cacti, traffic stats and snmp

vimico · 11-01-2005, 11:21 AM

Hi,

I'm trying to create a traffic statistic in cacti for the interfaces of my linux box. (Debian Sarge, testing).

I'm following the How-To on the cacti homepage, which is not that clear for someone new to snmp.

My current problem is, that snmp does not return the interfaces available on that box.

Installed by now are net snmp, libsensors3 and libsnmp5.

With

Code:

 snmpwalk -c public -v 2c localhost

I get some info back.

When I follow the cacti howto, at some point when creating a graph, a list of devices should be displayed. But none is found. In debug mode, this message is shown:

Code:

+ Executing SNMP walk for list of indexes @ '.1.3.6.1.2.1.2.2.1.1'
+ No SNMP data returned

and

Code:

 snmpwalk -c public -v 2c localhost .1.3.6.1.2.1.2.2.1.1

returns

Code:

IF-MIB:ifIndex = No such Object available on this agent at this OID

Any config info I should know about, or any libs that still have to be installed?

Thanks

acid_kewpie · 11-01-2005, 11:29 AM

that oid should list your interfaces. e.g.

Code:

chris@kermit ~ $ snmpwalk -v 2c -c public localhost .1.3.6.1.2.1.2.2.1.1
IF-MIB::ifIndex.1 = INTEGER: 1
IF-MIB::ifIndex.2 = INTEGER: 2

so i have two interfaces, which further down the line would be found to be eth0 and lo. that's gonna be an issue on the snmp server, not cacti or anything further down the line. this may well have been restricted via the snmpd.conf or such like.

vimico · 11-01-2005, 01:22 PM

Quote:

Originally posted by acid_kewpie
that oid should list your interfaces...

Yeah.. I know.

Quote:

Originally posted by vimico
My current problem is, that snmp does not return the interfaces available on that box.

But all I get is the error message mentioned above....

All config files are those created by Debian on install. Perhaps some settings might be changed... I don't know.

acid_kewpie · 11-01-2005, 04:13 PM

well post your snmpd.conf and we;ll ahve a look

vimico · 11-02-2005, 04:05 AM

Quote:

Originally posted by acid_kewpie
well post your snmpd.conf and we;ll ahve a look

This is - apart from the syslocation info - the config file that was installed by Debian Sarge. I removed most of the comments.

Code:

# Access Control

####
# First, map the community name (COMMUNITY) into a security name
# (local and mynetwork, depending on where the request is coming
# from):

#       sec.name  source          community
com2sec paranoid  default         public
#com2sec readonly  default         public
#com2sec readwrite default         private

####
# Second, map the security names into group names:

#             	sec.model  sec.name
group MyROSystem v1        paranoid
group MyROSystem v2c       paranoid
group MyROSystem usm       paranoid
group MyROGroup v1         readonly
group MyROGroup v2c        readonly
group MyROGroup usm        readonly
group MyRWGroup v1         readwrite
group MyRWGroup v2c        readwrite
group MyRWGroup usm        readwrite

####
# Third, create a view for us to let the groups have rights to:

#           incl/excl subtree                          mask
view all    included  .1                               80
view system included  .iso.org.dod.internet.mgmt.mib-2.system

####
# Finally, grant the 2 groups access to the 1 view with different
# write permissions:

#                context sec.model sec.level match  read   write  notif
access MyROSystem ""     any       noauth    exact  system none   none
access MyROGroup ""      any       noauth    exact  all    none   none
access MyRWGroup ""      any       noauth    exact  all    all    none

# -----------------------------------------------------------------------------


###############################################################################
# System contact information
#

syslocation My new computer 
syscontact <mike@localhost> 


###############################################################################
# Process checks.
#

###############################################################################
# Executables/scripts
#

###############################################################################
# disk checks
#

###############################################################################
# load average checks
#

###############################################################################
# Extensible sections.
# 

###############################################################################
# Pass through control.
# 


###############################################################################
# Subagent control
#

#
#  master  agentx
#

Thank you for your help.

acid_kewpie · 11-02-2005, 05:17 AM

ok, so the public community name is mapped to a "paranoid"group, not a read-only group. i reckon if you comment out that com2sec line, and uncomment the Read-Only line below it, you'll get the sata just just, as you can see the paranois one details "system" info only, while the read-only one provides all data.

vimico · 11-02-2005, 08:09 PM

Yes.. that did it.

Thank you very much.

sbtiwari · 07-13-2009, 11:46 AM

Hi,

I am sorry if I am being too silly. But my issue is this.

I have a server X which I am trying to monitor using cacti on server Y. I have edited the snmpd.conf file on the X as shown above. But the problem still persists i.e. on cacti when I run the query in verbose mode I get the following output,

+ Running data query [1].
+ Found type = '3' [snmp query].
+ Found data query XML file at '/usr/share/cacti/site/resource/snmp_queries/interface.xml'
+ XML file parsed ok.
+ Executing SNMP walk for list of indexes @ '.1.3.6.1.2.1.2.2.1.1'
+ No SNMP data returned
+ Found data query XML file at '/usr/share/cacti/site/resource/snmp_queries/interface.xml'
+ Found data query XML file at '/usr/share/cacti/site/resource/snmp_queries/interface.xml'
+ Found data query XML file at '/usr/share/cacti/site/resource/snmp_queries/interface.xml'

Now when I run the following command on X, I get the following output.

$ snmpwalk -c public -v 2c localhost .1.3.6.1.2.1.2.2.1.1
IF-MIB::ifIndex.1 = INTEGER: 1
IF-MIB::ifIndex.2 = INTEGER: 2
IF-MIB::ifIndex.3 = INTEGER: 3

I am not sure why am I getting the following errors. Can anyone please guide me through this. Any help would be appreciated.

Thanks,
Swati

sbtiwari · 07-13-2009, 12:30 PM

I found the answer, all my settings were right but in cacti, on the devices page, for some reason, I had not selected the snmp version which had created the problem.

Sorry,

Cheers,
Swati

acid_kewpie · 07-13-2009, 12:31 PM

please don't drag up dead threads. Let them rest in peace and start your own thread if need be.

sbtiwari · 07-13-2009, 12:35 PM

I apologize, I am not aware of the etiquette here. Will remember this. Thank you.