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To Know about letsEncrypt and its working please refer to this blog.


Generating certificates can be achieved in two ways

  • Manual
  • Automated

Manual 

Please follow the steps mentioned below to generate the certificates manually

  • Install acme.sh
curl https://get.acme.sh | sh		
  • DNS manual mode


acme.sh --issue --dns -d aa.com -d www.aa.com
  • Please make sure that you get an output like the one below:
Add the following txt record:
Domain:_acme-challenge.aa.com
Txt value:9ihDbjYfTExAYeDs4DBUeuTo18KBzwvTEjUnSwd32-c

Add the following txt record:
Domain:_acme-challenge.www.aa.com
Txt value:9ihDbjxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Please add those txt records to the domains. Waiting for the dns to take effect.
  • Rerun with renew argument:
acme.sh --renew -d aa.com


Automated

Lego can be used to automate the process of generating certificates. Currently it comes with multiple optional DNS providers.

  1. Download the latest version from releases -> https://github.com/xenolf/lego/releases
  2. Install golang -> https://golang.org/doc/install
  3. Obtain a certificate using the DNS challenge and AWS Route 53
AWS_REGION=us-east-1 AWS_ACCESS_KEY_ID=my_id AWS_SECRET_ACCESS_KEY=my_key lego --email="foo@bar.com" --domains="example.com" --dns="route53" run





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