Add config option to disable or enable cmdline cache for System Process Metricset #3891
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Jenkins standing by to test this. If you aren't a maintainer, you can ignore this comment. Someone with commit access, please review this and clear it for Jenkins to run. |
| This metricset caches the command line args for a running process. This means if you alter | ||
| the command line for a process while this metricset is running, these changes are not detected. | ||
| This feature can disabled by adding | ||
| `process.cmdline.cache: false` to the system module configuration. |
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We should add this option also to the full config file: https://github.com/elastic/beats/blob/master/metricbeat/module/system/_meta/config.full.yml (don't forget make update ;-) )
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Do you mean to add an optional timeout config if cache is true
process.cmdline.cache: true
process.cmdline.timeout: 5m
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I was more thinking out loud. So far I don't think we had any requests for it so I would leave it out. But it is good to have it as a potential option for the future.
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When the PID disappears the cached cmdline for the PID is dropped. This is the current behavior.
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Could you also update the changelog? |
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Ok. Is the grammar of the description right? |
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| This metricset caches the command line args for a running process. This means if you alter | ||
| the command line for a process while this metricset is running, these changes are not detected. | ||
| This feature can disabled by adding |
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This feature can be disabled by adding
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@maddin2016 Left one additional comment there. Would also like to get @andrewkroh opinion on the feature. |
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The implementation LGTM. I have two questions.
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@andrewkroh The nice part about having |
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An other advantage of adding enabled is that in case we add a timeout in the future, |
Of course |
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Do you happen to know what API call an application needs to use to update its command line after starting? On Linux this is possible (I think via magic) and BSD has setproctitle. But I can't find anything about this for Win. |
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See here
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fixes #3799
This PR add a config option for the process metricset to disable or enable caching the commandline args for a process.