<div dir="ltr">The answers for our organization are generally pretty close to those that Jorge has said. So my response is mostly a big +1 to his, with the following differences:<div><br></div><div><br></div><div class="gmail_extra">
<br><div class="gmail_quote">On Wed, Apr 9, 2014 at 1:49 PM, Jorge Miramontes <span dir="ltr"><<a href="mailto:jorge.miramontes@rackspace.com" target="_blank">jorge.miramontes@rackspace.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div><span style="font-size:14px">1.<span style="font-size:7pt;font-family:'Times New Roman'">
</span></span><span dir="LTR" style="font-size:14px"></span><span style="font-size:14px">Monitoring Tab:</span><br></div></div></div><span style><div class=""><div><div lang="EN-US" link="blue" vlink="purple"><div><p><u></u></p>
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</span></span><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 style="white-space:pre-wrap"></span><font 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></div>
</blockquote><div><br></div><div>For the case of dev or testing environments: It could be argued that if you're going to bother to deploy load balancing at all, it's with the intent of having a functional representative of production. As such, such non-production environments should probably also make use of monitoring. ;)</div>
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<p><span>2.<span style="font:7.0pt "Times New Roman"">
</span></span><span dir="LTR"></span>Logging Tab:<u></u><u></u></p>
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<span>a.<span style="font:7.0pt "Times New Roman"">
</span></span><span dir="LTR"></span>What is logging use for?</p>
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</div><div><span style="white-space:pre-wrap"></span><font 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></div></blockquote><div><br></div><div>We tend to only use error logs for troubleshooting in cases where there might be a problem at the load-balancer level. Most of our customers get their big data and other troubleshooting logs from the back-end application servers.</div>
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<p><span>6.<span style="font:7.0pt "Times New Roman"">
</span></span><span dir="LTR"></span>L7<u></u><u></u></p>
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<span>a.<span style="font:7.0pt "Times New Roman"">
</span></span><span dir="LTR"></span>Does any cloud provider support L7 switching and L7 content modifications?</p>
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</div><div><span style="white-space:pre-wrap"></span><br></div></div></blockquote><div><br></div><div>We do. (Both L7 switching and L7 content modifications.) On the switching side of things, our most two common use cases are:</div>
<div>1. Switching based on URI base path (ex. anything under "/api" goes to a different pool)</div><div>2. Switching based on HTTP/1.1 hostname (ex. "<a href="http://www.example.com">www.example.com</a>" goes to a different pool than "<a href="http://api.example.com">api.example.com</a>")</div>
<div><br></div><div>We do have a few customers using cookie-based switching.</div><div><br></div><div>The content modification we allow is also pretty basic. Mostly, we insert the "X-Fowarded-For" header, and allow our customers to do HSTS at the load balancer. Most everything else can be done at the application server layer, so we have our customers do that.</div>
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</span></span><span dir="LTR"></span>If so can you please add a tab noting how much such features are used?</p></div></div></div></span></div></div></blockquote><div>Will do, once I get the data. Might not happen before tomorrow's meeting.</div>
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</span></span><span dir="LTR"></span>If not, can anyone attest to whether this feature was requested by customers?</p></div></div></div></span></div></div></blockquote><div>Yep, these features were requested by our customers and have become mission-critical for some. We could not transition these customers to another load balancer product without having this functionality now.</div>
<div><br></div><div>Thanks,</div><div>Stephen</div><div> </div></div><div><br></div>-- <br><span></span>Stephen Balukoff
<br>Blue Box Group, LLC
<br>(800)613-4305 x807
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