MongoDB Atlas VPC peering
Hi AWS,
I am deploying a web application backend for testing purpose on Amazon EC2 instance. The instance is inside a VPC. The EC2 and VPC are in us-east-2 Ohio region and the MongoDB Atlas cluster is in us-east-1 N. Virginia region.
The Atlas CIDR (VPC region) is same as Amazon VPC i.e. us-east-2 Ohio. The VPC CIDR is 172.31.0.0/20 and the Atlas VPC CIDR is 192.168.248.0/21.
When I am checking the logs on the EC2 instance I am seeing the error: ERROR [MongooseModule] Unable to connect to the database. Retrying (1)...
The problem is I can't enable the Access from Anywhere option 0.0.0.0/0 assuming if I need to perform the same in production.
Please suggest how to fix this.
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If you are doing VPC peering, you can refer to the security group of the peering destination as shown in the following document.
So try to put a setting in the Mongo DB security group to allow the EC2 security group.
https://docs.aws.amazon.com/vpc/latest/peering/vpc-peering-security-groups.html
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Agree.. I have done the exact same before when using VPC peering, you can specifiy a security group from another VPC