I am using apache2 in Debian10, I'm trying to update an SSL certificate with the command certbot, but i faced this problem. after I looked other question, It seems like the port 80 has been used by other Program. I have used command
systemctl stop apache2.service
to stop the apache2, but it was nothing changed.
then I used lsof -i:80 to show the list
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
apache2 6028 root 4u IPv6 320155 0t0 TCP *:http (LISTEN)
apache2 6029 www-data 4u IPv6 320155 0t0 TCP *:http (LISTEN)
apache2 6030 www-data 4u IPv6 320155 0t0 TCP *:http (LISTEN)
apache2 6031 www-data 4u IPv6 320155 0t0 TCP *:http (LISTEN)
apache2 6032 www-data 4u IPv6 320155 0t0 TCP *:http (LISTEN)
apache2 6035 www-data 4u IPv6 320155 0t0 TCP *:http (LISTEN)
apache2 6038 www-data 4u IPv6 320155 0t0 TCP *:http (LISTEN)
apache2 6039 www-data 4u IPv6 320155 0t0 TCP *:http (LISTEN)
apache2 6042 www-data 4u IPv6 320155 0t0 TCP *:http (LISTEN)
apache2 6043 www-data 4u IPv6 320155 0t0 TCP *:http (LISTEN)
apache2 6045 www-data 4u IPv6 320155 0t0 TCP *:http (LISTEN)
I killed them, but It is come out after I use command
sudo certbot renew --dry-run
please teach me how to fix it, thank you.