Setting Up IAP for GKE: A Guide to Allowing Unauthenticated Connections from Other Services скачать в хорошем качестве

Setting Up IAP for GKE: A Guide to Allowing Unauthenticated Connections from Other Services

Learn how to set up `IAP` for Google Kubernetes Engine (GKE) while enabling connections from other services that do not require authentication. --- This video is based on the question https://stackoverflow.com/q/73043039/ asked by the user 'bugZ' ( https://stackoverflow.com/u/5681397/ ) and on the answer https://stackoverflow.com/a/73051126/ provided by the user 'boredabdel' ( https://stackoverflow.com/u/16231068/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Set up IAP for GKE and allow other service to connect without IAP Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Setting Up IAP for GKE: A Guide to Allowing Unauthenticated Connections from Other Services In the world of cloud computing and services, security is paramount. Google Cloud Platform (GCP) offers a feature called Identity-Aware Proxy (IAP), which adds an essential layer of security to your applications. However, it can complicate communication between services that need to connect to each other without going through IAP. The Problem Let's break down the scenario you've described: Service 1: A Kubernetes Cluster running on GKE, which is secured by IAP. Service 2: A service hosted on a separate virtual machine (VM) with its own Global Load Balancer. The challenge arises because you want to protect Service 1 with IAP, but Service 2 needs to interact with it. Service 2 cannot connect to Service 1 if it is behind IAP, resulting in connectivity issues that disrupt your operations. TL;DR: You're looking for a solution to allow Service 2 to communicate with Service 1 without going through IAP while still keeping Service 1 secure. Understanding IAP and its Limitations When IAP is implemented: All calls to your services must be authenticated. This applies universally, regardless of whether requests come from outside the virtual private cloud (VPC) or from internal sources. This means that when you try to connect from Service 2 to Service 1, you will encounter authentication barriers that block the connection. Unfortunately, bypassing IAP for a specific service call is not an available option, as the security model ensures that all incoming requests are verified. The Solution: Deploying Internal Load Balancers While the restrictions of IAP can be limiting, there's a straightforward solution you can implement: Step 1: Deploy Internal Load Balancers Set Up Internal Load Balancers for Service 1: Create an Internal Load Balancer that fronts Service 1. This will handle traffic destined specifically for your internal network. Configure DNS Entries: Use Cloud DNS or similar tools to resolve the internal IP address of this Load Balancer from Service 2. This way, Service 2 can communicate with Service 1 without the IAP overhead. Step 2: Benefits of Using Internal Load Balancers Cost Efficiency: If Service 2 connects to Service 1 via the External Load Balancer (with IAP), you will incur egress traffic charges as the traffic is treated as going to the internet. By using Internal Load Balancers: You only pay for zonal traffic, and if both services are in the same zone, you may incur little to no cost. Lower Latency: Internal networking generally offers lower latency than external connections, which means faster communication between your services. Conclusion Setting up IAP adds a robust layer of security to your GKE applications. However, when working with multiple services that need to communicate, such as Service 1 and Service 2 in your case, leveraging Internal Load Balancers is the key to maintaining both security and connectivity. By implementing the steps outlined above, you’ll ensure seamless integration between your services while still protecting your GKE setup with IAP. Feel free to reach out if you have more queries on setting up GCP services efficiently!