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Issues with Poll Interval

There is a problem the Poll Interval <30m set from the beginning to a Service and then modified to ≥30m.

Recreated problem

We recreated the problem in lab-primary1, using the SSH service of port22 with 1m, adding it to the node testnode3.

https://lab-primary1.opmantek.net/cgi-nmis9/network.pl?act=network_service_view&node=testnode3&refresh=180&widget=false&cluster_id=84e2260c-bb7b-487d-8b5c-c4e9ebc20a65

It is observed that the graphs start to show information, both in NMIS and in opCharts (from 15:35/15:40 to 15:55).

Then, the Poll Interval of the service is modified to 30m.

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The rrd update is observed at 15:55.

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After 30m, no graphing is observed in the configured Poll Interval, but the rrd update at 16:22 is observed.

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We wait another 30m and the service continues without graphing, but we do see a new update in the rrd.

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The Poll Interval of the service is set back to 1m (at 16:55).

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The charts are recovering, but there is already a 1-hour gap.

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Conclusion

If a Poll Interval of a service that is 1m, 2m, 10m, 15m to 30m or more, is modified, the service graphs are stopped.

If the Poll Interval is returned to the initial value (less than 30m), the graphs recover but a gap is observed at the time when it was 30m or more.