Кастомная метрика

Custom metric for Prometheus monitoring system

#!/bin/bash

# Adjust as needed.
#https://www.robustperception.io/using-the-textfile-collector-from-a-shell-script
TEXTFILE_COLLECTOR_DIR=/var/lib/node_exporter/textfile_collector/
# Note the start time of the script.

# Your code goes here.
sleep 10

# Write out metrics to a temporary file.
END="$(cat /var/log/cron | wc -l)"
cat << EOF > "$TEXTFILE_COLLECTOR_DIR/test.prom.$$"
test $END
EOF

# Rename the temporary file atomically.
# This avoids the node exporter seeing half a file.
mv "$TEXTFILE_COLLECTOR_DIR/test.prom.$$" \
  "$TEXTFILE_COLLECTOR_DIR/test.prom"