Backup and restore MongoDB running in a Docker container

mongoconsole.sh

#!/bin/bash

usage() {
    echo "Usage $0 -c mongo_docker_container_name"
}

while [[ $# > 1 ]]
do
key="$1"

case $key in
    -c|--container)
        CONTAINERNAME="$2"
        shift # past argument
        ;;
    *)
    	usage
	exit 1
    	;;
esac
shift # past argument or value
done

if [ -z "${CONTAINERNAME}" ]; then
    usage
    exit 1
fi

# -i 	 interactive
# -t 	 open TTY
# --rm 	 remove container after use
# --name name of our temporary container
# --link map server container to hostname within client container
# mongo	 use official mongo image
#        command line to run:
# mongo --host <hostname>
docker run -it --rm --name mongoconsole --link ${CONTAINERNAME}:${CONTAINERNAME} mongo mongo --host ${CONTAINERNAME}

mongodump.sh

#!/bin/bash

usage() {
    echo "Usage $0 -c mongo_docker_container_name -db db_name"
}

while [[ $# > 1 ]]
do
key="$1"

case $key in
    -db|--database)
        DBNAME="$2"
        shift # past argument
        ;;
    -c|--container)
        CONTAINERNAME="$2"
        shift # past argument
        ;;
    *)
    	usage
	exit 1
    	;;
esac
shift # past argument or value
done

if [ -z "${DBNAME}" -o -z "${CONTAINERNAME}" ]; then
    usage
    exit 1
fi

docker run -it --name mongodump --link ${CONTAINERNAME}:${CONTAINERNAME} mongo mongodump --db ${DBNAME} --host ${CONTAINERNAME}
docker cp mongodump:dump ./mongodump-$(date --iso-8601)
if [ $? -ne 0 ]; then
    echo "MongoDB did not succeed taking a backup. Did you specify the correct database name?"
fi
# Clean up container
docker rm mongodump

mongorestore.sh

#!/bin/bash
# Use > 1 to consume two arguments per pass in the loop (e.g. each
# argument has a corresponding value to go with it).
# Use > 0 to consume one or more arguments per pass in the loop (e.g.
# some arguments don't have a corresponding value to go with it)

usage() {
    echo "Usage $0 -d /mongodump/dir -c mongo_docker_container_name"
}

while [[ $# > 1 ]]
do
key="$1"

case $key in
    -d|--dump)
        DUMPDIR="$2"
        shift # past argument
        ;;
    -c|--container)
        CONTAINERNAME="$2"
        shift # past argument
        ;;
    *)
    	usage
	exit 1
    	;;
esac
shift # past argument or value
done

if [ -z "${DUMPDIR}" -o -z "${CONTAINERNAME}" ]; then
    usage
    exit 1
fi

echo "Attempting to restore mongodb dump at ${DUMPDIR} into container ${CONTAINERNAME}"
read -r -p "Is this what you want? [y/N] " response
case $response in
    [yY][eE][sS]|[yY])
	docker run -it --rm --name mongorestore -v ${DUMPDIR}:/var/dump --link ${CONTAINERNAME}:${CONTAINERNAME} mongo mongorestore --host ${CONTAINERNAME} /var/dump
        ;;
    *)
        echo "Nevermind then"
        ;;
esac

the restore script needed a little tweaking on our environment to accomodate a separate Docker network for the MongoDB instance and also because since Mongo 3.0 you have to pass the --db flag to mongorestore. Updated script is:

#!/bin/bash
# Use > 1 to consume two arguments per pass in the loop (e.g. each
# argument has a corresponding value to go with it).
# Use > 0 to consume one or more arguments per pass in the loop (e.g.
# some arguments don't have a corresponding value to go with it)

usage() {
    echo "Usage $0 -d /mongodump/dir -c mongo_docker_container_name -n network_name -D dest_database"
}

while [[ $# > 1 ]]
do
key="$1"

case $key in
    -d|--dump)
        DUMPDIR="$2"
        shift # past argument
        ;;
    -c|--container)
        CONTAINERNAME="$2"
        shift # past argument
        ;;
    -n|--network)
        NETWORK="$2"
        shift # past argument
        ;;
    -D|--database)
        DATABASE="$2"
        shift # past argument
        ;;
    *)
    	usage
	exit 1
    	;;
esac
shift # past argument or value
done

if [ -z "${DUMPDIR}" -o -z "${CONTAINERNAME}" ]; then
    usage
    exit 1
fi

echo "Attempting to restore mongodb dump at ${DUMPDIR} into container ${CONTAINERNAME}"
read -r -p "Is this what you want? [y/N] " response
case $response in
    [yY][eE][sS]|[yY])
	docker run -it --rm --name mongorestore -v ${DUMPDIR}:/var/dump --link ${CONTAINERNAME}:${CONTAINERNAME} --network ${NETWORK} mongo mongorestore --host ${CONTAINERNAME} --db ${DATABASE} /var/dump
        ;;
    *)
        echo "Nevermind then"
        ;;
esac