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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Hi Yujun,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">See my comments inline.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Ifat.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-family:Calibri;color:black">From:
</span></b><span style="font-family:Calibri;color:black">Yujun Zhang <zhangyujun+zte@gmail.com><br>
<b>Date: </b>Wednesday, 11 January 2017 at 12:12<br>
<br>
<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">I have just realized abstract alarm is not a good term. What I was talking about is
<b>fault</b> and <b>alarm</b>. <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Fault is what actually happens, and alarm is how it is detected (or deduced).
<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt">On Wed, Jan 11, 2017 at 5:13 PM Yujun Zhang <<a href="mailto:zhangyujun%2Bzte@gmail.com">zhangyujun+zte@gmail.com</a>> wrote:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt">I think YinLiYin's idea is a reasonable requirement from end user. They care more about the
<b>real faults</b> in the system, not how they are detected. Though it will bring much challenge to design and engineering, it creates value for customers. I'm quite positive on this evolution.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
<p class="MsoNormal">[Ifat] Of course. I never argued about the need, just tried to figure out how we should implement it.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt">One possible solution would be introducing a high level (abstract) template from users view. Then convert it to Vitrage scenario templates (or directly to graph). The
<b>more sources</b> (nagios, vitrage deduction) for an abstract alarm we get from the system, the
<b>more confidence</b> we get for a real fault. And the confidence of an alarm could be included in the scenario condition.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">[Ifat] I understand your idea, not sure yet if it helps with the use case.
<o:p></o:p></p>
<p class="MsoNormal">How would you imagine the ‘confidence’ property? As Boolean or a counter? One option is ‘deduced’ vs. ‘monitored’. Another option is to count the number of monitors that reported it. Personally, I don’t think this is needed. I think that
if Nagios reports an error, then it is confident enough without getting it from another monitor.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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