Adds the specified IAM role to the specified instance profile. An
instance profile can contain only one role. (The number and size of IAM
resources in an AWS account are limited. For more information, see IAM and STS Quotas
in the IAM User Guide.) You can remove the existing role and then add
a different role to an instance profile. You must then wait for the
change to appear across all of AWS because of eventual consistency. To
force the change, you must disassociate the instance profile
and then associate the instance profile,
or you can stop your instance and then restart it.
The caller of this API must be granted the PassRole
permission on the
IAM role by a permissions policy.
For more information about roles, go to Working with Roles.
For more information about instance profiles, go to About Instance Profiles.