NixOS:nixos-rebuild build-vm: Difference between revisions
imported>Ibizaman Add some info about build-vm-with-bootloader |
how to expose a qemu VM port to the host |
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When running a virtual machine a file called <code>$hostname.qcow2</code> is created in your current working directory. After changing your <code>/etc/nixos/configuration.nix</code> delete this file, rebuild and then start the new virtual machine. Now you should be able to login. | When running a virtual machine a file called <code>$hostname.qcow2</code> is created in your current working directory. After changing your <code>/etc/nixos/configuration.nix</code> delete this file, rebuild and then start the new virtual machine. Now you should be able to login. | ||
== Networking == | |||
=== qemu === | |||
To enable connecting from your host to your virtual machine, you'll need to forcefully override the default networking settings to apply those from https://wiki.qemu.org/Documentation/Networking#How_to_get_SSH_access_to_a_guest instead. For example, to expose the VM's port 80 on the (unprivileged) port 8009 of the 'localhost' of the host: | |||
<syntaxhighlight lang="nix"> | |||
{ config, pkgs, lib, modulesPath, ... }: | |||
{ | |||
imports = [ | |||
(modulesPath + "/virtualisation/qemu-vm.nix") | |||
]; | |||
virtualisation.qemu.networkingOptions = lib.mkForce [ | |||
"-device e1000,netdev=net0" | |||
"-netdev user,id=net0,hostfwd=tcp:127.0.0.1:8009-:80,\${QEMU_NET_OPTS:+,$QEMU_NET_OPTS}" | |||
]; | |||
networking.firewall.allowedTCPPorts = [ | |||
80 | |||
]; | |||
} | |||
</syntaxhighlight> | |||
== Alternatives == | == Alternatives == | ||