SLA Business Report - availilibity accuracy

[jframeau]

More of a thought than a bug.

Let's say we have a bp like this: Worst -> BP A -> BP B

BP A sees these events (only hard criticals are take into account):

4 criticals

[2024-11-15 03:12:54] SERVICE ALERT: B;B;OK;HARD;3;OK
[2024-11-15 03:12:03] SERVICE ALERT: B;B;CRITICAL;HARD;3
[2024-11-15 03:10:39] SERVICE ALERT: B;B;OK;HARD;3
[2024-11-15 03:10:03] SERVICE ALERT: B;B;CRITICAL;HARD;3
[2024-11-15 03:08:07] SERVICE ALERT: B;B;OK;HARD;3
[2024-11-15 03:07:03] SERVICE ALERT: B;B;CRITICAL;HARD;3
[2024-11-15 02:10:03] SERVICE ALERT: B;B;OK;HARD;3
[2024-11-15 02:07:03] SERVICE ALERT: B;B;CRITICAL;HARD;3

So are outages for B:

Start End Duration Type Plugin Output
2024-11-15 03:12:03 2024-11-15 03:12:54 0d 0h 0m 51s SERVICE CRITICAL (HARD) ...
2024-11-15 03:10:03 2024-11-15 03:10:39 0d 0h 0m 36s SERVICE CRITICAL (HARD) ...
2024-11-15 03:07:03 2024-11-15 03:08:07 0d 0h 1m 4s SERVICE CRITICAL (HARD) ...
2024-11-15 02:07:03 2024-11-15 02:09:03 0d 0h 2m 0s SERVICE CRITICAL (HARD) ...

sum = 4 mn 31s

Now for A:

3 criticals

[2024-11-15 03:10:13] SERVICE ALERT: A;A;OK;HARD;3
[2024-11-15 03:10:03] SERVICE ALERT: A;A;CRITICAL;HARD;3
[2024-11-15 03:08:20] SERVICE ALERT: A;A;OK;HARD;3
[2024-11-15 03:08:03] SERVICE ALERT: A;A;CRITICAL;HARD;3
[2024-11-15 03:06:17] SERVICE ALERT: A;A;OK;HARD;3
[2024-11-15 02:11:03] SERVICE ALERT: A;A;OK;HARD;3
[2024-11-15 02:08:03] SERVICE ALERT: A;A;CRITICAL;HARD;3

Si are outages for A

Start End Duration Type Plugin Output
2024-11-15 03:10:03 2024-11-15 03:10:13 0d 0h 0m 10s SERVICE CRITICAL (HARD) ...
2024-11-15 03:08:03 2024-11-15 03:08:20 0d 0h 0m 17s SERVICE CRITICAL (HARD) ...
2024-11-15 02:08:03 2024-11-15 02:10:03 0d 0h 2m 0s SERVICE CRITICAL (HARD) ...

sum = 2 mn 27s

Big difference !

I think it's inherent in the way we calculate so there's a loss of precision from bottom to top of the bp.

If I understand correctly, bp statuses are computed from command thruk bp all in crontab and cron is just 1 mn accurate.

I wonder if it's possible to shorten the time between two calculations?

jfr

[sni]

The default is 1 minute, but you can run the BP calculations as often as you like.