sk8l/skål

Cronjob activity monitoring in k8s

Monitor your cronjobs activity. Use the exported prometheus metrics to get alerts when your cronjob fails, takes longer than expected or does not start when it should.

  • Get an overview of your cronjobs running in a namespace
  • See which cronjobs run more often
  • Get a quick glimpse of a cronjob, job or pod configuration via the UI
  • Use the exported prometheus metrics:
    • Total registered cronjobs
    • Total completed cronjobs
    • Total cronjobs failures
    • Amount of current running cronjobs
    • Total completions of a cronjobs
    • Current duration of a running cronjob
    • Total failures of a cronjob
  • Familiar UI, based on the open source Primer framework by github.

Screenshots

HELM Chart

          
helm repo add sk8l https://sk8l.io/charts
helm repo update

helm search repo sk8l

helm upgrade --install [RELEASE_NAME] sk8l/sk8l \
--set namespace=[NAMESPACE] \
--set serviceAccount.metadata.namespace=[NAMESPACE]

Prometheus metrics

sk8l exposes different Prometheus metrics that are listed below.

Cronjob metrics

Name Description
sk8l_[NAMESPACE]_registered_cronjobs_total Total registered cronjobs
sk8l_[NAMESPACE]_completed_cronjobs_total Total completed cronjobs
sk8l_[NAMESPACE]_failing_cronjobs_total Total cronjobs failures
sk8l_[NAMESPACE]_running_cronjobs_total Amount of current running cronjobs
sk8l_[NAMESPACE]_[CRONJOB_NAME]_completion_total Total completions of a cronjobs
sk8l_[NAMESPACE]_[CRONJOB_NAME]_duration_seconds Current duration of a running cronjob
sk8l_[NAMESPACE]_[CRONJOB_NAME]_failure_total Total failures of a cronjob

prometheus.yml configuration example

          
global:
  scrape_interval: 10s
scrape_configs:
  - job_name: sk8l-api-pod
    scheme: https
    tls_config:
      ca_file: "/etc/sk8l-certs/ca-cert.pem"
      cert_file: "/etc/sk8l-certs/server-cert.pem"
      # key: "/etc/sk8l-certs/server-key.pem"
      key_file: "/etc/sk8l-certs/server-key.pem"
      min_version: "TLS12"
      insecure_skip_verify: false
    kubernetes_sd_configs:
      - role: pod
    relabel_configs:
      - source_labels: [__meta_kubernetes_pod_annotation_sk8l_io_api_scrape_port]
        action: keep
        regex: (\d{4})
      - source_labels: [__address__, __meta_kubernetes_pod_annotation_sk8l_io_api_scrape_port]
        action: replace
        regex: ([^:]+)(?::\d+)?;(\d+)
        replacement: $1:$2
        target_label: __address__
https://github.com/danroux/sk8l-api https://github.com/danroux/sk8l-ui