java - How to enable debug logging on jenkins? -

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i trying debug how ssh-slaves behaving jenkins documentation https://wiki.jenkins-ci.org/display/jenkins/logging extreamly incomplete.

i added new logger , added:

  • "hudson." all
  • "org.jenkinsci.plugins." all

still new log added not updated @ all.

also, found no information on how enable logging everything, empty, start or what?

update: tried add -djava.util.logging.loglevel=fine command line starting jenkins surprise did not had effect on jenkins_log did had effect on log can check on gui.

typically, use gui viewing logs, why had effect; however, if want gui doesn't provide (such better information of going on slave), may have container you're running jenkins in, review logging config, set debug, , read logs there, or try running slave manually node...

if on node, can try running slave like: java -jar slave.jar -jnlpurl http://<yourjenkinsurl>:8080/<computer>/<slave>/slave-agent.jnlp better details specific slave's interaction master server.

this known issue. appears resolved in later builds: https://issues.jenkins-ci.org/browse/jenkins-19453


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