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title: Docker Installation description: OLake Installation via Docker sidebar_position: 4

Docker Installation

Refer here to install OLake.

Refer here to build mongodb replicaset.

Docker Commands & Flags

The two primary commands you’ll use are discover and sync, which both run inside the OLake Docker container. Below is a quick reference table:

Command	Description
discover	Scans the database (e.g., MongoDB) to generate streams.json.
sync	Runs initial snapshot and/or CDC-based replication.

Common Flags

Flag	Example	Description
--config	--config /mnt/config/source.json	Path to the MongoDB (or other DB) connection config.
--catalog	--catalog /mnt/config/streams.json	Path to the Streams File (list of tables/collections to replicate).
--destination	--destination /mnt/config/destination.json	Path to the destination configuration (local or S3).
--state	--state /mnt/config/state.json	Path to a file with saved offsets or resume tokens.

Remember: The -v (volume) flag is crucial for mounting your local OLAKE_DIRECTORY into /mnt/config within the container.