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nixos/services.flannel: remove with lib;

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Felix Buehler 2024-08-28 21:19:07 +02:00 • committed by Jörg Thalheim
parent 00d0e3ba98
commit 688b08939c
1 changed files with 42 additions and 45 deletions
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87
nixos/modules/services/networking/flannel.nix
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@ -1,11 +1,8 @@
{ config, lib, pkgs, ... }: { config, lib, pkgs, ... }:
with lib;
let let
cfg = config.services.flannel; cfg = config.services.flannel;
networkConfig = filterAttrs (n: v: v != null) { networkConfig = lib.filterAttrs (n: v: v != null) {
Network = cfg.network; Network = cfg.network;
SubnetLen = cfg.subnetLen; SubnetLen = cfg.subnetLen;
SubnetMin = cfg.subnetMin; SubnetMin = cfg.subnetMin;
@ -14,128 +11,128 @@ let
}; };
in { in {
options.services.flannel = { options.services.flannel = {
enable = mkEnableOption "flannel"; enable = lib.mkEnableOption "flannel";
package = mkPackageOption pkgs "flannel" { }; package = lib.mkPackageOption pkgs "flannel" { };
publicIp = mkOption { publicIp = lib.mkOption {
description = '' description = ''
IP accessible by other nodes for inter-host communication. IP accessible by other nodes for inter-host communication.
Defaults to the IP of the interface being used for communication. Defaults to the IP of the interface being used for communication.
''; '';
type = types.nullOr types.str; type = lib.types.nullOr lib.types.str;
default = null; default = null;
}; };
iface = mkOption { iface = lib.mkOption {
description = '' description = ''
Interface to use (IP or name) for inter-host communication. Interface to use (IP or name) for inter-host communication.
Defaults to the interface for the default route on the machine. Defaults to the interface for the default route on the machine.
''; '';
type = types.nullOr types.str; type = lib.types.nullOr lib.types.str;
default = null; default = null;
}; };
etcd = { etcd = {
endpoints = mkOption { endpoints = lib.mkOption {
description = "Etcd endpoints"; description = "Etcd endpoints";
type = types.listOf types.str; type = lib.types.listOf lib.types.str;
default = ["http://127.0.0.1:2379"]; default = ["http://127.0.0.1:2379"];
}; };
prefix = mkOption { prefix = lib.mkOption {
description = "Etcd key prefix"; description = "Etcd key prefix";
type = types.str; type = lib.types.str;
default = "/coreos.com/network"; default = "/coreos.com/network";
}; };
caFile = mkOption { caFile = lib.mkOption {
description = "Etcd certificate authority file"; description = "Etcd certificate authority file";
type = types.nullOr types.path; type = lib.types.nullOr lib.types.path;
default = null; default = null;
}; };
certFile = mkOption { certFile = lib.mkOption {
description = "Etcd cert file"; description = "Etcd cert file";
type = types.nullOr types.path; type = lib.types.nullOr lib.types.path;
default = null; default = null;
}; };
keyFile = mkOption { keyFile = lib.mkOption {
description = "Etcd key file"; description = "Etcd key file";
type = types.nullOr types.path; type = lib.types.nullOr lib.types.path;
default = null; default = null;
}; };
}; };
kubeconfig = mkOption { kubeconfig = lib.mkOption {
description = '' description = ''
Path to kubeconfig to use for storing flannel config using the Path to kubeconfig to use for storing flannel config using the
Kubernetes API Kubernetes API
''; '';
type = types.nullOr types.path; type = lib.types.nullOr lib.types.path;
default = null; default = null;
}; };
network = mkOption { network = lib.mkOption {
description = " IPv4 network in CIDR format to use for the entire flannel network."; description = " IPv4 network in CIDR format to use for the entire flannel network.";
type = types.str; type = lib.types.str;
}; };
nodeName = mkOption { nodeName = lib.mkOption {
description = '' description = ''
Needed when running with Kubernetes as backend as this cannot be auto-detected"; Needed when running with Kubernetes as backend as this cannot be auto-detected";
''; '';
type = types.nullOr types.str; type = lib.types.nullOr lib.types.str;
default = config.networking.fqdnOrHostName; default = config.networking.fqdnOrHostName;
defaultText = literalExpression "config.networking.fqdnOrHostName"; defaultText = lib.literalExpression "config.networking.fqdnOrHostName";
example = "node1.example.com"; example = "node1.example.com";
}; };
storageBackend = mkOption { storageBackend = lib.mkOption {
description = "Determines where flannel stores its configuration at runtime"; description = "Determines where flannel stores its configuration at runtime";
type = types.enum ["etcd" "kubernetes"]; type = lib.types.enum ["etcd" "kubernetes"];
default = "etcd"; default = "etcd";
}; };
subnetLen = mkOption { subnetLen = lib.mkOption {
description = '' description = ''
The size of the subnet allocated to each host. Defaults to 24 (i.e. /24) The size of the subnet allocated to each host. Defaults to 24 (i.e. /24)
unless the Network was configured to be smaller than a /24 in which case unless the Network was configured to be smaller than a /24 in which case
it is one less than the network. it is one less than the network.
