Explaining the EKS version upgrade in the codebase from node drain to application!
This article introduces the procedure for upgrading EKS using Terraform. EKS stands for "Amazon Elastic Kubernetes Service," which is a managed service that allows you to use Kubernetes on AWS. The overall flow of the upgrade consists of three steps: draining the nodes, modifying the tfvars file, and applying the tfvars file. During the node draining process, the nodes on EKS are stopped, and the Pods are evicted and terminated. If the Pods are not evicted and terminated before the upgrade, it may lead to a PodEvictionFailure, causing the upgrade to fail. The upgrade is achieved by changing the value of kubernetes_version in the tfvars file to the next higher version and applying it. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.*
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CNS Corporation is a company engaged in system engineering services. A high-level group of engineers provides services in areas such as big data, cloud, AI, finance, retail, infrastructure development, and system development. In addition to engineering services, we offer consulting focused on realizing our clients' management strategies and business transformations, as well as services centered on business operations and system operations, creating new value that advances society.
