Issues getting cacti to graph from a snmp table

vortico · Post by **vortico** » Thu Jun 12, 2008 10:58 am

I also posted this under the HowTo Section in the following thread (which I had tried to follow to do this) http://forums.cacti.net/viewtopic.php?t=11647

Hello all, having issues getting this to work in my particular case. I am trying to get a table of information from a load balancer and graph the active connections and transfer rate information in cacti. I tried following the how to the best I could, the images are mostly gone and its possible I missed a setting somewhere in there if it was checked in the image but no mention of it was made in the text.

Anyway the other issue that exists is there is no nice and easy index like in the example. None of the table entries specify a real index number. I'll post the table/walk and my xml below and what I have done to try to get it to work.

Code: Select all

snmptable -v2c 10.7.2.190 -m ALL .1.3.6.1.4.1.12196.12.2
SNMP table: IPVS-MIB::ipvsRSTable

rSVSidx                 rSDesc rSConns rSInPkts rSOutPkts  rSInBytes  rSOutBytes rSActiveConns rSInactiveConns rSWeight
       0      "10.7.3.24:80  0"   42891  4789869   6043401  884800570  7069382255            65              32     1000
       0      "10.7.3.25:80  0"   51042  7284484   9007608 1634443622 10354617790             0               0     1000
       0      "10.7.3.26:80  0"   10731   609168    663503  150607886   694458104             2               2     1000
       0      "10.7.3.27:80  0"    8438   437582    466524   89117188   496339071             5               1     1000
       0      "10.7.3.28:80  0"   14802  1548995   2305933  641205864  2721785469             6               0     1000
       0      "10.7.3.29:80  0"    8884   439525    470757   99461755   514629001             9              11     1000
       0      "10.7.3.30:80  0"    4677   280089    326477   48829737   365153253             0               0     1000
       1      "10.7.3.24:80  0"      33     1655      2256     223604     2755637             0               0     1000
       1      "10.7.3.25:80  0"     171     6773      9710    1257452    11818896             0               0     1000
       2 "10.7.3.14:443 Masq 0"     516  5541178   7354382  266144096  2349993137            16               0     1000
       2 "10.7.3.15:443 Masq 0"     455  4947440   6467919  236864381  1920543903            17               0     1000
       2 "10.7.3.16:443 Masq 0"     511  5253701   7548277  244424731  2433626351            16               0     1000
       3      "10.7.3.31:80  0"      21     1610      1941     421697     1865476             0               0     1000
       4 "10.7.3.17:443 Masq 0"       3       77        90       4802       17251             0               0     1000
       ?                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?
       0                      ?       ?        ?         ?          ?           ?             ?               ?        ?

snmpwalk -v2c -On 10.7.2.189 -m All .1.3.6.1.4.1.12196.12.2

Code: Select all

.1.3.6.1.4.1.12196.12.2.1.1.1 = INTEGER: 0
.1.3.6.1.4.1.12196.12.2.1.1.2 = INTEGER: 0
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.1.3.6.1.4.1.12196.12.2.1.1.4 = INTEGER: 0
.1.3.6.1.4.1.12196.12.2.1.1.5 = INTEGER: 0
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.1.3.6.1.4.1.12196.12.2.1.1.13 = INTEGER: 3
.1.3.6.1.4.1.12196.12.2.1.1.14 = INTEGER: 4
.1.3.6.1.4.1.12196.12.2.1.11.1 = STRING: "10.7.3.24:80  0"
.1.3.6.1.4.1.12196.12.2.1.11.2 = STRING: "10.7.3.25:80  0"
.1.3.6.1.4.1.12196.12.2.1.11.3 = STRING: "10.7.3.26:80  0"
.1.3.6.1.4.1.12196.12.2.1.11.4 = STRING: "10.7.3.27:80  0"
.1.3.6.1.4.1.12196.12.2.1.11.5 = STRING: "10.7.3.28:80  0"
.1.3.6.1.4.1.12196.12.2.1.11.6 = STRING: "10.7.3.29:80  0"
.1.3.6.1.4.1.12196.12.2.1.11.7 = STRING: "10.7.3.30:80  0"
.1.3.6.1.4.1.12196.12.2.1.11.8 = STRING: "10.7.3.24:80  0"
.1.3.6.1.4.1.12196.12.2.1.11.9 = STRING: "10.7.3.25:80  0"
.1.3.6.1.4.1.12196.12.2.1.11.10 = STRING: "10.7.3.14:443 Masq 0"
.1.3.6.1.4.1.12196.12.2.1.11.11 = STRING: "10.7.3.15:443 Masq 0"
.1.3.6.1.4.1.12196.12.2.1.11.12 = STRING: "10.7.3.16:443 Masq 0"
.1.3.6.1.4.1.12196.12.2.1.11.13 = STRING: "10.7.3.31:80  0"
.1.3.6.1.4.1.12196.12.2.1.11.14 = STRING: "10.7.3.17:443 Masq 0"
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I started creating the following xml file:

