このエラーメッセージに関する原因と対処に関して説明します。
エラーメッセージ(英語)：
codedeploy cannot assume role
対処
関連リンク
ステップ 3: CodeDeploy のサービスロールを作成する - AWS CodeDeploy
https://docs.aws.amazon.com/ja_jp/codedeploy/latest/userguide/getting-started-create-service-role.ht・・・
サービスロールの作成 ...
https://docs.aws.amazon.com/ja_jp/codedeploy/latest/userguide/getting-started-create-service-role.ht・・・
サービスロールの作成 (CLI)
https://docs.aws.amazon.com/ja_jp/codedeploy/latest/userguide/getting-started-create-service-role.ht・・・
サービスロール ARN の取得 ...
https://docs.aws.amazon.com/ja_jp/codedeploy/latest/userguide/getting-started-create-service-role.ht・・・
Step 3: Create a Service Role for CodeDeploy - AWS CodeDeploy
https://docs.aws.amazon.com/codedeploy/latest/userguide/getting-started-create-service-role.html
Create a Service Role ...
https://docs.aws.amazon.com/codedeploy/latest/userguide/getting-started-create-service-role.html#get・・・
Create a Service Role (CLI)
https://docs.aws.amazon.com/codedeploy/latest/userguide/getting-started-create-service-role.html#get・・・
Get the Service Role ARN ...
https://docs.aws.amazon.com/codedeploy/latest/userguide/getting-started-create-service-role.html#get・・・
AWS CodeDeploy: Service role Cannot assume role provided - Stack ...
https://stackoverflow.com/questions/44602873/aws-codedeploy-service-role-cannot-assume-role-provided・・・
Can't get AWS CodeDeploy to recognize my on-premises ...
https://stackoverflow.com/questions/49018936/cant-get-aws-codedeploy-to-recognize-my-on-premises-ins・・・