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**mucknet** · 06-04-2007, 03:19

Here is an example of a cacti XML file for an equallogic iscsi box, where you define the items you want to get out of the Table, and how to find the index. In this case, there is no set index like the partition example above, but you can "make your own" index by just looking at the last 1 (or 2 in this case) octets of the OID (the oid_index_parse parameter). This is a more common problem/feature than one might initially imagine.

Code:

<equallogic_volumes>
        <name>Get Equallogic Volume statistics</name>
        <description>Queries an equallogic group for Volume Statistics</description>
        <oid_index>.1.3.6.1.4.1.12740.5.1.7.1.1.4</oid_index>
        <oid_index_parse>OID/REGEXP:.*\.([0-9]*\.[0-9]*)$</oid_index_parse>
        <index_order>eqVolName</index_order>
        <index_order_type>numeric</index_order_type>
        <index_title_format>|chosen_order_field|</index_title_format>

        <fields>
                <eqVolName>
                        <name>Index</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>input</direction>
                        <oid>.1.3.6.1.4.1.12740.5.1.7.1.1.4</oid>
                </eqVolName>
                <eqVolPduCmd>
                        <name>Command Pdus</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>output</direction>
                        <oid>.1.3.6.1.4.1.12740.5.1.7.34.1.1</oid>
                </eqVolPduCmd>

                <eqVolPduRsp>
                        <name>Response Pdus</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>output</direction>
                        <oid>.1.3.6.1.4.1.12740.5.1.7.34.1.2</oid>
                </eqVolPduRsp>

                <eqVolTxDataBytes>
                        <name>Transmit Data Bytes</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>output</direction>
                        <oid>.1.3.6.1.4.1.12740.5.1.7.34.1.3</oid>
                </eqVolTxDataBytes>

                <eqVolRxDataBytes>
                        <name>Receive Data Bytes</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>output</direction>
                        <oid>.1.3.6.1.4.1.12740.5.1.7.34.1.4</oid>
                </eqVolRxDataBytes>

                <eqVolReadLatency>
                        <name>Read Latency</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>output</direction>
                        <oid>.1.3.6.1.4.1.12740.5.1.7.34.1.6</oid>
                </eqVolReadLatency>

                <eqVolWriteLatency>
                        <name>Write Latency</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>output</direction>
                        <oid>.1.3.6.1.4.1.12740.5.1.7.34.1.7</oid>
                </eqVolWriteLatency>
        </fields>
</equallogic_volumes>

A slightly more straight forward one for the interface MIB, where you simply specify which OID contains the index.

Code:

<interface>
        <name>Get SNMP Interfaces</name>
        <description>Queries a host for a list of monitorable interfaces</description>
        <oid_index>.1.3.6.1.2.1.2.2.1.1</oid_index>
        <oid_num_indexes>.1.3.6.1.2.1.2.1.0</oid_num_indexes>
        <index_order>ifDescr:ifName:ifHwAddr:ifIndex</index_order>
        <index_order_type>numeric</index_order_type>
        <index_title_format>|chosen_order_field|</index_title_format>

        <fields>
                <ifIndex>
                        <name>Index</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>input</direction>
                        <oid>.1.3.6.1.2.1.2.2.1.1</oid>
                </ifIndex>
                <ifOperStatus>
                        <name>Status</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>input</direction>
                        <oid>.1.3.6.1.2.1.2.2.1.8</oid>
                </ifOperStatus>
                <ifDescr>
                        <name>Description</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>input</direction>
                        <oid>.1.3.6.1.2.1.2.2.1.2</oid>
                </ifDescr>
                <ifName>
                        <name>Name (IF-MIB)</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>input</direction>
                        <oid>.1.3.6.1.2.1.31.1.1.1.1</oid>
                </ifName>
                <ifAlias>
                        <name>Alias (IF-MIB)</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>input</direction>
                        <oid>.1.3.6.1.2.1.31.1.1.1.18</oid>
                </ifAlias>
                ...
                <ifOutErrors>
                        <name>Errors Out</name>
                        <method>walk</method>
                        <source>value</source>
                        <direction>output</direction>
                        <oid>.1.3.6.1.2.1.2.2.1.20</oid>
                </ifOutErrors>
                <ifIP>
                        <name>IP Address</name>
                        <method>walk</method>
                        <source>OID/REGEXP:.*\.([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})$</source>
                        <direction>input</direction>
                        <oid>.1.3.6.1.2.1.4.20.1.2</oid>
                </ifIP>
        </fields>
</interface>

I cut out a number of the actual OID's grabbed from the SNMP Interface xml file, because its quite long, but it should show you the idea. ifAlias and ifDescr are VERY useful, and allow you to quickly look at your graph and know what your'e looking at (if you have the ports on your switch labeled correctly

)

Hopefully I've explained this adequately, and I can certainly give it another shot if necessary. Aside from this one feature idea that cacti has, I can't stand cacti, and I'm waiting the moment I'm done with this contract and no longer use it

**mucknet** · 17-04-2007, 01:50

Alexei,

Do you have any input on this? I'd love to hear your thoughts.

