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Jenkins cron scheduling guide
Understand Jenkins build schedules, cron syntax, the H symbol, and timezone behavior.
Jenkins uses cron-like syntax for scheduled builds, with one important extension: H.
What H means
H spreads scheduled jobs across a stable hash value so many jobs do not all start at the same minute.
H/15 * * * *This means roughly every 15 minutes, distributed by Jenkins.
Practical advice
- Use
Hfor large Jenkins installations. - Avoid scheduling every job at exactly midnight.
- Check controller timezone when debugging scheduled builds.