I configured a remote Jenkins with global Jenkins credentials ( username/password ). Works fine.

Now I want to put that configuration in a jenkins.yaml in order to automatically get this configuration. The export from JCASC looks like this ( just Credentials and the remote Jenkins - leading blancs replaced by .):

credentials:
..system:
....domainCredentials:
....- credentials:
......- usernamePassword:
..........description: "Jenkinsuser"
..........id: "jenkinsuser"
..........password: xxx
..........scope: GLOBAL
..........username: "User"

unclassified:
..remoteBuildConfiguration:
....remoteSites:
....- address: "http://xxx.xxx.xxx.xxx:xxxx/"
......auth2:
........CredentialsAuth:
..........credentials: "jenkinsuser"
......displayName: "JenkinsUser"

If I read that back in I get a Nullpointer - see below. Jenkins does not find the credential and the username. I tried to name the credentials parameter differently ( credentialsId ). But I do not get it to work. Googling and looking into the source of the plugins did not help ( I'm not that deep into the Jenkins plugins ).

I might need a pointer to get me startet with this - it won't be the last point to stumble upon.

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java.lang.NullPointerException
at org.jenkinsci.plugins.ParameterizedRemoteTrigger.auth2.CredentialsAuth._findCredential(CredentialsAuth.java:113)
at org.jenkinsci.plugins.ParameterizedRemoteTrigger.auth2.CredentialsAuth._getCredentials(CredentialsAuth.java:108)
at org.jenkinsci.plugins.ParameterizedRemoteTrigger.auth2.CredentialsAuth.getUserName(CredentialsAuth.java:63)
at org.jenkinsci.plugins.ParameterizedRemoteTrigger.auth2.CredentialsAuth.toString(CredentialsAuth.java:88)
at org.jenkinsci.plugins.ParameterizedRemoteTrigger.auth2.CredentialsAuth.toString(CredentialsAuth.java:82)
at java.lang.String.valueOf(Unknown Source)
at java.lang.StringBuilder.append(Unknown Source)
at io.jenkins.plugins.casc.Attribute.setValue(Attribute.java:169)
at io.jenkins.plugins.casc.BaseConfigurator.configure(BaseConfigurator.java:355)
Caused: io.jenkins.plugins.casc.ConfiguratorException: string: Failed to set attribute credentials(class: class java.lang.String, multiple: false)
at io.jenkins.plugins.casc.BaseConfigurator.configure(BaseConfigurator.java:357)
at io.jenkins.plugins.casc.BaseConfigurator.configure(BaseConfigurator.java:273)
at io.jenkins.plugins.casc.impl.configurators.DataBoundConfigurator.configure(DataBoundConfigurator.java:79)
at io.jenkins.plugins.casc.impl.configurators.HeteroDescribableConfigurator.configure(HeteroDescribableConfigurator.java:96)
at io.jenkins.plugins.casc.impl.configurators.HeteroDescribableConfigurator.configure(HeteroDescribableConfigurator.java:43)
at io.jenkins.plugins.casc.BaseConfigurator.configure(BaseConfigurator.java:350)
at io.jenkins.plugins.casc.BaseConfigurator.configure(BaseConfigurator.java:273)
at io.jenkins.plugins.casc.impl.configurators.DataBoundConfigurator.check(DataBoundConfigurator.java:97)
at io.jenkins.plugins.casc.BaseConfigurator.configure(BaseConfigurator.java:341)
at io.jenkins.plugins.casc.BaseConfigurator.check(BaseConfigurator.java:284)
at io.jenkins.plugins.casc.BaseConfigurator.configure(BaseConfigurator.java:349)
at io.jenkins.plugins.casc.BaseConfigurator.check(BaseConfigurator.java:284)
at io.jenkins.plugins.casc.ConfigurationAsCode.lambda$checkWith$8(ConfigurationAsCode.java:657)
at io.jenkins.plugins.casc.ConfigurationAsCode.invokeWith(ConfigurationAsCode.java:620)
Caused: io.jenkins.plugins.casc.ConfiguratorException: unclassified: error configuring 'unclassified' with class io.jenkins.plugins.casc.impl.configurators.GlobalConfigurationCategoryConfigurator configurator
at io.jenkins.plugins.casc.ConfigurationAsCode.invokeWith(ConfigurationAsCode.java:626)
at io.jenkins.plugins.casc.ConfigurationAsCode.checkWith(ConfigurationAsCode.java:657)
at io.jenkins.plugins.casc.ConfigurationAsCode.configureWith(ConfigurationAsCode.java:642)
at io.jenkins.plugins.casc.ConfigurationAsCode.configureWith(ConfigurationAsCode.java:545)
at io.jenkins.plugins.casc.ConfigurationAsCode.configure(ConfigurationAsCode.java:275)
at io.jenkins.plugins.casc.ConfigurationAsCode.doReload(ConfigurationAsCode.java:154)
at java.lang.invoke.MethodHandle.invokeWithArguments(Unknown Source)
at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:396)
at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:408)
at org.kohsuke.stapler.interceptor.RequirePOST$Processor.invoke(RequirePOST.java:77)
at org.kohsuke.stapler.PreInvokeInterceptedFunction.invoke(PreInvokeInterceptedFunction.java:26)
at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:212)
at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:145)
at org.kohsuke.stapler.MetaClass$11.doDispatch(MetaClass.java:537)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:739)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:870)
at org.kohsuke.stapler.MetaClass$9.dispatch(MetaClass.java:458)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:739)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:870)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:668)
at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:865)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1655)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
at jenkins.telemetry.impl.UserLanguages$AcceptLanguageFilter.doFilter(UserLanguages.java:128)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:157)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:99)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at jenkins.security.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:117)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:93)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:67)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:90)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1340)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1242)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.Server.handle(Server.java:503)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
at java.lang.Thread.run(Unknown Source)
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