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markt: I think this needs to be reconsidered.

vlad: Sure. My take was to use unencrypted connections, since it's fast to implement for me and I don't know well how to implement a secured connection. Maybe we could even offer both options. Anyway, why do you consider we need an secured connection? In my experience, I've never needed them in dev/state/QA/test, and in prod the environment are isolated. Well... I guess there are other scenarios I haven't been exposed to.

All Tomcat instances (including the Web Grid Managers), as well as the Grid Agents, are installed manually. The primary grid manager and all the agents are started manually too.

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The Grid Agents are processes that can also be managed. In particular, status can be obtained (and showed) from them, and basic operations (start/stop/kill) can be triggered on them. These operations are, however, heavily dependent on OS and OS capabilities (configuration, installed tools, etc.) and the infrastructure architecture (fire-walled machines, network VLans, etc) can be triggered on them. These operations are, however, heavily dependent on OS and OS capabilities (configuration, installed tools, etc.) and the infrastructure architecture (fire-walled machines, network VLans, etc).

Collectively, Tomcat instances and Grid Agents are "services" since both can be managed.

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Collectively, Tomcat instances and Grid Agents are "services" since both can be managed.

markt: Managing the agents strikes me as making this significantly more complex. Operating systems have tools to ensure particular services are running and are restarted if they fail. What is the benefit of pulling this into this tool?

vlad: I agree that agents can run as daemons and be up all the time. However, I've seen many "robust" programs to have memory leaks and that for one reason or another stop working normally after some time. Maybe after a couple of days, or weeks, or months. Maybe it would be useful to restart them just before a critical operation such as a deployment. I agree that managing agent is more expensive since it requires the development and maintenance of multiple OS-dependent implementations.markt: Managing the agents strikes me as making this significantly more complex. Operating systems have tools to ensure particular services are running and are restarted if they fail. What is the benefit of pulling this into this tool?

Later versions of the Grid include "collection" management. This allows to group subsets of services (Tomcat instances and Grid Agents), so they can be operated as whole. Each collection can include plain services, or other collections (recursively).

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