Warning
This repository has been archived because it has been obsoleted by ServiceMonitor and PodMonitor. See the Prometheus Operator Documentation for details.
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Merges Prometheus metrics from multiple sources.
Development Status exporter-merger is in an early development phase. Expect incompatible changes and abandoment at any time.
exporter-merger needs a configuration file. Currently, nothing but URLs are accepted:
exporters:
- url: http://localhost:9100/metrics
- url: http://localhost:9101/metricsTo start the exporter:
exporter-merger --config-path merger.yaml --listen-port 8080Alternatively configuration can be passed via environment variables, here is relevant part of exporter-merger -h output:
--listen-port int Listen port for the HTTP server. (ENV:MERGER_PORT) (default 8080)
--url stringSlice URL to scrape. Can be speficied multiple times. (ENV:MERGER_URLS,space-seperated)
The exporter-merger is supposed to run as a sidecar. Here is an example config with nginx-exporter:
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-nginx
labels:
app: my-nginx
spec:
selector:
matchLabels:
app: my-nginx
template:
metadata:
name: my-nginx
labels:
app: my-nginx
annotations:
prometheus.io/scrape: "true"
prometheus.io/port: "8080"
spec:
containers:
- name: "nginx"
image: "my-nginx" # nginx image with modified config file
volumeMounts:
- name: mtail
mountPath: /var/log/nginx/mtail
- name: nginx-exporter
image: quay.io/rebuy/nginx-exporter:v1.1.0
ports:
- containerPort: 9397
env:
- name: NGINX_ACCESS_LOGS
value: /var/log/nginx/mtail/access.log
- name: NGINX_STATUS_URI
value: http://localhost:8888/nginx_status
volumeMounts:
- name: mtail
mountPath: /var/log/nginx/mtail
- name: exporter-merger
image: quay.io/jkreileder/exporter-merger:v0.4.4
ports:
- name: metrics
containerPort: 8080
env:
# space-separated list of URLs
- name: MERGER_URLS
value: http://localhost:9000/prometheus/metrics http://localhost:9397/metrics
# default exposed port, change only if need other than default 8080
# - name: MERGER_PORT
# value: 8080
livenessProbe:
httpGet:
path: /alive
port: metrics
readinessProbe:
httpGet:
path: /alive
port: metrics- Allow transforming of metrics from backend exporters.
- eg add a prefix to the metric names
- eg add labels to the metrics
- Allow dynamic adding of exporters.
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