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NGINX S3 Gateway

Introduction

This project provides a working configuration of NGINX configured to act as an authenticating and caching gateway for to AWS S3 or another S3 compatible service. This allows you to proxy a private S3 bucket without requiring users to authenticate to it. Within the proxy layer, additional functionality can be configured such as:

All such functionality can be enabled within a standard NGINX configuration because this project is nothing other than NGINX with additional configuration that allows for proxying S3. It can be used as-is if the predefined configuration is sufficient, or it can serve as a base example for a more customized configuration.

If the predefined configuration does not meet your needs, it is best to borrow from the patterns in this project and build your own configuration. For example, if you want to enable SSL/TLS and compression in your NGINX S3 gateway configuration, you will need to look at other documentation because this project does not enable those features of NGINX.

Usage

This project can be run as a stand-alone container or as a Systemd service. Both modes use the same NGINX configuration and are functionally equal in terms features. However, in the case of running as a Systemd service, other services can be configured that additional functionality such as certbot for Let's Encrypt support.

Getting Started

Refer to the Getting Started Guide for how to build and run the gateway.

Directory Structure and File Descriptions

common/                          contains files used by both NGINX OSS and Plus configurations
  etc/nginx/include/
    awscredentials.js            common library to read and write credentials
    awssig2.js                   common library to build AWS signature 2
    awssig4.js                   common library to build AWS signature 4 and get a session token
    s3gateway.js                 common library to integrate the s3 storage from NGINX OSS and Plus
    utils.js                     common library to be reused by all of NJS codebases
deployments/                     contains files used for deployment technologies such as
                                 CloudFormation
docs/                            contains documentation about the project
examples/                        contains additional `Dockerfile` examples that extend the base
                                 configuration
jsdoc                            JSDoc configuration files
oss/                             contains files used solely in NGINX OSS configurations
plus/                            contains files used solely in NGINX Plus configurations
test/                            contains automated tests for validang that the examples work
Dockerfile.oss                   Dockerfile that configures NGINX OSS to act as a S3 gateway
Dockerfile.plus                  Dockerfile that builds a NGINX Plus instance that is configured
                                 equivelently to NGINX OSS - instance is configured to act as a
                                 S3 gateway with NGINX Plus additional features enabled
Dockerfile.buildkit.plus         Dockerfile with the same configuration as Dockerfile.plus, but
                                 with support for hiding secrets using Docker's Buildkit
Dockerfile.latest-njs            Dockerfile that inherits from the last build of the gateway and
                                 then builds and installs the latest version of njs from source
Dockerfile.unprivileged          Dockerfiles that inherits from the last build of the gateway and
                                 makes the necessary modifications to allow running the container
                                 as a non root, unprivileged user.
package.json                     Node.js package file used only for generating JSDoc
settings.example                 Docker env file example
standalone_ubuntu_oss_install.sh install script that will install the gateway as a Systemd service
test.sh                          test launcher

Development

Refer to the Development Guide for more information about extending or testing the gateway.

Contributing

Please see the contributing guide for guidelines on how to best contribute to this project.

License

Apache License, Version 2.0

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