cd /etc/apache2/ssl
sudo openssl genrsa -out ./domain.key 2048
sudo openssl req -new -sha256 -key ./domain.key -out ./domain.csr
Source: http://www.rackspace.com/knowledge_center/article/generate-a-csr-with-openssl
cd /etc/apache2/ssl
sudo openssl genrsa -out ./domain.key 2048
sudo openssl req -new -sha256 -key ./domain.key -out ./domain.csr
Source: http://www.rackspace.com/knowledge_center/article/generate-a-csr-with-openssl