New droplet is trying to use an expired SSL certificate from Let's Encrypt

April 5, 2017 186 views
Nginx Ubuntu

I scrapped an old droplet and set up a new one a few days ago. I don't remember playing around with Let's Encrypt on the old one, but I possibly did.
Anyway, I've set up the name servers etc. and can access nginx's landing page from my url. But some unexpected things are happening: 1) every request redirects to https even though I haven't configured this, and 2) my browser tells me that my site is trying to use a Let's Encrypt certificate which expired about a month ago (long before the droplet was set up).

Does anyone know how to resolve these issues?

1 Answer

Hi @grantmorrison

Without seeing the domain, my guess would be you've setup Let's Encrypt at some point.
You can lookup your domain here to see all certificates issued: https://crt.sh/

If you ever had the Nginx configuration to add a header called Strict-Transport-Security (HSTS), then your browser remembers to only communicate over HTTPS until the age of the header.

But if you enable developer tools in your browser, you'll see if it gets redirected from your current server or if it uses HSTS.

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