mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-14 02:10:21 +00:00
465 lines
16 KiB
Bash
465 lines
16 KiB
Bash
#!/usr/bin/env bash
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# Copyright 2016 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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# Due to the GCE custom metadata size limit, we split the entire script into two
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# files configure.sh and configure-helper.sh. The functionality of downloading
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# kubernetes configuration, manifests, docker images, and binary files are
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# put in configure.sh, which is uploaded via GCE custom metadata.
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set -o errexit
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set -o nounset
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set -o pipefail
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### Hardcoded constants
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DEFAULT_CNI_VERSION="v0.6.0"
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DEFAULT_CNI_SHA1="d595d3ded6499a64e8dac02466e2f5f2ce257c9f"
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DEFAULT_NPD_VERSION="v0.5.0"
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DEFAULT_NPD_SHA1="650ecfb2ae495175ee43706d0bd862a1ea7f1395"
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DEFAULT_CRICTL_VERSION="v1.12.0"
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DEFAULT_CRICTL_SHA1="82ef8b44849f9da0589c87e9865d4716573eec7f"
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DEFAULT_MOUNTER_TAR_SHA="8003b798cf33c7f91320cd6ee5cec4fa22244571"
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###
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# Use --retry-connrefused opt only if it's supported by curl.
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CURL_RETRY_CONNREFUSED=""
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if curl --help | grep -q -- '--retry-connrefused'; then
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CURL_RETRY_CONNREFUSED='--retry-connrefused'
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fi
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function set-broken-motd {
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cat > /etc/motd <<EOF
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Broken (or in progress) Kubernetes node setup! Check the cluster initialization status
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using the following commands.
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Master instance:
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- sudo systemctl status kube-master-installation
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- sudo systemctl status kube-master-configuration
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Node instance:
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- sudo systemctl status kube-node-installation
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- sudo systemctl status kube-node-configuration
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EOF
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}
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function download-kube-env {
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# Fetch kube-env from GCE metadata server.
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(
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umask 077
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local -r tmp_kube_env="/tmp/kube-env.yaml"
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curl --fail --retry 5 --retry-delay 3 ${CURL_RETRY_CONNREFUSED} --silent --show-error \
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-H "X-Google-Metadata-Request: True" \
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-o "${tmp_kube_env}" \
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http://metadata.google.internal/computeMetadata/v1/instance/attributes/kube-env
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# Convert the yaml format file into a shell-style file.
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eval $(python -c '''
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import pipes,sys,yaml
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for k,v in yaml.load(sys.stdin).iteritems():
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print("readonly {var}={value}".format(var = k, value = pipes.quote(str(v))))
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''' < "${tmp_kube_env}" > "${KUBE_HOME}/kube-env")
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rm -f "${tmp_kube_env}"
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)
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}
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function download-kubelet-config {
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local -r dest="$1"
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echo "Downloading Kubelet config file, if it exists"
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# Fetch kubelet config file from GCE metadata server.
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(
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umask 077
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local -r tmp_kubelet_config="/tmp/kubelet-config.yaml"
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if curl --fail --retry 5 --retry-delay 3 ${CURL_RETRY_CONNREFUSED} --silent --show-error \
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-H "X-Google-Metadata-Request: True" \
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-o "${tmp_kubelet_config}" \
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http://metadata.google.internal/computeMetadata/v1/instance/attributes/kubelet-config; then
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# only write to the final location if curl succeeds
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mv "${tmp_kubelet_config}" "${dest}"
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elif [[ "${REQUIRE_METADATA_KUBELET_CONFIG_FILE:-false}" == "true" ]]; then
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echo "== Failed to download required Kubelet config file from metadata server =="
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exit 1
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fi
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)
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}
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function download-kube-master-certs {
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# Fetch kube-env from GCE metadata server.
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(
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umask 077
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local -r tmp_kube_master_certs="/tmp/kube-master-certs.yaml"
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curl --fail --retry 5 --retry-delay 3 ${CURL_RETRY_CONNREFUSED} --silent --show-error \
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-H "X-Google-Metadata-Request: True" \
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-o "${tmp_kube_master_certs}" \
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http://metadata.google.internal/computeMetadata/v1/instance/attributes/kube-master-certs
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# Convert the yaml format file into a shell-style file.
