March 2020
Intermediate to advanced
626 pages
14h 45m
English
Content preview from Mastering Service Mesh
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Allowing access to external services
Instead of blanket denial to an external service, it is possible to allow access to certain external services using Istio's ServiceEntry configuration. To control access to the external services, we need to set mode: REGISTRY_ONLY, which we did in the previous section. Let's take a look:
- The following is the ServiceEntry definition to allow http access to httpbin.org:
# Script : 15-http-service-entry-for-httpbin.yamlapiVersion: networking.istio.io/v1alpha3kind: ServiceEntrymetadata: name: httpbinspec: hosts: - httpbin.org ports: - number: 80 name: http protocol: HTTP resolution: DNS location: MESH_EXTERNAL
- Create http ServiceEntry to allow access to http://httpbin.org:
$ kubectl -n istio-lab apply ...
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