Schedule

The condition configures when the pipeline should trigger a new image build. When the pipelineExecutionStartCondition is set to EXPRESSION_MATCH_AND_DEPENDENCY_UPDATES_AVAILABLE, and you use semantic version filters on the base image or components in your image recipe, EC2 Image Builder will build a new image only when there are new versions of the image or components in your recipe that match the semantic version filter. When it is set to EXPRESSION_MATCH_ONLY, it will build a new image every time the CRON expression matches the current time. For semantic version syntax, see CreateComponent in the EC2 Image Builder API Reference.

Type: String

Valid Values: EXPRESSION_MATCH_ONLY | EXPRESSION_MATCH_AND_DEPENDENCY_UPDATES_AVAILABLE

Required: No

The cron expression determines how often EC2 Image Builder evaluates your pipelineExecutionStartCondition.

For information on how to format a cron expression in Image Builder, see Use cron expressions in EC2 Image Builder.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1024.

Required: No

The timezone that applies to the scheduling expression. For example, "Etc/UTC", "America/Los_Angeles" in the IANA timezone format. If not specified this defaults to UTC.

Type: String

Length Constraints: Minimum length of 3. Maximum length of 100.

Pattern: [a-zA-Z0-9]{2,}(?:\/[a-zA-z0-9-_+]+)*

Required: No