LetsEncrypt SSL

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SSL certficate, do following. 
cd /etc/webmin#  mv miniserv.pem miniserv.pem.old#  cat /etc/letsencrypt/live/YOURDOMAIN/cert.pem /etc/letsencrypt/live/YOURDOMAIN/privkey.pem /etc/letsencrypt/live/YOURDOMAIN/chain.pem > /etc/webmin/miniserv.pem

#  systemctl restart webmin


webmin using this SSL cert at 
https://YOURDOMIN:10000
To auto renew SSL, add following entry to cronjob that renew your LetsEncrypt SSL certificate. 
cat /etc/letsencrypt/live/YOURDOMAIN/cert.pem /etc/letsencrypt/live/YOURDOMAIN/privkey.pem /etc/letsencrypt/live/YOURDOMAIN/chain.pem > /etc/webmin/miniserv.pem

#  systemctl restart webmin






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