[object Object]

Service Meshes Available

istio

Traffic management

Service routes and version subsets should be in place given the destination rules applied in Lab 3. If they are not present, re-apply the destination rules:
1apiVersion: networking.istio.io/v1alpha3
2kind: DestinationRule
3metadata:
4 name: productpage
5spec:
6 host: productpage
7 subsets:
8 - name: v1
9 labels:
10 version: v1
11---
12
13apiVersion: networking.istio.io/v1alpha3
14kind: DestinationRule
15metadata:
16name: reviews
17spec:
18host: reviews
19subsets: - name: v1
20labels:
21version: v1 - name: v2
22labels:
23version: v2 - name: v3
24labels:
25version: v3
26
27---
28
29apiVersion: networking.istio.io/v1alpha3
30kind: DestinationRule
31metadata:
32name: ratings
33spec:
34host: ratings
35subsets: - name: v1
36labels:
37version: v1 - name: v2
38labels:
39version: v2 - name: v2-mysql
40labels:
41version: v2-mysql - name: v2-mysql-vm
42labels:
43version: v2-mysql-vm
44
45---
46
47apiVersion: networking.istio.io/v1alpha3
48kind: DestinationRule
49metadata:
50name: details
51spec:
52host: details
53subsets: - name: v1
54labels:
55version: v1 - name: v2
56labels:
57version: v2
58
59---

Start managing traffic routes

Some basics to get us started.

Send all requests to Productpage v1

1apiVersion: networking.istio.io/v1alpha3
2kind: VirtualService
3metadata:
4 name: reviews
5spec:
6 hosts:
7 - reviews
8 http:
9 - route:
10 - destination:
11 host: reviews
12 subset: v1

Using Meshery, apply custom configuration.

Refresh BookInfo productpage

Send all requests to Productpage v2

1apiVersion: networking.istio.io/v1alpha3
2kind: VirtualService
3metadata:
4 name: reviews
5spec:
6 hosts:
7 - reviews
8 http:
9 - route:
10 - destination:
11 host: reviews
12 subset: v2

Using Meshery, apply custom configuration.

Refresh BookInfo productpage.

Traffic routing based on user or user-agent type


Redirect requests from mobile devices

1apiVersion: networking.istio.io/v1alpha3
2kind: VirtualService
3metadata:
4 name: bookinfo
5spec:
6 hosts:
7 - "bookinfo.meshery.io"
8 gateways:
9 - sample-app-gateway
10 http:
11 - match:
12 - headers:
13 User-Agent:
14 regex: ^.*Mobile.*$
15 route:
16 - headers:
17 request:
18 set:
19 x-response: "Success with Mobile"
20 destination:
21 host: productpage
22 port:
23 number: 9080
24 - route:
25 - destination:
26 host: product
27 subset: random

Set your browser to mimic a mobile device. Enable Developer tools, if need. Refresh BookInfo productpage.

Redirect requests based on HTTP header information

Example of using user information from HTTP headers to redirect requests.

1apiVersion: networking.istio.io/v1alpha3
2kind: VirtualService
3metadata:
4 name: reviews
5spec:
6 hosts:
7 - reviews
8 http:
9 - match:
10 - headers:
11 end-user:
12 exact: naruto
13 route:
14 - destination:
15 host: reviews
16 subset: v2
17 - match:
18 - headers:
19 end-user:
20 exact: sasuke
21 route:
22 - destination:
23 host: reviews
24 subset: v3
25 - route:
26 - destination:
27 host: reviews
28 subset: v1

Traffic Mirroring with Istio

You will need to generate load on BookInfo's productpage service. See Lab 4 for instructions for running a performance test.

1apiVersion: networking.istio.io/v1alpha3
2kind: VirtualService
3metadata:
4 name: reviews
5spec:
6 hosts:
7 - reviews
8 http:
9 - route:
10 - destination:
11 host: reviews
12 subset: v1
13 weight: 100
14 mirror:
15 host: reviews
16 subset: v2
17 mirror_percent: 100

Incrementally increase the traffic split percentage to the higher version service #. Start at 20% traffic split

1apiVersion: networking.istio.io/v1alpha3
2kind: VirtualService
3metadata:
4 name: reviews
5spec:
6 hosts:
7 - reviews
8 http:
9 - route:
10 - destination:
11 host: reviews
12 subset: v1
13 weight: 80
14 - destination:
15 host: reviews
16 subset: v3
17 weight: 20

Move to 50%. Observe in Meshery.

1apiVersion: networking.istio.io/v1alpha3
2kind: VirtualService
3metadata:
4 name: reviews
5spec:
6 hosts:
7 - reviews
8 http:
9 - route:
10 - destination:
11 host: reviews
12 subset: v1
13 weight: 50
14 - destination:
15 host: reviews
16 subset: v3
17 weight: 50

Injecting Latency

Acknowledging the fallacy that the network is always reliable, you will intentionally cause a little chaos.

Exploring timeouts with Reviews service

Note Istio Proxy's default timeout settings.

1---
2apiVersion: networking.istio.io/v1alpha3
3kind: VirtualService
4metadata:
5 name: reviews
6spec:
7 hosts:
8 - reviews
9 http:
10 - match:
11 - headers:
12 end-user:
13 exact: naruto
14 fault:
15 delay:
16 percentage:
17 value: 100.0
18 fixedDelay: 11s
19 route:
20 - destination:
21 host: reviews
22 subset: v1
23 - route:
24 - destination:
25 host: reviews
26 subset: v2

Exploring timeouts with Ratings service

1---
2apiVersion: networking.istio.io/v1alpha3
3kind: VirtualService
4metadata:
5 name: ratings
6spec:
7 hosts:
8 - ratings
9 http:
10 - match:
11 - headers:
12 end-user:
13 exact: naruto
14 fault:
15 delay:
16 percentage:
17 value: 100.0
18 fixedDelay: 5s
19 route:
20 - destination:
21 host: ratings
22 subset: v1
23 - route:
24 - destination:
25 host: ratings
26 subset: v1

Retries

Overcoming the latency issue.

Set 5 retry attempts and a 3 second timeout

1apiVersion: networking.istio.io/v1alpha3
2kind: VirtualService
3metadata:
4 name: reviews
5spec:
6 hosts:
7 - reviews
8 http:
9 - route:
10 - destination:
11 host: reviews
12 subset: v1
13 retries:
14 attempts: 5
15 perTryTimeout: 3s

Alternative: Manual installation

Follow these steps if the above steps did not work

Traffic management with Istio

If you haven't forked or cloned this repository, please do so now:

1git clone https://github.com/layer5io/advanced-istio-service-mesh-workshop

Route all traffic to version V1

1kubectl apply -f route-v1-v2/v1.yaml

Route all traffic to version V2

1kubectl apply -f route-v1-v2/v2.yaml

Traffic routing based on user or user-agent type

Redirect requests from mobile devices

1kubectl apply -f route-header/device.yaml

Redirect requests based on Cookie data

1kubectl apply -f route-header/user.yaml

NEXT CHAPTER

Getting Started

Layer5, the cloud native management company

An empowerer of engineers, Layer5 helps you extract more value from your infrastructure. Creator and maintainer of service mesh standards. Maker of Meshery, the cloud native management plane.