Command option Sample:aws rds modify-db-cluster

Search command sample in the internet.It is the result.

Modify a setting for an Amazon Aurora DB cluster.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/rds/modify-db-cluster.html

aws rds modify-db-cluster \
    Working with DB Parameter Groups and DB Cluster Parameter Groups - Amazon Aurora : http://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Modifying.html
aws rds modify-db-cluster --db-cluster-identifier
    Passwordless Database Authentication for AWS Lambda - DZone Security : http://dzone.com/articles/passwordless-database-authentication-for-aws-lambd
aws rds modify-db-cluster --db-cluster-identifier
    How to Configure Aurora Parameters on Amazon RDS - Percona Database Performance Blog : http://www.percona.com/blog/2017/08/09/how-to-configure-aurora-rds-parameters/

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