'How to call the services within a mesh in ISTIO?

I am using service mesh https://istio.io/ installed on top of kubernetes and have installed the example https://istio.io/docs/examples/bookinfo/, that ISTIO provides on their website.

Assume, I've created a service FOO and would like to call the service ratings through the virtual service ratings.

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  • How to call ratings within FOO? Which address do I have to provide the http client in the FOO service to call ratings. Do Ihave to create a virtual service for ratings? ratings should not be accessible outside of kubernetes cluser.

  • When FOO calls ratings, will the request go first through the own envoy proxy or it goes directly to ratings envoy proxy?

Follow-up question

Here are all virtual services installed on the kubernetes cluster:

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The cluster IP address is:

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The question is, how can I call the ratings service in FOO service? With the Cluster IP address?

kubernetesistio


Solution 1:[1]

use "mesh" keyword in the list of gateways of a virtual service, inter service communication will also use these rules by the side cars and essentially leverage all additional rules configured for a particular service(like, retries)

Solution 2:[2]

I would suggest using Kubernetes DNS that is attached to a Kubernetes service that has the selectors for BOO service so that your traffic is redirected to BOO pods.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 shasi
Solution 2

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