小企鵝開談 : [分享]SNMP & MRTG made in easy

/bin/cat -s > /foo/bar

/bin/su -

/usr/bin/mkdir /etc/mrtg
/usr/bin/mkdir /etc/cron.mrtg
/usr/bin/mkdir /var/www/localhost/mrtg
 

/bin/cat -s > /etc/snmp/snmpd.conf

com2sec local    127.0.0.1/32    public
com2sec local    10.10.10.0/24   public

group MyROGroup v1         local
group MyROGroup v2c        local
group MyROGroup usm        local

view  all   included  .1  80

access MyROGroup ""  any   noauth   exact  all   none   none

syslocation MyLocation
syscontact Me <me@somewhere.org>

-c /etc/snmp/snmpd.conf

/etc/init.d/snmpd start
/sbin/rc-update add snmpd default
 

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

/bin/cat -s > /etc/mrtg/cpu.cfg
WorkDir: /var/www/localhost/mrtg
LoadMIBs: /usr/share/snmp/mibs/UCD-SNMP-MIB.txt
Target[localhost.cpu]:ssCpuRawUser.0&ssCpuRawUser.0:public@localhost + ssCpuRawSystem.0&ssCpuRawSystem.
0:public@localhost + ssCpuRawNice.0&ssCpuRawNice.0:public@localhost
RouterUptime[localhost.cpu]: public@localhost
MaxBytes[localhost.cpu]: 100
Title[localhost.cpu]: CPU Load
PageTop[localhost.cpu]: 活動中的 CPU 負載 %
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

/bin/cat -s > /etc/mrtg/mem.cfg
LoadMIBs: /usr/share/snmp/mibs/HOST-RESOURCES-MIB.txt
Target[localhost.mem]: .1.3.6.1.4.1.2021.4.11.0&.1.3.6.1.4.1.2021.4.11.0:public@localhost
PageTop[localhost.mem]: <H1>Free Memory</H1>
WorkDir: /var/www/localhost/mrtg
Options[localhost.mem]: nopercent,growright,gauge,noinfo
Title[localhost.mem]: Free Memory
MaxBytes[localhost.mem]: 1000000
kMG[localhost.mem]: k,M,G,T,P,X
YLegend[localhost.mem]: bytes
ShortLegend[localhost.mem]: bytes
LegendI[localhost.mem]:  Free Memory:
LegendO[localhost.mem]:
Legend1[localhost.mem]: Free memory, not including swap, in bytes

/bin/cat -s > /etc/mrtg/swap.cfg
LoadMIBs: /usr/share/snmp/mibs/UCD-SNMP-MIB.txt
Target[localhost.swap]: memAvailSwap.0&memAvailSwap.0:public@localhost
PageTop[localhost.swap]: <H1>Swap Memory</H1>
WorkDir: /var/www/localhost/mrtg
Options[localhost.swap]: nopercent,growright,gauge,noinfo
Title[localhost.swap]: Free Memory
MaxBytes[localhost.swap]: 1000000
kMG[localhost.swap]: k,M,G,T,P,X
YLegend[localhost.swap]: bytes
ShortLegend[localhost.swap]: bytes
LegendI[localhost.swap]:  Free Memory:
LegendO[localhost.swap]:
Legend1[localhost.swap]: Swap memory avail, in bytes

/bin/cat -s > /etc/mrtg/ping.cfg
WorkDir: /var/www/localhost/mrtg
Title[localhost.ping]: Round Trip Time
PageTop[localhost.ping]: <H1>Round Trip Time</H1>
Target[localhost.ping]: `/etc/mrtg/ping.sh`
MaxBytes[localhost.ping]: 2000
Options[localhost.ping]: growright,unknaszero,nopercent,gauge
LegendI[localhost.ping]: Pkt loss %
LegendO[localhost.ping]: Avg RTT
Legend1[localhost.ping]: Maximum Round Trip Time in ms
Legend2[localhost.ping]: Minimum Round Trip Time in ms
Legend3[localhost.ping]: Maximal 5 Minute Maximum Round Trip Time in ms
Legend4[localhost.ping]: Maximal 5 Minute Minimum Round Trip Time in ms
YLegend[localhost.ping]: RTT (ms)

/bin/cat -s > /etc/cron.mrtg/traffic.sh
#!/bin/sh
/usr/bin/mrtg /etc/mrtg/traffic.cfg

/bin/cat -s > /etc/cron.mrtg/cpu.sh
#!/bin/sh
/usr/bin/mrtg /etc/mrtg/cpu.cfg

/bin/cat -s > /etc/cron.mrtg/mem.sh
#!/bin/sh
/usr/bin/mrtg /etc/mrtg/mem.cfg

/bin/cat -s > /etc/cron.mrtg/swap.sh
#!/bin/sh
/usr/bin/mrtg /etc/mrtg/swap.cfg

/bin/cat -s > /etc/cron.mrtg/ping.sh
#!/bin/sh
/usr/bin/mrtg /etc/mrtg/ping.cfg

/bin/cat -s > /etc/mrtg/ping.sh
#!/bin/sh
PING="/bin/ping"
# Google, for example
ADDR="google.com"
DATA=`$PING -c10 -s500 $ADDR -q `
LOSS=`echo $DATA | awk '{print $18 }' | tr -d %`
echo $LOSS
if [ $LOSS = 100 ]
then
               echo 0
else
        echo $DATA | awk -F/ '{print $5 }'
fi

/bin/chmod +x /etc/cron.mrtg/*.sh
/bin/chmod +x /etc/mrtg/ping.sh

/etc/cron.mrtg/traffic.sh
/etc/cron.mrtg/cpu.sh
/etc/cron.mrtg/mem.sh
/etc/cron.mrtg/swap.sh
/etc/cron.mrtg/ping.sh

/usr/bin/indexmaker --output=/var/www/localhost/mrtg/index.html
--title="Power Under Control :)"
--sort=name
--enumerate
/etc/mrtg/traffic.cfg
/etc/mrtg/cpu.cfg
/etc/mrtg/mem.cfg
/etc/mrtg/swap.cfg
/etc/mrtg/ping.cfg

/bin/cat >> /var/spool/cron/crontabs/root
*/5 * * * * /bin/run-parts /etc/cron.mrtg 1> /dev/null

/var/www/localhost/www/index.html

roberto@moira mrtg $ snmpwalk -v 1 -c public localhost mgmt.1.2.2.1.10.2
IF-MIB::ifInOctets.2 = Counter32: 140021440

roberto@moria mrtg $ snmptranslate -IR -Td mgmt.1.2.2.1.10.2
IF-MIB::ifInOctets.2
ifInOctets OBJECT-TYPE
  -- FROM       IF-MIB, RFC1213-MIB
  SYNTAX        Counter32
  MAX-ACCESS    read-only
  STATUS        current
  DESCRIPTION   "The total number of octets received on the interface,
            including framing characters.

            Discontinuities in the value of this counter can occur at
            re-initialization of the management system, and at other
            times as indicated by the value of
            ifCounterDiscontinuityTime."
::= { iso(1) org(3) dod(6) internet(1) mgmt(2) mib-2(1) interfaces(2) ifTable(2) ifEntry(1) ifInOctets(
10) 2 }

/usr/share/doc/net-snmp
/usr/share/doc/mrtg-*/contrib

- man mrtg
- man snmpd
- man snmpwalk
- man crontab
- man cat