Injecting task configuration via Bamboo variables

All tasks support configuration via Bamboo variables – variables can be substituted in task parameters for AWS resource management, and variables are automatically defined from AWS resources affected by a task.


To empower advanced build and automation scenarios, it his highly recommended to become acquainted with using global, plan, deployment, or build-specific Bamboo variables.

Variable substitution

Variables are substituted in all task configuration text fields (e.g. Stack Name, Template URL, Instance ID, Volume ID etc.).

Configuration as code

Configuration as code is not yet natively supported in Bamboo. You can partially work around this limitation as outlined in How to provide task configuration from an external source like a file.


Sensitive data masking

Tasks may emit sensitive data like credentials which are not supposed to surface in build logs - this can be achieved as follows:

  • if the variable key contains the phrase "password", the value will be masked with "********" in the build logs; for example, if the key is "password", "awsAccessKeyPassword" or "awsSecretKeyPassword", the build log will show the substituted value as "********"

Variable definition

Variables are defined by most tasks for reuse in subsequent tasks, see Bamboo Variable Substitution/Definition for details, and each task's documentation for example log outputs.

Variable namespace and scope

As of release 2.21.0, you can now specify the namespace and scope for Bamboo variables generated by all applicable AWS tasks (this is similar to the Inject Bamboo variables task that has been included with Bamboo as of release 6.7):

You can now pass a variable between stages, pass a variable from a plan to a deployment project, and you can use multiple tasks within the same job without overriding variables from preceding tasks by adjusting the namespace. The tasks default to the preceding behavior with local scope and a namespace so that this remains an opt-in choice for advanced use cases.


This example  illustrates the variable generation pattern:

  • variables have a dedicated prefix like*, with * being a task specific prefix, e.g.

  • variables referring to a collection of resources provide their ids in a semicolon separated list (i.e. the same format available on input), e.g. ${} with values i-a316b842;i-b4210842 (line 2)

  • you can refer to these variables from subsequent tasks via something like ${} (line 6) - however, given script access to such a named resource is difficult, there is a shortcut to ease reusing the first (and often only) affected resource via something like ${} (line 19):

    Creating common variables for 2 resources affected by task: ... i-a316b842;i-b4210842 Creating resource variables for instance 'i-a316b842': ... i-a316b842 ... running ... ip-10-0-0-241.ec2.internal ... ... ... null ... 20150716T080402Z ... Name ... taws-it-2.0.0 Creating resource variables for instance 'i-b4210842': ... <skipped> Creating common variables for first resource affected by task: Creating resource variables for instance 'i-a316b842': ... i-a316b842 ... running ... ip-10-0-0-241.ec2.internal ... ... ... null ... 20150716T080402Z ... Name ... taws-it-2.0.0


  •  variables are also available as environment variables in the Script task for example, albeit named slightly different, e.g. $bamboo_custom_aws_cfn_stack_StringWithRegex (Unix) or %bamboo_custom_aws_cfn_stack_StringWithRegex% (Windows)

  •  variables are locally scoped and thus only reusable in subsequent tasks and not in other jobs/stages due to the implied concurrency, see the following discussion and workaround

Contextual entity variables

Refer to Injecting contextual entity variables into task configurations for details.

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