Istio to higress migration guide

[nbragin4]

Is there any guide on how to properly migrate from Istio to Higress? I'm currently using Istio as my service mesh and would like to explore using Higress as an alternative. What are the key steps and considerations when migrating from Istio to Higress?

Some key features I'm using with Istio that I want to ensure are supported by Higress:

• Multiple Istio ingress gateways in a single cluster (secure gateway, generic gateway, project-specific gateways with custom ports). I only saw that Higress has only one gateway. Can I deploy more than one Higress gateway?

• Istio VirtualServices used everywhere. Will they break after migration to Higress if I convert Istio gateway charts to Higress gateways to preserve infrastructure?

• Envoy Filters are also used in some cases. Are they compatible with Higress?

• I use Kiali for network diagnostics and Victoria Metrics with Grafana for observability. Kiali depends on services in the istio-system namespace. Is there any compatibility layer with custom services that will point to Higress-system pods?

Any guidance on a smooth migration path from Istio to Higress would be greatly appreciated. Key considerations are preserving existing configurations, ensuring no downtime, and maintaining feature parity.