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First hack at upgrade script for GCE:
Address kubernetes#6075: Shoot the master VM while saving the master-pd. This takes a couple of minor changes to configure-vm.sh, some of which also would be necessary for reboot. In particular, I changed it so that the kube-token instance metadata is no longer required after inception; instead, we mount the master-pd and see if we've already created the known tokens file before blocking on the instance metadata. Also partially addresses kubernetes#6099 in bash by refactoring the kube-push path.
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| #!/bin/bash | ||
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| # Copyright 2015 Google Inc. All rights reserved. | ||
| # | ||
| # 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. | ||
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| # !!!EXPERIMENTAL !!! Upgrade script for GCE. Expect this to get | ||
| # rewritten in Go in relatively short order, but it allows us to start | ||
| # testing the concepts. | ||
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| set -o errexit | ||
| set -o nounset | ||
| set -o pipefail | ||
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| # VERSION_REGEX matches things like "v0.13.1" | ||
| readonly VERSION_REGEX="^v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)$" | ||
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| # CI_VERSION_REGEX matches things like "v0.14.1-341-ge0c9d9e" | ||
| readonly CI_VERSION_REGEX="^v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)-(.*)$" | ||
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| if [[ "${KUBERNETES_PROVIDER:-gce}" != "gce" ]]; then | ||
| echo "!!! ${1} only works on GCE" >&2 | ||
| exit 1 | ||
| fi | ||
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| KUBE_ROOT=$(dirname "${BASH_SOURCE}")/../.. | ||
| source "${KUBE_ROOT}/cluster/kube-env.sh" | ||
| source "${KUBE_ROOT}/cluster/${KUBERNETES_PROVIDER}/util.sh" | ||
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| function usage() { | ||
| echo "!!! EXPERIMENTAL !!!" | ||
| echo "" | ||
| echo "${0} [-M|-N] <release or continuous integration version>" | ||
| echo " Upgrades master and nodes by default" | ||
| echo " -M: Upgrade master only" | ||
| echo " -N: Upgrade nodes only" | ||
| echo "" | ||
| echo "(... Fetching current release versions ...)" | ||
| echo "" | ||
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| local latest_release | ||
| local latest_stable | ||
| local latest_ci | ||
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| latest_stable=$(gsutil cat gs://kubernetes-release/release/stable.txt) | ||
| latest_release=$(gsutil cat gs://kubernetes-release/release/latest.txt) | ||
| latest_ci=$(gsutil cat gs://kubernetes-release/ci/latest.txt) | ||
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| echo "To upgrade to:" | ||
| echo " latest stable: ${0} ${latest_stable}" | ||
| echo " latest release: ${0} ${latest_release}" | ||
| echo " latest ci: ${0} ${latest_ci}" | ||
| } | ||
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| function upgrade-master() { | ||
| echo "== Upgrading master to ${SERVER_BINARY_TAR_URL}. Do not interrupt, deleting master instance. ==" | ||
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| ensure-temp-dir | ||
| detect-project | ||
| detect-master | ||
| get-password | ||
| set-master-htpasswd | ||
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| # Delete the master instance. Note that the master-pd is created | ||
| # with auto-delete=no, so it should not be deleted. | ||
| gcloud compute instances delete \ | ||
| --project "${PROJECT}" \ | ||
| --quiet \ | ||
| --zone "${ZONE}" \ | ||
| "${MASTER_NAME}" | ||
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| write-master-env | ||
| gcloud compute instances create "${MASTER_NAME}" \ | ||
| --address "${MASTER_NAME}-ip" \ | ||
| --project "${PROJECT}" \ | ||
| --zone "${ZONE}" \ | ||
