Install NixOS on Oracle Cloud - Revision history

FliegendeWurst: /* Networking */ firewall / security list note

2025-04-12T17:55:56Z

Networking: firewall / security list note

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	The VCN's subnet for your instance must have an IPv6 prefix assigned.		The VCN's subnet for your instance must have an IPv6 prefix assigned.
	[[File:Oc-vcn-subnet-ipv6-prefixes.png\|center]]		[[File:Oc-vcn-subnet-ipv6-prefixes.png\|center]]

			Make sure your security list has equivalent rules for IPv4 and IPv6 if you want your services to be reachable via both versions.

	==== NixOS configuration.nix ====		==== NixOS configuration.nix ====

FliegendeWurst: add link to discourse

2025-04-06T22:03:20Z

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← Older revision		Revision as of 22:03, 6 April 2025
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	Create the instance with Oracle Linux 9 as base image. Then follow the steps in [[Install NixOS on a Server With a Different Filesystem]].		Create the instance with Oracle Linux 9 as base image. Then follow the steps in [[Install NixOS on a Server With a Different Filesystem]].

			There are other methods that may also work, see [https://discourse.nixos.org/t/nixos-on-free-oracle-cloud-arm-a1/17474 this Discourse thread].

	== Configuration ==		== Configuration ==

FliegendeWurst: categorize

2025-04-06T21:59:07Z

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	};		};
	</syntaxhighlight>		</syntaxhighlight>

			[[Category:Guide]]
			[[Category:Deployment]]

FliegendeWurst: Guide for Oracle Cloud instances

2025-04-06T21:58:11Z

Guide for Oracle Cloud instances

New page

This guide describes how to install NixOS on [https://cloud.oracle.com/ Oracle Cloud], including IPv6 configuration.

== Installation ==

Create the instance with Oracle Linux 9 as base image. Then follow the steps in [[Install NixOS on a Server With a Different Filesystem]].

== Configuration ==

=== Bootloader ===

systemd-boot works well. <code>net.ifnames=0</code> is optional, but recommended for more predictable interface names.

<syntaxhighlight lang="nix">
boot.loader.systemd-boot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
boot.kernelParams = [ "net.ifnames=0" ];
</syntaxhighlight>

=== Networking ===

==== Oracle Cloud web interface ====

IPv4 setup is handled by the configuration wizard.

To set up IPv6, your Virtual Cloud Network (VCN) must have an IPv6 prefix assigned.

[[File:Oc-vcn-cidr.png|center]]

The VCN's Route Table(s) must have an entry for IPv6 traffic.

[[File:Oc-vcn-route-table.png|center]]

The VCN's subnet for your instance must have an IPv6 prefix assigned.
[[File:Oc-vcn-subnet-ipv6-prefixes.png|center]]

==== NixOS configuration.nix ====

<syntaxhighlight lang="nix">
networking = {
hostName = "(your hostname here)";
defaultGateway = "10.0.0.1";
# Use Quad9's DNS (or replace by your preferred DNS provider)
nameservers = [
"9.9.9.9"
"149.112.112.112"
"2620:fe::fe"
"2620:fe::9"
];
interfaces.eth0 = {
ipv4.addresses = [
{
# Use IP address configured in the Oracle Cloud web interface
address = "10.0.0.90";
prefixLength = 24;
}
];
# Only "required" for IPv6, can be false if only IPv4 is needed
useDHCP = true;
};
# Note: you also need to configure open ports in the Oracle Cloud web interface
# (Virtual Cloud Network -> Security Lists -> Ingress Rules)
firewall = {
# (both optional)
logRefusedConnections = false;
rejectPackets = true;
};
};
</syntaxhighlight>