<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle18
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:#1F4E79;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:532501013;
mso-list-type:hybrid;
mso-list-template-ids:-775150330 67698703 67698713 67698715 67698703 67698713 67698715 67698703 67698713 67698715;}
@list l0:level1
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level2
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level3
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level4
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level5
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level6
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level7
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level8
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level9
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal"><span style="color:#1F4E79">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F4E79"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">We’re from Amdocs and trying to install NGINX reverse proxy server on openshift cluster (6 nodes), and as part of its configuration, we must specify the DNS IP to directive – ‘resolver’ (because proxy_pass
has some parameters).<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:9.0pt;color:#1F497D">Nginx.conf:<o:p></o:p></span></i></p>
<p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:9.0pt;color:#1F497D"> Location ~ {<o:p></o:p></span></i></p>
<p class="MsoNormal" style="margin-left:1.0in;text-indent:.5in"><i><span style="font-size:9.0pt;color:#1F497D;background:yellow;mso-highlight:yellow">resolver DNS_IP</span></i><i><span style="font-size:9.0pt;color:#1F497D"> valid=5s;<o:p></o:p></span></i></p>
<p class="MsoNormal" style="margin-left:1.0in;text-indent:.5in"><i><span style="font-size:9.0pt;color:#1F497D">proxy_pass …..<br>
}</span></i><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">But – since it’s OCP cluster (multiple machines), we don’t know which IP to give – as it depends on which node the nginx pod was started (in /etc/resolv.conf – it has the relevant node IP). Also – we cannot
put all IPs in parameters.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">We ask for advice to:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:#1F497D"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span dir="LTR"></span><span style="color:#1F497D">How we can force nginx to user /etc/resolv.conf even if proxy_pass has parameters. This will solve our issues.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:#1F497D"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span dir="LTR"></span><span style="color:#1F497D">If #1 is not possible, which display name we can put for resolver within open-shift cluster ? for example – in K8S, we solved the issue by using kube-dns:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:1.0in;text-indent:.5in"><i><span style="font-size:9.0pt;color:#1F497D;background:yellow;mso-highlight:yellow">resolver kube-dns.kube-system.svc.cluster.local</span></i><i><span style="font-size:9.0pt;color:#1F497D"> valid=5s;<o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> Which string is relevant for DNS inside open-shift cluster ?
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Please assist.</span><span style="color:#1F4E79"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F4E79"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F4E79"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F4E79">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F4E79">Marwan<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<DIV>This message and the information contained herein is proprietary and confidential and subject to the Amdocs policy statement,
<DIV>you may review at <A href="https://www.amdocs.com/about/email-disclaimer">https://www.amdocs.com/about/email-disclaimer</A></DIV></DIV></body>
</html>