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Backup before migration #36218

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Nov 7, 2016
Merged

Backup before migration #36218

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12 changes: 12 additions & 0 deletions cluster/images/etcd/migrate-if-needed.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -145,6 +145,18 @@ stop_etcd() {
ATTACHLEASE="${ATTACHLEASE:-/usr/local/bin/attachlease}"
ROLLBACK="${ROLLBACK:-/usr/local/bin/rollback}"

# If we are upgrading from 2.2.1 and this is the first try for upgrade,
# do the backup to allow restoring from it in case of failed upgrade.
BACKUP_DIR="${DATA_DIRECTORY}/migration-backup"
if [ "${CURRENT_VERSION}" = "2.2.1" -a ! -d "${BACKUP_DIR}" ]; then
echo "Backup etcd before starting migration"
mkdir ${BACKUP_DIR}
ETCDCTL_CMD="/usr/local/bin/etcdctl-2.2.1"
ETCDCTL_API=2 ${ETCDCTL_CMD} backup --data-dir=${DATA_DIRECTORY} \
--backup-dir=${BACKUP_DIR}
echo "Backup done in ${BACKUP_DIR}"
fi

# Do the roll-forward migration if needed.
# The migration goes as following:
# 1. for all versions starting one after the current version of etcd
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