<div dir="ltr"><br><br><div class="gmail_quote"><div dir="ltr">On Wed, Sep 5, 2018 at 4:59 AM zhangwenqing <<a href="mailto:18800173600@163.com" target="_blank">18800173600@163.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><pre><div>Thanks for your reply!</div><div>So how do you analyse the RCA?Do you ever use any statistics methods like time series or mathine learning methods?Or just use the method that Vitrage provides?</div><div><br></div><div><br></div><div>zhangwenqing</div></pre></div></blockquote><div><br></div><div><p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman""><span style="font-size:11pt;font-family:Calibri">Hi,</span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman""><span style="font-size:11pt;font-family:Calibri"> </span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman""><span style="font-size:11pt;font-family:Calibri">Sorry for the late
reply, I somehow missed your mail.</span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman""><span style="font-size:11pt;font-family:Calibri"> </span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman""><span style="font-size:11pt;font-family:Calibri">Vitrage is not a
monitoring tool. It does not perform statistic calculations, health checks,
etc. Instead, it gets topology and alarms from several datasources (OpenStack or external), combines
them in a topology graph, and performs RCA analysis on top of the graph. </span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman""><span style="font-size:11pt;font-family:Calibri">The RCA rules are
defined in Vitrage templates [1]. In these templates, you can define topology
conditions and actions to be executed as a result, like raise an additional
alarm, modify a resource state, or mark root-cause relationship between two
alarms.</span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman""><span style="font-size:11pt;font-family:Calibri"> </span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman""><span style="font-size:11pt;font-family:Calibri">[1] <a href="https://docs.openstack.org/vitrage/latest/contributor/vitrage-template-format.html" style="color:rgb(5,99,193)">https://docs.openstack.org/vitrage/latest/contributor/vitrage-template-format.html</a>
</span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman""><span style="font-size:11pt;font-family:Calibri"> </span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman""><span style="font-size:11pt;font-family:Calibri">Hope it helps,</span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:12pt;font-family:"Times New Roman""><span style="font-size:11pt;font-family:Calibri">Ifat</span></p></div><div> </div></div></div>