envoyproxy/envoy

Enable dynamic configuration for "xds-grpc" cluster

Open

#10.059 geöffnet am 14. Feb. 2020

Auf GitHub ansehen
 (9 Kommentare) (0 Reaktionen) (0 zugewiesene Personen)C++ (5.373 Forks)batch import
area/xdsdesign proposalhelp wanted

Repository-Metriken

Stars
 (27.997 Stars)
PR-Merge-Metriken
 (Durchschn. Merge 8T) (378 gemergte PRs in 30 T)

Beschreibung

Description: In Envoy with Istio scenario, the back end xDS server Pilot is configured through "envoy_bootstrap_v2.json" like this:

{
        "name": "xds-grpc",
        "type": "STATIC",
        "dns_lookup_family": "V4_ONLY",
        "connect_timeout": "{{ .connect_timeout }}",
        "lb_policy": "RANDOM",
        ...
        "hosts": {{ .pilot_grpc_address_group }},
        ...
}

However, this is a static address and can't not be changed any longer. If we want to migrate the Pilot address to another, the Envoy has to reboot to reload the new Pilot address. I'm wandering if there is any way to dynamically change this address. Maybe by enabling configure file watching and reloading is a good practice.

Contributor Guide