Code: Select all

<interface>
        <name>Get ipvsRSTableh Information</name>
        <description>Get SNMP based Real Server infomration from a Kemp Load Balancer</description>
        <index_order_type>numeric</index_order_type>
        <oid_index>.1.3.6.1.4.1.12196.12.2</oid_index>
        <fields>
                <rSDesc>
                        <name>Description</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>input</direction>
                        <oid>.1.3.6.1.4.1.12196.12.2.1.11</oid>
                </rSDesc>
                <rSVSidx>
                        <name>Virtual Server Index</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>input</direction>
                        <oid>.1.3.6.1.4.1.12196.12.2.1.1</oid>
                </rSVSidx>
                <rSConns>
                        <name>RS Total Connections</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>output</direction>
                        <oid>.1.3.6.1.4.1.12196.12.2.1.12</oid>
                </rSConns>
        </fields>
</interface>

I created a data query in Cacti then, and it successfully loaded the XML. Added the query to my device, ran the verbose query and got the following:

Code: Select all

+ Running data query [13].
+ Found type = '3' [snmp query].
+ Found data query XML file at '/var/www/html/resource/snmp_queries/ipvsRSTable.xml'
+ XML file parsed ok.
+ Executing SNMP walk for list of indexes @ '.1.3.6.1.4.1.12196.12.2'
+ Located input field 'rSDesc' [walk]
+ Executing SNMP walk for data @ '.1.3.6.1.4.1.12196.12.2.1.11'
+ Found item [rSDesc='10.7.3.24:80 0'] index: 1 [from value]
+ Found item [rSDesc='10.7.3.25:80 0'] index: 2 [from value]
+ Found item [rSDesc='10.7.3.26:80 0'] index: 3 [from value]
+ Found item [rSDesc='10.7.3.27:80 0'] index: 4 [from value]
+ Found item [rSDesc='10.7.3.28:80 0'] index: 5 [from value]
+ Found item [rSDesc='10.7.3.29:80 0'] index: 6 [from value]
+ Found item [rSDesc='10.7.3.30:80 0'] index: 7 [from value]
+ Found item [rSDesc='10.7.3.24:80 0'] index: 8 [from value]
+ Found item [rSDesc='10.7.3.25:80 0'] index: 9 [from value]
+ Found item [rSDesc='10.7.3.14:443 Masq 0'] index: 10 [from value]
+ Found item [rSDesc='10.7.3.15:443 Masq 0'] index: 11 [from value]
+ Found item [rSDesc='10.7.3.16:443 Masq 0'] index: 12 [from value]
+ Found item [rSDesc='10.7.3.31:80 0'] index: 13 [from value]
+ Found item [rSDesc='10.7.3.17:443 Masq 0'] index: 14 [from value]
+ Located input field 'rSVSidx' [walk]
+ Executing SNMP walk for data @ '.1.3.6.1.4.1.12196.12.2.1.1'
+ Found item [rSVSidx='0'] index: 1 [from value]
+ Found item [rSVSidx='0'] index: 2 [from value]
+ Found item [rSVSidx='0'] index: 3 [from value]
+ Found item [rSVSidx='0'] index: 4 [from value]
+ Found item [rSVSidx='0'] index: 5 [from value]
+ Found item [rSVSidx='0'] index: 6 [from value]
+ Found item [rSVSidx='0'] index: 7 [from value]
+ Found item [rSVSidx='1'] index: 8 [from value]
+ Found item [rSVSidx='1'] index: 9 [from value]
+ Found item [rSVSidx='2'] index: 10 [from value]
+ Found item [rSVSidx='2'] index: 11 [from value]
+ Found item [rSVSidx='2'] index: 12 [from value]
+ Found item [rSVSidx='3'] index: 13 [from value]
+ Found item [rSVSidx='4'] index: 14 [from value]
+ Found data query XML file at '/var/www/html/resource/snmp_queries/ipvsRSTable.xml'
+ Found data query XML file at '/var/www/html/resource/snmp_queries/ipvsRSTable.xml'
+ Found data query XML file at '/var/www/html/resource/snmp_queries/ipvsRSTable.xml'

I then created a data template with the following configuration options:

Data Template - Name: kemp - rsConns
Data Source - Name: (checked) kemp_rsConns
Data Input Method - Get SNMP Data (Indexed)
Associated RRA's - (All Selected)
Step - 300
Data Source Active - (Checked)

Data Source Item - Internal Data Source Name - rsConns
Minimum Value/Maximum Value - 0
Data Source Type - Counter
Heartbeat - 600

Custom Data - Index Type (checked)
Custom Data - Index Value (checked)
Custom Data - Output Type ID (checked)

I then made a simple graph, called it kemp - rsConns and added a line1 graph type, average consolidation function and linked it to the data source rsConns I defined above.

