AWS CLI RDS create-db-instance - Unknown options: groups, Subnet

Question

Hi everyone, I am trying to write a bash script and using the AWS CLI in a Linux environment to automate the creation of some AWS infrastructure.  I am trying to use the aws rds create-db-instance command to create my RDS instance but I am running into an error: *Unknown options: groups, Subnet*

I have done some research and know that the groups and Subnet options are from AWS CLI v1 and is depreciated but I am using the latest version of AWS CLI and do not use those options in my command.

Interestingly enough if I run this command outside my bash script in my Linux terminal it does not have this issue and the RDS instance is created.

Any suggestions or ideas would be greatly appreciated thank you.

aws --version
aws-cli/2.10.1 Python/3.9.11 Linux/5.10.16.3-microsoft-standard-WSL2 exe/x86_64.ubuntu.22 prompt/off

aws rds create-db-instance \
        --debug \
        --db-name $rds_db_name \
        --db-instance-identifier $rds_identifier \
        --allocated-storage $rds_allocated_storage \
        --db-instance-class $rds_instance_class \
        --engine $rds_engine \
        --master-username $rds_master_username \
        --master-user-password $rds_master_user_password \
        --vpc-security-group-ids $security_group_id_db \
        --db-subnet-group-name $subnet_group_name

Debug logs

2023-02-19 09:58:27,509 - MainThread - botocore.hooks - DEBUG - Event building-command-table.main: calling handler 
2023-02-19 09:58:27,509 - MainThread - botocore.hooks - DEBUG - Event building-command-table.main: calling handler 
2023-02-19 09:58:27,509 - MainThread - botocore.hooks - DEBUG - Event building-command-table.main: calling handler 
2023-02-19 09:58:27,509 - MainThread - botocore.hooks - DEBUG - Event building-command-table.main: calling handler >
2023-02-19 09:58:27,509 - MainThread - botocore.hooks - DEBUG - Event building-command-table.main: calling handler 
2023-02-19 09:58:27,510 - MainThread - botocore.hooks - DEBUG - Event building-command-table.main: calling handler >
2023-02-19 09:58:27,510 - MainThread - botocore.loaders - DEBUG - Loading JSON file: /usr/local/aws-cli/v2/2.10.1/dist/awscli/data/cli.json
2023-02-19 09:58:27,513 - MainThread - botocore.hooks - DEBUG - Event top-level-args-parsed: calling handler 
2023-02-19 09:58:27,513 - MainThread - botocore.hooks - DEBUG - Event top-level-args-parsed: calling handler 
2023-02-19 09:58:27,513 - MainThread - botocore.hooks - DEBUG - Event top-level-args-parsed: calling handler 
2023-02-19 09:58:27,513 - MainThread - botocore.hooks - DEBUG - Event top-level-args-parsed: calling handler 
2023-02-19 09:58:27,513 - MainThread - botocore.hooks - DEBUG - Event top-level-args-parsed: calling handler 
2023-02-19 09:58:27,513 - MainThread - botocore.hooks - DEBUG - Event top-level-args-parsed: calling handler 
2023-02-19 09:58:27,514 - MainThread - awscli.clidriver - DEBUG - CLI version: aws-cli/2.10.1 Python/3.9.11 Linux/5.10.16.3-microsoft-standard-WSL2 exe/x86_64.ubuntu.22 prompt/off
2023-02-19 09:58:27,514 - MainThread - awscli.clidriver - DEBUG - Arguments entered to CLI: ['rds', 'create-db-instance', '--debug', '--db-name', 'bookstack_db', '--db-instance-identifier', 'Assignment2-rds', '--allocated-storage', '5', '--db-instance-class', 'db.m6i.large', '--engine', 'mysql', '--master-username', 'root', '--master-user-password', 'password', '--vpc-security-group-ids', 'sg-044926a269ca7870c', '--db-subnet-group-name', 'RDS', 'Subnet', 'group']
2023-02-19 09:58:27,514 - MainThread - botocore.hooks - DEBUG - Event session-initialized: calling handler 
2023-02-19 09:58:27,514 - MainThread - botocore.hooks - DEBUG - Event session-initialized: calling handler 
2023-02-19 09:58:27,514 - MainThread - botocore.hooks - DEBUG - Event session-initialized: calling handler 
2023-02-19 09:58:27,514 - MainThread - botocore.hooks - DEBUG - Event session-initialized: calling handler 
2023-02-19 09:58:27,515 - MainThread - botocore.hooks - DEBUG - Event session-initialized: calling handler 
2023-02-19 09:58:27,516 - MainThread - botocore.utils - DEBUG - IMDS ENDPOINT: http://169.254.169.254/
2023-02-19 09:58:27,518 - MainThread - botocore.hooks - DEBUG - Event session-initialized: calling handler 
2023-02-19 09:58:27,518 - MainThread - botocore.hooks - DEBUG - Event session-initialized: calling handler 
2023-02-19 09:58:27,531 - MainThread - botocore.loaders - DEBUG - Loading JSON file: /usr/local/aws-cli/v2/2.10.1/dist/awscli/botocore/data/rds/2014-10-31/service-2.json
2023-02-19 09:58:27,540 - MainThread - botocore.loaders - DEBUG - Loading JSON file: /usr/local/aws-cli/v2/2.10.1/dist/awscli/botocore/data/rds/2014-10-31/service-2.sdk-extras.json
2023-02-19 09:58:27,547 - MainThread - botocore.hooks - DEBUG - Event building-command-table.rds: calling handler 
2023-02-19 09:58:27,548 - MainThread - botocore.hooks - DEBUG - Event building-command-table.rds: calling handler 
