Mounting an S3 bucket on an AWS EC2 instance is a great way to access your cloud storage directly from your instance. You can do this using the AWS CLI command, `aws s3 sync`, to synchronize your local directory with your S3 bucket.
To get started, you'll need to install the AWS CLI on your EC2 instance. This can be done using the package manager, such as apt-get on Ubuntu, or yum on Amazon Linux.
The AWS CLI will allow you to interact with your S3 bucket and perform operations like listing objects, uploading files, and deleting objects. You can also use the `aws s3 ls` command to list the objects in your S3 bucket.
By mounting your S3 bucket on your EC2 instance, you'll have fast and efficient access to your cloud storage, making it easier to work with large files and datasets.
Setting Up EC2 Instance
To set up your EC2 instance, you'll need to make sure you have the necessary permissions to work with AWS resources. This is a crucial step before proceeding.
Before you can mount your S3 bucket, you'll need to install the required software on your Linux EC2 instance. This is typically done before attempting to configure s3fs.
You'll also need to create a file named .passwd-s3fs in your home directory. This file will store your IAM credentials, specifically your access key and secret key.
This file should be created with the following command: echo “YOUR_ACCESS_KEY_ID:YOUR_SECRET_ACCESS_KEY” > ~/.passwd-s3fs. Make sure to replace YOUR_ACCESS_KEY_ID and YOUR_SECRET_ACCESS_KEY with your actual IAM user’s access key and secret key.
After creating the .passwd-s3fs file, you'll need to give it the correct permissions using the command chmod 600 ~/.passwd-s3fs.
File System Scripting
Mounting your S3 bucket is just the beginning. You'll also need to consider how to interact with it like a local drive. There are a few options for scripting file system interactions, including S3FS-FUSE, ObjectiveFS, and RioFS.
S3FS-FUSE is a popular choice, supporting major Linux distributions and MacOS, and even caching files locally to improve performance. ObjectiveFS offers a full POSIX-compliant file system interface, making it a good option for applications that require precise file management.
Here's a quick rundown of the key features of each option:
If you're looking for a lightweight option, RioFS might be a good choice, but keep in mind its limitations, including no support for appending to files or renaming folders.
File System Scripting Options
If you're looking to mount an Amazon S3 file system on your Linux-based system, you have a few options to choose from.
S3FS-FUSE is a free and open-source FUSE plugin that supports major Linux distributions and MacOS. It's easy to use and takes care of caching files locally to improve performance.
ObjectiveFS is a commercial FUSE plugin that supports Amazon S3 and Google Cloud Storage backends. It claims to offer a full POSIX-compliant file system interface.
RioFS is a lightweight utility written in C, but it has some limitations. It doesn't support appending to files, doesn't support a fully POSIX-compliant file system interface, and can't rename folders.
Here are some key features of each option:
Your kernel must support FUSE to use any of these plugins, and your Virtual Private Server (VPS) may not have FUSE support compiled into its kernel.
Amazon S3 Configuration
To configure Amazon S3, you'll need to set up your credentials correctly. This involves creating a file called `~/.passwd-s3fs` with your access key and secret key, separated by a colon.
The file should look something like this: `ACCESS_KEY:SECRET_KEY`. Make sure to replace `ACCESS_KEY` and `SECRET_KEY` with your actual Amazon S3 credentials.
You'll also need to set the right access permission for the `passwd-s3fs` file by running the command `chmod 600 .passwd-s3fs`.
Step 2: Configuration
To set up S3FS, you'll need to create a file called ~/.passwd-s3fs and add your Amazon S3 access key and secret key to it.
The file should be formatted like this: echo ACCESS_KEY:SECRET_KEY > ~/.passwd-s3fs. This will create the file with your credentials.
You'll also need to set the right access permission for the passwd-s3fs file to 600 using the command chmod 600 .passwd-s3fs.
This will ensure that the file is secure and can be accessed by the S3FS program.
Main Requirements
To get started with Amazon S3 configuration, you'll need to meet the main requirements. These include having an Amazon Web Service account, which is the foundation of your setup.
You'll also need to obtain the AWS ACCESS KEY ID and AWS SECRET ACCESS KEY from your Amazon Web Service account, found under My Security Credentials.
A single object, such as an image, video, or music file, needs to be placed in an S3 bucket on Amazon Web Service. This object can be in any format.
