Ishan Chattopadhyaya created SOLR-16644:
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Summary: Entropy warning thresholds need to be revisited
Key: SOLR-16644
URL: https://issues.apache.org/jira/browse/SOLR-16644
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Reporter: Ishan Chattopadhyaya
As per the following, newer kernels (5.15+) have recalibrated the entropy
levels from 0-4096 to 0-256. Hence, everything is throwing a warning:
{code}
Warning: Available entropy is low. As a result, use of the UUIDField, SSL, or
any other features that require
RNG might not work properly. To check for the amount of available entropy, use
'cat /proc/sys/kernel/random/entropy_avail'.
{code}
Here's where I found out about this change:
https://askubuntu.com/questions/1427470/entropy-is-stuck-at-256-after-upgrading-to-kernel-5-15-0-47
We might need to intelligently report the low entropy (based on kernel version).
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