| --machine-type "${MASTER_SIZE}" \ | ||
| --image-project="${IMAGE_PROJECT}" \ | ||
| --image "${IMAGE}" \ | ||
| --tags "${MASTER_TAG}" \ | ||
| --network "${NETWORK}" \ | ||
| --scopes "storage-ro" "compute-rw" \ | ||
| --can-ip-forward \ | ||
| --metadata-from-file \ | ||
| "startup-script=${KUBE_ROOT}/cluster/gce/configure-vm.sh" \ | ||
| "kube-env=${KUBE_TEMP}/master-kube-env.yaml" \ | ||
| --disk name="${MASTER_NAME}-pd" device-name=master-pd mode=rw boot=no auto-delete=no | ||
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| wait-for-master | ||
| } | ||
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| function wait-for-master() { | ||
| echo "== Waiting for new master to respond to API requests ==" | ||
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| until curl --insecure --user "${KUBE_USER}:${KUBE_PASSWORD}" --max-time 5 \ | ||
| --fail --output /dev/null --silent "https://${KUBE_MASTER_IP}/api/v1beta1/pods"; do | ||
| printf "." | ||
| sleep 2 | ||
| done | ||
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| echo "== Done ==" | ||
| } | ||
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| function upgrade-nodes() { | ||
| echo "== Upgrading nodes to ${SERVER_BINARY_TAR_URL}. ==" | ||
| ensure-temp-dir | ||
| detect-project | ||
| detect-minion-names | ||
| get-password | ||
| set-master-htpasswd | ||
| kube-update-nodes upgrade | ||
| echo "== Done ==" | ||
| } | ||
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| function tars_from_version() { | ||
| version=${1-} | ||
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| if [[ ${version} =~ ${VERSION_REGEX} ]]; then | ||
| SERVER_BINARY_TAR_URL="https://storage.googleapis.com/kubernetes-release/release/${version}/kubernetes-server-linux-amd64.tar.gz" | ||
| SALT_TAR_URL="https://storage.googleapis.com/kubernetes-release/release/${version}/kubernetes-salt.tar.gz" | ||
| elif [[ ${version} =~ ${CI_VERSION_REGEX} ]]; then | ||
| SERVER_BINARY_TAR_URL="https://storage.googleapis.com/kubernetes-release/ci/${version}/kubernetes-server-linux-amd64.tar.gz" | ||
| SALT_TAR_URL="https://storage.googleapis.com/kubernetes-release/ci/${version}/kubernetes-salt.tar.gz" | ||
| else | ||
| echo "!!! Version not provided or version doesn't match regexp" >&2 | ||
| exit 1 | ||
| fi | ||
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| if ! curl -Ss --range 0-1 ${SERVER_BINARY_TAR_URL} >&/dev/null; then | ||
| echo "!!! Can't find release at ${SERVER_BINARY_TAR_URL}" >&2 | ||
| exit 1 | ||
| fi | ||
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| echo "== Release ${version} validated ==" | ||
| } | ||
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| master_upgrade=true | ||
| node_upgrade=true | ||
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| while getopts ":MNh" opt; do | ||
| case ${opt} in | ||
| M) | ||
| node_upgrade=false | ||
| ;; | ||
| N) | ||
| master_upgrade=false | ||
| ;; | ||
| h) | ||
| usage | ||
| exit 0 | ||
| ;; | ||
| \?) | ||
| echo "Invalid option: -$OPTARG" >&2 | ||
| usage | ||
| exit 1 | ||
| ;; | ||
| esac | ||
| done | ||
| shift $((OPTIND-1)) | ||
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| if [[ $# -lt 1 ]]; then | ||
| usage | ||
| exit 1 | ||
| fi | ||
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| if [[ "${master_upgrade}" == "false" ]] && [[ "${node_upgrade}" == "false" ]]; then | ||
| echo "Can't specify both -M and -N" >&2 | ||
| exit 1 | ||
| fi | ||
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| tars_from_version ${1} | ||
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| if [[ "${master_upgrade}" == "true" ]]; then | ||
| upgrade-master | ||
| fi | ||
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| if [[ "${node_upgrade}" == "true" ]]; then | ||
| upgrade-nodes | ||
| fi | ||
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| "${KUBE_ROOT}/cluster/validate-cluster.sh" |
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