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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Hi YinLiYin,<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">I’m not sure I understood the use case. Are you using a monitor that raises alarms A, B, C, D, and E? or does the monitor raise only alarms A and C, and the other alarms are deduced alarms
created by Vitrage?<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">In Vitrage templates you can determine causal relationship between different alarms. No matter who generated the alarm (Vitrage, Nagios, Zabbix, Aodh…), you can model that A is a cause
for B etc. You can also model that (B or D) is a cause of E. <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">If you see in Vitrage UI that alarms A, B and E are triggered, you can open the Root Casue Analysis view for one of them and see the A->B->E chain. In this use case, C and D are not triggered
at all, and you will not see them in the UI. <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">In what use case will you ‘suspect’ A or C? can you describe it in more details?<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">Best Regards,<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>
<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">"yinliyin@zte.com.cn" <yinliyin@zte.com.cn><br>
<b>Reply-To: </b>"OpenStack Development Mailing List (not for usage questions)" <openstack-dev@lists.openstack.org><br>
<b>Date: </b>Friday, 6 January 2017 at 03:15<br>
<b>To: </b>"openstack-dev@lists.openstack.org" <openstack-dev@lists.openstack.org><br>
<b>Cc: </b>"gong.yahui5@zte.com.cn" <gong.yahui5@zte.com.cn>, "han.jing28@zte.com.cn" <han.jing28@zte.com.cn>, "wang.weiya@zte.com.cn" <wang.weiya@zte.com.cn>, "jia.peiyuan@zte.com.cn" <jia.peiyuan@zte.com.cn>, "zhang.yujunz@zte.com.cn" <zhang.yujunz@zte.com.cn><br>
<b>Subject: </b>[openstack-dev] [Vitrage] About introduce suspect state of a alarm<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 style="margin-left:36.0pt">Hi all, <o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> I have a question when learnning vitrage: <o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> A, B, C, D, E are alarms, consider the following alarm propagation model: <o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> A --<span style="font-family:Calibri">＞</span> B <o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> C --<span style="font-family:Calibri">＞</span> D <o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> B or D --<span style="font-family:Calibri">＞</span> E<o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> <o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> When alarm E is reported by the system, from the above model, we know that one or both of the following conditions may be true:<o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> 1. A is trigged<o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> 2. C is trigged <o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> That is alarm A and C are suspected to be triggered. The suspect state of the alarm is valuable for system administrator because <o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> one could check the system to find out whether the suspected alarms is really triggered according to the information.<o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> In current vitrage template, we could not describe this situation. An alarm has only two states: triggered or not triggered. <o:p></o:p></p>
<p style="margin-left:36.0pt;line-height:15.75pt"> Whether we could introduce suspect state for alarms ?<o:p></o:p></p>
<p style="margin-left:36.0pt"><o:p> </o:p></p>
<p style="margin-left:36.0pt"><o:p> </o:p></p>
<p style="margin-left:36.0pt"><span class="signedit"><span style="font-size:9.0pt;font-family:Calibri;color:#58595B">殷力殷</span></span><span style="font-size:9.0pt;font-family:"微软雅黑","serif";color:#58595B"> </span><span style="font-family:Arial;color:#58595B">YinLiYin</span><o:p></o:p></p>
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