{"id":10950,"date":"2022-06-14T18:24:14","date_gmt":"2022-06-14T12:54:14","guid":{"rendered":"https:\/\/opstree.com\/blog\/\/?p=10950"},"modified":"2022-06-14T18:24:14","modified_gmt":"2022-06-14T12:54:14","slug":"aws-gateway-loadbalancer-a-load-balancer-that-we-deserve","status":"publish","type":"post","link":"https:\/\/opstree.com\/blog\/2022\/06\/14\/aws-gateway-loadbalancer-a-load-balancer-that-we-deserve\/","title":{"rendered":"AWS Gateway LoadBalancer: A Load Balancer that we deserve"},"content":{"rendered":"\n

Nowadays, LoadBalancing is one of the basic needs for the application systems to perform optimally while considering some important factors like- scalability and high availability. Every cloud is providing LBaaS<\/strong> (LoadBalancing as a Service) as an offering so the consumers don’t have to worry about the setup and management of load-balancers by themselves. <\/p>\n\n\n\n

But it’s not like that cloud is offering a single type of load balancer for every use case because for different use-case we require a different type of load balancer. For example- we have different load-balancers for Layer4 and Layer7 level traffic.<\/p>\n\n\n\n

Recently AWS had a new family member in their load-balancer family and they named it “Gateway Load Balancer<\/strong>“. So gateway load-balancer is a load-balancing service provided by AWS to send traffic to the different appliances, applications, firewalls, etc. that are not part of the current VPC.<\/p>\n\n\n\n\n\n\n\n

Gateway Load Balancer<\/h2>\n\n\n\n

I guess you are still confused with the use case of the gateway load balancer. Let me try to explain it with the use-case which we encountered. Since I am working in a DevOps consulting company, so every day I get to interact with different client and their use-cases. So I was having a discussion with a client who is in the security domain and they were explaining to me their use case. They have purchased a commercial firewall and set it up in shared VPC and wanted their other VPC applications (Dev, Pod) to use the firewall as a gateway for sending the traffic outside the world. <\/p>\n\n\n\n

We gave a thought to this approach for a while and observed that this is a very genuine use case for security-specific domain-based companies. Then we started to evaluate the solution for this use-case and got introduced to the silver bullet of these kinds of use-cases “Gateway Load Balancer”. Here is the architecture diagram they wanted to achieve.<\/p>\n\n\n\n

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Architecture diagram<\/figcaption><\/figure>\n\n\n\n

Flow:-<\/strong><\/p>\n\n\n\n