the vars file in its simplest form would be something like:
export EASY_RSA="`pwd`"
export KEY_CONFIG="$EASY_RSA/openssl.cnf"
export KEY_DIR="$EASY_RSA/keys"
echo NOTE: If you run ./clean-all, I will be doing a rm -rf on $KEY_DIR
export KEY_SIZE=1024
export CA_EXPIRE=3650
export KEY_EXPIRE=3650
export KEY_COUNTRY=...
export KEY_PROVINCE=...
export KEY_CITY=...
export KEY_ORG=...
export KEY_EMAIL=....
where you can find the country, province, city, org and email values by looking at the 'ca.crt' file:
openssl x509 -subject -noout -in /etc/openvpn/keys/ca.crt
KEY_COUNTRY = /C=...
KEY_PROVINCE = /ST=...
KEY_CITY = /L=...
KEY_ORG = /O=...
KEY_EMAIL = /emailAddress=....