[jira] [Assigned] (NIFI-11230) Log Warnings on Startup for OS Best Practices

["Emilio Setiadarma (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-11230?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Emilio Setiadarma reassigned NIFI-11230:
----------------------------------------

    Assignee: Emilio Setiadarma

> 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
>
> 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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