1.vi /etc/snmp/snmpd.conf, add scripts
extend .1.3.6.1.4.1.2021.50 tuhttp /bin/bash /opt/httpd2/conf/tuhttp.sh
2.vi tuhttp.sh
#!/bin/bash
num=$(ps -e |grep http|grep -v grep|grep -v jkhttp|wc -l)
#num=$(grep “ONLINE USERS=” /opt/photo/log/tu.log | sed ‘$!d’ | sed ’s/\(.*\)USERS=\([0-9]*\)$/\2/’)
echo $num
echo OK
ps: tu.log is my system log, ignore
3.reload snmpd
/etc/init.d/snmpd reload
4.check snmp info
snmpwalk -v 2c 10.30.0.22 -c public .1.3.6.1.4.1.2021.50
display:
UCD-SNMP-MIB::ucdavis.50.1.0 = INTEGER: 1
UCD-SNMP-MIB::ucdavis.50.2.1.2.6.116.117.104.116.116.112 = STRING: “/bin/bash”
UCD-SNMP-MIB::ucdavis.50.2.1.3.6.116.117.104.116.116.112 = STRING: “/opt/httpd2/conf/tuhttp.sh”
UCD-SNMP-MIB::ucdavis.50.2.1.4.6.116.117.104.116.116.112 = “”
UCD-SNMP-MIB::ucdavis.50.2.1.5.6.116.117.104.116.116.112 = INTEGER: 5
UCD-SNMP-MIB::ucdavis.50.2.1.6.6.116.117.104.116.116.112 = INTEGER: 1
UCD-SNMP-MIB::ucdavis.50.2.1.7.6.116.117.104.116.116.112 = INTEGER: 1
UCD-SNMP-MIB::ucdavis.50.2.1.20.6.116.117.104.116.116.112 = INTEGER: 4
UCD-SNMP-MIB::ucdavis.50.2.1.21.6.116.117.104.116.116.112 = INTEGER: 1
UCD-SNMP-MIB::ucdavis.50.3.1.1.6.116.117.104.116.116.112 = STRING: “3″
UCD-SNMP-MIB::ucdavis.50.3.1.2.6.116.117.104.116.116.112 = STRING: “3
OK”
UCD-SNMP-MIB::ucdavis.50.3.1.3.6.116.117.104.116.116.112 = INTEGER: 2
UCD-SNMP-MIB::ucdavis.50.3.1.4.6.116.117.104.116.116.112 = INTEGER: 0
UCD-SNMP-MIB::ucdavis.50.4.1.2.6.116.117.104.116.116.112.1 = STRING: “3″
UCD-SNMP-MIB::ucdavis.50.4.1.2.6.116.117.104.116.116.112.2 = STRING: “OK”
ps:we need .1.3.6.1.4.1.2021.50.3.1.1.6.116.117.104.116.116.112
5.add cacti data templates
Console -> Data Templates
6.add cacti graph templates
Console -> Graph Templates
7.add these templates to host
Console -> Devices -> Create Graphs for this Host
8.All Done
refer: http://bbs.linuxtone.org/thread-1372-1-1.html