unable to get letsencrypt certificate


Hi, I'm new to AWS.

I can't get a letsencrypt certificate on a UBUNTU VM. Here is the error message I get:

Certbot failed to authenticate some domains (authenticator: apache). The Certificate Authority reported these problems:  Domain: emarge.cfa-epure.com  Type:   connection  Detail: Fetching http://emarge.cfa-epure.com/.well-known/acme-challenge/_jqRgsdxDCCCn0TlQLdShQLTjTHXci-hvdatiffLWas: Timeout during connect (likely firewall problem)

Ports are opened and no firewall activated on the VM. Any advice apreciated

preguntada hace 3 meses149 visualizaciones
2 Respuestas


Is HTTP allowed in EC2's security group inbound rules?
Let's Encrypt's HTTP challenge will fail if the web server cannot be reached on port 80.

Please check the following document for examples of security groups used on web servers.

Please check the following document for adding rules to security groups.

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respondido hace 3 meses

In addition to Riku's answer above, have you checked out AWS Certificate Manager? I've found it to be a pretty convenient way to create & manage my certs without needing to install letsencrypt certbot.

You can attach the cert to the load balancer whether through the console, CLI, or infrastructure as code (CloudFormation)

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respondido hace 3 meses

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