lectures.alex.balgavy.eu

Lecture notes from university.
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      1 +++
      2 title = 'Istio'
      3 +++
      4 
      5 # Istio
      6 Istio is a service mesh.
      7 Provides:
      8 - ingress gateway to config access to services of Cluster without configuring ROutes
      9 - virtual services to create routing rules, which you could use for e.g. configuring A/B testing
     10 - security: cert management, authentication policy, authorization policy
     11 - observability: metrics, distributed traces, access logs
     12 
     13 Istio architecture:
     14 
     15 ![Istio architecture diagram](architecture.png)
     16 
     17 Can enable in microk8s with `microk8s enable istio`.
     18 Needs a LoadBalancer, so install metallb.
     19 
     20 Istio provides a CLI: `istioctl`.
     21 
     22 Prometheus is used to collect metrics.