Hi Javier,
You can use podTemplate to expose the port in the flink containers.
Here is a snippet:
spec:
flinkVersion: v1_15
flinkConfiguration:
state.savepoints.dir: file:///flink-data/flink-savepoints
state.checkpoints.dir: file:///flink-data/flink-checkpoints
metrics.reporter.prom.factory.class:
org.apache.flink.metrics.prometheus.PrometheusReporterFactory
serviceAccount: flink
podTemplate:
metadata:
annotations:
prometheus.io/path: /metrics
prometheus.io/port: "9249"
prometheus.io/scrape: "true"
spec:
serviceAccount: flink
containers:
- name: flink-main-container
volumeMounts:
- mountPath: /flink-data
name: flink-volume
ports:
- containerPort: 9249
name: metrics
protocol: TCP
volumes:
- name: flink-volume
emptyDir: {}
The bold line are about how to specify the metric reporter and expose the
metric. The annotations are not required if you use PodMonitor or
ServiceMonitor. Hope it can help!
Best,
Biao Geng
From: Javier Vegas <jve...@strava.com>
Date: Sunday, September 4, 2022 at 10:19 AM
To: user <user@flink.apache.org>
Subject: How to open a Prometheus metrics port on the rest service when using
the Kubernetes operator?
I am migrating my Flink app from standalone Kubernetes to the Kubernetes
operator, it is going well but I ran into a problem, I can not figure out how
to open a Prometheus metrics port in the rest-service to collect all my custom
metrics from the task managers. Note that this is different from the
instructions to "How to Enable Prometheus"
https://nightlies.apache.org/flink/flink-kubernetes-operator-docs-main/docs/operations/metrics-logging/#how-to-enable-prometheus-example
that example is to collect the operator pod metrics, but what I am trying to
do is open a port on the rest service to make my job metrics available to
Prometheus.
Thanks,
Javier Vegas
