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# generals
Slackbot
03/01/2024, 12:55 PMThis message was deleted.
j
John Kowtko
03/01/2024, 1:36 PMHi Tapajit,
There is a section on this in the learn.imply.io course on metrics ... I took it a while ago and don't remember if there are config files in here that you can use as a reference, but it might be worth a quick look:
https://learn.imply.io/apache-druid-metrics/1474144
r
Rohan Sharma
03/06/2024, 10:05 AMHi @Tapajit Chandra Paul any progress you made?
I followed the link suggested by @John Kowtko however looks like my historical is failing to come up with below error:
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Error in custom provider, java.lang.NoClassDefFoundError: io/prometheus/client/Collector
at org.apache.druid.emitter.prometheus.PrometheusEmitterModule.getEmitter(PrometheusEmitterModule.java:60) (via modules: com.google.inject.util.Modules$OverrideModule -> org.apache.druid.emitter.prometheus.PrometheusEmitterModule)
at org.apache.druid.emitter.prometheus.PrometheusEmitterModule.getEmitter(PrometheusEmitterModule.java:60) (via modules: com.google.inject.util.Modules$OverrideModule -> org.apache.druid.emitter.prometheus.PrometheusEmitterModule)
while locating org.apache.druid.java.util.emitter.core.Emitter annotated with @com.google.inject.name.Named("prometheus")
at org.apache.druid.server.emitter.EmitterModule$EmitterProvider.inject(EmitterModule.java:133)Rohan Sharma
03/06/2024, 10:05 AMThis is my config
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druid.extensions.loadList=["druid-kafka-indexing-service","postgresql-metadata-storage","prometheus-emitter"]
##################################################
# Monitoring ( enable when using prometheus )
#################################################
druid.emitter=prometheus Copy code
druid.emitter.prometheus.port=9090t
Tapajit Chandra Paul
03/07/2024, 4:27 AMdid you include this config in
common.runtime Copy code
config[druid.monitoring.monitors] = "[]"Tapajit Chandra Paul
03/07/2024, 4:29 AM>>> any progress you made?
Not that much as I have already done the configuration shown in the course. There is an example
json2 Views