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This requires an additional initial set up on slaves (especially on Windows, where remote login mechanism is not available out of box), but the benefits of this approach is that when the connection goes bad, you can use Hudson's webui to re-establish the connection. Also note that

Info
titleUpdating slave.jar

Technically speaking, in this set up

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you

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should update slave.jar

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every time you upgrade Hudson to a new version

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. However, in practice slave.jar changes infrequently enough that it's also practical not to update until you see a fatal problem in start-up. Clever folks have also set things up so that their slave launch script would automatically update slave.jar, too.

Launch slave agent via Java Web Start

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