Does jenkin plugin installation needs jenkins restart incase if it is upgraded to newer version ?

[Jagadish Sethi]

Does jenkin plugin installation needs jenkins restart incase if it is upgraded to newer version ?

Initially when I have installed a jenkin plugin in my jenkins instance it doesn't need jenkins restart and I can use then further in job.

But when I have manually installed plugin to newer version. It doesn't get updated. But after restart it gets updated.

Is this the expected case ?

Thanks & Regards,

Jagadish

[Mark Waite]

That's the general case I've experienced. When I upgrade a plugin, either by upload of my own copy, or by download from the update center, I almost always need to restart Jenkins before the updated plugin is used.

Mark Waite

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Thanks!

Mark Waite

[Jagadish Sethi]

So this the expected case where we always need to restart jenkins instance if we upgrade a plugin.

[Mark Waite]

Yes

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Thanks!

Mark Waite

[Stephen Connolly]

It's mostly easy to wire up a new plugin where none was before. Most of the plugin functionality will be enabled. You'd only need a restart to work around any plugins with an optional dependency on the newly installed plugin IF they do hard caching.... This is exceedingly rare, so for the 99.9% case you can install a new plugin for the first time without restarting.

For uninstall, however, jenkins cannot know which plugins are maintaining a reference to the uninstalled plugin resources, so a restart is always required.

HTH

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