Here are the main requirements summarized:
- Amazon Web Service Account
- AWS ACCESS KEY ID
- AWS SECRET ACCESS KEY
- 1 Object in any format (e.g. image, video, music)
Using Amazon S3
You can mount an Amazon S3 bucket as a file system, which means you can use your existing tools and applications to interact with the S3 bucket and perform read/write operations on files and folders. This enables multiple EC2 instances to concurrently mount and access data in Amazon S3, just like a shared file system.
Mounting an S3 bucket as a drive on an application server can make creating a distributed file store extremely easy. For example, you can create a photo upload application that stores data on a fixed path in a file system and then mount an S3 bucket on that fixed path.
To mount an S3 bucket using S3FS, you'll need to use the following command: `s3fs -o passwd_file= -o umask=022 -o allow_other`. This command specifies the location of the password file, sets the permissions for the mounted files and directories, and allows other users to access the mounted bucket.
Mounting an S3 bucket as a file system also enables legacy applications to scale in the cloud without requiring source code changes. This is because the application can be configured to use a local path where the S3 bucket is mounted.
Some popular methods for mounting an S3 bucket include using S3FS, Cloud Volumes ONTAP, and Databricks mounts. Each of these methods has its own advantages and use cases.
Here are some key benefits of mounting an S3 bucket as a file system:
- Enables multiple EC2 instances to concurrently mount and access data in Amazon S3
- Makes creating a distributed file store extremely easy
- Enables legacy applications to scale in the cloud without requiring source code changes
- Allows other users to access the mounted bucket
- Enables data tiering to Amazon S3 for cost savings
By mounting an S3 bucket as a file system, you can take advantage of these benefits and more.
Security and Encryption
Security and Encryption is a top priority when working with S3 buckets. Databricks supports server-side encryption, which is a secure way to protect your data.
You can use Amazon S3-managed encryption keys (SSE-S3) or AWS KMS–managed encryption keys (SSE-KMS) to encrypt your data. This adds an extra layer of security to your S3 bucket.
Create IAM Credentials
To create IAM credentials, start by searching for IAM in the AWS console and clicking on create users. You'll then need to attach a policy that grants S3 read/write permissions to the bucket or desired objects.
Attach a policy for the user, in this case, selecting the S3 full access policy. I recommend saving the policy name, which is "demos3policy", for future reference.
Enter a description for the key, and the access key and secret access key will be displayed. Make sure to save this information separately for later use.
To access the S3 bucket, you'll need to create an IAM user and attach a policy that grants the necessary permissions.
Encrypt Data
Encrypting your data is a crucial step in protecting it from unauthorized access. Databricks supports encrypting data using server-side encryption.
You have two options for server-side encryption: Amazon S3-managed encryption keys (SSE-S3) and AWS KMS–managed encryption keys (SSE-KMS).
Both of these options provide a high level of security, but they work in slightly different ways. SSE-S3 uses keys managed by Amazon S3, while SSE-KMS uses keys managed by AWS Key Management Service (KMS).
Databricks supports encrypting data when writing files in S3 through DBFS, making it a seamless process. This feature is especially useful for large-scale data storage and processing.
Databricks Cloud Storage
Databricks mounts create a link between a workspace and cloud object storage, enabling you to interact with cloud object storage using familiar file paths relative to the Databricks file system.
Mounts store the location of the cloud object storage, driver specifications to connect to the storage account or container, and security credentials required to access the data under the /mnt directory.
To avoid errors, never modify a mount point while other jobs are reading or writing to it.
You should run dbutils.fs.refreshMounts() on all other running clusters after modifying a mount to propagate any mount updates.
Here are the key components of a mount:
- Location of the cloud object storage.
- Driver specifications to connect to the storage account or container.
- Security credentials required to access the data.
Frequently Asked Questions
What is Mountpoint for S3?
Mountpoint for S3 is an open-source tool that allows you to access Amazon S3 buckets as a local file system, enabling high-throughput performance. It translates local file system API calls into REST API calls on S3 objects.
Sources
- https://bluexp.netapp.com/blog/amazon-s3-as-a-file-system
- https://www.bdrsuite.com/blog/how-to-mount-s3-bucket-in-aws-ec2-using-s3fs/
- https://www.eternalsoftsolutions.com/blog/how-to-mount-s3-bucket-on-ec2/
- https://blog.jineshkumar.com/s3-bucket-is-mounted-using-mountpoint-for-amazon-s3
- https://docs.databricks.com/en/dbfs/mounts.html
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