Minor When starting up a Jenkins agent on IBM z/OS, an exception is thrown. This is due to z/OS not supporting a typical interface for swap space calculations. It would be better if the swap space detection code was skipped completely on z/OS, as it won't work in the curent z/OS environment.
Aug 24, 2023 9:52:48 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir INFO: Using /home/zoauser/jenkins/agent/remoting as a remoting work directory Aug 24, 2023 9:52:48 PM org.jenkinsci.remoting.engine.WorkDirManager setupLogging INFO: Both error and output logs will be printed to /home/zoauser/jenkins/agent/remoting <===[JENKINS REMOTING CAPACITY]===>channel started Remoting version: 3142.vcfca_0cd92128 Launcher: SSHLauncher Communication Protocol: Standard in/out This is a Unix agent ERROR: Unexpected error in launching an agent. This is probably a bug in Jenkins java.lang.NoSuchMethodException: java.lang.Class.getDeclaredFields0(boolean) at java.base@11.0.19/java.lang.Class.newNoSuchMethodException(Class.java:649) at java.base@11.0.19/java.lang.Class.throwExceptionOrReturnNull(Class.java:1447) at java.base@11.0.19/java.lang.Class.getMethodHelper(Class.java:1533) at java.base@11.0.19/java.lang.Class.getDeclaredMethod(Class.java:1121) at org.jenkinsci.plugins.envinject.service.EnvInjectMasterEnvVarsSetter.getModifiers(EnvInjectMasterEnvVarsSetter.java:28) at org.jenkinsci.plugins.envinject.service.EnvInjectMasterEnvVarsSetter.call(EnvInjectMasterEnvVarsSetter.java:55) Also: hudson.remoting.Channel$CallSiteStackTrace: Remote call to np4 at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1787) at hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:356) at hudson.remoting.Channel.call(Channel.java:1003) at hudson.FilePath.act(FilePath.java:1283) at org.jenkinsci.plugins.envinject.EnvInjectComputerListener.onOnline(EnvInjectComputerListener.java:144) at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:751) at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:441) at hudson.plugins.sshslaves.SSHLauncher.startAgent(SSHLauncher.java:641) at hudson.plugins.sshslaves.SSHLauncher.lambda$launch$0(SSHLauncher.java:458) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:829) Caused: java.lang.RuntimeException at org.jenkinsci.plugins.envinject.service.EnvInjectMasterEnvVarsSetter.call(EnvInjectMasterEnvVarsSetter.java:62) at org.jenkinsci.plugins.envinject.service.EnvInjectMasterEnvVarsSetter.call(EnvInjectMasterEnvVarsSetter.java:19) at app//hudson.remoting.UserRequest.perform(UserRequest.java:211) at app//hudson.remoting.UserRequest.perform(UserRequest.java:54) at app//hudson.remoting.Request$2.run(Request.java:377) at app//hudson.remoting.InterceptingExecutorService.lambda$wrap$0(InterceptingExecutorService.java:78) at java.base@11.0.19/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base@11.0.19/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base@11.0.19/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base@11.0.19/java.lang.Thread.run(Thread.java:839) Agent successfully connected and online ERROR: Failed to monitor for Free Swap Space Also: hudson.remoting.Channel$CallSiteStackTrace: Remote call to np4 at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1787) at hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:356) at hudson.remoting.Channel$2.adapt(Channel.java:1037) at hudson.remoting.Channel$2.adapt(Channel.java:1033) at hudson.remoting.FutureAdapter.get(FutureAdapter.java:66) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitorDetailed(AbstractAsyncNodeMonitorDescriptor.java:112) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitor(AbstractAsyncNodeMonitorDescriptor.java:76) at hudson.node_monitors.AbstractNodeMonitorDescriptor$Record.run(AbstractNodeMonitorDescriptor.java:305) java.io.IOException: No suitable implementation found: os.name=z/OS os.arch=s390x sun.arch.data.model=64 at org.jvnet.hudson.MemoryMonitor.obtain(MemoryMonitor.java:93) at org.jvnet.hudson.MemoryMonitor.get(MemoryMonitor.java:59) at hudson.node_monitors.SwapSpaceMonitor$MonitorTask.call(SwapSpaceMonitor.java:125) at hudson.node_monitors.SwapSpaceMonitor$MonitorTask.call(SwapSpaceMonitor.java:120) at app//hudson.remoting.UserRequest.perform(UserRequest.java:211) at app//hudson.remoting.UserRequest.perform(UserRequest.java:54) at app//hudson.remoting.Request$2.run(Request.java:377) at app//hudson.remoting.InterceptingExecutorService.lambda$wrap$0(InterceptingExecutorService.java:78) at java.base@11.0.19/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base@11.0.19/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base@11.0.19/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base@11.0.19/java.lang.Thread.run(Thread.java:839) Caused: java.util.concurrent.ExecutionException at hudson.remoting.Channel$2.adapt(Channel.java:1039) at hudson.remoting.Channel$2.adapt(Channel.java:1033) at hudson.remoting.FutureAdapter.get(FutureAdapter.java:66) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitorDetailed(AbstractAsyncNodeMonitorDescriptor.java:112) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitor(AbstractAsyncNodeMonitorDescriptor.java:76) at hudson.node_monitors.AbstractNodeMonitorDescriptor$Record.run(AbstractNodeMonitorDescriptor.java:305) REST API