topic Re: SLO - "best of" two entities in Automations

SLO - "best of" two entities

Nilander — Mon, 09 Jan 2023 09:18:17 GMT

Hi,

Anyone have a great way to calculate an SLO for two or more entities reporting successrate metric in percentage? In this case it's redundant VPN's so as long as one VPN have 100% successrate then the SLO should be 100%.

Imaginary metric:
vpn.successrate.percentage:splitBy("vpn"):filter("customer1"):bestof

//Henrik

Re: SLO - "best of" two entities

Julius_Loman — Mon, 09 Jan 2023 09:50:44 GMT

What about just not splitting it? So using :splitBy() in your case.

Re: SLO - "best of" two entities

Nilander — Mon, 09 Jan 2023 10:07:21 GMT

Thanks for your reply, that would give me a combined percentage right? 200% maximum in the case where it is two VPN's. So even if I divide the percentage with the number of VPN's the result would be less than 100% if one was below 100% even if the other was 100%.

Maybe I'm not making sense. 🙂
Let me try to explain further.
I want an SLO that starts burning if all both successrates are below 100%. It's redundant VPN's so both VPN's need to be down to burn the SLO, as long as one VPN is 100% the SLO metric should be 100%.
The red circles should not burn the SLO (as one tunnel is 100%) while the blue one should as the successrate on both tunnels are below 100%.

//Henrik

Re: SLO - "best of" two entities

Nilander — Mon, 09 Jan 2023 11:27:31 GMT

After thinking some more about your answer. If I had max it should be correct I think. 🙂
:splitBy():max