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serving/ssl: add 90d warning about letsencrypt (#393) 

* serving/ssl: add 90d warning about letsencrypt

I don't think certbot method listed here is renewing LE certs. It's especially
important as LE certs expire every 90 days, so I'm adding a warning.

Also using the Let's Encrypt spelling.

Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>

* move warning up

* Update using-an-ssl-cert.md
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Ahmet Alp Balkan 2018-11-27 10:23:23 -08:00 committed by Knative Prow Robot
parent d0fcb6e2bc
commit cfb2e9dc58
1 changed files with 8 additions and 3 deletions
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serving/using-an-ssl-cert.md
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@ -73,11 +73,16 @@ spec:
Once the change has been made, you can now use the HTTPS protocol to access Once the change has been made, you can now use the HTTPS protocol to access
your deployed services. your deployed services.
## Obtaining an SSL/TLS certificate using Let’s Encrypt through CertBot
## Obtaining an SSL/TLS certificate using LetsEncrypt through CertBot If you don't have an existing SSL/TLS certificate, you can use [Let's
Encrypt][le] to obtain a certificate manually.
If you don't have an existing SSL/TLS certificate, you can use [LetsEncrypt](https://letsencrypt.org) > **Warning:** Certificates issued by [Let's Encrypt][le] are only valid for
to obtain a certificate manually. > [90 days](https://letsencrypt.org/docs/faq/). You must renew your certificate
> with the certbot tool again every 90 days.
[le]: https://letsencrypt.org/
1. Install the `certbot-auto` script from the [Certbot website](https://certbot.eff.org/docs/install.html#certbot-auto). 1. Install the `certbot-auto` script from the [Certbot website](https://certbot.eff.org/docs/install.html#certbot-auto).
1. Use the certbot to request a certificate, using DNS validation. The certbot tool will walk 1. Use the certbot to request a certificate, using DNS validation. The certbot tool will walk