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kubernetes module: seedDockerImages option for seeding docker images built with nix

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Jaka Hudoklin 2017-09-01 12:22:12 +02:00 committed by Robin Gloster
parent 9d97c92d68
commit 2beadcf181
1 changed files with 32 additions and 6 deletions
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38
nixos/modules/services/cluster/kubernetes/default.nix
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@ -505,6 +505,12 @@ in {
type = types.listOf types.str; type = types.listOf types.str;
}; };
seedDockerImages = mkOption {
description = "List of docker images to preload on system";
default = [];
type = types.listOf types.package;
};
registerNode = mkOption { registerNode = mkOption {
description = "Whether to auto register kubelet with API server."; description = "Whether to auto register kubelet with API server.";
default = true; default = true;
@ -774,16 +780,36 @@ in {
config = mkMerge [ config = mkMerge [
(mkIf cfg.kubelet.enable { (mkIf cfg.kubelet.enable {
services.kubernetes.kubelet.seedDockerImages = [infraContainer];
systemd.services.kubelet-bootstrap = {
description = "Boostrap Kubelet";
wantedBy = ["kubernetes.target"];
after = ["docker.service" "network.target"];
path = with pkgs; [ docker ];
script = ''
${concatMapStrings (img: ''
echo "Seeding docker image: ${img}"
docker load <${img}
'') cfg.kubelet.seedDockerImages}
rm /opt/cni/bin/* || true
${concatMapStrings (package: ''
echo "Linking cni package: ${package}"
ln -fs ${package.plugins}/* /opt/cni/bin
'') cfg.kubelet.cni.packages}
'';
serviceConfig = {
Slice = "kubernetes.slice";
Type = "oneshot";
};
};
systemd.services.kubelet = { systemd.services.kubelet = {
description = "Kubernetes Kubelet Service"; description = "Kubernetes Kubelet Service";
wantedBy = [ "kubernetes.target" ]; wantedBy = [ "kubernetes.target" ];
after = [ "network.target" "docker.service" "kube-apiserver.service" ]; after = [ "network.target" "docker.service" "kube-apiserver.service" "kubelet-bootstrap.service" ];
path = with pkgs; [ gitMinimal openssh docker utillinux iproute ethtool thin-provisioning-tools iptables socat ] ++ cfg.path; path = with pkgs; [ gitMinimal openssh docker utillinux iproute ethtool thin-provisioning-tools iptables socat ] ++ cfg.path;
preStart = ''
docker load < ${infraContainer}
rm /opt/cni/bin/* || true
${concatMapStringsSep "\n" (p: "ln -fs ${p.plugins}/* /opt/cni/bin") cfg.kubelet.cni.packages}
'';
serviceConfig = { serviceConfig = {
Slice = "kubernetes.slice"; Slice = "kubernetes.slice";
ExecStart = ''${cfg.package}/bin/kubelet \ ExecStart = ''${cfg.package}/bin/kubelet \