Egress tutorial

[strekm]

Description

Create tutorial explaining how to route outgoing traffic through Istio Egress component. Tutorial should match style of other tutorials. Tutorial should describe basic scenario on how traffic from a workload to external service can be routed through Istio Egress Gateway. Outgoing traffic should be limited to Egress only. https://httpbin.org/ should act as external service. Tutorial should roughly follow scenario:

• enable egress
• create test istio injected namespace
• deploy test application
• deploy NetworkPolicy to limit egress traffic from test namespace to kube-system and to istio-system
• test that external service a is not reachable
• create corresponding Istio resources to allow routing to external service a only through egress (Gateway, DestinationRule, VirtualService)
• test that external service a is reachable

PRs

• ...

ACs [PO]

• ...

DoD [Developer & Reviewer]

• Provide documentation.

Attachments
https://istio.io/latest/docs/tasks/traffic-management/egress/egress-gateway/
part of #419