Added a node_exporter role initially built for...

peregrine.

promtools/Dockerfile

@@ -0,0 +1,22 @@
+FROM golang:1.9-stretch
+
+MAINTAINER Egon Rijpkema <e.m.a.rijpkema@rug.nl>
+
+RUN mkdir /results
+
+RUN go get github.com/prometheus/node_exporter && \
+    cd ${GOPATH-$HOME/go}/src/github.com/prometheus/node_exporter && \
+    make && \
+    cp node_exporter /results
+
+RUN go get github.com/robustperception/pushprox/proxy && \
+    cd ${GOPATH-$HOME/go}/src/github.com/robustperception/pushprox/proxy && \
+    go build && \
+    cp /go/bin/proxy /results
+
+RUN go get github.com/robustperception/pushprox/client && \
+    cd ${GOPATH-$HOME/go}/src/github.com/robustperception/pushprox/client && \
+    go build && \
+    cp /go/bin/client /results
+
+CMD /go/bin/proxy

promtools/addport.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+'''
+Pushprox:  does not include the port number in its targets json
+on the /clients endpoint. while Prometheus does seem to need it.
+
+for more info see: https://github.com/RobustPerception/PushProx
+'''
+
+import json
+from urllib import request
+
+url = 'http://knyft.hpc.rug.nl:6060/clients'
+outfile = 'targets.json'
+
+data = json.loads(request.urlopen(url).read().decode('utf-8'))
+
+targets = []
+
+for node in data:
+    for target in node['targets']:
+        if target[-5:] != '9100':
+            target = '{}:9100'.format(target)
+            targets.append(target)
+
+with open(outfile, 'w') as handle:
+    handle.write(json.dumps(
+        [{
+        "targets" : targets,
+        "labels": {
+            "env": "peregrine",
+            "job": "node"
+            }
+        }]
+        ,indent=4 ))

promtools/build.sh

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+#!/bin/bash -ex
+
+mkdir -p results
+docker build . -t promtools
+docker run -d --name promtools --rm promtools sleep 3
+docker cp promtools:/results .