Kubernetes/Istio
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Architecture
. | app1 | | app2 | | proxy | <----------> | proxy | # Envoy proxy sidecars | | pod | | pod | | pod | | | |citadel| |mixer| |pilot| | | C o n t r o l P l a n e A P I | ----------------------------------------
Envoy L7 proxy | Pilot | Citadel | Mixer | Galley |
---|---|---|---|---|
|
Aware about pods health, what pods are available and sends to the proxy pods that are alive with any other configuration updates. |
Pods
It's certificate store. |
It has a lot of modules/plugins. Pods: istio-policy-* istio-telemetry-* |
Interface for underlying Istio API gateway(aka server) |
Istio on minikube
# Minimum requirements are 8G and 4 CPUs PROFILE=minikube-v1.17.6-istio minikube start --memory=8192 --cpus=4 --kubernetes-version=v1.17.6 --profile $PROFILE minikube start --memory=8192 --cpus=4 --kubernetes-version=v1.17.6 --driver kvm --profile $PROFILE-kvm2 minikube tunnel --profile $PROFILE minikube addons enable istio --profile $PROFILE # [1] error
Troubleshooting
- [1] - no matches for kind "IstioOperator"
💣 enable failed: run callbacks: running callbacks: [sudo KUBECONFIG=/var/lib/minikube/kubeconfig /var/lib/minikube/binaries/v1.17.6/kubectl apply -f /etc/kubernetes/addons/istio-default-profile.yaml: Process exited with status 1 stdout: namespace/istio-system unchanged stderr: error: unable to recognize "/etc/kubernetes/addons/istio-default-profile.yaml": no matches for kind "IstioOperator" in version "install.istio.io/v1alpha1"