./acme.sh –issue -d *.domain –dns –yes-I-know-dns-manual-mode-enough-go-ahead-please
./acme.sh –renew -d *.domain –yes-I-know-dns-manual-mode-enough-go-ahead-please

issue – add special key to domain dns provider (TXT record: _acme-challenge.[domain]
than renew the key (2nd command).

I use it with apache and in the ssl conf I direct to the location where the cert and key is saved