// Aula 10 - Conhecendo as métricas - parte 4

# mkdir /etc/prometheus/textfile

# vim /etc/prometheus/textfile/teste.prom 

# HELP teste_arquivo
# TYPE metrica_para_teste gauge
teste_metrica 10

# chown -R prometheus:prometheus /etc/prometheus/textfile

# vim /etc/systemd/system/node_exporter.service

ExecStart=/usr/local/bin/node_exporter --collector.textfile.directory=/etc/prometheus/textfile/

# systemctl daemon-reload
# systemctl restart node_exporter

# HELP teste_metrica Metric read from /etc/prometheus/textfile/teste.prom
# TYPE teste_metrica untyped
teste_metrica 10

# mkdir -p /etc/prometheus/shell

# vim directory-size.sh

#!/bin/sh
# directory-size.sh
#
# Expose directory usage metrics, passed as an argument.
#
# Usage: add this to crontab:
#
# */1 * * * * bash directory-size.sh /var/lib/prometheus | sponge /etc/prometheus/textfile/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 node_directory_size_bytes Disk space used by some directories"
echo "# TYPE node_directory_size_bytes gauge"
du --block-size=1 --summarize "$@" | sed -ne 's/\\/\\\\/;s/"/\\"/g;s/^\([0-9]\+\)\t\(.*\)$/node_directory_size_bytes{directory="\2"} \1/p'

RHEL 9

# dnf install epel-release -y
# dnf config-manager --set-enabled crb
# dnf install moreutils

Ubuntu:

# sudo apt-get install moreutils

# bash directory-size.sh /var/lib/prometheus | sponge /etc/prometheus/textfile/directory_size.prom

# cat /etc/prometheus/textfile/directory_size.prom

node_directory_size_bytes

# crontab -e

*/1 * * * * bash /etc/prometheus/shell/directory-size.sh /var/lib/prometheus | sponge /etc/prometheus/textfile/directory_size.prom

https://github.com/prometheus-community/node-exporter-textfile-collector-scripts