This applies to Magento 2.3+.
If you have your crontab configured to run the
bin/magento cron:run command using
flock, you should either:
flock, since it's technically not necessary as of Magento 2.3.2
- Pass the
-ocommand to flock, as this will prevent the indefinitely running
bin/magento queue:consumers:startprocesses spawned by
bin/magento cron:runfrom holding a lock when they shouldn't be.