Run the following:

Example1:
openssl req -newkey rsa:2048 -nodes -keyout example1-cert.key -out example1-cert.csr -subj "/C=CA/ST=Ontario/L=Ottawa/O=AnyCompany/CN=*.example.ca"
openssl x509 -signkey example1-cert.key -in example1-cert.csr -req -days 1095 -out example1-cert.crt

Example2:
openssl req -newkey rsa:2048 -nodes -keyout example2-cert.key -out example2-cert.csr -subj "/C=CA/ST=Ontario/L=Ottawa/O=AnyCompany/CN=*.example.local"
openssl x509 -signkey example2-cert.key -in example2-cert.csr -req -days 1095 -out example2-cert.crt