How to Connect to a Postgres Database on EC2 Using DBeaver or PgAdmin?

It could be a security group issue. You need to make sure that the security group associated with your instance allows inbound traffic on the port that Postgres uses. If it’s set up correctly and you still can’t connect, check your Postgres configuration to see if it's listening on the right address.

There are a few potential culprits like the security group settings, incorrect listening address in the Postgres config, or even something wrong with the peer authentication setup. If you're able to SSH into the VM, at least you know it’s not a connectivity issue with your instance itself.

First thing to check is your EC2 security group settings. Make sure it's allowing inbound traffic from your local machine on the Postgres port (default is 5432). If you're not sure, double-check those settings and ensure you're allowing traffic from your IP address! There's also a chance you might have to add a rule after you’ve created the instance if you forgot to do it initially.