Cronjob
A Kubernetes CronJob is a workload resource that creates Jobs according to a specified recurring schedule.
Kubernetes in Action, Second Edition
A CronJob controller is a Kubernetes controller that creates Jobs from a CronJob's template according to its schedule.
- How it is used
- Schedules finite Kubernetes tasks by creating Jobs at specified times or regular intervals.
- How deep it goes
- Works through a manifest, crontab schedules, controller behavior, and operational controls, without descending into controller implementation.
- Examples
- Demonstrates a minute-by-minute statistics Job with a YAML manifest and kubectl status, Job, and pod listings.
- What you can do after
- Operate/configure it to schedule Jobs, inspect runs, manage overlap and missed starts, and suspend or delete the schedule.
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Kubernetes for Developers
A Kubernetes CronJob is a workload resource that creates Jobs on a recurring schedule.
- How it is used
- Schedules recurring batch work by creating Kubernetes Jobs at specified intervals.
- How deep it goes
- Explains nested CronJob, Job, and Pod templates with a complete manifest, but does not provide exhaustive API reference.
- Examples
- Demonstrates a five-minute worker schedule, kubectl creation, and resulting Job and Completed Pod.
- What you can do after
- Build it from scratch with a batch/v1 manifest and verify scheduled Jobs and Pods using kubectl.
Related concepts
- jobproduces · A Kubernetes Job is a workload resource that runs Pods for a finite task and tracks execution until the required successful completions are reached.
- kubectl patchuses · kubectl patch is a Kubernetes command that updates selected fields of a Kubernetes object without replacing its entire manifest.
- job templatehas part · A Job template is a CronJob specification that defines the Jobs created for each scheduled execution.
- crontab formatconfigures · Crontab format is a field-based syntax for specifying recurring execution times in Unix-like scheduling systems.
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