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Era2004 · Beginner Joined: 24 Mar 2004 Posts: 8 Location: Russia

Hello,
I am junior Linux user,could someone explain me how Ii can give read rights to my localhost read information from my local SNMP server. I have FDC1 installed with running SNMP server. As I understood this step is necessary when you want to use Netmrg. Thanks for you help.

silfreed · Posted: Thu Mar 25, 2004 12:53 am Post subject:

Configuring SNMP isn't exactly obvious to the beginnger.

Read this thread:
http://lists.netmrg.net/viewtopic.php?p=128#128

and see if that gets you any farther along. If you still have questions, feel free to post back.

-Doug

Era2004 · Beginner Joined: 24 Mar 2004 Posts: 8 Location: Russia

Hello,
I just want that NetMRG work as I see on the test page on Project Home Page. So many questions but no answers. I want so solve problem with my home NetMRG step by step. First major question: Should I see some graphs if I first time successfully login in my web interface witout any problems? I do not see any graphs. I found the same question about my problem in forum, but i can not find the solutions.
Here is my report:

[root@server mibs]# /usr/bin/netmrg-gatherer -sm
NetMRG starting.
Start time is 1080232622
Creating Lockfile.
Initializing SNMP library.
Initializing RRDTOOL pipe.
[Dev: 0005] Starting device thread.
[Dev: 0005] MySQL connection established.
[Dev: 0005] Network / <Field Omitted>
[PASSIVE] Last: 0, Now: 1
[Dev: 0005] SNMP Uptime is 0
[Dev: 0005] Device is SNMP-dead. Avoiding SNMP tests.
[Dev: 0005] [Sub: 0004] Starting Subdevice.
[Dev: 0005] [Sub: 0004] Interface subdevice has no interface parameters.
[Dev: 0005] [Sub: 0004] Subdevice aborted due to previous errors.
[Dev: 0005] [Sub: 0005] Starting Subdevice.
[Dev: 0005] [Sub: 0005] Disk subdevice has no disk parameters.
[Dev: 0005] [Sub: 0005] Subdevice aborted due to previous errors.
[Dev: 0005] Trimming device event log.
[Dev: 0005] Ending device thread.
Thread Ended.
[PASSIVE] Last: 1, Now: 0
Closed MySQL connection.
Runtime: 5
Closed RRDTOOL pipe.
Cleaned up SNMP.
It seems that the problem is in SNMP configuration or maybe in RRDtools.How could I make sure that rrdtool work fine?

balleman · Site Admin Joined: 20 Jan 2003 Posts: 282

SNMP is either not working or misconfigured:

Era2004 · Beginner Joined: 24 Mar 2004 Posts: 8 Location: Russia

Hello Balleman,
Here is the out : SNMPv2-MIB::sysDescr.0 = STRING: Linux server 2.4.22-1.2174.nptl #1 Wed Feb 18 16:38:32 EST 2004 i686

I have the default config of the FedoraCore Linux. I did not change something.
####
# First, map the community name "public" into a "security name"

# sec.name source community
com2sec notConfigUser default public

####
# Second, map the security name into a group name:

# groupName securityModel securityName
group notConfigGroup v1 notConfigUser
group notConfigGroup v2c notConfigUser

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

# Make at least snmpwalk -v 1 localhost -c public system fast again.
# name incl/excl subtree mask(optional)
view systemview included .1
#view systemview included .1.3.6.1.2.1.1
#view systemview included .1.3.6.1.2.1.25.1.1
####
# Finally, grant the group read-only access to the systemview view.

# group context sec.model sec.level prefix read write notif
access notConfigGroup "" any noauth exact systemview none none

# -----------------------------------------------------------------------------
And what could be the reason with my graphs. I got the error when I try to view the image “http://localhost/netmrg/get_graph.php?type=mon&id=15” cannot be displayed, because it contains errors.

balleman · Site Admin Joined: 20 Jan 2003 Posts: 282

Ok, your snmp looks to work.

Please rerun the gatherer to check for the SNMP-Dead error:
/usr/bin/netmrg-gatherer -sm

Is the community string correct in your NetMRG configuration for your device?

To debug your broken graph, append "&debug=1" to the image (ie, get_graph) URL.

Era2004 · Beginner Joined: 24 Mar 2004 Posts: 8 Location: Russia

Hello, regarding the problem with charts. I have not .rdd files in my system.So my problem is that netmrg can not get information from my SNMP server therefore I have not rrd files. :(((((((((

balleman · Site Admin Joined: 20 Jan 2003 Posts: 282

Even if the SNMP tests fail, NetMRG should still be creating the RRD files. Does your NetMRG user have permissions to the /var/lib/netmrg/rrd/ directory? I did notice you ran the gatherer by hand as root, which could have created RRD files owned by root.

Era2004 · Beginner Joined: 24 Mar 2004 Posts: 8 Location: Russia

Here is my output from ls -la /usr/lib/netmrg/rrd.
drwxr-xr-x 2 netmrg netmrg 4096 Мар 20 01:32 .
drwxr-xr-x 3 root root 4096 Мар 20 01:32 ..
-rw-r--r-- 1 netmrg netmrg 71580 Мар 11 06:28 zero.rrd

This zero.rrd is the one file. I do not understand why I have not any rrd files except this file. Who and when sould create these files, how should I track this action.

Era2004 · Beginner Joined: 24 Mar 2004 Posts: 8 Location: Russia

[netmrg@server /]$ netmrg-gatherer
NetMRG starting.
[Dev: 0005] Starting device thread.
[Dev: 0005] Device is SNMP-dead. Avoiding SNMP tests.
[Dev: 0005] [Sub: 0004] Interface subdevice has no interface parameters.
[Dev: 0005] [Sub: 0004] Subdevice aborted due to previous errors.
[Dev: 0005] Ending device thread.
Thread Ended.