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eval $(python -c '''
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import pipes,sys,yaml
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for k,v in yaml.load(sys.stdin).iteritems():
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print("readonly {var}={value}".format(var = k, value = pipes.quote(str(v))))
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''' < "${tmp_kube_master_certs}" > "${KUBE_HOME}/kube-master-certs")
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rm -f "${tmp_kube_master_certs}"
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)
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}
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function validate-hash {
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local -r file="$1"
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local -r expected="$2"
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actual=$(sha1sum ${file} | awk '{ print $1 }') || true
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if [[ "${actual}" != "${expected}" ]]; then
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echo "== ${file} corrupted, sha1 ${actual} doesn't match expected ${expected} =="
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return 1
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fi
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}
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# Retry a download until we get it. Takes a hash and a set of URLs.
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#
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# $1 is the sha1 of the URL. Can be "" if the sha1 is unknown.
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# $2+ are the URLs to download.
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function download-or-bust {
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local -r hash="$1"
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shift 1
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local -r urls=( $* )
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while true; do
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for url in "${urls[@]}"; do
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local file="${url##*/}"
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rm -f "${file}"
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if ! curl -f --ipv4 -Lo "${file}" --connect-timeout 20 --max-time 300 --retry 6 --retry-delay 10 ${CURL_RETRY_CONNREFUSED} "${url}"; then
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echo "== Failed to download ${url}. Retrying. =="
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elif [[ -n "${hash}" ]] && ! validate-hash "${file}" "${hash}"; then
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echo "== Hash validation of ${url} failed. Retrying. =="
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else
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if [[ -n "${hash}" ]]; then
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echo "== Downloaded ${url} (SHA1 = ${hash}) =="
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else
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echo "== Downloaded ${url} =="
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fi
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return
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fi
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done
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done
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}
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function is-preloaded {
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local -r key=$1
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local -r value=$2
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grep -qs "${key},${value}" "${KUBE_HOME}/preload_info"
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}
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function split-commas {
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echo $1 | tr "," "\n"
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}
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function remount-flexvolume-directory {
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local -r flexvolume_plugin_dir=$1
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mkdir -p $flexvolume_plugin_dir
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mount --bind $flexvolume_plugin_dir $flexvolume_plugin_dir
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mount -o remount,exec $flexvolume_plugin_dir
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}
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function install-gci-mounter-tools {
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CONTAINERIZED_MOUNTER_HOME="${KUBE_HOME}/containerized_mounter"
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local -r mounter_tar_sha="${DEFAULT_MOUNTER_TAR_SHA}"
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if is-preloaded "mounter" "${mounter_tar_sha}"; then
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echo "mounter is preloaded."
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return
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fi
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echo "Downloading gci mounter tools."
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mkdir -p "${CONTAINERIZED_MOUNTER_HOME}"
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chmod a+x "${CONTAINERIZED_MOUNTER_HOME}"
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mkdir -p "${CONTAINERIZED_MOUNTER_HOME}/rootfs"
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download-or-bust "${mounter_tar_sha}" "https://storage.googleapis.com/kubernetes-release/gci-mounter/mounter.tar"
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cp "${KUBE_HOME}/kubernetes/server/bin/mounter" "${CONTAINERIZED_MOUNTER_HOME}/mounter"
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chmod a+x "${CONTAINERIZED_MOUNTER_HOME}/mounter"
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mv "${KUBE_HOME}/mounter.tar" /tmp/mounter.tar
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tar xf /tmp/mounter.tar -C "${CONTAINERIZED_MOUNTER_HOME}/rootfs"
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rm /tmp/mounter.tar
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mkdir -p "${CONTAINERIZED_MOUNTER_HOME}/rootfs/var/lib/kubelet"
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}
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# Install node problem detector binary.
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function install-node-problem-detector {
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if [[ -n "${NODE_PROBLEM_DETECTOR_VERSION:-}" ]]; then
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local -r npd_version="${NODE_PROBLEM_DETECTOR_VERSION}"
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local -r npd_sha1="${NODE_PROBLEM_DETECTOR_TAR_HASH}"
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else
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local -r npd_version="${DEFAULT_NPD_VERSION}"
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local -r npd_sha1="${DEFAULT_NPD_SHA1}"
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fi
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local -r npd_tar="node-problem-detector-${npd_version}.tar.gz"
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if is-preloaded "${npd_tar}" "${npd_sha1}"; then
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echo "node-problem-detector is preloaded."
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return
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fi
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echo "Downloading node problem detector."
