role_arn=$(aws iam create-role --role-name tp-eks-role --assume-role-policy-document file://assume-policy.json | jq .Role.Arn | sed s/\"//g) code example
Example: aws sts assume-role example
aws sts assume-role --role-arn arn:aws:iam::123456789012:role/xaccounts3access --role-session-name s3-access-example