST hasn't been set or is set incorrectly
|
|
- Linux: domain socket is used, DOCKER_* should be unset. In Bash run `unset ${!DOCKER_*}`
|
|
- macOS w/ docker-machine: run `eval "$(docker-machine env <name>)"`
|
|
- macOS w/ Docker for Mac: domain socket is used, DOCKER_* should be unset. In Bash run `unset ${!DOCKER_*}`
|
|
- Other things to check:
|
|
- Linux: User isn't in 'docker' group. Add and relogin.
|
|
- Something like 'sudo usermod -a -G docker ${USER}'
|
|
- RHEL7 bug and workaround: https://bugzilla.redhat.com/show_bug.cgi?id=1119282#c8
|
|
EOF
|
|
return 1
|
|
fi
|
|
}
|
|
|
|
|
|
|
|
# ex: ts=2 sw=2 et filetype=sh
|