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Automating Zero-Downtime Multi-Domain SSL on AWS EC2 with Docker and Nginx

Managing SSL/TLS certificates across multiple customer subdomains or microservices is a rite of passage for every cloud engineer. While AWS Application Load Balancer (ALB) paired with AWS Certificate Manager (ACM) is the standard managed solution, smaller projects, staging clusters, and cost-conscious architectures often require running an Nginx reverse proxy directly on an EC2 instance.

In this guide, we will implement an automated

In this guide, we will implement an automated, multi-domain SSL architecture on an AWS EC2 instance using Docker, Nginx, and Certbot (Let's Encrypt)—with zero downtime for existing traffic. 🏗️ The Architecture Overview Here is how traffic flows through our host: For further actions, you may consider blocking this person and/or reporting abuse

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Automating Zero-Downtime Multi-Domain SSL on AWS EC2 with Docker and Nginx

Managing SSL/TLS certificates across multiple customer subdomains or microservices is a rite of passage for every cloud engineer.

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Source: Dev.to

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