Not getting metrics for FirstMessageAge using JMX Exporter in Activemq Artemis

[priyabrat-mishra]

Hi Team,

We are not getting Prometheus metrics for the below pattern . We just need the value of FirstMessageAge value for Queues/Topics .

^org.apache.activemq.artemis<broker="([^\"])",\scomponent=addresses,\saddress="([^\"])",\ssubcomponent=queues,\srouting-type="([^\"])",\squeue="([^\"]*)"><>FirstMessageAge

Currently we are using the below pattern, but its sending all the metrics for the queues/topics .

"^org.apache.activemq.artemis<broker="([^\"])",\scomponent=addresses,\saddress="([^\"])",\ssubcomponent=(queue|topic)s,\srouting-type="([^\"])",\s(queue|topic)="([^\"])"><>([^: ]):\s(.*)"

[dhoard]

@priyabrat-mishra which version of the exporter are you using?

[priyabrat-mishra]

@dhoard We are using version 0.19.0 . The jar file jmx_prometheus_javaagent-0.19.0.jar is used .

[priyabrat-mishra]

@dhoard Could you please provide the pattern which can send only the metric first_message_age . We tried with many options, but nothing working . Below is the latest one used .

• pattern: "^org.apache.activemq.artemis<broker="([^\"])",\scomponent=addresses,\saddress="([^\"])",\ssubcomponent=(queue|topic)s,\srouting-type="([^\"])",\s(queue|topic)="([^\"])"><>.age.:\s(.)"
  attrNameSnakeCase: true
  name: artemis_$7
  type: COUNTER
  labels:
  address: $2
  "$5": $6
  name: $1
  version:
  routingType: $4

[dhoard]

@priyabrat-mishra some questions...

1. if you use rules ".*" do you see FirstMessageAge?

2. if you use "^org.apache.activemq.artemis<broker="([^\"])",\scomponent=addresses,\saddress="([^\"])",\ssubcomponent=(queue|topic)s,\srouting-type="([^\"])",\s(queue|topic)="([^\"])"><>([^: ]):\s(.*)" do you see FirstMessageAge?

[priyabrat-mishra]

@dhoard

Yes, in both cases , we are getting the metrics for first_message_age . But our requirement is to get only first_message_age metrics , not other metrics . We tried with the below pattern , but the $7 is replaced with the value of the metric . Could you please let us know if there is correction needed for the below pattern .

• pattern: "^org.apache.activemq.artemis<broker="([^\"])",\scomponent=addresses,\saddress="([^\"])",\ssubcomponent=(queue|topic)s,\srouting-type="([^\"])",\s(queue|topic)="([^\"])"><>.first.:\s(.)"
  attrNameSnakeCase: true
  name: artemis_$7
  type: COUNTER
  labels:
  address: $2
  "$5": $6
  name: $1
  version:
  routingType: $4

Metric got for the above is as below .

artemis_253419677{queue="TEST.QUEUE.3",address="TEST.QUEUE.3",name="sq1107-statefulset-0",routingtype="anycast",version="Apache ActiveMQ Artemis 2.32.0",} 2.53419677E8

[dhoard]

Since you are matching a specific value, you should be able to set the name to a constant value.

name: artemis_first_message_age

[priyabrat-mishra]

@dhoard what is the pattern should we use for that as just putting the name is not sending any value for that metrics

[dhoard]

@priyabrat-mishra the literal.

name: artemis_first_message_age

From the README...

name	The metric name to set. Capture groups from the pattern can be used. If not specified, the default format will be used. If it evaluates to empty, processing of this attribute stops with no output. An Additional suffix may be added to this name (e.g _total for type COUNTER)