第 2 章 Monitoring your own services

You can use OpenShift Monitoring for your own services in addition to monitoring the cluster. This way, you do not need to use an additional monitoring solution. This helps keeping monitoring centralized. Additionally, you can extend the access to the metrics of your services beyond cluster administrators. This enables developers and arbitrary users to access these metrics.

注意

Custom Prometheus instances and the Prometheus Operator installed through Operator Lifecycle Manager (OLM) can cause issues with user-defined workload monitoring if it is enabled. Custom Prometheus instances are not supported in OpenShift Container Platform.

重要

Monitoring your own services is a Technology Preview feature only. Technology Preview features are not supported with Red Hat production service level agreements (SLAs) and might not be functionally complete. Red Hat does not recommend using them in production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.

For more information about the support scope of Red Hat Technology Preview features, see https://access.redhat.com/support/offerings/techpreview/.

2.1. Enabling monitoring of your own services

You can enable monitoring your own services by setting the techPreviewUserWorkload/enabled flag in the cluster monitoring config map.

Prerequisites

  • You have access to the cluster as a user with the cluster-admin role.
  • You have installed the OpenShift CLI (oc).
  • You have created the cluster-monitoring-config ConfigMap object.

Procedure

  1. Start editing the cluster-monitoring-config ConfigMap object: 

    $ oc -n openshift-monitoring edit configmap cluster-monitoring-config

  2. Set the techPreviewUserWorkload setting to true under data/config.yaml: 

    apiVersion: v1
kind: ConfigMap
metadata:
  name: cluster-monitoring-config
  namespace: openshift-monitoring
data:
  config.yaml: |
    techPreviewUserWorkload:
      enabled: true
  3. Save the file to apply the changes. Monitoring your own services is enabled automatically.

  4. Optional: You can check that the prometheus-user-workload pods were created: 

    $ oc -n openshift-user-workload-monitoring get pod

    Example output

    NAME                                   READY   STATUS        RESTARTS   AGE
prometheus-operator-6f7b748d5b-t7nbg   2/2     Running       0          3h
prometheus-user-workload-0             5/5     Running       1          3h
prometheus-user-workload-1             5/5     Running       1          3h
thanos-ruler-user-workload-0           3/3     Running       0          3h
thanos-ruler-user-workload-1           3/3     Running       0          3h

Additional resources