Free https certificate request

https certificate request

Https certificate for a free application by Let 's Encrypt

1. Official Web site
   first before hands, can go certbot see, I think it is necessary to it!

2. Installation certbot

   yum install epel-release -y
   yum install certbot

3. Wildcard certificate request command
   execution will command the owner to verify the domain name, which is to add a TXT record to the domain console.

   certbot certonly  -d *.test.com --manual --preferred-challenges dns --server https://acme-v02.api.letsencrypt.org/directory

   Domain directory will be displayed after the completion of

4, automatic renewal

echo "0 0,12 * * * root python -c 'import random; import time; time.sleep(random.random() * 3600)' && certbot renew" | sudo tee -a /etc/crontab > /dev/null

30 days before renewal of default due, if not satisfied can manually configure
/etc/letsencrypt/renewal/test.conf

5, certificate clean up
if you do not want it or for other reasons need to clean up, you can execute the following command

rm -rf /etc/letsencrypt/live/www.example.com/
rm -rf /etc/letsencrypt/archive/www.example.com/
rm /etc/letsencrypt/renewal/www.example.com.conf