grafanalib 0.1.2

Writing dashboards

The following will configure a dashboard with a single row, with one QPS graph broken down by status code and another latency graph showing median and 99th percentile latency:

import itertools

from grafanalib.core import *


GRAPH_ID = itertools.count(1)


dashboard = Dashboard(
  title="Frontend Stats",
  rows=[
    Row(panels=[
      Graph(
        title="Frontend QPS",
        dataSource='My Prometheus',
        targets=[
          Target(
            expr='sum(irate(nginx_http_requests_total{job="default/frontend",status=~"1.."}[1m]))',
            legendFormat="1xx",
            refId='A',
          ),
          Target(
            expr='sum(irate(nginx_http_requests_total{job="default/frontend",status=~"2.."}[1m]))',
            legendFormat="2xx",
            refId='B',
          ),
          Target(
            expr='sum(irate(nginx_http_requests_total{job="default/frontend",status=~"3.."}[1m]))',
            legendFormat="3xx",
            refId='C',
          ),
          Target(
            expr='sum(irate(nginx_http_requests_total{job="default/frontend",status=~"4.."}[1m]))',
            legendFormat="4xx",
            refId='D',
          ),
          Target(
            expr='sum(irate(nginx_http_requests_total{job="default/frontend",status=~"5.."}[1m]))',
            legendFormat="5xx",
            refId='E',
          ),
        ],
        id=next(GRAPH_ID),
        yAxes=[
          YAxis(format=OPS_FORMAT),
          YAxis(format=SHORT_FORMAT),
        ],
      ),
      Graph(
        title="Frontend latency",
        dataSource='My Prometheus',
        targets=[
          Target(
            expr='histogram_quantile(0.5, sum(irate(nginx_http_request_duration_seconds_bucket{job="default/frontend"}[1m])) by (le))',
            legendFormat="0.5 quantile",
            refId='A',
          ),
          Target(
            expr='histogram_quantile(0.99, sum(irate(nginx_http_request_duration_seconds_bucket{job="default/frontend"}[1m])) by (le))',
            legendFormat="0.99 quantile",
            refId='B',
          ),
        ],
        id=next(GRAPH_ID),
        yAxes=[
          YAxis(
            format=SECONDS_FORMAT,
          ),
          YAxis(
            format=SHORT_FORMAT,
            show=False,
          )
        ],
      ),
    ]),
  ],
)

There is a fair bit of repetition here, but once you figure out what works for your needs, you can factor that out. See our Weave-specific customizations for inspiration.

Generating dashboards

If you save the above as frontend.dashboard.py (the suffix must be .dashboard.py), you can then generate the JSON dashboard with:

$ generate-dashboard -o frontend.json frontend.dashboard.py

Installation

grafanalib is just a Python package, so:

$ pip install grafanalib

Support

This library is in its very early stages. We’ll probably make changes that break backwards compatibility, although we’ll try hard not to.

grafanalib works with Python 3.4 and 3.5.