57 lines
2.3 KiB
Bash
57 lines
2.3 KiB
Bash
#!/bin/bash
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#
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# Copyright (c) 2016 Wind River Systems, Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# Sample upgrade migration script. Important notes:
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# - The script should exit 0 on success and exit non-0 on fail. Note that
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# failing will result in the upgrade of controller-1 failing, so don't fail
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# unless it is a real failure.
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# - Your logic should only check the FROM_RELEASE to determine if migration is
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# required. Checking the TO_RELEASE is dangerous because we do not know
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# the exact value the TO_RELEASE will hold until we reach final compile.
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# The TO_RELEASE is here for logging reasons and in case of some unexpected
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# emergency where we may need it.
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# - The script will be passed one of the following actions:
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# start: Prepare for upgrade on release N side. Called during
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# "system upgrade-start".
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# migrate: Perform data migration on release N+1 side. Called while
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# controller-1 is performing its upgrade. At this point in the
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# upgrade of controller-1, the databases have been migrated from
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# release N to release N+1 (data migration scripts have been
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# run). Postgres is running and is using the release N+1
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# databases. The platform filesystem is mounted at /opt/platform
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# and has data populated for both release N and release N+1.
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# - You can do the migration work here in a bash script. There are other
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# options:
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# - Invoke another binary from this script to do the migration work.
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# - Instead of using a bash script, create a symlink in this directory, to
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# a binary of your choice.
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# - The migration scripts are executed in alphabetical order. Please prefix
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# your script name with a two digit number (e.g. 01-my-script-name.sh). The
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# order of migrations usually shouldn't matter, so pick an unused number
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# near the middle of the range.
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NAME=$(basename $0)
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# The migration scripts are passed these parameters:
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FROM_RELEASE=$1
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TO_RELEASE=$2
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ACTION=$3
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# This will log to /var/log/platform.log
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function log {
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logger -p local1.info $1
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}
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log "$NAME: performing sample migration from release $FROM_RELEASE to $TO_RELEASE with action $ACTION"
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if [ "$FROM_RELEASE" == "17.06" ] && [ "$ACTION" == "migrate" ]; then
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log "Sample migration from release $FROM_RELEASE"
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fi
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exit 0
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