Nagios Support Forum

Hi,

We used the api with step=300 below to get data.
http://10.x.x.x/nagiosxi/api/v1/objects ... 5&step=300

Moderator's Note: Edited URL to remove sensitive data from the public forum.

However, we get the date with step=900
"meta": {
"start": "1609663500",
"step": "900",
"end": "1609663500",
"rows": "385",
"columns": "4",
"legend": {
"entry": [
"rta",
"pl",
"rtmax",
"rtmin"
]

I'm not certain what you're expecting as an output, and what's not coming through. Can you be more specific?

What do you expect when you specify step=300?
What do you expect when you specify step=900?
What comes out when you specify step=300?
What comes out when you specify step=900?

I put step=300 in API, so I am expecting the data should show at the right period(300).

http://10.X.X.X/nagiosxi/api/v1/objects ... b]step=300[/b]

{
"meta": {
"start": "1609810200",
"step": "900",
"end": "1609810200",
"rows": "289",
"columns": "4",
"legend": {
"entry": [
"rta",
"pl",
"rtmax",
"rtmin"
]
}
},
"data": {
"row": [
{
"t": "1609810200",
"v": [
"NaN",
"NaN",
"NaN",
"NaN"
]
},
{
"t": "1609811100",
"v": [
"3.6923777778e-02",
"0.0000000000e+00",
"8.3856000000e-02",
"2.3104888889e-02"
]
},
{
"t": "1609812000",
"v": [
"3.7209333333e-02",
"0.0000000000e+00",
"8.9685555556e-02",
"2.2895111111e-02"
]
},
{
"t": "1609812900",
"v": [
"4.2913777778e-02",
"0.0000000000e+00",
"9.4990666667e-02",
"2.8408888889e-02"
]
},

If you PM me a system profile I can diagnose further. Get one by going to Admin (top menu) => System Profile (in the left menu), then clicking the blue button.

If you're unable to generate the the profile through the web interface, please try generating it from the command line by running these commands as root: Then send me the resulting /usr/local/nagiosxi/var/components/profile.zip file.
If the profile script fails, please include the ENTIRE output.

Please find the Profile System in your PM.

I'm not seeing the request to /rrdexport in your Apache access logs so I can't tell either way if it's being sent correctly.

How are you executing this API call? Is it a shell script that invokes a curl(1) call? A PHP script? Something else?

The data was achieved by putting http://10.X.X.X/nagiosxi/ in URL of web browser.

I'm able to replicate this, sometimes...

When I pass 300, it shows 300, when I pass 600 it's showing 1800. I will post an update shortly, investigating now.

This is automatically done by the backend rrdtool xport command, for example (this is what the command executes):
You can see the step automatically increased to 1800 regardless of what is entered/similar to what you see.

Based on the link below it's saying it's doing that because the maxrows is not high enough (default is 400):

https://lists.oetiker.ch/pipermail/rrd- ... 19368.html

It says you can pass in -m for max rows so I just increased to 9000 as a test and it worked:
This one explains a bit more:

https://stackoverflow.com/a/34824890

I'll need to submit this to development so that they can add the ability to pass maxrows or automatically calculate based on the step and the amount of time.

EDIT: Submitted:

NEW TASK ID 15433 created - Nagios XI Bug Report: XI - rrdexprt API endpoint doesn't always honor step because maxrows is default of 400

Thanks for you information.

Please let us know once your development team finishes the task.