**joluinfante** · 06-07-2007, 06:21

Hi, Forum!
I see this problem (we can use the value in the snmp tables) very important, and, I did work in the code of the zabbix. I have a first version (I testing now it). This version can use values of key like ".1.3.6.1.2.1.25.2.3.1.5.1,2" (Values of Storage). I did modify the program to convert this "oid" in two oids:
.1.3.6.1.2.1.25.2.3.1.5.1
.1.3.6.1.2.1.25.2.3.1.5.2
... and return the sum of two values.
I suppouse is very import a syntax like ".1.3.6.1.2.1.25.2.3.1.5.*". On this case, the program need to walk for the table, and add each value, returning a unique value. But, I haven't this feature (I did work only 5 hours to change the program, and test it).
For me, is very neccesary, to do the checks in any machine without install an agent.
I'm attaching the source of zabbix modified (I did work in 1.4.2), and an test.c program, to test the method.
If the owner of zabbix like this change, I can continue uploading the modified code.
I'd like to receive your opinion, about the idea.

TIA
jorge infante

Attached Files

**joluinfante** · 06-07-2007, 21:16

Hi, forum!
I did continue on it.
I prepare a test.c program to complete the format of input mib's.
Samples:

# ./test {host} .1.3.6.1.2.1.25.2.3.1.6.*
0:HOST-RESOURCES-MIB::hrStorageUsed.1=9459293
1:HOST-RESOURCES-MIB::hrStorageUsed.2=8126
9467419 <--- Total size of Storage used

# ./test {host} .1.3.6.1.2.1.25.2.3.1.6.1,2
0:.1.3.6.1.2.1.25.2.3.1.6.1=9459293
1:.1.3.6.1.2.1.25.2.3.1.6.2=8126
9467419 <--- Total size of Storage used

# ./test {host} .1.3.6.1.2.1.25.2.3.1.6.1
0:.1.3.6.1.2.1.25.2.3.1.6.1=9459293
9459293 <--- Storage used in drive "c"

# ./test {host} .1.3.6.1.2.1.25.2.3.1.6.2
0:.1.3.6.1.2.1.25.2.3.1.6.2=8126
8126 <--- Storage used in drive "d"

I'm implementing this changes in the source of zabbix.

TIA
jorge infante

Attached Files

test.c (3.8 KB, 642 views)

**Alexei** · 11-07-2007, 09:06

Thanks for your work. It has to be evaluated and integrated into ZABBIX in the best possible way. Added to our TODO list.

**joluinfante** · 11-07-2007, 17:31

Thanks.
I'm sending my last source, with the last changes (to include oid.*). I'm thinking is a first idea. It need more work, to do eficient the process (like do a cache of oid's finded or similar).
jorge

Attached Files

checks_snmp.c (18.0 KB, 636 views)

**mcarbonneaux** · 05-09-2007, 21:23

i'm very interesting on that beceause on alteon/nortel loadbalancer, i've list of virtual IP interface that load balance to target host (real server)...
on this equipement add many virtual ip regulary...
and on heach new virtual ip i'm oblige to add new monitoring manualy on zabbix...

with cacti only one indexed table added and all new virtual ip are monitored when they are added...

the idea to comulate plutiple value of index a beautyfull but multiple value of an index snmp table while be more more beautyfull!

**amish1975** · 01-08-2013, 15:09

Is it a chance to have it implemented?

The great value of important SNMP data is available only as indexed tables.
There's need not just to summarize table data (as was shown above), but also to filter it out (based on certain criteria (RegExp?) and apply aggregate functions on the resultset (avg, count, etc).

The modifications, made my Joluinfante cannot be easily merged into Zabbix > 2.0 as the original source code was totally refactored.
Meanwhile the functionality is really HIGHLY DEMANDED, as now the only workaround is to call external scripts, do all the work (snmpwalk, parse the output) externally.

Please consider to extend the functionality of index search - something, like:

UCD-DISKIO-MIB::diskIOWrites["index","UCD-DISKIO-MIB::diskIODevice","dm-*","sum"]
- summarize the "diskIOWrites" values when the "diskIODevice" values match "dm-*" mask (SAN volumes, presented externally);

or:

HOST-RESOURCES-MIB::hrProcessorLoad["index","HOST-RESOURCES-MIB::hrProcessorFrwID","*","avg"]
- average load of all the server's processors

or:

HOST-RESOURCES-MIB::hrSWRunName["index","HOST-RESOURCES-MIB::hrSWRunName","*oracle*","cnt"]
- the number of spawned processes by oracle user

Hope this idea will be inflammatory!
Thanks!

**spidernik84** · 12-09-2013, 14:48

Yeah I second that. We're trying to get data from a Cisco ACE load balancer SNMP table (rserver status) and the only solution I can currently only think about is the external script + parsing + dinamically create items via API.

How did you solve this amish1975?
Thanks

**amish1975** · 12-09-2013, 15:16

Hi, spidernik84,

Glad there are two of us ) More chances to attract the developers attention...

Not solved yet. I was trying to inspect the source code of "checks_snmp.c" module v2.0.6 (most current for that moment) in order to try to merge changes, proposed by joluinfante for v.1.4.2

It was useless as this module was completely refactored (I think - mainly because of this https://www.zabbix.com/documentation...p/dynamicindex functionality).

So I duplicated it here:

We’ll be back soon!

https://www.zabbix.com/forum/showthread.php?t=41962

as an enhancement request. Hope it'll be implemented one day...
Still no response... (((

Regards,
amish1975

**spidernik84** · 12-09-2013, 15:24

I'll try to back you up as much as possible, this would be a nice to have feature!

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