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stable/prometheus Updated README.md with instructions for configuring pod scraping (#19379)

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* Updated README.md with instructions for configuring pod scraping

Signed-off-by: Adam Pickering <adamkpickering@gmail.com>

* Updated chart version to latest.

Signed-off-by: Adam Pickering <adamkpickering@gmail.com>

* Bumped version to be in sync... again

Signed-off-by: Adam Pickering <adamkpickering@gmail.com>

* Bumped chart version

Signed-off-by: Adam Pickering <adamkpickering@gmail.com>

* Bumped version again

Signed-off-by: Adam Pickering <adamkpickering@gmail.com>
This commit is contained in:
adamkpickering
2020-01-08 16:23:40 -08:00
committed by Kubernetes Prow Robot
parent 0580e453e7
commit b17f7e798c
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stable/prometheus/Chart.yaml
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apiVersion: v1
name: prometheus
version: 9.7.4
version: 9.7.5
appVersion: 2.13.1
description: Prometheus is a monitoring system and time series database.
home: https://prometheus.io/
stable/prometheus/README.md
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@@ -90,6 +90,34 @@ Assuming you have an existing release of the prometheus chart, named `prometheus
Old data will be available when you query the new prometheus instance.
## Scraping Pod Metrics via Annotations
This chart uses a default configuration that causes prometheus
to scrape a variety of kubernetes resource types, provided they have the correct annotations.
In this section we describe how to configure pods to be scraped;
for information on how other resource types can be scraped you can
do a `helm template` to get the kubernetes resource definitions,
and then reference the prometheus configuration in the ConfigMap against the prometheus documentation
for [relabel_config](https://prometheus.io/docs/prometheus/latest/configuration/configuration/#relabel_config)
and [kubernetes_sd_config](https://prometheus.io/docs/prometheus/latest/configuration/configuration/#kubernetes_sd_config).
In order to get prometheus to scrape pods, you must add annotations to the the pods as below:
```
metadata:
annotations:
prometheus.io/scrape: "true"
prometheus.io/path: /metrics
prometheus.io/port: "8080"
spec:
...
```
You should adjust `prometheus.io/path` based on the URL that your pod serves metrics from.
`prometheus.io/port` should be set to the port that your pod serves metrics from.
Note that the values for `prometheus.io/scrape` and `prometheus.io/port` must be
enclosed in double quotes.
## Configuration
The following table lists the configurable parameters of the Prometheus chart and their default values.