This is recurrent daily on various machines running kafka. Details on the affected files vary, but the typical email body is:
gzip: /var/log/kafka/kafka-request.log.gz already exists; not overwritten gzip: /var/log/kafka/controller.log.gz already exists; not overwritten gzip: /var/log/kafka/kafka-authorizer.log.gz already exists; not overwritten
I'm not ~100% sure is the same issue, but the symptoms are very similar. I'm still getting daily this logspam:
Subject: Cron <root@esnode1> find /var/log/kafka -type f -name *.log.* -a -not -name *.gz -a -ctime +1 -exec gzip {} \+it's always from the same 3 nodes (esnode{1,2,3}) and the mail content is:
gzip: /var/log/kafka/kafkaServer-gc.log.7.gz already exists; not overwritten gzip: /var/log/kafka/kafkaServer-gc.log.8.gz already exists; not overwritten gzip: /var/log/kafka/kafkaServer-gc.log.6.gz already exists; not overwritten
with varying log rotation numbers.