Hi There,

I have configured JMX Exporter to scrape the kafka metrics as a java agent.

I am able to see JMX Exporter fetch all the Kafka metrics only for a few 
hours after which prometheus is unable to scrape the metrics and we get the 
below message

context deadline exceeded


Also when we run a curl for the  from the Kafka Instance it takes forever 
to pull the Kafka metrics.

[user@kafkaX ~]$ curl http://XX.XX.XX.YYY:7070/metrics 
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  
Current
                                 Dload  Upload   Total   Spent    Left  
Speed
  0     0    0     0    0     0      0      0 --:--:--  0:40:01 --:--:--    
 0


If i do a restart of the Kakfa service, I can see the metrics being able to 
be pulled up again only for few hours and then we are back to the above 
issue.


I have setup JMX exporter as a java agent, which is run along with Kafka 
service

cat /etc/systemd/system/kafka.service

[Service]
Environment="KAFKA_OPTS=-Djava.security.auth.login.config=/opt/kafka/config/kafka_server_jaas.conf
  
-javaagent:/opt/jmx-exporter/jmx_prometheus_javaagent-0.12.0.jar=7070:/opt/jmx-exporter/kafka-2_0_0.yml"

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