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The "TomcatGridDiscussion" page has been changed by theimpaler: https://wiki.apache.org/tomcat/TomcatGridDiscussion?action=diff&rev1=11&rev2=12 ''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. Once the Web Grid Manager is started up, machines and instances can be registered in it, so they can become manageable. No centralized (comprehensive) provisioning is envisioned until later versions of Tomcat Grid (see below). @@ -34, +36 @@ 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.'' 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). --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org
