1. Get the EC2 API tool http://s3.amazonaws.com/ec2-downloads/ec2-api-tools-1.3-62308.zip. Install it by unzipping it 2. Prepare a API request certificate, if you have Amazon account, Amazon has the service to let you generate and download a X509 certificate and its associated private key 3. Prepare EC2 command running environment Set following environment variables and make them point to the right location. EC2_ACCESS_KEY= EC2_SECRET_KEY= EC2_HOME: EC2_CERT: EC2_PRIVATE_KEY: EC2_URL: http:///bridge/AmazonEC2 4. Generate CloudStack API key Login to CloudStack management console, you can generate an API key and its secret key pair there. 5. Inform CloudBridge about the API/security key pair to use http:///bridge/rest/AmazonEC2?Action=SetUserKeys&accesskey=&secretkey= 6. Upload certificate and associate it with the API key There is not a convenient tool to do that, this has to be done in manual step. following HTML form can be used to submit the certificate, be sure to replace the content matching with your setup though. to ec2-service.properties Save the cert into Cloud's EC2 Service: