Chapter 5. Monitoring CodeReady Workspaces

This chapter describes how to configure CodeReady Workspaces to expose metrics and how to build an example monitoring stack with external tools to process data exposed as metrics by CodeReady Workspaces.

5.1. Enabling and exposing CodeReady Workspaces metrics

This section describes how to enable and expose CodeReady Workspaces metrics.

Procedure

  1. Set the CHE_METRICS_ENABLED=true environment variable, which will expose the 8087 port as a service on the che-master host.

When Red Hat CodeReady Workspaces is installed from the OperatorHub, the environment variable is set automatically if the default CheCluster CR is used:

monitoring che che cluster cr
spec:
  metrics:
    enable: true

5.2. Collecting CodeReady Workspaces metrics with Prometheus

This section describes how to use the Prometheus monitoring system to collect, store and query metrics about CodeReady Workspaces.

Prerequisites

Procedure

  • Configure Prometheus to scrape metrics from the 8087 port:

    Example 5.1. Prometheus configuration example

    apiVersion: v1
kind: ConfigMap
metadata:
  name: prometheus-config
data:
  prometheus.yml: |-
      global:
        scrape_interval:     5s             1
        evaluation_interval: 5s             2
      scrape_configs:                       3
        - job_name: 'che'
          static_configs:
            - targets: ['[che-host]:8087']  4
    1
    Rate, at which a target is scraped.
    2
    Rate, at which recording and alerting rules are re-checked (not used in the system at the moment).
    3
    Resources Prometheus monitors. In the default configuration, there is a single job called che, which scrapes the time series data exposed by the CodeReady Workspaces server.
    4
    Scrape metrics from the 8087 port.

Verification steps

  • Use the Prometheus console to query and view metrics.

    Metrics are available at: http://<che-server-url>:9090/metrics.

    For more information, see Using the expression browser in the Prometheus documentation.

Additional resources