I have a situation to use AWS private(internal-facing) application load balancer (not a network load balancer) in the api gateway. Can anyone please guide me how to use ALB in the api gateway.
It is possible to integrate API Gateway with a private or internal facing ALB using http api route with private resource integration through a VPC link.
I've done so with an API Gateway --> VPC link --> internal facing ALB --> EC2 cluster with fargate in private subnets
See https://stackoverflow.com/a/67413951/2948212 for a step by step guide.
Related
I have an ECS cluster with all private IPs and an internal application load balancer. I can access my application load balancer via VPN, but I want to add an API Gateway REST API and serve these APIs publicly. However, there is no option for an application load balancer in the REST API VPC Link section. I am wondering if this is possible?
Amazon API Gateway REST API only supports Network Load Balancer (NLB) for private integrations via VPCLink.
One option in this situation is to create an NLB with the existing ALB as a target group (note that this will incur additional cost). Connect the API Gateway REST API to the NLB via VPCLink.
The following references might be useful:
https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-nlb-for-vpclink-using-console.html
https://aws.amazon.com/blogs/networking-and-content-delivery/application-load-balancer-type-target-group-for-network-load-balancer/
I have deployed an API Gateway on GCP. I would like to attach a static IP to the gateway so that I can add the IP to an allowlist of another service, that the API Gateway forwards requests to. The service is a third-party service, that only accepts requests from IPs on their allowlist.
I have set up a load balancer for the API Gateway, which does have a global static IP attached. However, this does solve the egress traffic, I see in the logs that the IP isn't static. Is there a way that I can attach a static IP to the API Gateway for egress, so that I can add a single IP to the other service?
Any help on this would be appreciated!
You can't add egress control on API Gateway. A workaround is to create a proxy Cloud Functions that have a static egress IP. There is an overcost for the Cloud Functions processing and for the serverless VPC connector that you have to use.
Another solution is to host the equivalent of API Gateway yourselves on Cloud Run for example (the open source project is name ESPv2, and I wrote an article on that (before the existence of the managed solution: API Gateway) and to use the similar configuration (serverless VPC connector and Cloud NAT) on the Cloud Run service.
I want to use API Gateway to route between multiple microservices. E.g: domain.com/app1, domain.com/app2 etc.
Each service has an internal Application Load Balancer (ALB).
API Gateway has a VPC Link configured correctly.
The problem is that routes such as domain.com/app1/hello are redirected to internal.app1/app1/hello instead of internal.app1/hello.
Notice that the prefix app1 is not removed.
It can be solved when I use HTTP redirection in API Gateway, but that requires an external load balancer which I want to avoid. I didn't see an option to use path variables with private ALB integration.
Please advise. Thank you in advance.
Problem is solved.
The solution is to use a REST API Gateway (instead of HTTP Gateway) integrated with a Network Load Balancer (NLB) via a VPC Link.
The AWS REST API in AWS API Gateway allows using path variables with private integration (in this case, the NLB).
Summary of the solution:
API Gateway REST API
Private Network Load Balancer
REST API VPC Link (to the NLB)
Use a proxy resource with private integration in the routes configuration
I am trying to understand the use of API Gateway along with AWS ALB (Ingress Controller) for the EKS cluster.
Let's say,
there are 10 microservices in the AWS EKS cluster running on 10 pods. The EKS cluster is in Private VPC.
I can create Kubernetes Ingress which will create an ALB and provide rule-based routing. The ALB will be in Public VPC and I believe, AWS will allocate a public ip to the ALB. I can configure the ALB behind Route53 to access using the domain name. My understanding says that ALB supports multiple features including host or path based routing, TLS (Transport Layer Security) termination, WebSockets, HTTP/2, AWS WAF (Web Application Firewall) integration, integrated access logs, and health checks.
So, security wise there should not be any challenge. Am I wrong?
Please refer Link of the above mentioned solution architecture.
Is there any specific use case where I need to use AWS API Gateway in front of AWS ALB in the above-mentioned architecture?
What are additional benefits the AWS API Gateway has along with AWS ALB?
Should I put AWS ALB in the Private VPC if decided to use AWS API Gateway in front of that?
With API GW you will get rate limiting, throttling and if you want to authenticate and authorize requests based on OAUTH or any other auth model that can be done with API GW.
I have a problem configuring my AWS API Gateway:
I have an API deployed in an EKS cluster, and it has a public load balancer, so right now, this API is accessible from everywhere. I want to allow access to this API only from AWS API Gateway, so if anyone wants to use the API, it has to be through AWS API Gateway.
The problem is that I don't know how to allow traffic to the API only from API Gateway. I tried using a security group, but AWS API Gateway IP changes all the time. I tried also using an internal load balancer in my Kubernetes deployment, but AWS API Gateway can't reach that loadbalancer!
Thanks in advance with the help!
You can do this by using a Network Load Balancer.
Create an internal network load balancer and have your containers be added to its target group.
Then in API Gateway create a VPCLink to your Network Load Balancer. Then use the VPCLink within your API Gateway setup.
More instructions available here.
You might be able to accomplish this by setting up an API Gateway private integration. This makes it simple to expose your HTTP/HTTPS resources behind an Amazon VPC for access by clients outside of the VPC.
Also, have a look at Amazon EKS cluster endpoint access control in order to understand how you can enable endpoint private access for your cluster.