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Question

 Byron Collins (ByronC46)
Datacom

Datacom
NZ
ByronC46 Member since 2022 1 post
Datacom
Posted: Jul 5, 2022
Last activity: Oct 25, 2022
Posted: 5 Jul 2022 18:50 EDT
Last activity: 25 Oct 2022 3:17 EDT
Closed
Solved

running the prometheus java agent results in constant stream of errors from prometheus-http-1-3

We've enabled the built in prometheus agents on our pega containers built from docker.io/pega-ready:latest and we've notice that we get the following constant error messages every minute  when enabled.

2022-07-05 10:20:23,128 prometheus-http-1-3 ERROR Invalid URL pegajdbc://1977189075:0/adm7.jar!//log4j2.xml java.net.MalformedURLException: unknown protocol: pegajdbc

The java agent was enabled with the following environment variable

CATALINA_OPTS: "-javaagent:/opt/pega/prometheus/jmx_prometheus_javaagent.jar=9090:/opt/pega/prometheus/tomcat.yml"

When enabled, prometheus metrics are able to be scaped with curl http://localhost:9090/metrics

see attachments for tomcat.yml and the output from curl http://localhost:9090/metrics and the full error message

Regards Byron

 

 

 

 

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Posted: 2 years ago
Posted: 6 Jul 2022 3:08 EDT
SriHarsha Anika (SriHarsha Anika) Pega Lead System Architect
Pegasystems Inc.
IN

@ByronC46

Hi it has nothing to do with your configuration or any thing. it is a problem from the JMX bean exposed by apache log4j2. 

by default JMX exporter reads all the MBean's and its associated attributes and keep only the attributes that you need for viewing. part of this operation when apache log4j2 mbean attributes are being read , error is happening at ConfigLocationUri attribute (this is an editable) attribute and after reading that attribute, bean is trying to validate the information and landing in error. 

So you can ignore that error. 

JMX Apache bean issue

 

Thanks

 

 

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Posted: 2 years ago
Posted: 20 Oct 2022 0:37 EDT
Srinivas Kavala (SrinivasK6050)
Scope International,Standard Chartered Bank
Srinivas Kavala
Scope International,Standard Chartered Bank
MY

@ByronC46  Can someone advise me how to scrap Pega application metrics( non cloud V7.X,8.X) to Prometheus

i have posted question in community but no solution has been provided yet

How to expose application metrics to monioring frameworks like Prometheus,Grafana | Support Center (pega.com)

 

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