Even I am looking for a .crt, .key, .ca-bundle files however I can only see .pem files inside /etc/letsencrypt/archive/ directory.
-rw------- 1 root root 1708 May 30 23:38 privkey.pem
-rw-r--r-- 1 root root 5629 May 30 23:38 fullchain.pem
-rw-r--r-- 1 root root 3750 May 30 23:38 chain.pem
-rw-r--r-- 1 root root 1879 May 30 23:38 cert.pem
Based on my google search I think that the following commands would give me a .key file, a .cert file, however, I am unable to understand where would I get a .ca-bundle file.
openssl x509 -outform der -in cert.pem -out certificate.crt
openssl pkey -in privkey.pem -out privkey.key
Can you please help me figure out where would I get a .ca-bundle file ?