helm-diff VS istio

#!/usr/bin/env bash set -euo pipefail cd "$(dirname "$0")/.." source scripts/common.sh green "Installing Kubectl" install_kubectl green "Installing helm version => ${HELM_VERSION}" install_helm green "Setting up Kong Helm Repo" helm repo add kong https://charts.konghq.com helm repo update green "Installing Helm Diff Plugin" helm plugin install https://github.com/databus23/helm-diff || true green "Setting up AWS Auth" setup_aws_auth green "Set the current namespace" kubectl config set-context --current --namespace=${KONG_NAME}-kong green "Validating VPA Config => ${KONG_NAME}-kong-vpa" kubectl diff -f ${KONG_NAME}/vpa.yaml || true if [[ "${KONG_NAME}" == prd ]]; then green "Validating Ingress => ${KONG_NAME}-kong-ingress" kubectl diff -f ${KONG_NAME}/ingress.yaml || true fi green "Validating Kong => ${KONG_NAME}" helm diff upgrade \ --install \ "${KONG_NAME}" \ kong/kong \ --namespace "${NAMESPACE}" \ -f ${KONG_NAME}/kong.yaml \ --set-file dblessConfig.config=${KONG_NAME}/declarative.yaml \ --version 2.6.3

helm plugin install https://github.com/databus23/helm-diff helm plugin install https://github.com/aslafy-z/helm-git helm plugin install https://github.com/jkroepke/helm-secrets

helm-diff plugin to see differences about what will be deployed.

There's Helm plugin (https://github.com/databus23/helm-diff) that show diff results for you, for example

    helm diff upgrade   --namespace 

So helm secrets is a helm plugin, not quite native. It requires the helm diff plugin as well.

Istio is a popular open-source service mesh framework that provides a comprehensive solution for managing, securing, and observing microservices-based applications running on Kubernetes.

Leverage a service mesh like Istio or Linkerd to manage communication between microservices within the Kubernetes cluster. These service meshes can be configured to intercept JMX traffic and enforce access control policies. Benefits:

Open Source and Cloud Computing: A Match Made in Heaven The cloud is accelerating OSS adoption. Cloud-native technologies like Kubernetes [https://kubernetes.io/] and Istio [https://istio.io/], both open-source projects, are revolutionizing how applications are built and deployed across cloud platforms.

Consider the case of Bookinfo, a sample application provided by Istio, rewritten using CloudWeGo's Kitex for superior performance and extensibility.

It is a dedicated infrastructure layer that manages service-to-service communication, providing features like load balancing, encryption, authentication, and monitoring. Istio deploys sidecar proxies alongside each microservice instance. These proxies handle communication, providing features like load balancing, service discovery, encryption, monitoring and authentication.

5Y old post that sounds like they've done similar here: Caddy Issue Istio Issue but doesn't cover much of the implementation

In a production environment there will be a load balancer setup with an Ingress Controller, Service Mesh or some type of Custom Router. This allows all traffic to be sent to the single load balancer IP address and then route the traffic to a service based on the Domain name or subpath. We are using a NGINX ingress controller but service meshes like Istio have been becoming the most popular solution to use as they offer more segmentation, security and granular control.

Flagger is a progressive delivery tool that enables a Kubernetes operator to automate the promotion or rollback of deployments based on metrics analysis. It supports a variety of metrics including Prometheus, Datadog, and New Relic to name a few. It also works well with Istio service mesh, and can implement progressive traffic splitting between primary and canary releases.

End-to-end data encryption with a service mesh: Using an end-to-end data encryption mechanism with a service mesh like Istio, TLS can secure communication between different microservices within a Kubernetes cluster. This is a popular approach for modern, distributed microservice architectures.