I used acme.sh to request ssl certificate from letsencrypt and got 4 files.
Your cert is in …com.cer
Your cert key is in …com.key
The intermediate CA cert is in …com/ca.cer
And the full chain certs is there: …com/fullchain.cer
I see an online instruction for apache installation says the following,
your_domain_name.crt and your_private.key are clear but which one should I use in place of the last one DigiCertCA.crt? Is it ca.cer or fullchain.cer?
Then what about the one left after that? Where do I use it?