# Create a crawler schedule


You can create a schedule for the crawler using the Amazon Glue console or Amazon CLI.

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#### [ Amazon Web Services Management Console ]

1. Sign in to the Amazon Web Services Management Console, and open the Amazon Glue console at [https://console.amazonaws.cn/glue/](https://console.amazonaws.cn/glue\). 

1. Choose **Crawlers** in the navigation pane.

1. Follow steps 1-3 in the [Configuring a crawler](define-crawler.md) section.

1. In [Step 4: Set output and scheduling](define-crawler-set-output-and-scheduling.md), choose a **Crawler schedule** to set the frequency of the run. You can choose the crawler to run hourly, daily, weekly, monthly or define custom schedule using cron expressions.

   A cron expression is a string representing a schedule pattern, consisting of 6 fields separated by spaces: \$1 \$1 \$1 \$1 \$1 <minute> <hour> <day of month> <month> <day of week> <year> 

   For example, to run a task every day at midnight, the cron expression is: 0 0 \$1 \$1 ? \$1

   For more information, see [Cron expressions](https://docs.amazonaws.cn/glue/latest/dg/monitor-data-warehouse-schedule.html#CronExpressions).

1. Review the crawler settings you configured, and create the crawler to run on a schedule.

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#### [ Amazon CLI ]

```
aws glue create-crawler 
 --name myCrawler \
 --role AWSGlueServiceRole-myCrawler  \
 --targets '{"S3Targets":[{Path="s3://amzn-s3-demo-bucket/"}]}' \
 --schedule cron(15 12 * * ? *)
```

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For more information about using cron to schedule jobs and crawlers, see [Time-based schedules for jobs and crawlers](monitor-data-warehouse-schedule.md).