setting up JVM stats / monitoring for hudson?

[akos.maroy]

I was looking at this forum entry: http://forums.cacti.net/about19761.html

but I can't seem to get this working. I'm trying to monitor a hudson CI server - I fire it up using the following:

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 java -Dcom.sun.management.snmp.acl.file=snmp.acl -Dcom.sun.management.snmp.port=2000 -jar hudson.war

but interestingly I can't even access port 2000 aftewards:

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$ telnet localhost 2000
Trying 127.0.0.1...
telnet: Unable to connect to remote host: Connection refused

what am I doing wrong? probably something extremely trivial...

any help would be appreciated..

[jewel]

because of jvm snmp agent listen udp/2000

[akos.maroy]

because of jvm snmp agent listen udp/2000

oh, thank you..

what would be an easy way to verify that it does provide SNMP data?

sorry for the really newbie questions..

[jewel]

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snmpwalk -v 2c -c YOURCOMMUNITY -m /path/to/JVM-MANAGEMENT-MIB.mib localhost:2000 .

[akos.maroy]

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snmpwalk -v 2c -c YOURCOMMUNITY -m /path/to/JVM-MANAGEMENT-MIB.mib localhost:2000 .

and where would I get such a .mib file?

[jewel]

on the Sun documentation site:
http://java.sun.com/j2se/1.5.0/docs/gui ... NT-MIB.mib

[akos.maroy]

on the Sun documentation site:
http://java.sun.com/j2se/1.5.0/docs/gui ... NT-MIB.mib

thanks - now snmpwalk displays values fine:

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l$ snmpwalk -v 2c -c public -m etc/JVM-MANAGEMENT-MIB.mib localhost:2000 . | grep GC
JVM-MANAGEMENT-MIB::jvmMemoryGCVerboseLevel.0 = INTEGER: silent(1)
JVM-MANAGEMENT-MIB::jvmMemoryGCCall.0 = INTEGER: supported(2)
JVM-MANAGEMENT-MIB::jvmMemGCCount.2 = Counter64: 20
JVM-MANAGEMENT-MIB::jvmMemGCCount.3 = Counter64: 2
JVM-MANAGEMENT-MIB::jvmMemGCTimeMs.2 = Counter64: 114 milliseconds
JVM-MANAGEMENT-MIB::jvmMemGCTimeMs.3 = Counter64: 125 milliseconds

but, cacti still doesn't display a thing - the displayed results are either all zeros, or NaN's...

what is going wrong?