---
title: "Connection Configuration for MongoDB"
slug: "connection-configuration-mongodb"
updated: 2024-08-15T09:34:21Z
published: 2024-08-15T09:34:21Z
canonical: "documents.trocco.io/connection-configuration-mongodb"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://documents.trocco.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Connection Configuration for MongoDB

## summary

This is the help page for setting up Connection Configuration for MongoDB.

## entry

| item name | indispensable | Contents |
| --- | --- | --- |
| Name | Yes | Enter the name of the Connection Configuration to be used inside TROCCO. |
| memo | No | Enter a note of Connection Configuration to be used inside TROCCO. |
| Connection type | No | Please select from the followingstandardDNS Seed List(SRV) If you are using MongoDB Atlas, please select **DNS Seed List (SRV)**. For more information on connection types, please refer to [the official documentation - Connection String URI Format](https://www.mongodb.com/docs/manual/reference/connection-string/). |
| host | Yes | Enter a host name or IP address. |
| destination port | Yes | Enter the port number of the database to connect to. The default port number for MongoDB is `27017`. |
| Authentication method | No | Please select from the following - SCRAM_SHA_1 - MONGODB_CR - Based on server version - Version 3.0 or higher: Use SCRAM_SHA_1. - For versions less than 3.0: Use MONGODB_CR. For more information on authentication methods, please refer to [the official documentation - Authentication.](https://www.mongodb.com/docs/ruby-driver/master/reference/authentication/) |
| user | No | Please enter a user name for authentication. |
| (computer) password | No | Please enter the password for authentication. |
| Authentication database | No | Please enter the authentication database (authSource). If not specified, it will be `admin.` |
| Read settings | Yes | Please choose one of the options. The default is `PRIMARY`. See "About Read Preferences" below for more information about read preferences. |

              MongoDB authentication settings

              

MongoDB can be connected to without user authentication settings. However, TROCCO recommends that you set up user authentication.

## About Read Preferences

For more information on read preferences, please refer to the [official documentation - Read Preference](https://www.mongodb.com/docs/manual/core/read-preference/).

| Selection | Content |
| --- | --- |
| primary | (default) Routes all read operations to the primary node of the current replica set. |
| primaryPreferred | Route all read operations to the primary node. If the primary is unavailable, such as during automatic failover, read requests are routed to the secondary node instead. |
| secondary | Routes all read operations to one of the secondary nodes. |
| secondaryPreferred | Routes all read operations to one of the available secondary nodes. If the secondary is not available, it is routed to the primary instead. |
| nearest | The node with the lowest network latency is selected for routing. Primary and secondary are treated equally. |