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Jenkins Troubleshooting

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Jenkins is one of the important CI tools which many organization used as part of their Build and DevOps infrastructure. I am going to consolidate all the troubleshooting techniques which can be used in order to find any issues related in Jenkins. 

Step 1. Take a look at Log generated by the Jenkins and plugins via http://jenkins-master/log

Note: Here you can also create your own logger and and set your custom log levels such as (severe, warning, info, config, file, finer, finest, all)

Step 2. Also, you can look at /var/log/jenkins/jenkins.log via doing "tail -f /var/log/jenkins/jenkins.log" and check carefully whats breaking it. 

Log file in windows - jenkins.err.log & jenkins.out.log Read More Click here

Reference:- This article was originally posted on scmGalaxy.com

Comments

  1. Monika kumari13 January 2026 at 21:56

    Thanks for this concise walkthrough of basic Jenkins troubleshooting techniques — starting with checking Jenkins logs via the web UI and system log files is a foundational step for diagnosing build failures and configuration issues, and it mirrors best practices in real‑world CI/CD environments. Modern Jenkins troubleshooting often also involves reviewing agent connectivity, plugin compatibility, console output, and pipeline performance to identify root causes behind failed builds or stalled jobs, as well as keeping plugins up‑to‑date and monitoring resource usage on master and agent nodes to prevent run‑time issues. Combining these log‑first debugging tips with careful configuration review helps teams maintain stable and reliable Jenkins automation workflows.

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