I have an ECS task executed from a Lambda function. This task will perform some basic SQL operations (e.g. SELECT, INSERT, UPDATE) on an RDS instance running MySQL. What is the proper way to manage access from the ECS task to RDS?
I am currently connecting to RDS using a security group rule where port 3306 allows a connection from a particular IP address (where an EC2 instance resides).
I am in the process of moving this functionality from EC2 to the ECS task. I looked into IAM policies, but the actions appear to manage AWS CLI RDS operations, and are likely not the solution here. Thanks!
IAM roles and Security Groups are two totally different things that serve different purposes. You have to open the Security Group to allow any network traffic to access the RDS server. Instead of whitelisting the IP address you should whitelist the inbound Security Group.
For example if the RDS server is in Security Group 1, and the ECS server is in Security Group 2, you can enter the ID of Security Group 2 in the inbound access rule of Security Group 1. Then you don't have to worry about servers changing IP addresses.
Related
I see a lot of articles online where EC2 is involved, but since my backend is essentially serverless I have not found much information how to access my RDS once it is turned private. Can anyone point me in the right direction?
Current state:
Public MySQL RDS
RDS is accessed by a MySQL client on my local machine (MySQL Workbench) and AWS Lambda functions via my web application (both connecting via SSL)
Future state:
Private MySQL RDS
Private RDS would continue to be accessed by only my local machine and only the noted AWS Lambda functions via my web application (I assume continuing to use SSL?)
In your scenario your Lambda functions will need to be configured to run in the VPC if they are not already. That is the only change required for the Lambda functions.
However, When you switch the RDS instance to private, that means it only accepts connections from within the VPC. So you can't make connections directly from your local computer to the database anymore. You have to go through some sort of "bridge" to get your local computer into the AWS VPC network.
In this scenario people either use an EC2 instance as a bastion host, or they create a VPN connection from their local computer into the AWS VPC. AWS Client VPN is a managed service you could used for this.
You'll need to evaluate the Client VPN pricing, but I think you may find that a single t4g.nano EC2 bastion host is probably cheaper, and you can also stop the instance when you don't need it to really cut down the cost.
You can use VPC also with Lambda. Lambda and RDS can be in the same VPC, or in separate VPC’s peered together. Aws documentation for this scenario can be found here: https://aws.amazon.com/premiumsupport/knowledge-center/connect-lambda-to-an-rds-instance/
You can use Basti, which is a CLI tool that manages the EC2 bastion instance for you. The tool keeps the instance stopped when it's not used to minimize the solution cost, performs software updates to maintain the bastion instance secure, and provides a convenient CLI that can be used locally and in CI/CD pipelines.
I am writing an AWS Lambda function to connect to a MySQL instance running on EC2. I have associated the Lambda function with the same subnet and security group that the EC2 is configured in. I checked the Lambda function's IAM roles and that has AWSLambdaVPCAccessExecutionRole policy attached to it. However I am still not able to connect to the MySQL instance.
I tried allowing traffic from anywhere and that worked but now I am not sure how to connect to the MySQL instance with stricter security rules.
I am using Kotlin to write my lambda function and using serverless to deploy changes to lambda.
I have tried every possible solution available online to make this happen but I haven't had any positive results yet.
You have associated the Lambda function with the same security group. But just that would not do. You also need to add an ingress rule to allow traffic to the security group from itself. Basically, you need to self reference the security group.
Add a rule to allow traffic on the mysql port from sg-xxxxxxxx.
I have an application running on EC2 instances that store data in an RDS instance. All of these instances are in an AWS VPC with security groups configured to allow them to connect to each other.
For reporting purposes, I would like to connect to the RDS instance from my laptop (e.g. using SQLAlchemy) to run simple queries. Every time I try to connect using the connection string that the EC2 apps use, the connection times out.
For Google, one can use the Cloud SQL proxy for this, but I can't find an analogous product for AWS. Instead, it seems like what I am supposed to do is attach an internet gateway to the VPC and configure the security groups to allow connection from my machine. However, the documents are unclear on how to do this other than allowing all inbound connections or allowing a static IP. Unfortunately my laptop doesn't have a static IP, and I'm uncomfortable allowing all inbound connections as it seems insecure and an invitation to attacks. I also have not been able to find a way to configure a security group to allow connections based on IAM credentials for example using the AWS CLI. Since I will be routinely generating reports, a solution that involves updating a security group (i.e. allowing my current IP) every time I want to connect seems suboptimal.
I have tried following the following documents, but so far have had no success in finding a solution that does not allow all connections:
Allow users to connect to RDS using IAM*
Connecting to RDS instance from command line
Connecting to RDS on VPC from internet
*My RDS instance configuration does not allow me to enable IAM authentication, I'm not sure why
IAM Database Authentication is not supported for the configuration in the DB Instance db.
Modify your Db Instance to another instance class and try again.
(Service: AmazonRDS; Status Code: 400; Error Code: InvalidParameterCombination;
Request ID: a6194fb8-2ab9-4a6a-a2be-63835e6e0184)
Is there something I'm not understanding or overlooking? Is allowing connections from all IPs not a big deal since the DB instance is still secured by DB user credentials?
Select this connection as per screenshot. Then fill up all details use your nat instance .pem file to connect. Its like you are connecting to VPC through Nat gateway or Internet gateway bypassing this.
Another option to install VPN on VPC and connect.
By default, when you open the bind-address to listen to the outside, the default communication between the MySQL client & server is not secured, that means anyone that can do a MitM attack can view every transactions made.
There is options out there to protect against this type of attack (SSH Tunneling or enabling SSL in MySQL) but from what I understand, Amazon RDS doesn't implement, by default, any SSL security.
So I'm wondering, when you create an RDS instance, is it like installing MySQL on a server and opening the 3306 port or am I missing something?
A few points. Firstly AWS RDS for mysql does support ssl. This is discussed here
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_MySQL.html#MySQL.Concepts.SSLSupport
Second, the usual way to arrange servers in a AWS VPC is to have "private" and "public" subnets. The private subnets route to other private hosts and perhaps to other hosts in the same VPC. But they have no Elastic IPs and no direct access to the Internet Gateway. It is usual to put databases on private subnets so that their ports are not exposed
There is a nice diagram on this page showing this concept
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Security.html
Lastly, AWS RDS exists within the philosphy of the shared responsiblity model
This tries to make it clear what security AWS services provide and what is supposed to be the responsibility of the customer
If you're creating an instance you've to also allow port 3306 to be open at your endpoints. This means you've to also configure your security settings as to which IP you've to allow for this connection. Regarding SSL security or SSH, as a good practice you should rely on ssh keys with Pass phrase.
I have two different AWS accounts running EC2 instances and RDS volumes set up in the following way:
AWS Account #1
EC2 1(Production)
RDS 1(Production)
AWS Account #2
EC2 2(Development)
RDS 2(Development)
The reason I separated the development and production was to take advantage of the AWS free tier usage while we test our app.
My question is whether it's possible for me to access the RDS 2 (Production) from EC2 1 (Development) for testing purposes, and if so how I'd go about doing it. I've been playing around with the VPC settings and can't seem to get it work.
Basically can I access the RDS of one AWS account from an EC2 of another AWS account that I own?
If you want to keep your traffic inside the VPC realms, then you need to create a Peering Connection between the 2 VPCs. Peering Connections can be created across different AWS accounts very easily by referencing the VPC ID in the other account, and then you will need to login to that account and Accept/Approve the connection.
Then you need to create rules in your routing tables to let the 2 networks communicate.