[OpenSSL] How to generate CSR and SSL Key

User must be root.
 
Generate Key
  # openssl genrsa -des3 -out server.key 2048
Generate CSR
  # openssl req -new -key server.key -out server.csr
Check CSR
  # openssl req -noout -text -in server.csr
Write password in the key
  # openssl rsa -in server.key -out servera.key