CronTab#

Defines a set of utilities for specifying cron schedules in Kubernetes CronJob objects with Piceli.

Cron expressions are a powerful way to specify the timing and frequency of actions within a Kubernetes cluster. The CronTab module in Piceli provides validation for cron expressions and convenience functions to generate common scheduling patterns.

Features#

Cron Expression Validation: Ensures that cron expressions are valid before applying them to CronJob definitions.
Utility Functions: Simplify the creation of common cron scheduling patterns, such as running jobs every few minutes, hours, or days.

Usage#

The module is utilized in defining the schedule attribute for Kubernetes CronJob objects, as seen in the module. It ensures that schedules are correctly formatted and valid according to cron syntax.

Examples#

Every X Minutes: Runs a job every 10 minutes.
```
schedule = crontab.every_x_minutes(10)
```
Every X Hours: Runs a job every hour, on the hour.
```
schedule = crontab.every_x_hours(1)
```
Every X Days: Runs a job daily at midnight.
```
schedule = crontab.every_x_days(1)
```
Daily at Specific Time: Runs a job every day at 14:30.
```
schedule = crontab.daily_at_x(14, 30)
```
Hourly at Specific Minutes: Runs a job at minutes 15 and 45 of every hour.
```
schedule = crontab.hourly_at_minutes_x([15, 45])
```

These utility functions provide a straightforward way to define the timing and frequency of CronJob tasks in a Kubernetes cluster using Piceli.