1. http://www.ngs.ac.ukhttp://www.grid-support.ac.uk http://www.eu-egee.org/http://www.pparc.ac.uk/http://www.nesc.ac.uk/ The NGS Portal Guy Warner NeSC Training Team

2. Induction to Grid Computing and the National Grid Service, Oxford University Computing Services, 5th-6th July 2005 A Problem! How do I authenticate myself to the Grid Services? Grid Services Command Line Usage of Grid Services grid-proxy-init

3. Induction to Grid Computing and the National Grid Service, Oxford University Computing Services, 5th-6th July 2005 A Problem! Grid Services Portal Usage of Grid Services Portal ??

4. Induction to Grid Computing and the National Grid Service, Oxford University Computing Services, 5th-6th July 2005 Solution: “MyProxy” Myproxy allows you to store a long-lived proxy in a “MyProxy repository” and derive a proxy certificate when needed. Allows you to: –Interact with a grid from many machines And you realise that you must NOT, EVER leave your certificate where anyone can find and use it. –Use a portal, and delegate to the portal the right to act on your behalf (by logging in to an account that can make a proxy certificate for you) –Run jobs that might last longer than the lifetime of a short-lived proxy

5. Induction to Grid Computing and the National Grid Service, Oxford University Computing Services, 5th-6th July 2005 Grid Authentication with MyProxy Grid Services MyProxy Server NGS Portal UI A Work Station Web Browser 1: 2: Any Grid Service 6: output 0: grid-proxy-init myproxy-init 3: myproxy-get-delegation 4: execution 5: output

6. Induction to Grid Computing and the National Grid Service, Oxford University Computing Services, 5th-6th July 2005 The Portal https://portal.ngs.ac.uk