What is the grok pattern for this jenkins log?

Hi,

Can you please help me with the grok pattern for this jenkins sample data or log. The log is only a single line.

hudson.slaves.CommandLauncher launch\nSEVERE: Unable to launch the agent for dot-dewsttlas403-ci\njava.io.IOException: Failed to create a temporary file in /opt_shared_git/dot_slave/jenkins_slave/workspace\n\tat hudson.util.AtomicFileWriter.<init>(AtomicFileWriter.java:144)\n\tat hudson.util.AtomicFileWriter.<init>(AtomicFileWriter.java:109)\n\tat hudson.util.AtomicFileWriter.<init>(AtomicFileWriter.java:84)\n\tat hudson.util.AtomicFileWriter.<init>(AtomicFileWriter.java:74)\n\tat hudson.util.TextFile.write(TextFile.java:116)\n\tat jenkins.branch.WorkspaceLocatorImpl$WriteAtomic.invoke(WorkspaceLocatorImpl.java:264)\n\tat jenkins.branch.WorkspaceLocatorImpl$WriteAtomic.invoke(WorkspaceLocatorImpl.java:256)\n\tat hudson.FilePath$FileCallableWrapper.call(FilePath.java:3042)\n\tat hudson.remoting.UserRequest.perform(UserRequest.java:212)\n\tat hudson.remoting.UserRequest.perform(UserRequest.java:54)\n\tat hudson.remoting.Request$2.run(Request.java:369)\n\tat hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)\n\tat java.util.concurrent.FutureTask.run(FutureTask.java:266)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)\n\tat java.lang.Thread.run(Thread.java:745)\n\tSuppressed: hudson.remoting.Channel$CallSiteStackTrace: Remote call to dot-dewsttlas403-ci\n\t\tat hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1743)\n\t\tat hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:357)\n\t\tat hudson.remoting.Channel.call(Channel.java:957)\n\t\tat hudson.FilePath.act(FilePath.java:1069)\n\t\tat hudson.FilePath.act(FilePath.java:1058)\n\t\tat jenkins.branch.WorkspaceLocatorImpl.save(WorkspaceLocatorImpl.java:254)\n\t\tat jenkins.branch.WorkspaceLocatorImpl.access$500(WorkspaceLocatorImpl.java:80)\n\t\tat jenkins.branch.WorkspaceLocatorImpl$Collector.onOnline(WorkspaceLocatorImpl.java:561)\n\t\tat hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:697)\n\t\tat hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:432)\n\t\tat hudson.slaves.CommandLauncher.launch(CommandLauncher.java:154)\n\t\tat hudson.slaves.SlaveComputer$1.call(SlaveComputer.java:294)\n\t\tat jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)\n\t\tat jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:71)\n\t\tat java.util.concurrent.FutureTask.run(Unknown Source)\n\t\tat java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)\n\t\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)\n\t\tat java.lang.Thread.run(Unknown Source)\nCaused by: java.io.IOException: No space left on device\n\tat java.io.UnixFileSystem.createFileExclusively(Native Method)\n\tat java.io.File.createTempFile(File.java:2024)\n\tat hudson.util.AtomicFileWriter.<init>(AtomicFileWriter.java:142)\n\t... 15 more\n

I am only interested to extract the following from the above logs. agent status , agent name

Expected Result: agent status: Unable agent name: dot-dewsttlas403-ci

Assuming the required fields appears at the beginning of the log:

Grok: SEVERE:\s%{WORD:agent_status}.*\s+for\s+(?<agent_name>[^\\n]+).

Parameter name cannot contain white space, so I used underscore (_). You can always use "pure" regex like in the 2nd extraction.

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