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add sample directory size exporter (#789)

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* add sample directory size exporter

This is a possible workaround for the lack of metrics in the new
storage backend, as documented in:

https://github.com/prometheus/prometheus/issues/3684

Partly inspired by this post as well:

https://www.robustperception.io/monitoring-directory-sizes-with-the-textfile-collector/

* properly escape backslashes and double-quotes
This commit is contained in:
anarcat 2018-02-21 10:24:48 -05:00 committed by Ben Kochie
parent e0d54a509c
commit 79ae03c4c7
1 changed files with 15 additions and 0 deletions
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15
text_collector_examples/directory-size.sh Executable file
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#!/bin/sh
#
# Expose directory usage metrics, passed as an argument.
#
# Usage: add this to crontab:
#
# */5 * * * * prometheus directory-size.sh /var/lib/prometheus | sponge /var/lib/node_exporter/directory_size.prom
#
# sed pattern taken from https://www.robustperception.io/monitoring-directory-sizes-with-the-textfile-collector/
#
# Author: Antoine Beaupré <anarcat@debian.org>
echo "# HELP anarcat_dir_space_bytes Disk space used by some directories"
echo "# TYPE anarcat_dir_space_bytes gauge"
du --block-size=1 --summarize "$@" \
| sed -ne 's/\\/\\\\/;s/"/\\"/g;s/^\([0-9]\+\)\t\(.*\)$/node_directory_size_bytes{directory="\2"} \1/p'