Connect to MongoDB

Create a MongoClient

Connection URI

• mongodb:// Required. A prefix that identifies this as a string in the standard connection format.
• username:password Optional. Authentication credentials. If you include these, the client authenticates the user against the database specified in authSource. For more information about the authSource connection option, see Authentication Mechanisms.
• host[:port] Required. The host and optional port number where MongoDB is running. If you don't include the port number, the driver uses the default port, 27017.
• /defaultauthdb Optional. The authentication database to use if the connection string includes username:password@ authentication credentials but not the authSource option. If you don't include this component, the client authenticates the user against the admin database.
• ?<options> Optional. A query string that specifies connection-specific options as <name>=<value> pairs. See Specify Connection Options for a full description of these options.

MongoClient

from pymongo import MongoClient

uri = "mongodb://localhost:27017/"
client = MongoClient(uri)

Specify Connection Options

uri = "mongodb://<hostname>:<port>/?connectTimeoutMS=60000&tls=true"
client = pymongo.MongoClient(uri)

uri = "mongodb://<hostname>:<port>"
client = pymongo.MongoClient(uri, connectTimeoutMS=60000, tls=True)

Limit Server Execution Time

When you use PyMongo to perform a server operation, you can also limit the amount of time the server has to finish this operation. To do so, specify a client-side operation timeout. The timeout applies all steps needed to complete the operation, including server selection, connection checkout, serialization, and server-side execution

timeout() Method

The timeout you specify applies to all operations inside the with block

with pymongo.timeout(10):
    coll.insert_one({"name": "Yngwie"})
    coll.find_one({"name": "Yngwie"})

timeoutMS Connection Option

client = pymongo.MongoClient("mongodb://<db_username>:<db_password>@<hostname:<port>",
                             timeoutMS=10000)

uri = "mongodb://<db_username>:<db_password>@<hostname:<port>/?timeoutMS=10000"
client = pymongo.MongoClient(uri)