This module installs Prometheus Pushgateway into the cluster. It gets metrics from the app and pushes them to Prometheus.
Additional information:
Example of using PushGateway
PushGateway address: http://first.kube-prometheus-pushgateway:9091
.
Pushing a metric using curl
# echo "test_metric 3.14" | curl --data-binary @- http://first.kube-prometheus-pushgateway:9091/metrics/job/app
The metrics will be available in Prometheus in 30 seconds (after the data are scraped):
test_metric{instance="10.244.1.155:9091",job="app",pushgateway="first"} 3.14
Caution! The job value must be unique in Prometheus to preserve the consistency of the existing graphs and alerts. Use the following query to get a list of all existing jobs: count({__name__=~".+"}) by (job)
.
Deleting all metrics of a group {instance="10.244.1.155:9091",job="app"}
using curl
# curl -X DELETE http://first.kube-prometheus-pushgateway:9091/metrics/job/app/instance/10.244.1.155:9091
Since PushGateway stores the scraped metrics in memory, all metrics will be lost when the Pod is restarted.