kubernetes-deployments/kubenix.nix

88 lines
2.9 KiB
Nix

inputs@{ self, servers, flutils, nixpkgs, kubenix, ... }: flutils.lib.eachDefaultSystem
(system:
let
pkgs = nixpkgs.legacyPackages.${system};
lib = pkgs.lib;
deployScript = (pkgs.writeScriptBin "applyset-deploy.sh" (builtins.readFile ./applyset-deploy.sh)).overrideAttrs (old: {
buildCommand = "${old.buildCommand}\npatchShebangs $out";
});
machines = servers.machines.${system};
mkKubernetes = name: module: namespace: (kubenix.evalModules.${system} {
specialArgs = {
inherit namespace system machines self;
inherit (inputs) nixhelm blog-pim dns nixpkgs nixng;
inherit (self) globals;
utils = import ./utils.nix {
inherit pkgs;
inherit (inputs) nixpkgs nixng;
inherit (self) globals;
};
};
module = { kubenix, ... }:
{
imports = [
kubenix.modules.k8s
kubenix.modules.helm
./modules
module
];
config = {
kubenix.project = name;
kubernetes.namespace = namespace;
};
};
}).config.kubernetes;
mkManifest = name: { module, namespace }: {
name = "${name}-manifest";
value = (mkKubernetes name module namespace).result;
};
mkDeployApp = name: { module, namespace }:
let
kubernetes = mkKubernetes name module namespace;
kubeconfig = kubernetes.kubeconfig or "";
result = kubernetes.result or "";
wrappedDeployScript = pkgs.symlinkJoin
{
name = "applyset-deploy.sh";
paths = [ deployScript pkgs.vals pkgs.kubectl ];
buildInputs = [ pkgs.makeWrapper ];
passthru.manifest = result;
meta.mainProgram = "applyset-deploy.sh";
postBuild =
let
# HACK: create normal way of checking if server runs k8s
k8sMachines = lib.filterAttrs (n: m: m.kubernetesNodeLabels != null) machines;
k8sServerNames = builtins.concatStringsSep " " (builtins.attrNames k8sMachines);
in
/* bash */ ''
wrapProgram $out/bin/applyset-deploy.sh \
--suffix PATH : "$out/bin" \
--run 'export KUBECONFIG=''${KUBECONFIG:-${toString kubeconfig}}' \
--set MANIFEST '${result}' \
--set NAME '${name}' \
--set NAMESPACE '${namespace}' \
--set SERVERS '${k8sServerNames}' \
--set DYFF '${lib.getExe pkgs.dyff}' \
--set GCROOTDIR '/nix/var/nix/gcroots/kubernetes-manifests'
'';
};
in
{
name = "${name}-deploy";
value = wrappedDeployScript;
};
deployments = import ./deployments.nix;
in
{
packages = pkgs.lib.mergeAttrs (pkgs.lib.mapAttrs' mkDeployApp deployments) (pkgs.lib.mapAttrs' mkManifest deployments);
})