How To Use Letsencrypt SSL/TLS Encryption to Create Certificates without installing on the target machine

For some reason, perhaps you don't want to run a daemon or let Letsencrypt have access to your production server.

There is a way to use it like a normal CSR/CA setup in manual mode.

./letsencrypt-auto certonly --manual -d realtechtalk.com - www.realtechtalk.com
 

Eventually you will get prompted to create a certain path and file with certain data:

Create a file containing just this data:

CasdfasfadsfsadfsdafsdafdsafdsafdsuKVQ

And make it available on your web server at this URL:

http://realtechtalk.com.well-known/acme-challenge/C-asdfasfdsafdsQciE_IQ8

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Press Enter to Continue

#edit this script to suite your vhost path and then run it:

#!/bin/bash

fullurl=$1
data=$2

if [ -z $fullurl ] || [ -z $data ]; then
  echo "Usage $0 http://url/.well-known/file data"
  exit 1
fi

#replace http://www
if [[ $fullurl == http://www.* ]]; then
 path=`echo $fullurl|sed s#"http://www."##g|cut -f 1 -d "/"`
 #echo "path with www"
else
 path=`echo $fullurl|sed s#"http://"##g|cut -f 1 -d "/"`
fi
fullpath=/www/vhosts/$path/httpdocs/
createpath=`echo $fullurl|sed s#"http://"##g|cut -d "/" -f 4`

# put your main vhost path here
cd /www/vhosts/$path/httpdocs
mkdir -p .well-known/acme-challenge
echo "$data" > .well-known/acme-challenge/$createpath

Then run the script:

the first argument is the URL they wanted you to create the second is the data they want in the file.

./letsencrypt-realtechtalk.com http://realtechtalk.com.well-known/acme-challenge/C-asdfasfdsafdsQciE_IQ8
CasdfasfadsfsadfsdafsdafdsafdsafdsuKVQ

Then hit enter on the letsencrypt screen


Waiting for verification...
Cleaning up challenges

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at:
   /etc/letsencrypt/live/realtechtalk.com/fullchain.pem
   Your key file has been saved at:
   /etc/letsencrypt/live/realtechtalk.com/privkey.pem
   Your cert will expire on 2019-06-26. To obtain a new or tweaked
   version of this certificate in the future, simply run
   letsencrypt-auto again. To non-interactively renew *all* of your
   certificates, run "letsencrypt-auto renew"
 - If you like Certbot, please consider supporting our work by:

   Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate
   Donating to EFF:                    https://eff.org/donate-le

 

After this you can just copy over the .pem files to your server as needed.

 


Tags:

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