DevOps: What is Service Mesh?

1# Istio VirtualService
2apiVersion: networking.istio.io/v1beta1
3kind: VirtualService
4metadata:
5  name: myapp
6spec:
7  hosts:
8    - myapp
9  http:
10    - route:
11        - destination:
12            host: myapp
13            subset: v1
14          weight: 90
15        - destination:
16            host: myapp
17            subset: v2
18          weight: 10
19      timeout: 10s
20      retries:
21        attempts: 3
22        perTryTimeout: 2s

1# Istio DestinationRule
2apiVersion: networking.istio.io/v1beta1
3kind: DestinationRule
4metadata:
5  name: myapp
6spec:
7  host: myapp
8  subsets:
9    - name: v1
10      labels:
11        version: v1
12    - name: v2
13      labels:
14        version: v2
15  trafficPolicy:
16    connectionPool:
17      tcp:
18        maxConnections: 100
19      http:
20        h2UpgradePolicy: DEFAULT