I'm trying to set up SNMP and MRTG on my SheevaPlug computer, and I can't quite get it to work. I've followed the guides like http://www.debianhelp.co.uk/mrtg.htm and http://jitamitra.blogspot.com/2009/02/snmp-and-mrtg-on-debian.html
...but the part that doesn't work is root@sheeva:/etc/snmp# indexmaker /etc/mrtg.cfg --columns=1 --output /var/www/mrtg/index.html Use of uninitialized value $first in hash element at /usr/bin/indexmaker line 353. root@sheeva:/etc/snmp# snmpwalk -v 1 -c public localhost IP-MIB::ipAdEntIfIndex MIB search path: /root/.snmp/mibs:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp Cannot find module (IP-MIB): At line 0 in (none) IP-MIB::ipAdEntIfIndex: Unknown Object Identifier root@sheeva:/etc/snmp# snmpwalk -v 1 -c public localhost system system: Unknown Object Identifier (Sub-id not found: (top) -> system)
Any suggestions?
Kevin
Do you have any mibs installed? Usually in /usr/share/snmp/mibs. It sounds like your system can't find the MIB files, or aren't using them.
The mib files are the rules that translate the name, such as system or IP-MIB::ipAdEntIfIndex, to an OID like .1.3.1.6.1.... http://mibdepot.comis a great place to find mibs, but you should be able to resolve system and stuff under IP-MIB without any vendor specific mibs.
In your snmpwalk command, try adding -m ALL to load all mibs, or passing in a directory with -M. It might be that you need to install the files. Stracing the process (strace -e trace=file indexmaker ....) might give you an idea of where it's looking for the mibs. Look for a file called IP-MIB.txt, which is where ipAdEntIfIndex is defined.
All that said, unless you're going to graph a couple of items and never plan to graph anything more, stay away from MRTG. Cacti is a lot friendlier.
Sean
On Thu, May 12, 2011 at 9:05 PM, Kevin McGregor kevin.a.mcgregor@gmail.comwrote:
I'm trying to set up SNMP and MRTG on my SheevaPlug computer, and I can't quite get it to work. I've followed the guides like http://www.debianhelp.co.uk/mrtg.htm and http://jitamitra.blogspot.com/2009/02/snmp-and-mrtg-on-debian.html
...but the part that doesn't work is root@sheeva:/etc/snmp# indexmaker /etc/mrtg.cfg --columns=1 --output /var/www/mrtg/index.html Use of uninitialized value $first in hash element at /usr/bin/indexmaker line 353. root@sheeva:/etc/snmp# snmpwalk -v 1 -c public localhost IP-MIB::ipAdEntIfIndex MIB search path: /root/.snmp/mibs:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp Cannot find module (IP-MIB): At line 0 in (none) IP-MIB::ipAdEntIfIndex: Unknown Object Identifier root@sheeva:/etc/snmp# snmpwalk -v 1 -c public localhost system system: Unknown Object Identifier (Sub-id not found: (top) -> system)
Any suggestions?
Kevin
Roundtable mailing list Roundtable@muug.mb.ca http://www.muug.mb.ca/mailman/listinfo/roundtable
Sigh. Solution (keep in mind this is on a SheevaPlug running Debian): add "contrib non-free" to the deb lines in /etc/apt/sources.list apt-get update apt-get install snmp-mibs-downloader
Then it basically works, although a small number of MIBs have errors. The MIBs are downloaded to /var/lib/mibs/ and linked to /usr/share/mibs/.
On Thu, May 12, 2011 at 9:15 PM, Sean Walberg sean@ertw.com wrote:
Do you have any mibs installed? Usually in /usr/share/snmp/mibs. It sounds like your system can't find the MIB files, or aren't using them.
The mib files are the rules that translate the name, such as system or IP-MIB::ipAdEntIfIndex, to an OID like .1.3.1.6.1.... http://mibdepot.comis a great place to find mibs, but you should be able to resolve system and stuff under IP-MIB without any vendor specific mibs.
In your snmpwalk command, try adding -m ALL to load all mibs, or passing in a directory with -M. It might be that you need to install the files. Stracing the process (strace -e trace=file indexmaker ....) might give you an idea of where it's looking for the mibs. Look for a file called IP-MIB.txt, which is where ipAdEntIfIndex is defined.
All that said, unless you're going to graph a couple of items and never plan to graph anything more, stay away from MRTG. Cacti is a lot friendlier.
Sean
On Thu, May 12, 2011 at 9:05 PM, Kevin McGregor < kevin.a.mcgregor@gmail.com> wrote:
I'm trying to set up SNMP and MRTG on my SheevaPlug computer, and I can't quite get it to work. I've followed the guides like http://www.debianhelp.co.uk/mrtg.htm and http://jitamitra.blogspot.com/2009/02/snmp-and-mrtg-on-debian.html
...but the part that doesn't work is root@sheeva:/etc/snmp# indexmaker /etc/mrtg.cfg --columns=1 --output /var/www/mrtg/index.html Use of uninitialized value $first in hash element at /usr/bin/indexmaker line 353. root@sheeva:/etc/snmp# snmpwalk -v 1 -c public localhost IP-MIB::ipAdEntIfIndex MIB search path: /root/.snmp/mibs:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp Cannot find module (IP-MIB): At line 0 in (none) IP-MIB::ipAdEntIfIndex: Unknown Object Identifier root@sheeva:/etc/snmp# snmpwalk -v 1 -c public localhost system system: Unknown Object Identifier (Sub-id not found: (top) -> system)
Any suggestions?
Kevin
Roundtable mailing list Roundtable@muug.mb.ca http://www.muug.mb.ca/mailman/listinfo/roundtable
-- Sean Walberg sean@ertw.com http://ertw.com/
Roundtable mailing list Roundtable@muug.mb.ca http://www.muug.mb.ca/mailman/listinfo/roundtable
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Sean Walberg