Current GEMINI use of instrumentize script to initialize & configure services Hussam Nasir University of Kentucky

GEMINI Configuration and Initialization GEMINI requires RSPEC extensions: The RSPEC extensions specify: The Nodes to monitor (measurement points (MP) nodes) For each MP Node GEMINI extension attributes defines which services (active or passive) to install and enable The (Global) Node that does the monitoring, data collection, and rendering. It also acts a gateway to the MP nodes For each GN Node, GEMINI extension attributes define which AMs nodes to monitor. Because the GN serves both as a gateway to reach MP nodes, and as a data collection point, we initialize the GN in two phases: Initialize access to MP nodes: Sets up basic ssh access to the MP Nodes via the GN Node (accessible via the GENIDesktop) Initialize I&M code and services: Install and configure passive and active data/stats collection

GEMINI Key Components Key components of GEMINI the GeniDesktop Parser – parses the slice configuration (e.g., the RSPEC) UNIS – stores the current configuration and status of the slice Parser talks to the AMs, SAs and CH to obtain user information, slice information and topology information for the slice. It makes this information available to various GEMINI Services and the GeniDesktop UNIS initially gets information from the Parser, but then interacts with GEMINI Services to keep track of, and manage, their configuration. It provides a “live” view of the slice configuration that GEMINI services can contact to discover what to do and how to communicate with other GEMINI services. Used to start/stop GEMINI services.

Known (Remaining) Challenges Need to test using big multi-aggregate experiments (within Protogeni) Improve scripts efficiency by parallelizing the install/configure process when using multi-aggregate experiments. Test using credentials from non-protogeni Control Frameworks like planetlab, Portal CH etc. Add support for more Oses. Harden the current implementation and improve status reporting while scripts are running. Update the parser code when there is new information required by the monitoring services or when the manifest/rspec format changes.

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