
Overview

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Discourse on AWS by FOSSonCloud is an open-source AWS CloudFormation template that offers an easy-to-install AWS infrastructure solution for quickly deploying Discourse, using both AWS and Discourse best practices. Automatically configured to support auto-scaling through AWS Autoscaling Groups, this solution leverages an S3 bucket for user generated content between application servers. It also supports search via Aurora Postgresql, and an ElastiCache Redis cluster for cache. It configures SES with Easy DKIM for emails, and configures Route53 with convenient DNS entries. The template ensure multi-level security by incorporating AWS IAM for federated access to resources with least privilege and AWS managed keys and Secret Manager to manage secrets for encryption of data at rest and in transit. We support multiple availability zones using an RDS Aurora Postgresql cluster and EC2 Auto Scaling Groups.
Highlights
- Production-ready Discourse site, with search, email, and caching
- Integrated with AWS Certificate Manager for HTTPS support
- Logs in CloudWatch Logs, Remote access via Session Manager
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Dimension | Cost/hour |
|---|---|
t2.micro | $0.02 |
t3.micro | $0.02 |
m5d.16xlarge | $0.58 |
r5d.metal | $1.09 |
c5d.4xlarge | $0.12 |
c5.4xlarge | $0.10 |
t3.small | $0.02 |
c5d.2xlarge | $0.06 |
c5.2xlarge | $0.05 |
c5d.large | $0.02 |
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Delivery details
CloudFormation Template v1.2.0
Discourse on AWS by FOSSonCloud deploys a production-ready Discourse forum using AWS best practices.
WHAT'S DEPLOYED
- VPC with public and private subnets (or use your existing VPC)
- Application Load Balancer with ACM certificate for HTTPS
- Auto Scaling Group with EC2 instances running Discourse (via discourse_docker)
- Aurora PostgreSQL cluster (multi-AZ)
- ElastiCache Redis cluster
- EFS for Discourse shared storage (uploads, backups)
- S3 bucket for user-uploaded assets
- SES domain identity with Easy DKIM for email delivery
- Route53 DNS records
- CloudWatch Logs integration
- AWS Secrets Manager for credential storage
- IAM roles with least-privilege permissions
REQUIREMENTS
- Route 53 hosted zone for DNS
- ACM certificate for HTTPS
- At least one admin email address for initial account setup
CloudFormation Template (CFT)
AWS CloudFormation templates are JSON or YAML-formatted text files that simplify provisioning and management on AWS. The templates describe the service or application architecture you want to deploy, and AWS CloudFormation uses those templates to provision and configure the required services (such as Amazon EC2 instances or Amazon RDS DB instances). The deployed application and associated resources are called a "stack."
Version release notes
- Upgrade Discourse to v2026.3.0
- Upgrade Ubuntu to 24.04
- Upgrade to OE CDK library 4.5.0
- Upgrade Aurora PostgreSQL to 15.13 (was 15.4) causes downtime during upgrade
- Upgrade ElastiCache Redis to 7.0 (was 6.2)
- Upgrade CDK to 2.225.0
- Upgrade OE devenv to 2.8.3
- Introduce versioned AMI parameter (AsgAmiIdv120)
- Switch to AWS Marketplace Catalog API workflow (replaces PLF)
- Remove bundled discourse-math and discourse-cakeday plugins (now in Discourse core)
Additional details
Usage instructions
Run the stack, providing valid parameters. When the stack creation completes, go to the outputs of the stack and open the URL in your browser. Register an account using an email from the AdminEmails parameter to gain admin access. To access the application servers, find the EC2 instance in the AWS console and Connect using the Session Manager option. For more detailed instructions, see the GitHub project.
Resources
Support
Vendor support
https://ordinaryexperts.com/products/discourse-pattern/ Email support offered with subscription.
AWS infrastructure support
AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.