On 11/15/22 05:08, Szűcs Roland wrote:
Dear SOLR users,
I use Solr 9.0, with open jdk 11. After installation, I managed to access
the admin page of the solr, but I always get two warnings at the startup of
the server.
One is complaining about low entropy and the other is the max number of
open files.
Is there a blog post or any guidance how to get rid of this warning message
on Ubuntu 22.04?
The low entropy one might be solved by installing the "haveged" package
with apt. Some servers have hardware random number generators that
Linux can use. That is common on Dell servers, not sure about other
OEMs. The fact that you have a low entropy warning probably means that
your hardware does not have a random number generator.
If you don't want to actually increase the limits as Nicolae mentioned,
the warning can be eliminated by adding SOLR_ULIMIT_CHECKS=false to the
include script. That will usually be /etc/default/solr.in.sh or
bin/solr.in.sh. It doesn't take a very big install for a Solr to blow
through typical OS default limits, so if it were me, I would prefer to
adjust the limits rather than turn off the warning.
Thanks,
Shawn
