Issue
- Autorefresh causes performance issue.
- JENKINS-19828.
- Static images get loaded when page autorefresh enabled.
- You are receiving the following error:
2020-12-12 07:30:27.568+0000 [id=18] WARNING hudson.Functions#configureAutoRefresh: Failed to record auto refresh status in telemetry
java.lang.IllegalStateException: Expected 1 instance of jenkins.telemetry.impl.AutoRefresh but got 0
at hudson.ExtensionList.lookupSingleton(ExtensionList.java:451)
at hudson.Functions.configureAutoRefresh(Functions.java:655)
at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
Environment
- CloudBees CI (CloudBees Core)
- CloudBees CI (CloudBees Core) on modern cloud platforms - Managed Master
- CloudBees CI (CloudBees Core) on modern cloud platforms - Operations Center
- CloudBees CI (CloudBees Core) on traditional platforms - Client Master
- CloudBees CI (CloudBees Core) on traditional platforms - Operations Center
- CloudBees Jenkins Platform - Client Master
- CloudBees Jenkins Platform - Operations Center
- CloudBees Jenkins Distribution
- Jenkins LTS
Resolution
The auto refresh capability has been removed since Jenkins 2.235.1 to address performance issues. If you are running an earlier version of Jenkins and not able to upgrade, here are a few ways to workaround the caching issues:
-
Install Config AutoRefresh Plugin, and configure the auto refresh time to a large number.
-
If you are using a container like tomcat you can re-write the header to set the autorefresh cookie to false:
Header edit Set-Cookie "hudson\_auto\_refresh=true" "hudson\_auto\_refresh=false" RewriteCond %\{QUERY\_STRING\} ^(.+?&|)auto\_refresh=true(?:&(.\*)|)$ \[NC\] RewriteRule ^ JENKINS\_URL%\{REQUEST\_URI\}?%1%2 \[R=301,L\] -
Install the CloudBees Request Filter Plugin and add a new rule preventing someone from going to the autorefresh url:
.*/.*norefresh=true.*
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