CREATIVE CHAOS blog
Duct-tape example of sticking together some hacks to display info of Strongswan ipsec information in Grafana.
Using custom python/shell scripts to collect the data (bytes in, bytes out, packets in, packets out, number of clients and their names from
ipsec statusall command):
#!/bin/bash STATUS=$(/usr/sbin/ipsec statusall) echo "$STATUS" | grep ESTABLISHED | sed 's/\[/ /g' | sed 's/\]/ / g' | tr -s " " | cut -d" " -f12 echo "$STATUS" | grep -e "bytes_i" | cut -d":" -f2 | sed 's/[^0-9 ]//g' | tr -s " " | cut -d" " -f3,4,6,7
#!/usr/bin/env python import commands stats = commands.getoutput('/opt/ipsec-stats/stats.sh') A = stats.splitlines() clients = A[:len(A)/2] stats = A[len(A)/2:] seznam = [list(a) for a in zip(clients, stats)] for i in seznam: print "ipsec,client="+i+" bytes_i="+i.split()+",bytes_o="+i.split()+",clients="+str(len(seznam))+",pkt_i="+i.split()+",pkt_o="+i.split()
Using telegraf and pushing data to InfluxDB.
First change the group of charon socket to
telegraf to give it permissions of reading the status. I have tried to allow user ’telegraf’ sudo the
ipsec command, but there was a mess of sudo alerts in logs. Then I had a cron job that run
ipsec statusall every minute as root and dumped the output to a text file that was then parsed. Bad idea, as data was old and obtained only once per minute. So I have settled for this hack. I believe you will need to do this everythime you reset ipsec service:
chgrp telegraf /var/run/charon.ctl
Call the python script in
inputs.exec block, so telegraf starts doing its magic.
# Read metrics from one or more commands that can output to stdout [[inputs.exec]] commands = [ "/opt/ipsec-stats/ipsec-telegraf.py" ] timeout = "5s" name_suffix = "_info" data_format = "influx"
Restart telegraf service:
service telegraf restart
Set up collection in Grafana, mine looks like this, use derivative, because the data is in fact a counter.
PS: Yeah, I have no idea why the data goes to negative values, got to check that out.