Amazon Elastic Kubernetes Service (Amazon EKS) is a managed Kubernetes as a Service on AWS. IMAO, Google Cloud's GKE is still the best choice for managed Kubernetes service if you're not stuck in AWS.
To avoid the error "No 'Access-Control-Allow-Origin' header is present on the requested resource"
TLS actually uses both Asymmetric Encryption and Symmetric Encryption, so-called a hybrid cryptosystem. Simply speaking, TLS first uses an Asymmetric algorithm to exchange shared secrets between both sides, then generates a Symmetric key (the session key) from the shared secrets, finally uses the session key to encrypt application data (HTTP request/response).
Kubernetes is the de facto standard of container orchestration. Google Kubernetes Engine (GKE) is a managed Kubernetes as a Service provided by Google Cloud Platform.
sysctl is a command-lin tool to modify kernel parameters at runtime in Linux.