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  1. Jenkins
  2. JENKINS-50970

SLF4J logging not working in Swarm client

    Details

    • Type: Bug
    • Status: Resolved (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Component/s: swarm-plugin
    • Labels:
    • Environment:
      jenkins v2.108
      swarm v3.12
      JDK 1.8.0
      Windows 7 / CentOS 7.4 host OSes
    • Similar Issues:
    • Released As:
      3.17

      Description

      When launching the Jenkins swarm client, I see the following warning message in the console output:

       

      SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder"

      SLF4J: Defaulting to no-operation (NOP) loger implementation

       

      Consequently, I am unable to generate log files for the service, making it impossible to debug errors and connection issues and such in production. This seems like a silly issue but it is debilitating and it would be great if someone could fix it or tell me how to work around the issue.

       

      I've looked up the slf4j.org website where it describes some workarounds to this error by placing one of the slf4j jars in the Java class path. I downloaded several different versions of slf4j, and copied different jar files contained therein to the default class path, all with no success. Even explicitly setting the java class path to a folder containing all the jars for slf4j didn't work. What am I doing wrong?

      Any help would be greatly appreciated.

        Attachments

          Activity

          Hide
          oleg_nenashev Oleg Nenashev added a comment -

          Classes are just not bundled into Swarm Client.
          slf4j-simple or other LogFactory library should be added to the Swarm Client Plugin so that it works.
          Looks trivial

          Show
          oleg_nenashev Oleg Nenashev added a comment - Classes are just not bundled into Swarm Client. slf4j-simple or other LogFactory library should be added to the Swarm Client Plugin so that it works. Looks trivial
          Hide
          basil Basil Crow added a comment -

          Fixed in #98.

          I've also added documentation for the logging subsystem in #99.

          Show
          basil Basil Crow added a comment - Fixed in #98 . I've also added documentation for the logging subsystem in #99 .
          Hide
          basil Basil Crow added a comment -

          Released in 3.17.

          Show
          basil Basil Crow added a comment - Released in 3.17.

            People

            • Assignee:
              basil Basil Crow
              Reporter:
              leedega Kevin Phillips
            • Votes:
              0 Vote for this issue
              Watchers:
              4 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: