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106 lines
3.8 KiB
Bash
Executable File
106 lines
3.8 KiB
Bash
Executable File
#!/bin/sh
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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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# NOTES
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# This script performs etcd upgrade based on the following environmental
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# variables:
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# TARGET_STORAGE - API of etcd to be used (supported: 'etcd2', 'etcd3')
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# TARGET_VERSION - etcd release to be used (supported: '2.2.1', '2.3.7', '3.0.17', '3.1.12', '3.2.18')
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# DATA_DIRECTORY - directory with etcd data
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#
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# The current etcd version and storage format is detected based on the
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# contents of "${DATA_DIRECTORY}/version.txt" file (if the file doesn't
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# exist, we default it to "2.2.1/etcd2".
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#
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# The update workflow support the following upgrade steps:
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# - 2.2.1/etcd2 -> 2.3.7/etcd2
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# - 2.3.7/etcd2 -> 3.0.17/etcd2
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# - 3.0.17/etcd3 -> 3.1.12/etcd3
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# - 3.1.12/etcd3 -> 3.2.18/etcd3
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#
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# NOTE: The releases supported in this script has to match release binaries
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# present in the etcd image (to make this script work correctly).
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#
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# Based on the current etcd version and storage format we detect what
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# upgrade step from this should be done to get reach target configuration
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set -o errexit
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set -o nounset
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# NOTE: BUNDLED_VERSION has to match release binaries present in the
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# etcd image (to make this script work correctly).
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BUNDLED_VERSIONS="2.2.1, 2.3.7, 3.0.17, 3.1.12, 3.2.18"
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ETCD_NAME="${ETCD_NAME:-etcd-$(hostname)}"
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if [ -z "${DATA_DIRECTORY:-}" ]; then
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echo "DATA_DIRECTORY variable unset - unexpected failure"
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exit 1
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fi
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case "${DATA_DIRECTORY}" in
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*event*)
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ETCD_PEER_PORT=2381
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ETCD_CLIENT_PORT=18631
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;;
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*)
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ETCD_PEER_PORT=2380
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ETCD_CLIENT_PORT=18629
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;;
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esac
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if [ -z "${INITIAL_CLUSTER:-}" ]; then
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echo "Warn: INITIAL_CLUSTER variable unset - defaulting to ${ETCD_NAME}=http://localhost:${ETCD_PEER_PORT}"
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INITIAL_CLUSTER="${ETCD_NAME}=http://localhost:${ETCD_PEER_PORT}"
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fi
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if [ -z "${LISTEN_PEER_URLS:-}" ]; then
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echo "Warn: LISTEN_PEER_URLS variable unset - defaulting to http://localhost:${ETCD_PEER_PORT}"
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LISTEN_PEER_URLS="http://localhost:${ETCD_PEER_PORT}"
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fi
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if [ -z "${INITIAL_ADVERTISE_PEER_URLS:-}" ]; then
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echo "Warn: INITIAL_ADVERTISE_PEER_URLS variable unset - defaulting to http://localhost:${ETCD_PEER_PORT}"
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INITIAL_ADVERTISE_PEER_URLS="http://localhost:${ETCD_PEER_PORT}"
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fi
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if [ -z "${TARGET_VERSION:-}" ]; then
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echo "TARGET_VERSION variable unset - unexpected failure"
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exit 1
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fi
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if [ -z "${TARGET_STORAGE:-}" ]; then
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echo "TARGET_STORAGE variable unset - unexpected failure"
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exit 1
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fi
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ETCD_DATA_PREFIX="${ETCD_DATA_PREFIX:-/registry}"
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ETCD_CREDS="${ETCD_CREDS:-}"
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# Correctly support upgrade and rollback to non-default version.
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if [ "${DO_NOT_MOVE_BINARIES:-}" != "true" ]; then
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cp "/usr/local/bin/etcd-${TARGET_VERSION}" "/usr/local/bin/etcd"
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cp "/usr/local/bin/etcdctl-${TARGET_VERSION}" "/usr/local/bin/etcdctl"
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fi
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/usr/local/bin/migrate \
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--name "${ETCD_NAME}" \
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--port "${ETCD_CLIENT_PORT}" \
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--listen-peer-urls "${LISTEN_PEER_URLS}" \
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--initial-advertise-peer-urls "${INITIAL_ADVERTISE_PEER_URLS}" \
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--data-dir "${DATA_DIRECTORY}" \
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--bundled-versions "${BUNDLED_VERSIONS}" \
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--initial-cluster "${INITIAL_CLUSTER}" \
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--target-version "${TARGET_VERSION}" \
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--target-storage "${TARGET_STORAGE}" \
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--etcd-data-prefix "${ETCD_DATA_PREFIX}" \
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--ttl-keys-directory "${TTL_KEYS_DIRECTORY:-${ETCD_DATA_PREFIX}/events}" \
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--etcd-server-extra-args "${ETCD_CREDS}"
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