Date: 2018apr4 OS: RedHat/Fedora/CentOS Product: letsencrypt Q. The certificate for <host> will expire in 29 days

################# SSL Certificate Warning ################ Certificate for hostname '<host>', in file (or by nickname): /etc/letsencrypt/live/<host>/fullchain.pem The certificate needs to be renewed; this can be done using the 'genkey' program. Browsers will not be able to correctly connect to this web site using SSL until the certificate is renewed. ########################################################## Generated by certwatch(1)

A. I was able to fix this by running:

certbot renew

I already had it in /etc/cron.daily so I bet if I had just waited a day it would have fixed itself.