Logstash stopped working


Could you help me to solve starnge problem?

I've got logstash which works with filebeat only. I see that logstash stopps after some hours of working. I take place once a day (at night). I tried to see log files (I mean messages and logstash log files themselves) but there are no error events.

I've started logstash with by the following way
nohup /opt/logstash/bin/logstash -f /etc/logstash/conf.d -l /var/log/logstash.logging --log.level debug &

but I still can't see any output in logstash.logging file.

Could you provide me an advice how to troubleshoot this issue?

Thanks in advance.

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