2023-02-19 09:58:27,548 - MainThread - botocore.hooks - DEBUG - Event building-command-table.rds: calling handler 
2023-02-19 09:58:27,559 - MainThread - botocore.loaders - DEBUG - Loading JSON file: /usr/local/aws-cli/v2/2.10.1/dist/awscli/botocore/data/rds/2014-10-31/waiters-2.json
2023-02-19 09:58:27,561 - MainThread - botocore.hooks - DEBUG - Event building-command-table.rds: calling handler >
2023-02-19 09:58:27,564 - MainThread - awscli.clidriver - DEBUG - OrderedDict([('db-name', ), ('db-instance-identifier', ), ('allocated-storage', ), ('db-instance-class', ), ('engine', ), ('master-username', ), ('master-user-password', ), ('db-security-groups', ), ('vpc-security-group-ids', ), ('availability-zone', ), ('db-subnet-group-name', ), ('preferred-maintenance-window', ), ('db-parameter-group-name', ), ('backup-retention-period', ), ('preferred-backup-window', ), ('port', ), ('multi-az', ), ('no-multi-az', ), ('engine-version', ), ('auto-minor-version-upgrade', ), ('no-auto-minor-version-upgrade', ), ('license-model', ), ('iops', ), ('option-group-name', ), ('character-set-name', ), ('nchar-character-set-name', ), ('publicly-accessible', ), ('no-publicly-accessible', ), ('tags', ), ('db-cluster-identifier', ), ('storage-type', ), ('tde-credential-arn', ), ('tde-credential-password', ), ('storage-encrypted', ), ('no-storage-encrypted', ), ('kms-key-id', ), ('domain', ), ('copy-tags-to-snapshot', ), ('no-copy-tags-to-snapshot', ), ('monitoring-interval', ), ('monitoring-role-arn', ), ('domain-iam-role-name', ), ('promotion-tier', ), ('timezone', ), ('enable-iam-database-authentication', ), ('no-enable-iam-database-authentication', ), ('enable-performance-insights', ), ('no-enable-performance-insights', ), ('performance-insights-kms-key-id', ), ('performance-insights-retention-period', ), ('enable-cloudwatch-logs-exports', ), ('processor-features', ), ('deletion-protection', ), ('no-deletion-protection', ), ('max-allocated-storage', ), ('enable-customer-owned-ip', ), ('no-enable-customer-owned-ip', ), ('custom-iam-instance-profile', ), ('backup-target', ), ('network-type', ), ('storage-throughput', ), ('manage-master-user-password', ), ('no-manage-master-user-password', ), ('master-user-secret-kms-key-id', ), ('ca-certificate-identifier', )])
2023-02-19 09:58:27,565 - MainThread - botocore.hooks - DEBUG - Event building-argument-table.rds.create-db-instance: calling handler 
2023-02-19 09:58:27,565 - MainThread - botocore.hooks - DEBUG - Event building-argument-table.rds.create-db-instance: calling handler 
2023-02-19 09:58:27,565 - MainThread - botocore.hooks - DEBUG - Event building-argument-table.rds.create-db-instance: calling handler 
2023-02-19 09:58:27,565 - MainThread - botocore.hooks - DEBUG - Event building-argument-table.rds.create-db-instance: calling handler 
2023-02-19 09:58:27,577 - MainThread - botocore.loaders - DEBUG - Loading JSON file: /usr/local/aws-cli/v2/2.10.1/dist/awscli/botocore/data/rds/2014-10-31/paginators-1.json
2023-02-19 09:58:27,578 - MainThread - botocore.hooks - DEBUG - Event building-argument-table.rds.create-db-instance: calling handler 
2023-02-19 09:58:27,579 - MainThread - botocore.hooks - DEBUG - Event before-building-argument-table-parser.rds.create-db-instance: calling handler >
2023-02-19 09:58:27,579 - MainThread - botocore.hooks - DEBUG - Event before-building-argument-table-parser.rds.create-db-instance: calling handler >
2023-02-19 09:58:27,579 - MainThread - botocore.hooks - DEBUG - Event before-building-argument-table-parser.rds.create-db-instance: calling handler >
2023-02-19 09:58:27,579 - MainThread - botocore.hooks - DEBUG - Event building-command-table.rds_create-db-instance: calling handler 
2023-02-19 09:58:27,579 - MainThread - botocore.hooks - DEBUG - Event building-command-table.rds_create-db-instance: calling handler >
2023-02-19 09:58:27,582 - MainThread - awscli.clidriver - DEBUG - Exception caught in main()
Traceback (most recent call last):
  File "awscli/clidriver.py", line 460, in main
  File "awscli/clidriver.py", line 595, in __call__
  File "awscli/clidriver.py", line 764, in __call__
awscli.arguments.UnknownArgumentError: Unknown options: group, Subnet

Accepted Answer

This is from your debug log above

```ts
[
  'rds', 
  'create-db-instance',
   '--debug',
   '--db-name', 'bookstack_db',
   '--db-instance-identifier', 'Assignment2-rds',
   '--allocated-storage', '5',
   '--db-instance-class', 'db.m6i.large',
   '--engine', 'mysql', 
  '--master-username', 'root',
   '--master-user-password', 'password',
   '--vpc-security-group-ids', 'sg-044926a269ca7870c',
   '--db-subnet-group-name', 'RDS', 'Subnet', 'group'
] 
```

You are passing multiple (3) values to the `db-subnet-group-name` parameter.

I guess in the bash code where you fill `$subnet_group_name` you are getting an array.

Regards, Jacco

AWS CLI RDS create-db-instance - Unknown options: groups, Subnet

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