top shows apache running normally
root@mail:~# service apache2 stop
root@mail:~# service apache2 start
root@mail:~# certbot renew --dry-run
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Processing /etc/letsencrypt/renewal/mail.mydomain.com.conf
Cert not due for renewal, but simulating renewal for dry run
Starting new HTTPS connection (1): acme-staging.api.letsencrypt.org
Renewing an existing certificate
Performing the following challenges:
tls-sni-01 challenge for mail.mydomain.com
Waiting for verification…
Cleaning up challenges
Generating key (2048 bits): /etc/letsencrypt/keys/0006_key-certbot.pem
Creating CSR: /etc/letsencrypt/csr/0006_csr-certbot.pem
** DRY RUN: simulating ‘certbot renew’ close to cert expiry
** (The test certificates below have not been saved.)
Congratulations, all renewals succeeded. The following certs have been renewed:
/etc/letsencrypt/live/mail.mydomain.com/fullchain.pem (success)
** DRY RUN: simulating ‘certbot renew’ close to cert expiry
** (The test certificates above have not been saved.)
top shows apache hung at 100%
root@mail:~# reboot