How to test a TCP-connection
Sometimes it’s not enough to estimate the packet loss ratio only, but to make sure that a TCP-connections are stable. Run the “server” instance (sockping -m server -p 65513) on […]
monitoring
How to check all the sensors (a Nagios plugin)
Ever fancied a Nagios plugin to check all the sensors on the host without any hassle? Try this one, it collects all the sensors’ input values, compares it to their […]
How to monitor which files are growing faster than other ones?
If you ever needed a tool to get to know which files are growing faster than other ones, you probably will be quite satisfied with this simple bash-script.
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#!/bin/sh # Checking the spool directory SPOOL=/var/spool/diskhogs if [ ! -e "${SPOOL}" ]; then mkdir -p "${SPOOL}" fi if [ ! -d "${SPOOL}" ]; then echo "There are no ${SPOOL} directory" >&2 exit 1 fi if [ -z "${1}" ]; then DIR=. else DIR="${1}" fi FILES=$(find "${DIR}" -type f) TIME=$(date +%s) if [ -z "${TIME}" ]; then echo "Can't determine current time" >&2 exit 1 fi for FILE in ${FILES}; do SIZE=$(ls -nl ${FILE} | awk '{ print $5 }') if [ -z "${SIZE}" ]; then echo "Can't determine size of the ${FILE} file" >&2 continue fi sqlite3 "${SPOOL}/db" "INSERT INTO sizes VALUES ('${FILE}', '${TIME}', '${SIZE}');" if [ ${?} -ne 0 ]; then continue fi done for PERIOD in 60 300 600 1800 3600 86400; do TIME_WAS=$((${TIME} - ${PERIOD})) ( echo "*** Since $(date --date="@${TIME_WAS}") (${PERIOD} seconds ago) ***" sqlite3 \ "${SPOOL}/db" \ "SELECT MAX(size) - MIN(size) AS mm, name FROM sizes WHERE time >= '${TIME_WAS}' GROUP BY name ORDER BY mm ;" ) > "${SPOOL}/report_${PERIOD}" done |
Simply […]