Technical inquiry: Multi-server site routing under shared domain in OpenCms

Ramon Gavira Sáenz via opencms-dev <[email protected]> Thu, 11 Sep 2025 16:38:37 +0000
Newsgroups	gmane.comp.cms.opencms.devel
Message-ID	<DB9PR05MB8396101A8736F20C33520311E209A@DB9PR05MB8396.eurprd05.prod.outlook.com>
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dgb2312">
<style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo=
ttom:0;} </style>
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<div style=3D"text-align: left; text-indent: 0px; line-height: 20px; margin=
: 1em 0px; display: block; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MS=
FontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0,=
 0, 0);" class=3D"elementToProof">
Hello,</div>
<div style=3D"line-height: 20px; margin-top: 1em; margin-bottom: 1em; font-=
family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica,=
 sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"elementToProof=
">
I'm currently working on setting up an OpenCms architecture where multiple =
sites, hosted on separate OpenCms servers, are accessible under a shared co=
rporate domain using path-based routing. The intended structure is as follo=
ws:</div>
<ul>
<li style=3D"font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, C=
alibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); line-h=
eight: 20px;">
<code>http://www.corporate-domain.com/opencms-server1/site1</code>&nbsp;=A1=
=FA served by <i>
site1</i>&nbsp;on <b>OpenCms Server 1</b></li><li style=3D"font-family: Apt=
os, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif=
; font-size: 12pt; color: rgb(0, 0, 0); line-height: 20px;">
<code>http://www.corporate-domain.com/opencms-server1/site2</code>&nbsp;=A1=
=FA served by <i>
site2</i>&nbsp;on <b>OpenCms Server 1</b></li><li style=3D"font-family: Apt=
os, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif=
; font-size: 12pt; color: rgb(0, 0, 0); line-height: 20px;">
<code>http://www.corporate-domain.com/opencms-server2/site1</code>&nbsp;=A1=
=FA served by <i>
site1</i>&nbsp;on <b>OpenCms Server 2</b></li><li style=3D"font-family: Apt=
os, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif=
; font-size: 12pt; color: rgb(0, 0, 0); line-height: 20px;">
<code>http://www.corporate-domain.com/opencms-server2/site2</code>&nbsp;=A1=
=FA served by <i>
site2</i>&nbsp;on <b>OpenCms Server 2</b></li></ul>
<div style=3D"line-height: 20px; margin-top: 1em; margin-bottom: 1em; font-=
family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica,=
 sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"elementToProof=
">
To achieve this, I'm using <b>Apache HTTP Server</b>&nbsp;as a reverse prox=
y to route requests based on URL path to the appropriate backend OpenCms in=
stance. However, I'm facing several issues that prevent the setup from work=
ing reliably:</div>
<ul>
<li style=3D"font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, C=
alibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); line-h=
eight: 20px;">
<b>Static export problems</b>: Some resources are not being served correctl=
y depending on the site and server.</li><li style=3D"font-family: Aptos, Ap=
tos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font=
-size: 12pt; color: rgb(0, 0, 0); line-height: 20px;">
<b>AJAX calls</b>: Requests sometimes fail or are misrouted, especially whe=
n dealing with dynamic content or session-dependent data.</li><li style=3D"=
font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helve=
tica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); line-height: 20px;"=
>
<b>Other inconsistencies</b>: Occasionally, internal links, resource paths,=
 or redirects behave unexpectedly, breaking the user experience.</li></ul>
<div style=3D"line-height: 20px; margin-top: 1em; margin-bottom: 1em; font-=
family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica,=
 sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"elementToProof=
">
I'm wondering:</div>
<ul>
<li style=3D"font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, C=
alibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); line-h=
eight: 20px;">
Has anyone successfully implemented a similar architecture with OpenCms?</l=
i><li style=3D"font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService,=
 Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); line=
-height: 20px;">
Are there best practices or recommended configurations for Apache (or alter=
natives like NGINX) to handle this kind of routing?</li><li style=3D"font-f=
amily: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, =
sans-serif; font-size: 12pt; color: rgb(0, 0, 0); line-height: 20px;">
Are there known limitations in OpenCms when operating behind a reverse prox=
y with multiple instances?</li><li style=3D"font-family: Aptos, Aptos_Embed=
dedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12=
pt; color: rgb(0, 0, 0); line-height: 20px;">
How do you handle session management, caching, and resource linking across =
sites in this scenario?</li></ul>
<div style=3D"line-height: 20px; margin-top: 1em; margin-bottom: 1em; font-=
family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica,=
 sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"elementToProof=
">
Any technical insights, configuration examples, or documentation references=
 would be greatly appreciated.</div>
<div style=3D"line-height: 20px; margin-top: 1em; margin-bottom: 1em; font-=
family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica,=
 sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"elementToProof=
">
Thanks in advance!</div>
<div style=3D"line-height: 20px; margin-top: 1em; margin-bottom: 1em; font-=
family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica,=
 sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"elementToProof=
">
Ramon G.</div>
<div style=3D"text-align: left; text-indent: 0px; margin: 8px 0px 4px; disp=
lay: block; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Ca=
libri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=
=3D"elementToProof">
<br>
</div>
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