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<div>Answers inlined. Thanks for the questions! They forced me to think about certain features.</div>
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<div>Cheers,</div>
<div style="font-family: Calibri, sans-serif; "><font class="Apple-style-span" color="#000000"><font class="Apple-style-span" face="Calibri">--Jorge</font></font></div>
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<span style="font-weight:bold">From: </span>Samuel Bercovici <<a href="mailto:SamuelB@Radware.com">SamuelB@Radware.com</a>><br>
<span style="font-weight:bold">Reply-To: </span>"OpenStack Development Mailing List (not for usage questions)" <<a href="mailto:openstack-dev@lists.openstack.org">openstack-dev@lists.openstack.org</a>><br>
<span style="font-weight:bold">Date: </span>Wednesday, April 9, 2014 6:10 AM<br>
<span style="font-weight:bold">To: </span>"OpenStack Development Mailing List (<a href="mailto:openstack-dev@lists.openstack.org">openstack-dev@lists.openstack.org</a>)" <<a href="mailto:openstack-dev@lists.openstack.org">openstack-dev@lists.openstack.org</a>><br>
<span style="font-weight:bold">Subject: </span>[openstack-dev] [Neutron][LBaaS]Clarification in regards to
<a href="https://docs.google.com/a/mirantis.com/spreadsheet/ccc?key=0Ar1FuMFYRhgadDVXZ25NM2NfbGtLTkR0TDFNUWJQUWc#gid=1">
https://docs.google.com/a/mirantis.com/spreadsheet/ccc?key=0Ar1FuMFYRhgadDVXZ25NM2NfbGtLTkR0TDFNUWJQUWc#gid=1</a><br>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have looked at <a href="https://docs.google.com/a/mirantis.com/spreadsheet/ccc?key=0Ar1FuMFYRhgadDVXZ25NM2NfbGtLTkR0TDFNUWJQUWc#gid=1">
https://docs.google.com/a/mirantis.com/spreadsheet/ccc?key=0Ar1FuMFYRhgadDVXZ25NM2NfbGtLTkR0TDFNUWJQUWc#gid=1</a> and have a few questions:<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Monitoring Tab:<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Are there users that use load balancing who do not monitor members? Can you share the use cases where this makes sense?</p>
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<div><span class="Apple-tab-span" style="color: rgb(0, 0, 0); white-space: pre; "></span><font class="Apple-style-span" color="#ff0000">This is a good question. In our case we supply static ip addresses so some users have only one backend node. With one node
it isn't necessary. Another case I can think of is lbs that are being used for non-critical environments (i.e. dev or testing environment). For the most part it would make sense to have monitoring.</font></div>
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<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Does it make sense to define the different type of monitors (ex: TCP, HTTP HTTPS)?</p>
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<div style="color: rgb(0, 0, 0); "><span class="Apple-tab-span" style="color: rgb(0, 0, 0); white-space: pre; "></span><font class="Apple-style-span" color="#ff0000">Yes it does. Http monitoring, for example, allows you to monitor specific URI's. I just put
total utilization for all three to get some data out.</font></div>
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<o:p></o:p></p>
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<!--[if !supportLists]--><span style="mso-list:Ignore">c.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Does any existing cloud service besides the current implementation of the LBaaS API supports using multiple monitors on the same pool? Is this a required feature?</p>
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<div><span class="Apple-tab-span" style="white-space:pre"></span><font class="Apple-style-span" color="#ff0000">I would think multiple monitors wouldn't make sense as they could potentially conflict. How would a decision be made in such a case?</font></div>
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<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Logging Tab:<o:p></o:p></p>
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<!--[if !supportLists]--><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>What is logging use for?</p>
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<div><span class="Apple-tab-span" style="white-space:pre"></span><font class="Apple-style-span" color="#ff0000">This is specifically connection logging. It allows the user to see all of the requests that went through the load balancer. It is mostly used for
big data and troubleshooting.</font></div>
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<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>How does the tenant consume the logs?</p>
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<div><span class="Apple-tab-span" style="white-space:pre"></span><font class="Apple-style-span" color="#ff0000">For our offering, we send their logs in a compressed format to swift. However, I am open to discussion on how to handle this in a more flexible manner.</font></div>
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<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>SSL Tab:<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Please explain if SSL means passing SSL traffic through the load balancer or using the load balancer to terminate certificates.</p>
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<div><span class="Apple-tab-span" style="white-space:pre"></span><font class="Apple-style-span" color="#ff0000">SSL termination. I updated the tab.</font></div>
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<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Does it make sense to separate those (SSL termination and non HTTPS terminated traffic) as different rows?</p>
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<div><span class="Apple-tab-span" style="white-space:pre"></span><font class="Apple-style-span" color="#ff0000">Blue Box added a few extra rows. I identified lbs that terminate only secure traffic and lbs that allow both secure and insecure traffic.</font></div>
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<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">c.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Can anyone explain the use cases for SSL_MIXED?</p>
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<div><span class="Apple-tab-span" style="white-space:pre"></span><font class="Apple-style-span" color="#ff0000">A lot of web sites have mixed content. The lb terminates the secure traffic. The insecure traffic passes through normally.</font></div>
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<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>HA Tab:<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Is this a tenant facing option or is it the way the operator chose to implement the service</p>
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<div><span class="Apple-tab-span" style="white-space:pre"></span><font class="Apple-style-span" color="#ff0000">For us, this is operator implementation. However, since most lbs are considered mission critical almost all production users require HA. I could
see this being a toggable feature from the tenant side if they wanted to use a lb for testing or something non mission critical.</font></div>
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<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span style="mso-list:Ignore">5.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Content Caching Tab:<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Is this a load balancer feature or a CDN like feature.</p>
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<div><span class="Apple-tab-span" style="white-space:pre"></span><font class="Apple-style-span" color="#ff0000">This is a lb feature. However, depending on the amount of content you'd like to cache using a CDN may be overkill. Here is a link that may shed some
light: <a href="http://www.rackspace.com/knowledge_center/article/content-caching-for-cloud-load-balancers">http://www.rackspace.com/knowledge_center/article/content-caching-for-cloud-load-balancers</a></font></div>
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<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span style="mso-list:Ignore">6.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>L7<o:p></o:p></p>
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<!--[if !supportLists]--><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>Does any cloud provider support L7 switching and L7 content modifications?</p>
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<div><span class="Apple-tab-span" style="white-space:pre"></span><font class="Apple-style-span" color="#ff0000">We currently do not.</font></div>
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<o:p></o:p></p>
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<!--[if !supportLists]--><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>If so can you please add a tab noting how much such features are used?</p>
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<div><span class="Apple-tab-span" style="white-space:pre"></span><font class="Apple-style-span" color="#ff0000">N/A – Delegating to someone who actually has data.</font></div>
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<!--[if !supportLists]--><span style="mso-list:Ignore">c.<span style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]--><span dir="LTR"></span>If not, can anyone attest to whether this feature was requested by customers?</p>
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<div><span class="Apple-tab-span" style="white-space:pre"></span><font class="Apple-style-span" color="#ff0000">Good question. I can see the use cases but operator data on this would be nice for those that have it. We have had a few requests but not enough
that would warrant development effort at this time. Hence, I would mark this priority low unless we can back it up with data.</font></div>
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<p class="MsoNormal">Thanks!<o:p></o:p></p>
<p class="MsoNormal"> -Sam.<o:p></o:p></p>
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