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local -r npd_release_path="https://storage.googleapis.com/kubernetes-release"
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download-or-bust "${npd_sha1}" "${npd_release_path}/node-problem-detector/${npd_tar}"
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local -r npd_dir="${KUBE_HOME}/node-problem-detector"
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mkdir -p "${npd_dir}"
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tar xzf "${KUBE_HOME}/${npd_tar}" -C "${npd_dir}" --overwrite
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mv "${npd_dir}/bin"/* "${KUBE_BIN}"
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chmod a+x "${KUBE_BIN}/node-problem-detector"
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rmdir "${npd_dir}/bin"
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rm -f "${KUBE_HOME}/${npd_tar}"
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}
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function install-cni-binaries {
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local -r cni_tar="cni-plugins-amd64-${DEFAULT_CNI_VERSION}.tgz"
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local -r cni_sha1="${DEFAULT_CNI_SHA1}"
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if is-preloaded "${cni_tar}" "${cni_sha1}"; then
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echo "${cni_tar} is preloaded."
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return
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fi
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echo "Downloading cni binaries"
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download-or-bust "${cni_sha1}" "https://storage.googleapis.com/kubernetes-release/network-plugins/${cni_tar}"
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local -r cni_dir="${KUBE_HOME}/cni"
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mkdir -p "${cni_dir}/bin"
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tar xzf "${KUBE_HOME}/${cni_tar}" -C "${cni_dir}/bin" --overwrite
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mv "${cni_dir}/bin"/* "${KUBE_BIN}"
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rmdir "${cni_dir}/bin"
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rm -f "${KUBE_HOME}/${cni_tar}"
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}
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# Install crictl binary.
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function install-crictl {
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if [[ -n "${CRICTL_VERSION:-}" ]]; then
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local -r crictl_version="${CRICTL_VERSION}"
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local -r crictl_sha1="${CRICTL_TAR_HASH}"
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else
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local -r crictl_version="${DEFAULT_CRICTL_VERSION}"
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local -r crictl_sha1="${DEFAULT_CRICTL_SHA1}"
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fi
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local -r crictl="crictl-${crictl_version}-linux-amd64"
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# Create crictl config file.
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cat > /etc/crictl.yaml <<EOF
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runtime-endpoint: ${CONTAINER_RUNTIME_ENDPOINT:-unix:///var/run/dockershim.sock}
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EOF
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if is-preloaded "${crictl}" "${crictl_sha1}"; then
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echo "crictl is preloaded"
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return
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fi
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echo "Downloading crictl"
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local -r crictl_path="https://storage.googleapis.com/kubernetes-release/crictl"
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download-or-bust "${crictl_sha1}" "${crictl_path}/${crictl}"
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mv "${KUBE_HOME}/${crictl}" "${KUBE_BIN}/crictl"
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chmod a+x "${KUBE_BIN}/crictl"
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}
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function install-exec-auth-plugin {
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if [[ ! "${EXEC_AUTH_PLUGIN_URL:-}" ]]; then
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return
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fi
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local -r plugin_url="${EXEC_AUTH_PLUGIN_URL}"
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local -r plugin_sha1="${EXEC_AUTH_PLUGIN_SHA1}"
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echo "Downloading gke-exec-auth-plugin binary"
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download-or-bust "${plugin_sha1}" "${plugin_url}"
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mv "${KUBE_HOME}/gke-exec-auth-plugin" "${KUBE_BIN}/gke-exec-auth-plugin"
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chmod a+x "${KUBE_BIN}/gke-exec-auth-plugin"
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if [[ ! "${EXEC_AUTH_PLUGIN_LICENSE_URL:-}" ]]; then
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return
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fi
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local -r license_url="${EXEC_AUTH_PLUGIN_LICENSE_URL}"
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echo "Downloading gke-exec-auth-plugin license"
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download-or-bust "" "${license_url}"
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mv "${KUBE_HOME}/LICENSE" "${KUBE_BIN}/gke-exec-auth-plugin-license"
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}
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function install-kube-manifests {
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# Put kube-system pods manifests in ${KUBE_HOME}/kube-manifests/.
