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by AcidBurn 3769 days ago
Other than Amazon Certificate Manager as moatra mentions (which I don't think let's you export the certificate), I don't think there is currently an option for free wildcard certificates.

As an alternative you could incorporate provisioning of a Let's Encrypt certificate for the new subdomain into your deployment process since the process is designed to be automated.
2 comments
iancarroll 3768 days ago
Current rate limiting wouldn't really make it possible, unfortunately.
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x0 3768 days ago
Not if you have more than five subdomains, you have to wait for a week, like me.
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detaro 3768 days ago
... if you need a different certificate for each subdomain. You are limited to 5 certificates per domain per week, each of which can be valid for many subdomains. Bad if you want to be able to add them dynamically every time a new name comes up, but if it is a static set...
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mitchty 3768 days ago
I used SubjectAltNames on my setup. One domain/one cert, though I only did 2 subdomains.
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