Visualizing Pacemaker resource constraints

Tue 24 February 2015 by Lars Kellogg-Stedman Tags pacemaker visualization

If a picture is worth a thousand words, then code that generates pictures from words is worth...uh, anyway, I wrote a script that produces dot output from Pacemaker start and colocation constraints:

https://github.com/larsks/pacemaker-tools/

You can pass this output to graphviz to create visualizations of your Pacemaker resource constraints.

The graph-constraints.py script in that repository consumes the output of cibadmin -Q and can produce output for either start constraints (-S, the default) or colocation constraints (-C).

Given a document like this, if you run:

cibadmin -Q | 
python graph-constraints.py -o cib.svg

You get a graph like this:

Nodes are colored by their tag (so, primitive, clone, etc).


Comments