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I want to install certificate on Ec2 for domains and subdomains.

I'm running a website "www.example.in" on single EC2 instance which is in public subnet with public IP and also pointing some subdomains like "api.example.in", "dashboard.example.in" and "jenkins.example.in" to the same EC2 instance.

I thought to use ACM certificate to secure my website but ACM certificate can't be use directly on EC2 instance.

If i use third party tools like "let's encrypt". If I install certificate directly on EC2, will it block my subdomains or will impact on my website?

rajeev singh
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2 Answers2

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With ACM (Amazon certs) https://aws.amazon.com/premiumsupport/knowledge-center/configure-acm-certificates-ec2/

Without ACM (bring your own cert) https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/SSL-on-amazon-linux-2.html

No, it will not block your website. "Let's encrypt" works just fine. I have worked with it.

G Scott Walters
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HumayunM
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Regarding your subdomains, you can create a wildcard certificate that can provide SSL for example.in and all subdomains (e.g. api.example.in, dashboard.example.in).

Let's Encrypt supports wildcard certs.

G Scott Walters
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