I proceded to add the graph template to the data query. I did not however put anything in suggested values.

And now I am at a point where I create the graph, but nothing is ever put into a RRD file. If I go to Data Sources and turn on debug mode I get the following:

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/usr/bin/rrdtool create \
/var/www/html/rra/kemp_lb1_rsconns_546.rrd \
--step 300  \
DS:rsConns:COUNTER:600:0:U \
RRA:AVERAGE:0.5:1:10080 \
RRA:AVERAGE:0.5:1:25920 \
RRA:AVERAGE:0.5:6:9000 \
RRA:AVERAGE:0.5:24:2250 \
RRA:AVERAGE:0.5:288:797 \
RRA:MIN:0.5:1:10080 \
RRA:MIN:0.5:1:25920 \
RRA:MIN:0.5:6:9000 \
RRA:MIN:0.5:24:2250 \
RRA:MIN:0.5:288:797 \
RRA:MAX:0.5:1:10080 \
RRA:MAX:0.5:1:25920 \
RRA:MAX:0.5:6:9000 \
RRA:MAX:0.5:24:2250 \
RRA:MAX:0.5:288:797 \
RRA:LAST:0.5:1:10080 \
RRA:LAST:0.5:1:25920 \
RRA:LAST:0.5:6:9000 \
RRA:LAST:0.5:24:2250 \
RRA:LAST:0.5:288:797 \

Any ideas what could be causing the problem? If I set the value in the XML to input it does get picked up by Cacti (granted you can't graph it but I knew that would happen). Any help would be appreciated.

Post by **gandalf** » Sat Jun 14, 2008 1:52 pm

I've already answered to the other thread. But let's continue this discussion here. Use <oid_index>.1.3.6.1.4.1.12196.12.2.1.1</oid_index>
Reinhard

vortico · Post by **vortico** » Mon Jun 16, 2008 11:07 am

Trying this out. However I did get the following when I tried to get that OID from the command line.

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snmpget -v 2c 10.7.2.188 .1.3.6.1.4.1.12196.12.2.1.1
SNMPv2-SMI::enterprises.12196.12.2.1.1 = No Such Instance currently exists at this OID

vortico · Post by **vortico** » Mon Jun 16, 2008 11:19 am

Doesn't appear to be functioning =/. Still says there is no RRD file (which there isn't). Interesting note though, I added suggested values to the graphs. I added the following

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name   	 |host_description| - RS - |query_rSDesc|
title   	 |host_description| - RS - |query_rSDesc|

It is only producing Kemp LB1 - RS - |query_rSDesc| for the name and title.

Post by **gandalf** » Wed Jun 18, 2008 12:04 pm

vortico wrote:Trying this out. However I did get the following when I tried to get that OID from the command line.
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snmpget -v 2c 10.7.2.188 .1.3.6.1.4.1.12196.12.2.1.1
SNMPv2-SMI::enterprises.12196.12.2.1.1 = No Such Instance currently exists at this OID

It is NOT suppose to get an SNMP answer to that OID. This OID is considered to be the "root" of the index. E.g.
.1.3.6.1.4.1.12196.12.2.1.1.1
.1.3.6.1.4.1.12196.12.2.1.1.2
.1.3.6.1.4.1.12196.12.2.1.1.3
.1.3.6.1.4.1.12196.12.2.1.1.4
...
Is the list of the OIDs. The "index" itself would be
1
2
3
4
then (separating the stem of .1.3.6.1.4.1.12196.12.2.1.1 from the complete OID).
Reinhard

Post by **gandalf** » Wed Jun 18, 2008 12:06 pm

vortico wrote:Doesn't appear to be functioning =/. Still says there is no RRD file (which there isn't). Interesting note though, I added suggested values to the graphs. I added the following
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name   	 |host_description| - RS - |query_rSDesc|
title   	 |host_description| - RS - |query_rSDesc|
It is only producing Kemp LB1 - RS - |query_rSDesc| for the name and title.

Please post current XML file. Then, please read SNMP Data Query section of 1st link of my sig (this doc is current opposed to the thread mentioned above).
First, we will have to make "Verbose Query" up and running before looking at any graphs
Reinhard

Issues getting cacti to graph from a snmp table

Issues getting cacti to graph from a snmp table

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