June 16, 2022 1 min read

Open Service Mesh: Azure's SMI-Compatible Mesh

Open Service Mesh (OSM) is a lightweight, SMI-compatible service mesh with first-class Azure support through AKS integration.

Enabling OSM on AKS

# Enable OSM add-on
az aks enable-addons \
    --addons open-service-mesh \
    --resource-group myResourceGroup \
    --name myAKSCluster

# Verify installation
kubectl get pods -n kube-system -l app=osm-controller

Namespace Enrollment

# Enroll namespace
osm namespace add bookstore

# Or use label
kubectl label namespace bookstore openservicemesh.io/monitored-by=osm

Traffic Policies

apiVersion: specs.smi-spec.io/v1alpha4
kind: HTTPRouteGroup
metadata:
  name: bookstore-routes
spec:
  matches:
  - name: books
    pathRegex: /books
    methods: ["GET"]
---
apiVersion: access.smi-spec.io/v1alpha3
kind: TrafficTarget
metadata:
  name: bookstore
spec:
  destination:
    kind: ServiceAccount
    name: bookstore
  rules:
  - kind: HTTPRouteGroup
    name: bookstore-routes
    matches:
    - books
  sources:
  - kind: ServiceAccount
    name: bookbuyer

Summary

OSM provides Azure-native service mesh capabilities with SMI standard compliance, simplifying mesh adoption on AKS.

References: