Mongo-Initializr

Docker image for building MongoDB databases using the Mongo-Initializr scripts.

Docker image

By default the database is initialized on startup of the container using the Docker ENTRYPOINT which is executing the Mongo-Initializr script. The behavior of this script can be customized based on the MI_*-variables.

Variables

• MONGO_INITDB_ROOT_USERNAME, MONGO_INITDB_ROOT_PASSWORD: Username and password used for initializing and building the database (both default set to aerius).
• MONGO_INITDB_DATABASE: The name of the database to initialize (default set to mongo).
• MI_INPUT_FILE: The file which contains a list of dbdata-files and the corresponding database collection. If set the build and sync are executed.
• MI_NEXUS_BASE_URL, MI_NEXUS_REPOSITORY: The base-url and nexus repository where the dbdata-files are located.
• MI_DATABASE_VERSION: The version of the database, which will be added to the database constants.
• MI_RUN_SCRIPT_FOLDER: The folder there the _run.js file is located. If not set, the runner wil not be executed.
• MI_DUMP_DATABASE: Set to true if a (gzipped) binary export of the database needs to be created.
• MI_INITIALIZE_ON_BUILD: Set to true if the database is going to be initialized during the Docker image build. You need to add RUN /usr/local/bin/docker-entrypoint.sh mongod to you Dockerfile in order to start the initialization during the Docker build.
• MI_SKIP_DBDATA_SYNC: Set to true if the dbdata sync should be skipped.
• MI_SKIP_UNSET_ENVS: Set to true if all the MI_* environment variables should be kept after the docker-entrypoint.sh entrypoint script is runned.
• MI_BIN_FOLDER_CLEANUP: Set to true if the bin-folder should be removed.
• MI_SOURCE_FOLDER_CLEANUP: Set to true if the source-folder should be removed.
• MI_DBDATA_FOLDER_CLEANUP: Set to true if the dbdata-folder should be removed.
• HTTPS_DATA_USERNAME, HTTPS_DATA_PASSWORD: The username and password of the nexus repository used for syncing the dbdata-files.

(Docker) Folders

• MI_BIN_FOLDER (/mi/bin): Folder where you can find the Mongo-Initializr scripts.
• MI_SOURCE_FOLDER (/mi/source): Folder for the database source code.
• MI_DBDATA_FOLDER (/mi/dbdata): Folder for all dbdata files.
• MI_DUMP_FOLDER (/mi/dump): Folder for all database dumps. All dumps in this folder will be restored by the Mongo-Initializr script.

Examples of how to use the aerius-mongo-initializr image

Initialize the example-project database using a Docker run.

docker run \
	--name example-project \
	--volume /projects/example-project/git/example-project/source/:/mi/source \
	--env MI_INPUT_FILE="/mi/source/example-project/src/data/initdb.json" \
	--env MI_RUN_SCRIPT_FOLDER="/mi/source/example-project/src/main" \
	--env MONGO_INITDB_DATABASE=example \
	--env MI_DATABASE_VERSION=0.0.1 \
	--env MI_NEXUS_BASE_URL=https://nexus.example-project.com \
	--env MI_NEXUS_REPOSITORY=dbdata \
	--env HTTPS_DATA_USERNAME=${HTTPS_DATA_USERNAME} \
	--env HTTPS_DATA_PASSWORD=${HTTPS_DATA_PASSWORD} \
	aerius-mongo-initializr:0.1-SNAPSHOT-7.0.6

Initialize the example-project database with local dbdata files using a Docker run.

docker run \
	--name example-project \
	--volume /projects/example-project/git/example-project/source/:/mi/source \
	--volume /projects/example-project/dbdata/:/mi/dbdata \
	--env MI_INPUT_FILE="/mi/source/example-project/src/data/initdb.json" \
	--env MI_RUN_SCRIPT_FOLDER="/mi/source/example-project/src/main" \
	--env MONGO_INITDB_DATABASE=example \
	--env MI_DATABASE_VERSION=0.0.1 \
	--env MI_SKIP_DBDATA_SYNC=true \
	aerius-mongo-initializr:0.1-SNAPSHOT-7.0.6

Dockerfile containing all the information to be able to initialize the example-project database on startup of the container.

#syntax = docker/dockerfile:1
FROM aerius-mongo-initializr:0.1-SNAPSHOT-7.0.6 

ENV MONGO_INITDB_DATABASE=example \
    MONGO_INITDB_ROOT_USERNAME=example \
    MONGO_INITDB_ROOT_PASSWORD=passwd \
    MI_DATABASE_VERSION=0.01 \
    MI_INPUT_FILE="/mi/source/example-project/src/data/initdb.json" \
    MI_RUN_SCRIPT_FOLDER="/mi/source/example-project/src/main" \
    MI_INITIALIZE_ON_BUILD=false \
    MI_NEXUS_BASE_URL="https://nexus.example-project.com" \
    MI_NEXUS_REPOSITORY=dbdata

# Copy all necessary scripts
COPY ./source /mi/source

docker build --tag example-project .

docker run \
    --name example-project \
    --volume ./data:/data/db \
    --publish 27017:27017 \
    --env HTTPS_DATA_USERNAME=user \
    --env HTTPS_DATA_PASSWORD=passwd \
    example-project:latest

Note: the Mongo docker-entrypoint will not initialize the database again if there is a known path in the dbPath folder. See the Mongo docker-entrypoint.

Dockerfile to initialize the example-project database during the Docker build.

#syntax = docker/dockerfile:1
FROM aerius-mongo-initializr:0.1-SNAPSHOT-7.0.6 

ARG MONGO_INITDB_DATABASE=example-project \
	MONGO_INITDB_ROOT_USERNAME=example \
	MONGO_INITDB_ROOT_PASSWORD=passwd \
	MI_DATABASE_VERSION=0.01 \
	MI_INPUT_FILE="/mi/source/example-project/src/data/initdb.json" \
	MI_RUN_SCRIPT_FOLDER="/mi/source/example-project/src/main" \
	MI_INITIALIZE_ON_BUILD=true \
	MI_NEXUS_BASE_URL="https://nexus.example-project.com" \
	MI_NEXUS_REPOSITORY=dbdata \
	HTTPS_DATA_USERNAME \
	HTTPS_DATA_PASSWORD

# Copy all necessary scripts
COPY ./source /mi/source

# Run the docker-entrypoint in order to initialize the database
RUN /usr/local/bin/docker-entrypoint.sh mongod

Image build

There are two scripts for building the Docker images.

• update.sh - Creates the Dockerfile files for the specified Mongo versions.
• build_images.sh - Builds all generated Dockerfile files.