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https://issues.apache.org/jira/browse/NIFI-11230?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Handermann resolved NIFI-11230.
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Fix Version/s: 2.0.0
Resolution: Fixed
> Log Warnings on Startup for OS Best Practices
> ---------------------------------------------
>
> Key: NIFI-11230
> URL: https://issues.apache.org/jira/browse/NIFI-11230
> Project: Apache NiFi
> Issue Type: New Feature
> Reporter: David Handermann
> Assignee: Emilio Setiadarma
> Priority: Minor
> Fix For: 2.0.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> The Administrator's Guide outlines several [best
> practices|https://nifi.apache.org/docs/nifi-docs/html/administration-guide.html#configuration-best-practices]
> for optimal configuration of the Linux operating system to run NiFi.
> Not following these best practices can lead to confusing errors at runtime,
> such when NiFi does not have enough file handles or enough TCP sockets.
> Adding evaluation of these properties on startup and logging warnings for
> less-than-optimal settings would help avoid some runtime troubleshooting
> challenges.
> The initial implementation should cover the Linux platform, be should be
> designed using interfaces to gather the platform information, which would
> support extending similar checks to macOS.
> The implementation should check and warn for the following settings:
> # Maximum File Handles
> # Maximum Forked Processes
> # Maximum local TCP socket ports
> # Maximum TCP socket time wait interval
> # Swappiness enabled
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