Configuring Jenkins Trigger Poll SCM

How Does Jenkins Poll SCM Work?

Jenkins periodically checks the version control system by comparing the current state with the previous state. If changes are detected, a build will trigger.

What Is The Cron Syntax For Poll SCM Frequency?

The cron expression defines the frequency of polling. For example, */10 * * * * means every 10 minutes. Each * represent minute, hour, day, month, week respectively.

How Can I Troubleshoot Poll SCM Issues?

Check Jenkins console output for any error messages. Verify that your version control system credentials are correct and that Jenkins has the necessary permissions.

What does The Jenkins Warning “Spread Load Evenly By Using ‘H/30 * * * ’ rather than ‘/30 * * * *’” Mean, And How Should It Be Addressed?

Jenkins will advise to use H/30 * * * * syntax rather than */30 * * * * to evenly distribute the load on the system when scheduling tasks, it is recommended to use the symbol H (hash).

Jenkins is an open-source automation server, that allows us to automate the software development process through continuous integration, continuous testing, and continuous deployment/delivery with seamless integration of different plugins like git, maven, sonar qube, frog, tomcat, etc…One such crucial feature is the Poll SCM (Source Code Management) option, enabling Jenkins to periodically check your version control system for changes and trigger builds accordingly. Which mainly helps Developers or DevOps engineers integrate their newly developed code into the CI pipeline.