From acdd665b08c5b8890541f721c568d0ec2d51ba2e Mon Sep 17 00:00:00 2001
From: Serge Bazanski <q3k@hackerspace.pl>
Date: Mon, 14 Dec 2020 19:10:50 +0100
Subject: [PATCH] cluster: use static addresses

This disables DHCP on all k0 nodes. This change has been tentatively
deployed to bc01n01 (which is cordoned off in kube), and I will deploy
it to the rest of k0 machines once merged.

Change-Id: I96253a9d0acedb4512c877c64174992ffdb43d58
---
 cluster/nix/defs-machines.nix | 10 ++++++++++
 cluster/nix/modules/base.nix  | 11 ++++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/cluster/nix/defs-machines.nix b/cluster/nix/defs-machines.nix
index f68cc65a..4c50f679 100644
--- a/cluster/nix/defs-machines.nix
+++ b/cluster/nix/defs-machines.nix
@@ -4,6 +4,8 @@
     threads = 16;
     fqdn = "${name}.hswaw.net";
     ipAddr = "185.236.240.35";
+    ipAddrBits = 28;
+    gw = "185.236.240.33";
     podNet = "10.10.16.0/24";
     diskBoot = "/dev/disk/by-id/scsi-360024e8078a9060023b1043107388af5";
     fsRoot = "/dev/disk/by-uuid/518ecac1-00ea-4ef0-9418-9eca6ce6d918";
@@ -15,6 +17,8 @@
     threads = 16;
     fqdn = "${name}.hswaw.net";
     ipAddr = "185.236.240.36";
+    ipAddrBits = 28;
+    gw = "185.236.240.33";
     podNet = "10.10.17.0/24";
     diskBoot = "/dev/disk/by-id/scsi-360024e8078b0250023b10f8706d3c99e";
     fsRoot = "/dev/disk/by-uuid/2d45c87b-029b-463e-a7cb-afd5a3089327";
@@ -26,6 +30,8 @@
     threads = 16;
     fqdn = "${name}.hswaw.net";
     ipAddr = "185.236.240.37";
+    ipAddrBits = 28;
+    gw = "185.236.240.33";
     podNet = "10.10.18.0/24";
     diskBoot = "/dev/disk/by-id/scsi-360024e8078a8fa0023b1787e0605a3e0";
     fsRoot = "/dev/disk/by-uuid/afc05836-c9b3-4d7e-b0a2-3ebfe2336d4f";
@@ -37,6 +43,8 @@
     threads = 48;
     fqdn = "${name}.hswaw.net";
     ipAddr = "185.236.240.39";
+    ipAddrBits = 28;
+    gw = "185.236.240.33";
     podNet = "10.10.19.0/24";
     diskBoot = "/dev/disk/by-id/ata-Samsung_SSD_860_EVO_250GB_S3YJNX1M604518E";
     fsRoot = "/dev/disk/by-uuid/b4149083-49fe-4951-a143-aff4cedaf33a";
@@ -48,6 +56,8 @@
     threads = 48;
     fqdn = "${name}.hswaw.net";
     ipAddr = "185.236.240.40";
+    ipAddrBits = 28;
+    gw = "185.236.240.33";
     podNet = "10.10.20.0/24";
     diskBoot = "/dev/disk/by-id/ata-Samsung_SSD_860_EVO_250GB_S3YJNF0M717009H";
     fsRoot = "/dev/disk/by-uuid/fc5c6456-5bbd-4b9e-a93e-7f9073ffe09a";
diff --git a/cluster/nix/modules/base.nix b/cluster/nix/modules/base.nix
index 84530c3a..034d1cd3 100644
--- a/cluster/nix/modules/base.nix
+++ b/cluster/nix/modules/base.nix
@@ -34,7 +34,16 @@ rec {
   programs.mtr.enable = true;
 
   networking.useDHCP = false;
-  networking.interfaces."${machine.mgmtIf}".useDHCP = true;
+  networking.interfaces."${machine.mgmtIf}" = {
+    ipv4.addresses = [
+      {
+        address = machine.ipAddr;
+        prefixLength = machine.ipAddrBits;
+      }
+    ];
+  };
+  networking.defaultGateway = machine.gw;
+  networking.nameservers = ["185.236.240.1"];
 
   # Instead of using nixpkgs from the root/nixos channel, use pkgs pin from this file.
   nix.nixPath = [ "nixpkgs=${pkgs.path}" "nixos-config=/etc/nixos/configuration.nix" ];