The mongo-connector project originated as a MongoDB mongo-labs project and is now community-maintained under the custody of YouGov, Plc.
For complete documentation, check out the Mongo Connector Wiki.
mongo-connector creates a pipeline from a MongoDB cluster to one or more target systems, such as Solr, Elasticsearch, or another MongoDB cluster. It synchronizes data in MongoDB to the target then tails the MongoDB oplog, keeping up with operations in MongoDB in real-time. Detailed documentation is available on the wiki.
mongo-connector supports Python 3.4+ and MongoDB versions 3.4 and 3.6.
To install mongo-connector with the MongoDB doc manager suitable for replicating data to MongoDB, use pip:
pip install mongo-connector
The install command can be customized to include the Doc Managers and any extra dependencies for the target system.
|Target System||Install Command|
|Amazon Elasticsearch 1.x Service||
|Amazon Elasticsearch 2.x Service||
You may have to run
on where you're installing mongo-connector and what privileges you have.
System V Service
Mongo Connector provides support for installing and uninstalling itself as a service daemon under System V Init on Linux. Following install of the package, install or uninstall using the following command:
$ python -m mongo_connector.service.system-v [un]install
You can also install the development version of mongo-connector manually:
git clone https://github.com/yougov/mongo-connector.git pip install ./mongo-connector
mongo-connector replicates operations from the MongoDB oplog, so a replica set must be running before startup. For development purposes, you may find it convenient to run a one-node replica set (note that this is not recommended for production):
mongod --replSet myDevReplSet
To initialize your server as a replica set, run the following command in the mongo shell:
Once the replica set is running, you may start mongo-connector. The simplest invocation resembles the following:
mongo-connector -m <mongodb server hostname>:<replica set port> \ -t <replication endpoint URL, e.g. http://localhost:8983/solr> \ -d <name of doc manager, e.g., solr_doc_manager>
mongo-connector has many other options besides those demonstrated above.
To get a full listing with descriptions, try
You can also use mongo-connector with a configuration file.
If you want to jump-start into using mongo-connector with a another particular system, check out:
Elasticsearch 1.x: https://github.com/yougov/elastic-doc-manager
Elasticsearch 2.x and 5.x: https://github.com/yougov/elastic2-doc-manager
The MongoDB doc manager comes packaged with the mongo-connector project.
Having trouble with installation? Have a question about Mongo Connector? Your question or problem may be answered in the FAQ or in the wiki. If you can't find the answer to your question or problem there, feel free to open an issue on Mongo Connector's Github page.