MongoDBをJSON形式でエクスポート

export_mongodb.sh

#!/bin/bash

SERVICE_NAME=mongodb

if [ ! $1 ]; then
        echo " Example of use: $0 database_name [dir_to_store]"
        exit 1
fi
db=$1
out_dir=$2
if [ ! $out_dir ]; then
        out_dir="./"
else
        mkdir -p $out_dir
fi

tmp_file="fadlfhsdofheinwvw.js"
echo "print('_ ' + db.getCollectionNames())" > $tmp_file
cols=`mongo --host $SERVICE_NAME $db $tmp_file | grep '_' | awk '{print $2}' | tr ',' ' '`
for c in $cols
do
    mongoexport --host $SERVICE_NAME -d $db -c $c -o "$out_dir/${db}_${c}.json"
done
rm $tmp_file

run.sh

# ./backup に export_mongo.sh を配置してから実行
$ docker compose run --rm -it -v `pwd`/backup:/dst mongodb sh

# cd /dst
# ./export_mongo.sh <database_name>