Solution 2: Modify MongoDB Configuration to Use a Different Path

We can configure MongoDB to use a different path for the data directory by modifying the MongoDB configuration file or using the command-line option.

1. Edit the Configuration File: Open or create the MongoDB configuration file (mongod.conf):

storage:
  dbPath: /path/to/your/data/db

Choose a suitable path that is writable, such as /usr/local/var/mongodb or any other directory you have write access to.

2. Create the Directory: Ensure the directory exists and has the correct permissions:

sudo mkdir -p /usr/local/var/mongodb
sudo chown -R $(whoami) /usr/local/var/mongodb

Explanation:These commands create a directory /usr/local/var/mongodb and then change its ownership recursively to the current user (whoami) using sudo

3. Start MongoDB with the Configuration File: Use the –config option to start MongoDB with the specified configuration file

mongod --config /path/to/mongod.conf

When configuring MongoDB on macOS, users may encounter a “Read-only file system” error when attempting to create the default data directory /data/db using the mkdir command. This error is caused by the System Integrity Protection (SIP) feature in macOS, which protects the root directory / from unauthorized changes.

In this article, We will learn about How to fix the Read-only file system when attempting mkdir /data/db on Mac by understanding various approaches in detail.