''; '';
type = types.int; type = lib.types.int;
default = 24; default = 24;
}; };
subnetMin = mkOption { subnetMin = lib.mkOption {
description = '' description = ''
The beginning of IP range which the subnet allocation should start with. The beginning of IP range which the subnet allocation should start with.
Defaults to the first subnet of Network. Defaults to the first subnet of Network.
''; '';
type = types.nullOr types.str; type = lib.types.nullOr lib.types.str;
default = null; default = null;
}; };
subnetMax = mkOption { subnetMax = lib.mkOption {
description = '' description = ''
The end of IP range which the subnet allocation should start with. The end of IP range which the subnet allocation should start with.
Defaults to the last subnet of Network. Defaults to the last subnet of Network.
''; '';
type = types.nullOr types.str; type = lib.types.nullOr lib.types.str;
default = null; default = null;
}; };
backend = mkOption { backend = lib.mkOption {
description = "Type of backend to use and specific configurations for that backend."; description = "Type of backend to use and specific configurations for that backend.";
type = types.attrs; type = lib.types.attrs;
default = { default = {
Type = "vxlan"; Type = "vxlan";
}; };
}; };
}; };
config = mkIf cfg.enable { config = lib.mkIf cfg.enable {
systemd.services.flannel = { systemd.services.flannel = {
description = "Flannel Service"; description = "Flannel Service";
wantedBy = [ "multi-user.target" ]; wantedBy = [ "multi-user.target" ];
@ -143,23 +140,23 @@ in {
environment = { environment = {
FLANNELD_PUBLIC_IP = cfg.publicIp; FLANNELD_PUBLIC_IP = cfg.publicIp;
FLANNELD_IFACE = cfg.iface; FLANNELD_IFACE = cfg.iface;
} // optionalAttrs (cfg.storageBackend == "etcd") { } // lib.optionalAttrs (cfg.storageBackend == "etcd") {
FLANNELD_ETCD_ENDPOINTS = concatStringsSep "," cfg.etcd.endpoints; FLANNELD_ETCD_ENDPOINTS = lib.concatStringsSep "," cfg.etcd.endpoints;
FLANNELD_ETCD_KEYFILE = cfg.etcd.keyFile; FLANNELD_ETCD_KEYFILE = cfg.etcd.keyFile;
FLANNELD_ETCD_CERTFILE = cfg.etcd.certFile; FLANNELD_ETCD_CERTFILE = cfg.etcd.certFile;
FLANNELD_ETCD_CAFILE = cfg.etcd.caFile; FLANNELD_ETCD_CAFILE = cfg.etcd.caFile;
ETCDCTL_CERT = cfg.etcd.certFile; ETCDCTL_CERT = cfg.etcd.certFile;
ETCDCTL_KEY = cfg.etcd.keyFile; ETCDCTL_KEY = cfg.etcd.keyFile;
ETCDCTL_CACERT = cfg.etcd.caFile; ETCDCTL_CACERT = cfg.etcd.caFile;
ETCDCTL_ENDPOINTS = concatStringsSep "," cfg.etcd.endpoints; ETCDCTL_ENDPOINTS = lib.concatStringsSep "," cfg.etcd.endpoints;
ETCDCTL_API = "3"; ETCDCTL_API = "3";
} // optionalAttrs (cfg.storageBackend == "kubernetes") { } // lib.optionalAttrs (cfg.storageBackend == "kubernetes") {
FLANNELD_KUBE_SUBNET_MGR = "true"; FLANNELD_KUBE_SUBNET_MGR = "true";
FLANNELD_KUBECONFIG_FILE = cfg.kubeconfig; FLANNELD_KUBECONFIG_FILE = cfg.kubeconfig;
NODE_NAME = cfg.nodeName; NODE_NAME = cfg.nodeName;
}; };
path = [ pkgs.iptables ]; path = [ pkgs.iptables ];
preStart = optionalString (cfg.storageBackend == "etcd") '' preStart = lib.optionalString (cfg.storageBackend == "etcd") ''
echo "setting network configuration" echo "setting network configuration"
until ${pkgs.etcd}/bin/etcdctl put /coreos.com/network/config '${builtins.toJSON networkConfig}' until ${pkgs.etcd}/bin/etcdctl put /coreos.com/network/config '${builtins.toJSON networkConfig}'
do do
@ -175,11 +172,11 @@ in {
}; };
}; };
services.etcd.enable = mkDefault (cfg.storageBackend == "etcd" && cfg.etcd.endpoints == ["http://127.0.0.1:2379"]); services.etcd.enable = lib.mkDefault (cfg.storageBackend == "etcd" && cfg.etcd.endpoints == ["http://127.0.0.1:2379"]);
# for some reason, flannel doesn't let you configure this path # for some reason, flannel doesn't let you configure this path
# see: https://github.com/coreos/flannel/blob/master/Documentation/configuration.md#configuration # see: https://github.com/coreos/flannel/blob/master/Documentation/configuration.md#configuration
environment.etc."kube-flannel/net-conf.json" = mkIf (cfg.storageBackend == "kubernetes") { environment.etc."kube-flannel/net-conf.json" = lib.mkIf (cfg.storageBackend == "kubernetes") {
source = pkgs.writeText "net-conf.json" (builtins.toJSON networkConfig); source = pkgs.writeText "net-conf.json" (builtins.toJSON networkConfig);
}; };
}; };