Issue
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When a new CasC bundle version is available, A controller does not receive CasC bundle update notifications
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When a new CasC bundle version is available, checking for CasC bundle updates at fails and report the following in the Jenkins logs:
WARNING: Caught unhandled exception with ID c9fc23f5-7563-4c8b-adff-e8744e917d71
javax.servlet.ServletException: java.lang.IllegalStateException: Expected 1 instance of com.cloudbees.opscenter.client.casc.ConfigurationBundleService but got 0
[...]
Caused by: java.lang.IllegalStateException: Expected 1 instance of com.cloudbees.opscenter.client.casc.ConfigurationBundleService but got 0
at hudson.ExtensionList.lookupSingleton(ExtensionList.java:451)
at com.cloudbees.opscenter.client.casc.ConfigurationUpdaterHelper.checkForUpdates(ConfigurationUpdaterHelper.java:32)
at com.cloudbees.opscenter.client.casc.visualization.BundleVisualizationLink.doBundleUpdate(BundleVisualizationLink.java:91)
Environment
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CloudBees CI (CloudBees Core) on modern cloud platforms - Managed controller >= 2.249.3.1
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CloudBees CI (CloudBees Core) on traditional platforms - Client controller >= 2.249.3.1
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CloudBees Jenkins Platform - Client controller >= 2.249.3.1
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Configuration as Code (CasC) for Controllers on modern platforms
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Configuration as Code (CasC) for Controllers on traditional platforms
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Configuration as Code (CasC) for Controllers on CloudBees Jenkins Platform
Related Issue(s)
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CTR-3021: CasC for controller: error when a new version is available and click on Check when casc-api not installed
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CTR-2618: cloudbees-casc-api plugin included in CAP
Explanation
Since version 2.249.3.1, CasC for Controllers requires the CloudBees CasC API Plugin to be installed, even if not configuring either RBAC or Folders with CasC.
This is a bug tracked by CTR-3021: CasC for Controllers: error when a new version is available and click on Check when casc-api not installed.
Resolution
Until CTR-3021 is resolved, the solution is to install the CloudBees CasC API plugin.