Unable to View Dashboard 'UrlPortMismatchException' Due to Apache Tomcat Connector
Platform Notice: Data Center - This article applies to Atlassian products on the Data Center platform.
Note that this knowledge base article was created for the Data Center version of the product. Data Center knowledge base articles for non-Data Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
Users trying to access the dashboard will encounter a System Error page containing an exception like the following:
com.atlassian.gadgets.dashboard.internal.diagnostics.UrlPortMismatchException: Detected URL port, 'XXXX', does not match expected port, '80'
at com.atlassian.gadgets.dashboard.internal.diagnostics.Diagnostics.checkExpectedPort(Diagnostics.java:81)
at com.atlassian.gadgets.dashboard.internal.diagnostics.Diagnostics.check(Diagnostics.java:32)
at com.atlassian.gadgets.dashboard.internal.diagnostics.DiagnosticsServlet.executeDiagnostics(DiagnosticsServlet.java:92)
at com.atlassian.gadgets.dashboard.internal.diagnostics.DiagnosticsServlet.doPost(DiagnosticsServlet.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
...
Cause
The most common cause of this is the use of a reverse-proxy HTTP server (often Apache or IIS) in front of the application server running JIRA. The front-end proxy is misdirecting traffic to the wrong port.
Resolution
Append proxyName="mycompany.com" and proxyPort="80" to your Tomcat connector (located in conf/server.xml). For example:
<Connector port="XXXX"
...........
proxyName="mycompany.com"
proxyPort="80"
/>
Note that the connector may appear across multiple lines or may be on a single line.