IPv6 Support

[Steve]

Hi

Does anyone know if the following components already support IPv6?:

1. prometheus-alertmanager

2. prometheus-node-exporter

3. prometheus-server

4. grafana

If so, any configuration needed to activate IPv6?

Is it possible to deactivate IPv4?

Thanks!

-Steve

[Ben Kochie]

All Prometheus components work with IPv6. They will use it if available, following standard OS settings.

It's not possible to turn off IPv4 specifically, Prometheus just follows your OS settings.

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[Brian Candler]

All works over IPv6 for me.

With blackbox_exporter, if you give DNS names for targets, you have the option whether to prefer v4 over v6, or only use v4 or only use v6, when probing an endpoint.

Is it possible to deactivate IPv4?

You can bind the listener so it only accepts connections on IPv6.  To do that, you have to bind to a specific IPv6 address: e.g.

node_exporter --web.listen-address='[2001:db8::1]:9100' 

Binding to [::] accepts both v4 and v6 - although I have a vague idea there's some global kernel knob (bindv6only?) to turn off dual-protocol sockets.