Custom script for Ironport

[sridharp]

Hey All,

I'm new to cacti and scripting.. and working on new requirement for ironport monitoring .. Here is the requirements...

1. Get X1 using Snmpget (cpucachetime)
2. wait for n seconds
3. Get X2 using Snmpget (cpucachetime) -- the OID is same as step 1....
4. printout of value of (X2-X1) / n *100 - This value would be actual performance in percentage.

I'm not sure how to implement this in Cacti. Any suggestions would be very helpful.

Thank you
Sridhar

[noname]

Probably no script is needed in this case.

Try:
1) Create new CDEF (e.g. "Multiply by 100")

Code: Select all

cdef=CURRENT_DATA_SOURCE,100,*

2) Duplicate "SNMP - Generic OID Template" (or "Cisco Router - 5 Minute CPU") data template, then configure it
- Choose "GAUGE" as Data Source Type
- Set your OID

3) Create new graph template (or duplicate "Cisco - CPU Usage")
- Choose the above datasource (= step 2) for each graph items
- Select the above CDEF (= step 1) as CDEF Function

4) Add the above graph template to your device, then create graph

See also:
- Walkthrough: My First Data Template
- Walkthrough: My First Graph Template

[sridharp]

Hi,

thank you. However, in CDEF how do i get the value of the old data source. In my case, the goal is to find the difference between current data source and another datasource 5 mins before.

I checked special data source and I'm not sure how to get value of old datasource..

I tried this CDEF:

CURRENT_DATA_SOURCE,PREV,-,300,/,100,*

As my polling interval is 5 mins... i thought might work..any suggestions would be helpful.

-Sridhar

[noname]

thank you. However, in CDEF how do i get the value of the old data source. In my case, the goal is to find the difference between current data source and another datasource 5 mins before.

Oops, then try "COUNTER" (for cumulative value) or "DERIVE" (for up/down counter, see RRDtool manual) as data source type at the above step 2).
Calculating differences from previous data will be done by Cacti (RRDtool).

[sridharp]

Thanks a lot. That helped....

I set COUNTER in Data template used CDEF to get it in percentage....

-Sridhar