Freifunk-Gateway aufsetzen/Statistik/mrtg

snmpd und mrtg installieren.

/etc/snmp/snmpd.conf: systemonly auskommentiert

 rocommunity public  default    #-V systemonly
 rocommunity6 public  default   #-V systemonly

snmpd restarten.

Ordner anlegen:

mkdir /etc/mrtg
mkdir /var/www/mrtg

Die mrtg CPU Config neu anlegen: vi /etc/mrtg/cpu.cfg und folgendes einfügen:

LoadMIBs: /usr/share/snmp/mibs/UCD-SNMP-MIB.txt
WorkDir: /var/www/mrtg
Target[localhost.cpu]:ssCpuRawUser.0&ssCpuRawUser.0:public@127.0.0.1 + ssCpuRawSystem.0&ssCpuRawSystem.0:public@127.0.0.1 + ssCpuRawNice.0&ssCpuRawNice.0:public@127.0.0.1 + ssCpuRawSoftIRQ.0&ssCpuRawSoftIRQ.0:public@127.0.0.1 + ssCpuRawInterrupt.0&ssCpuRawInterrupt.0:public@127.0.0.1 + ssCpuRawKernel.0&ssCpuRawKernel.0:public@127.0.0.1
RouterUptime[localhost.cpu]: public@127.0.0.1
MaxBytes[localhost.cpu]: 100
Title[localhost.cpu]: CPU Load
PageTop[localhost.cpu]: <h1>Active CPU Load %</h1>
Unscaled[localhost.cpu]: ymwd
ShortLegend[localhost.cpu]: %
YLegend[localhost.cpu]: CPU Utilization
Legend1[localhost.cpu]: Active CPU in % (Load)
Legend2[localhost.cpu]:
Legend3[localhost.cpu]:
Legend4[localhost.cpu]:
LegendI[localhost.cpu]:  Active
LegendO[localhost.cpu]:
Options[localhost.cpu]: growright,nopercent

Die mrtg dhcp config neu anlegen: vi /etc/mrtg/dhcp.cfg und folgendes einfügen:

WorkDir: /var/www/mrtg
Title[dhcpleasecount]: DHCP-Leases
PageTop[dhcpleasecount]: <H1>DHCP-Leases</H1>
Options[dhcpleasecount]: gauge,nopercent,growright,noinfo
Target[dhcpleasecount]: `/etc/mrtg/dhcp.sh`
MaxBytes[dhcpleasecount]: 255
YLegend[dhcpleasecount]: Lease Count
ShortLegend[dhcpleasecount]: x
Unscaled[dhcpleasecount]: ymwd
LegendI[dhcpleasecount]: Count
LegendO[dhcpleasecount]:

Hier muss der MaxBytes Parameter auf die maximale Zahl der DHCP Leases eingestellt werden.

Anschließend noch das Script anlegen: vi /etc/mrtg/dhcp.sh
chmod +x /etc/mrtg/dhcp.sh

#!/bin/bash

# -> zutreffendes auskommentieren
# isc-dhcp-server
#leasecount=$(/usr/sbin/dhcp-lease-list --parsable --lease /var/lib/dhcp/dhcpd.leases 2>&1  |wc -l)
# dnsmasq
#leasecount=$(cat /var/lib/misc/bat0.leases | wc -l)

echo "$leasecount"
echo "$leasecount"
echo 0
echo 0

Die mrtg traffic Config neu anlegen:

/usr/bin/cfgmaker --output=/etc/mrtg/traffic.cfg -zero-speed=100000000 --global "WorkDir: /var/www/mrtg" --ifdesc=name,ip,desc,type --ifref=name,desc --global "Options[_]: bits,growright" public@localhost 

sed -i -e 's/^\(MaxBytes.*\)$/\10/g' /etc/mrtg/traffic.cfg

Den mrtg Index neu machen:

/usr/bin/indexmaker --output=/var/www/mrtg/index.html --title="$(hostname)" --sort=name --enumerat /etc/mrtg/traffic.cfg /etc/mrtg/cpu.cfg /etc/mrtg/dhcp.cfg

Den eigenen Index neu machen:

cat /var/www/mrtg/index.html | sed -e 's/SRC="/SRC="mrtg\//g' -e 's/HREF="/HREF="mrtg\//g' > /var/www/index.html 

Crontab:

*/1 *  *   *   *     env LANG=C /usr/bin/mrtg /etc/mrtg/cpu.cfg > /dev/null 2>&1
*/1 *  *   *   *     env LANG=C /usr/bin/mrtg /etc/mrtg/traffic.cfg > /dev/null 2>&1
*/1 *  *   *   *     env LANG=C /usr/bin/mrtg /etc/mrtg/dhcp.cfg > /dev/null 2>&1