Hello,

With Solr already started.
#get solr pid
ps -ef|grep solr
#list process limits
cat /proc/solrpid/limits

As the user that runs Solr you can check the user limits:
#hard limits
ulimit -Ha
#soft limits
ulimit -Sa

Generally, the soft limits are applied.
You can change them in /etc/security/limits.d/solr.conf
as described here:
https://www.searchistheway.com/posts/How_to_help_Apache_Solr_project_testing_Solr_9.5.RC3/#setting-user-limits

Hope this helps

Kind regards,
Alejandro Arrieta




On Wed, Apr 17, 2024 at 1:32 PM Johnnie W Adams <jxad...@ualr.edu> wrote:

> Hi, folks,
>
>      I worked around (for the moment) my install problems and get this
> message on starting solr up:
>
> *** [WARN] *** Your open file limit is currently 1024.
>
>  It should be set to 65000 to avoid operational disruption.
>
>  If you no longer wish to see this warning, set SOLR_ULIMIT_CHECKS to false
> in your profile or solr.in.sh
>
> *** [WARN] ***  Your Max Processes Limit is currently 14430.
>
>  It should be set to 65000 to avoid operational disruption.
>
>  If you no longer wish to see this warning, set SOLR_ULIMIT_CHECKS to false
> in your profile or solr.in.sh
>
>
>      However:
>
> # sysctl -p
>
> fs.file-max = 65000
>
> kernel.pid_max = 65000
>
>      Are these WARNings accurate? I guess I could just disable them, but
> that seems sloppy.
>
> Thanks,
>
>      John A
> --
> John Adams
> Senior Linux/Middleware Administrator  | Information Technology Services
> +1-501-916-3010 | jxad...@ualr.edu | http://ualr.edu/itservices
> *UA Little Rock*
>
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>

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