Storage driver options in Docker - Mini Project: Build & Apply

Configure Docker Storage Driver Options

📖 Scenario: You are setting up Docker on a new server. To optimize performance and compatibility, you need to configure Docker's storage driver options.

🎯 Goal: Learn how to create a Docker daemon configuration file with specific storage driver options and verify the configuration.

📋 What You'll Learn

Create a Docker daemon configuration file with a storage driver option

Add a storage driver option to the configuration

Apply the configuration by restarting Docker

Verify the storage driver setting using a Docker command

💡 Why This Matters

🌍 Real World

Configuring Docker storage drivers is important for optimizing container performance and compatibility on different Linux systems.

💼 Career

DevOps engineers often configure Docker daemon settings to meet application and infrastructure requirements.

1

Create Docker daemon configuration file

Create a file called /etc/docker/daemon.json with the following JSON content exactly: {}

Docker

# Create the file /etc/docker/daemon.json with empty JSON braces
# Your code here

Need a hint?

The Docker daemon configuration file uses JSON format. Start with empty braces {}.

2

Add storage driver option

Add the storage driver option "storage-driver": "overlay2" inside the /etc/docker/daemon.json file, so the file content is exactly {"storage-driver": "overlay2"}

Docker

{}
# Add the storage driver option inside the JSON file
# Your code here

Need a hint?

Remember to keep the JSON format valid with curly braces and quotes.

3

Restart Docker to apply configuration

Write the command to restart the Docker service using sudo systemctl restart docker to apply the new storage driver configuration.

Docker

{"storage-driver": "overlay2"}
# Restart Docker service to apply changes
# Your code here

Need a hint?

Use sudo systemctl restart docker to restart the Docker daemon.

4

Verify Docker storage driver

Write the command docker info --format '{{.Driver}}' to display the current Docker storage driver in use.

Docker

sudo systemctl restart docker
# Verify the storage driver with docker info
# Your code here

Need a hint?

The command docker info --format '{{.Driver}}' shows the active storage driver.