[Solved] You tried to create an RDS instance with the command:aws rds create-db-instance --db-instance-identifier testdb --engine mongo --allocated-storage 20... What is the most likely reason? | AWS

AWS - RDS and Relational Databases

You tried to create an RDS instance with the command:

aws rds create-db-instance --db-instance-identifier testdb --engine mongo --allocated-storage 20 --db-instance-class db.t3.micro --master-username admin --master-user-password secret123

But it failed. What is the most likely reason?

AThe master username is missing

BThe allocated storage is too low

CThe engine name 'mongo' is not supported by RDS

DThe instance class db.t3.micro is invalid

Step-by-Step Solution

Solution:

Step 1: Check the engine parameter validity
The engine parameter is set to 'mongo', which is not a supported RDS engine. MongoDB is not supported by RDS.
Step 2: Verify other parameters
Allocated storage of 20 GB and instance class db.t3.micro are valid. Master username is provided.
Final Answer:
The engine name 'mongo' is not supported by RDS -> Option C
Quick Check:
Unsupported engine name causes failure [OK]

Quick Trick: Check engine names carefully; unsupported names cause errors [OK]

Common Mistakes:

MISTAKES

Assuming MongoDB is supported by RDS
Blaming storage size or instance class incorrectly
Overlooking the exact error message

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You tried to create an RDS instance with the command:

Step 1: Check the engine parameter validity

Step 2: Verify other parameters

Final Answer:

Quick Check:

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