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local dst_dir="${KUBE_HOME}/kube-manifests"
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mkdir -p "${dst_dir}"
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local -r manifests_tar_urls=( $(split-commas "${KUBE_MANIFESTS_TAR_URL}") )
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local -r manifests_tar="${manifests_tar_urls[0]##*/}"
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if [ -n "${KUBE_MANIFESTS_TAR_HASH:-}" ]; then
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local -r manifests_tar_hash="${KUBE_MANIFESTS_TAR_HASH}"
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else
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echo "Downloading k8s manifests sha1 (not found in env)"
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download-or-bust "" "${manifests_tar_urls[@]/.tar.gz/.tar.gz.sha1}"
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local -r manifests_tar_hash=$(cat "${manifests_tar}.sha1")
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fi
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if is-preloaded "${manifests_tar}" "${manifests_tar_hash}"; then
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echo "${manifests_tar} is preloaded."
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return
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fi
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echo "Downloading k8s manifests tar"
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download-or-bust "${manifests_tar_hash}" "${manifests_tar_urls[@]}"
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tar xzf "${KUBE_HOME}/${manifests_tar}" -C "${dst_dir}" --overwrite
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local -r kube_addon_registry="${KUBE_ADDON_REGISTRY:-k8s.gcr.io}"
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if [[ "${kube_addon_registry}" != "k8s.gcr.io" ]]; then
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find "${dst_dir}" -name \*.yaml -or -name \*.yaml.in | \
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xargs sed -ri "s@(image:\s.*)k8s.gcr.io@\1${kube_addon_registry}@"
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find "${dst_dir}" -name \*.manifest -or -name \*.json | \
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xargs sed -ri "s@(image\":\s+\")k8s.gcr.io@\1${kube_addon_registry}@"
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fi
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cp "${dst_dir}/kubernetes/gci-trusty/gci-configure-helper.sh" "${KUBE_BIN}/configure-helper.sh"
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if [[ -e "${dst_dir}/kubernetes/gci-trusty/gke-internal-configure-helper.sh" ]]; then
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cp "${dst_dir}/kubernetes/gci-trusty/gke-internal-configure-helper.sh" "${KUBE_BIN}/"
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fi
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cp "${dst_dir}/kubernetes/gci-trusty/health-monitor.sh" "${KUBE_BIN}/health-monitor.sh"
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rm -f "${KUBE_HOME}/${manifests_tar}"
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rm -f "${KUBE_HOME}/${manifests_tar}.sha1"
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}
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# A helper function for loading a docker image. It keeps trying up to 5 times.
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#
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# $1: Full path of the docker image
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function try-load-docker-image {
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local -r img=$1
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echo "Try to load docker image file ${img}"
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# Temporarily turn off errexit, because we don't want to exit on first failure.
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set +e
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local -r max_attempts=5
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local -i attempt_num=1
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until timeout 30 ${LOAD_IMAGE_COMMAND:-docker load -i} "${img}"; do
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if [[ "${attempt_num}" == "${max_attempts}" ]]; then
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echo "Fail to load docker image file ${img} after ${max_attempts} retries. Exit!!"
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exit 1
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else
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attempt_num=$((attempt_num+1))
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sleep 5
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fi
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done
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# Re-enable errexit.
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set -e
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}
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# Loads kube-system docker images. It is better to do it before starting kubelet,
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# as kubelet will restart docker daemon, which may interfere with loading images.
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function load-docker-images {
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echo "Start loading kube-system docker images"
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local -r img_dir="${KUBE_HOME}/kube-docker-files"
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if [[ "${KUBERNETES_MASTER:-}" == "true" ]]; then
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try-load-docker-image "${img_dir}/kube-apiserver.tar"
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try-load-docker-image "${img_dir}/kube-controller-manager.tar"
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try-load-docker-image "${img_dir}/kube-scheduler.tar"
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else
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try-load-docker-image "${img_dir}/kube-proxy.tar"
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fi
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}
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# Downloads kubernetes binaries and kube-system manifest tarball, unpacks them,
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# and places them into suitable directories. Files are placed in /home/kubernetes.
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function install-kube-binary-config {
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cd "${KUBE_HOME}"
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local -r server_binary_tar_urls=( $(split-commas "${SERVER_BINARY_TAR_URL}") )
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local -r server_binary_tar="${server_binary_tar_urls[0]##*/}"
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if [[ -n "${SERVER_BINARY_TAR_HASH:-}" ]]; then
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local -r server_binary_tar_hash="${SERVER_BINARY_TAR_HASH}"
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else
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echo "Downloading binary release sha1 (not found in env)"
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download-or-bust "" "${server_binary_tar_urls[@]/.tar.gz/.tar.gz.sha1}"
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local -r server_binary_tar_hash=$(cat "${server_binary_tar}.sha1")
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fi
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if is-preloaded "${server_binary_tar}" "${server_binary_tar_hash}"; then
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echo "${server_binary_tar} is preloaded."
