Visualizing Pacemaker resource constraintsTue 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:
You can pass this output to graphviz to create visualizations of your Pacemaker resource constraints.
graph-constraints.py script in that repository consumes the
cibadmin -Q and can produce output for either start
-S, the default) or colocation constraints (
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,
Apache virtual host statistics
As part of a project I'm working on I wanted to get a rough idea of the activity of the Apache virtual hosts on the system. I wasn't able to find exactly what I wanted, so I refreshed my memory of curses to bring you vhoststats.
This tools reads an …read more