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https://github.com/Security-Onion-Solutions/securityonion.git
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53 lines
2.0 KiB
Bash
53 lines
2.0 KiB
Bash
#!/bin/bash
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#
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# Copyright 2014,2015,2016,2017,2018,2019,2020 Security Onion Solutions, LLC
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This script returns the average of all the workers average capture loss to telegraf / influxdb in influx format include nanosecond precision timestamp
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APP=zeekcaploss
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lf=/tmp/$APP-pidLockFile
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# create empty lock file if none exists
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cat /dev/null >> $lf
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read lastPID < $lf
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# if lastPID is not null and a process with that pid exists , exit
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[ ! -z "$lastPID" -a -d /proc/$lastPID ] && exit
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echo $$ > $lf
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if [ -d "/host/nsm/zeek/spool/logger" ]; then
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WORKERS={{ salt['pillar.get']('sensor:zeek_lbprocs', salt['pillar.get']('sensor:zeek_pins') | length) }}
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ZEEKLOG=/host/nsm/zeek/spool/logger/capture_loss.log
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elif [ -d "/host/nsm/zeek/spool/zeeksa" ]; then
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WORKERS=1
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ZEEKLOG=/host/nsm/zeek/spool/zeeksa/capture_loss.log
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else
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echo 'Zeek capture_loss.log not found' >/dev/stderr
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exit 2
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fi
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LASTCAPTURELOSSLOG=/var/log/telegraf/lastcaptureloss.txt
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if [ -f "$ZEEKLOG" ]; then
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CURRENTTS=$(tail -1 $ZEEKLOG | jq .ts | sed 's/"//g')
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if [ -f "$LASTCAPTURELOSSLOG" ]; then
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LASTTS=$(cat $LASTCAPTURELOSSLOG)
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if [[ "$LASTTS" != "$CURRENTTS" ]]; then
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LOSS=$(tail -$WORKERS $ZEEKLOG | awk -F, '{print $NF}' | sed 's/}//' | awk -v WORKERS=$WORKERS -F: '{LOSS += $2 / WORKERS} END { print LOSS}')
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echo "zeekcaptureloss loss=$LOSS"
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fi
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fi
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echo "$CURRENTTS" > $LASTCAPTURELOSSLOG
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fi
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