snmpd und mrtg installieren.
/etc/snmp/snmpd.conf: systemonly auskommentiert
rocommunity public default #-V systemonly rocommunity6 public default #-V systemonly
snmpd restarten.
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 leasecount=$(/usr/sbin/dhcp-lease-list --parsable --lease /var/lib/dhcp/dhcpd.leases 2>&1 |wc -l) echo "$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' -e 's/<\/H1>/<\/H1><img src="topology.png">/g' > /var/www/index.html
/etc/olsrd/dotDraw.pl:
#!/usr/bin/perl
use IO::Socket;
$TOPPATH = "/var/www";
$NAME = "topology";
$FILENAME = "$TOPPATH/$NAME.dot";
$EXT = "png";
`touch $TOPPATH/$NAME.$EXT`;
$remote = IO::Socket::INET->new(
Proto => "tcp",
PeerAddr => "localhost",
PeerPort => "2004",
)
or die "cannot connect to daytime port at localhost";
$f;
while ( <$remote> ) {
$line = $_;
if ( m/^[\{\\}]$|digraph|topology|^"10\.50\..*" -> "10\.50.*"|^"10\.50\.[0-9]+\.[0-9\/]+"\[/) {
$f = $f . $line;
}
if ( $line =~ /}/i ) {
print "* ";
open DOTFILE, ">$FILENAME";
print DOTFILE $f;
close DOTFILE;
$f = "";
`neato -Tpng -Gsize=9,6 -Gbgcolor=white -Gsplines=true -Nstyle=filled -Nfontsize=15 -Ncolor=black -Nfillcolor=white -Nfontname=verdana -Ecolor=black -Elen=4 -Earrowsize=2 $FILENAME -o $TOPPATH/$NAME.new`;
`mv $TOPPATH/$NAME.new $TOPPATH/$NAME.$EXT`;
`cp $TOPPATH/$NAME.dot $TOPPATH/$NAME-\$(date +'%Y-%m-%d-%H-%M-%S').dot`;
exit;
}
}
/etc/olsrd/olsrd.conf:
LoadPlugin "olsrd_dot_draw.so.0.3"
{
}
eventuell wird noch "graphviz" benötigt um die png zu zeichnen:
apt-get install graphviz
Crontab:
*/5 * * * * perl /etc/olsrd/dotDraw.pl > /dev/null 2>&1 */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
