When Nodepool attempts to create a Node in Jenkins over API, Jenkins emits a stacktrace.
Upstream https://issues.jenkins-ci.org/browse/JENKINS-22762
> https://integration.wikimedia.org/ci/computer/doCreateItem?json=%7B%22launcher%22%3A+%7B%22username%22%3A+%22nodepoolmanager%22%2C+%22stapler-class%22%3A+%22hudson.plugins.sshslaves.SSHLauncher%22%2C+%22host%22%3A+%2210.68.17.84%22%2C+%22privatekey%22%3A+%22%2Fvar%2Flib%2Fnodepool%2F.ssh%2Fnodepoolmanager_id_rsa%22%2C+%22port%22%3A+22%7D%2C+%22numExecutors%22%3A+1%2C+%22nodeProperties%22%3A+%7B%22stapler-class-bag%22%3A+%22true%22%7D%2C+%22name%22%3A+%22ci-jessie-wikimedia-33%22%2C+%22retentionStrategy%22%3A+%7B%22stapler-class%22%3A+%22hudson.slaves.RetentionStrategy%24Always%22%7D%2C+%22remoteFS%22%3A+%22%2Fhome%2Fjenkins%22%2C+%22type%22%3A+%22hudson.slaves.DumbSlave%24DescriptorImpl%22%2C+%22nodeDescription%22%3A+%22Dynamic+single+use+ci-jessie-wikimedia+node%22%2C+%22labelString%22%3A+%22ci-jessie-wikimedia%22%2C+%22mode%22%3A+%22EXCLUSIVE%22%7D&type=hudson.slaves.DumbSlave%24DescriptorImpl&name=ci-jessie-wikimedia-33
Which is == to:
```
https://integration.wikimedia.org/ci/computer/doCreateItem?
json=
{
"labelString": "ci-jessie-wikimedia",
"launcher": {
"host": "10.68.17.84",
"port": 22,
"privatekey": "/var/lib/nodepool/.ssh/nodepoolmanager_id_rsa",
"stapler-class": "hudson.plugins.sshslaves.SSHLauncher",
"username": "nodepoolmanager"
},
"mode": "EXCLUSIVE",
"name": "ci-jessie-wikimedia-33",
"nodeDescription": "Dynamic single use ci-jessie-wikimedia node",
"nodeProperties": {
"stapler-class-bag": "true"
},
"numExecutors": 1,
"remoteFS": "/home/jenkins",
"retentionStrategy": {
"stapler-class": "hudson.slaves.RetentionStrategy$Always"
},
"type": "hudson.slaves.DumbSlave$DescriptorImpl"
}
&type=hudson.slaves.DumbSlave$
DescriptorImpl&name=ci-jessie-wikimedia-33
```
Jenkins throws a stacktrace:
```
javax.servlet.ServletException: java.lang.RuntimeException: Failed to instantiate class hudson.slaves.DumbSlave from {"launcher":{"username":"nodepoolmanager","stapler-class":"hudson.plugins.sshslaves.SSHLauncher","host":"10.68.17.84","privatekey":"/var/lib/nodepool/.ssh/nodepoolmanager_id_rsa","port":22},"numExecutors":1,"nodeProperties":{"stapler-class-bag":"true"},"name":"ci-jessie-wikimedia-33","retentionStrategy":{"stapler-class":"hudson.slaves.RetentionStrategy$Always"},"remoteFS":"/home/jenkins","type":"hudson.slaves.DumbSlave$DescriptorImpl","nodeDescription":"Dynamic single use ci-jessie-wikimedia node","labelString":"ci-jessie-wikimedia","mode":"EXCLUSIVE"}
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:796)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:211)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)
at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:686)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1494)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:96)
at hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:58)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:99)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:198)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:176)
at net.bull.javamelody.PluginMonitoringFilter.doFilter(PluginMonitoringFilter.java:85)
at org.jvnet.hudson.plugins.monitoring.HudsonMonitoringFilter.doFilter(HudsonMonitoringFilter.java:99)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:99)
at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:88)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:48)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
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$1.doFilter(ChainedServletFilter.java:87)
at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:168)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1474)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:533)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:68)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:366)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Failed to instantiate class hudson.slaves.DumbSlave from {"launcher":{"username":"nodepoolmanager","stapler-class":"hudson.plugins.sshslaves.SSHLauncher","host":"10.68.17.84","privatekey":"/var/lib/nodepool/.ssh/nodepoolmanager_id_rsa","port":22},"numExecutors":1,"nodeProperties":{"stapler-class-bag":"true"},"name":"ci-jessie-wikimedia-33","retentionStrategy":{"stapler-class":"hudson.slaves.RetentionStrategy$Always"},"remoteFS":"/home/jenkins","type":"hudson.slaves.DumbSlave$DescriptorImpl","nodeDescription":"Dynamic single use ci-jessie-wikimedia node","labelString":"ci-jessie-wikimedia","mode":"EXCLUSIVE"}
at hudson.model.Descriptor.newInstance(Descriptor.java:577)
at hudson.model.ComputerSet.doDoCreateItem(ComputerSet.java:293)
at sun.reflect.GeneratedMethodAccessor7945.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:298)
at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:161)
at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:96)
at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:121)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
... 72 more
Caused by: java.lang.NullPointerException
at com.cloudbees.plugins.credentials.matchers.IdMatcher.<init>(IdMatcher.java:49)
at com.cloudbees.plugins.credentials.CredentialsMatchers.withId(CredentialsMatchers.java:112)
at hudson.plugins.sshslaves.SSHLauncher.lookupSystemCredentials(SSHLauncher.java:291)
at hudson.plugins.sshslaves.SSHLauncher.<init>(SSHLauncher.java:268)
at sun.reflect.GeneratedConstructorAccessor2257.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.kohsuke.stapler.RequestImpl.invokeConstructor(RequestImpl.java:447)
at org.kohsuke.stapler.RequestImpl.instantiate(RequestImpl.java:699)
at org.kohsuke.stapler.RequestImpl.access$200(RequestImpl.java:81)
at org.kohsuke.stapler.RequestImpl$TypePair.convertJSON(RequestImpl.java:596)
at org.kohsuke.stapler.RequestImpl.bindJSON(RequestImpl.java:400)
at org.kohsuke.stapler.RequestImpl.instantiate(RequestImpl.java:693)
at org.kohsuke.stapler.RequestImpl.access$200(RequestImpl.java:81)
at org.kohsuke.stapler.RequestImpl$TypePair.convertJSON(RequestImpl.java:596)
at org.kohsuke.stapler.RequestImpl.bindJSON(RequestImpl.java:400)
at org.kohsuke.stapler.RequestImpl.bindJSON(RequestImpl.java:396)
at hudson.model.Descriptor.newInstance(Descriptor.java:568)
... 82 more