[feature request] Extra hosts in the /etc/hosts

[Oloremo]

Hi,

Nomad recently fixed\implement long-standing issue with bridge network Docker workloads not being able to add extra entries into the /etc/hosts.

hashicorp/nomad#10766

I wonder if containerd driver could support this?

Some applications are dependant on some /etc/hosts entries in our case and we have to do a lot of hacks to workaround it.

[shishir-a412ed]

@Oloremo You can add extra hosts to /etc/hosts in the container using extra_hosts flag. What is missing in containerd-driver?

[Oloremo]

Ops, I think I assumed it didn't work for all bridged network workloads. Lemme re-check.

[shishir-a412ed]

Sure. The important thing here is if you set host_network to true, you get a copy of host's /etc/hosts and extra_hosts get added to that. However, if host_network is false, you start with a default /etc/hosts build for the container and extra_hosts are added to the default version.

Code link here