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else
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echo "Downloading binary release tar"
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download-or-bust "${server_binary_tar_hash}" "${server_binary_tar_urls[@]}"
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tar xzf "${KUBE_HOME}/${server_binary_tar}" -C "${KUBE_HOME}" --overwrite
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# Copy docker_tag and image files to ${KUBE_HOME}/kube-docker-files.
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local -r src_dir="${KUBE_HOME}/kubernetes/server/bin"
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local dst_dir="${KUBE_HOME}/kube-docker-files"
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mkdir -p "${dst_dir}"
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cp "${src_dir}/"*.docker_tag "${dst_dir}"
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if [[ "${KUBERNETES_MASTER:-}" == "false" ]]; then
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cp "${src_dir}/kube-proxy.tar" "${dst_dir}"
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else
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cp "${src_dir}/kube-apiserver.tar" "${dst_dir}"
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cp "${src_dir}/kube-controller-manager.tar" "${dst_dir}"
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cp "${src_dir}/kube-scheduler.tar" "${dst_dir}"
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cp -r "${KUBE_HOME}/kubernetes/addons" "${dst_dir}"
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fi
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load-docker-images
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mv "${src_dir}/kubelet" "${KUBE_BIN}"
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mv "${src_dir}/kubectl" "${KUBE_BIN}"
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mv "${KUBE_HOME}/kubernetes/LICENSES" "${KUBE_HOME}"
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mv "${KUBE_HOME}/kubernetes/kubernetes-src.tar.gz" "${KUBE_HOME}"
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fi
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if [[ "${KUBERNETES_MASTER:-}" == "false" ]] && \
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[[ "${ENABLE_NODE_PROBLEM_DETECTOR:-}" == "standalone" ]]; then
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install-node-problem-detector
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fi
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if [[ "${NETWORK_PROVIDER:-}" == "kubenet" ]] || \
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[[ "${NETWORK_PROVIDER:-}" == "cni" ]]; then
|
|
install-cni-binaries
|
|
fi
|
|
|
|
# Put kube-system pods manifests in ${KUBE_HOME}/kube-manifests/.
|
|
install-kube-manifests
|
|
chmod -R 755 "${KUBE_BIN}"
|
|
|
|
# Install gci mounter related artifacts to allow mounting storage volumes in GCI
|
|
install-gci-mounter-tools
|
|
|
|
# Remount the Flexvolume directory with the "exec" option, if needed.
|
|
if [[ "${REMOUNT_VOLUME_PLUGIN_DIR:-}" == "true" && -n "${VOLUME_PLUGIN_DIR:-}" ]]; then
|
|
remount-flexvolume-directory "${VOLUME_PLUGIN_DIR}"
|
|
fi
|
|
|
|
# Install crictl on each node.
|
|
install-crictl
|
|
|
|
if [[ "${KUBERNETES_MASTER:-}" == "false" ]]; then
|
|
# TODO(awly): include the binary and license in the OS image.
|
|
install-exec-auth-plugin
|
|
fi
|
|
|
|
# Clean up.
|
|
rm -rf "${KUBE_HOME}/kubernetes"
|
|
rm -f "${KUBE_HOME}/${server_binary_tar}"
|
|
rm -f "${KUBE_HOME}/${server_binary_tar}.sha1"
|
|
}
|
|
|
|
######### Main Function ##########
|
|
echo "Start to install kubernetes files"
|
|
# if install fails, message-of-the-day (motd) will warn at login shell
|
|
set-broken-motd
|
|
|
|
KUBE_HOME="/home/kubernetes"
|
|
KUBE_BIN="${KUBE_HOME}/bin"
|
|
|
|
# download and source kube-env
|
|
download-kube-env
|
|
source "${KUBE_HOME}/kube-env"
|
|
|
|
download-kubelet-config "${KUBE_HOME}/kubelet-config.yaml"
|
|
|
|
# master certs
|
|
if [[ "${KUBERNETES_MASTER:-}" == "true" ]]; then
|
|
download-kube-master-certs
|
|
fi
|
|
|
|
# binaries and kube-system manifests
|
|
install-kube-binary-config
|
|
|
|
echo "Done for installing kubernetes files"
|