c225d13abc
- use bash-static and avoid dragging in all of debian-base - use distroless as the base image - the shell script needs a `cp` utility, add a go based one for just files (no support for directories!) - Rework the calls to `mv` and recursive `cp` in the code - we don't need to support windows in this container image - the test case was slightly off as it was assuming that the old directory was copied into the new directory, but the desired functionality is that all files in the old directory should be in the new directory. Signed-off-by: Davanum Srinivas <davanum@gmail.com>
108 lines
3.8 KiB
Bash
Executable File
108 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: 'etcd3')
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# TARGET_VERSION - etcd release to be used (supported: '3.0.17', '3.1.12',
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# '3.2.24', "3.3.17", "3.4.7")
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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 "${DATA_DIRECTORY}/version.txt" file (if the file doesn't
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# exist, we default it to "3.0.17/etcd2".
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#
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# The update workflow support the following upgrade steps:
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# - 3.0.17/etcd3 -> 3.1.12/etcd3
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# - 3.1.12/etcd3 -> 3.2.24/etcd3
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# - 3.2.24/etcd3 -> 3.3.17/etcd3
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# - 3.3.17/etcd3 -> 3.4.7/etcd3
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#
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# NOTE: The releases supported in this script has to match release binaries
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# present in the etcd image (to make this script work correctly).
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#
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# Based on the current etcd version and storage format we detect what
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# upgrade step from this should be done to get reach target configuration
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set -o errexit
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set -o nounset
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# NOTE: BUNDLED_VERSION has to match release binaries present in the
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# etcd image (to make this script work correctly).
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BUNDLED_VERSIONS="3.0.17, 3.1.12, 3.2.24, 3.3.17, 3.4.7"
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# shellcheck disable=SC2039
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ETCD_NAME="${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 [ "${DO_NOT_MOVE_BINARIES:-}" != "true" ]; then
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/bin/cp "/usr/local/bin/etcd-${TARGET_VERSION}" "/usr/local/bin/etcd"
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/bin/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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