/
control_plane.go
432 lines (355 loc) · 16.6 KB
/
control_plane.go
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package k8s
import (
"context"
"fmt"
"strconv"
"strings"
"github.com/cosi-project/runtime/pkg/controller"
"github.com/cosi-project/runtime/pkg/controller/generic"
"github.com/cosi-project/runtime/pkg/controller/generic/transform"
"github.com/cosi-project/runtime/pkg/safe"
"github.com/cosi-project/runtime/pkg/state"
"github.com/siderolabs/gen/optional"
"github.com/siderolabs/gen/value"
"github.com/siderolabs/gen/xslices"
"go.uber.org/zap"
v1 "k8s.io/api/core/v1"
"github.com/siderolabs/talos/pkg/argsbuilder"
"github.com/siderolabs/talos/pkg/images"
talosconfig "github.com/siderolabs/talos/pkg/machinery/config/config"
"github.com/siderolabs/talos/pkg/machinery/constants"
"github.com/siderolabs/talos/pkg/machinery/nethelpers"
"github.com/siderolabs/talos/pkg/machinery/resources/config"
"github.com/siderolabs/talos/pkg/machinery/resources/k8s"
"github.com/siderolabs/talos/pkg/machinery/resources/network"
)
// controlplaneMapFunc is a shared "map" func for transform controller which guards on:
// * machine config is there
// * it has cluster & machine parts
// * machine is controlplane one.
func controlplaneMapFunc[Output generic.ResourceWithRD](output Output) func(cfg *config.MachineConfig) optional.Optional[Output] {
return func(cfg *config.MachineConfig) optional.Optional[Output] {
if cfg.Metadata().ID() != config.V1Alpha1ID {
return optional.None[Output]()
}
if cfg.Config().Cluster() == nil || cfg.Config().Machine() == nil {
return optional.None[Output]()
}
if !cfg.Config().Machine().Type().IsControlPlane() {
return optional.None[Output]()
}
return optional.Some(output)
}
}
// ControlPlaneAdmissionControlController manages k8s.AdmissionControlConfig based on configuration.
type ControlPlaneAdmissionControlController = transform.Controller[*config.MachineConfig, *k8s.AdmissionControlConfig]
// NewControlPlaneAdmissionControlController instanciates the controller.
func NewControlPlaneAdmissionControlController() *ControlPlaneAdmissionControlController {
return transform.NewController(
transform.Settings[*config.MachineConfig, *k8s.AdmissionControlConfig]{
Name: "k8s.ControlPlaneAdmissionControlController",
MapMetadataOptionalFunc: controlplaneMapFunc(k8s.NewAdmissionControlConfig()),
TransformFunc: func(ctx context.Context, r controller.Reader, logger *zap.Logger, machineConfig *config.MachineConfig, res *k8s.AdmissionControlConfig) error {
cfgProvider := machineConfig.Config()
res.TypedSpec().Config = nil
for _, cfg := range cfgProvider.Cluster().APIServer().AdmissionControl() {
res.TypedSpec().Config = append(res.TypedSpec().Config,
k8s.AdmissionPluginSpec{
Name: cfg.Name(),
Configuration: cfg.Configuration(),
},
)
}
return nil
},
},
)
}
// ControlPlaneAuditPolicyController manages k8s.AuditPolicyConfig based on configuration.
type ControlPlaneAuditPolicyController = transform.Controller[*config.MachineConfig, *k8s.AuditPolicyConfig]
// NewControlPlaneAuditPolicyController instanciates the controller.
func NewControlPlaneAuditPolicyController() *ControlPlaneAuditPolicyController {
return transform.NewController(
transform.Settings[*config.MachineConfig, *k8s.AuditPolicyConfig]{
Name: "k8s.ControlPlaneAuditPolicyController",
MapMetadataOptionalFunc: controlplaneMapFunc(k8s.NewAuditPolicyConfig()),
TransformFunc: func(ctx context.Context, r controller.Reader, logger *zap.Logger, machineConfig *config.MachineConfig, res *k8s.AuditPolicyConfig) error {
cfgProvider := machineConfig.Config()
res.TypedSpec().Config = cfgProvider.Cluster().APIServer().AuditPolicy()
return nil
},
},
)
}
// ControlPlaneAPIServerController manages k8s.APIServerConfig based on configuration.
type ControlPlaneAPIServerController = transform.Controller[*config.MachineConfig, *k8s.APIServerConfig]
// NewControlPlaneAPIServerController instanciates the controller.
func NewControlPlaneAPIServerController() *ControlPlaneAPIServerController {
return transform.NewController(
transform.Settings[*config.MachineConfig, *k8s.APIServerConfig]{
Name: "k8s.ControlPlaneAPIServerController",
MapMetadataOptionalFunc: controlplaneMapFunc(k8s.NewAPIServerConfig()),
TransformFunc: func(ctx context.Context, r controller.Reader, logger *zap.Logger, machineConfig *config.MachineConfig, res *k8s.APIServerConfig) error {
cfgProvider := machineConfig.Config()
var cloudProvider string
if cfgProvider.Cluster().ExternalCloudProvider().Enabled() {
cloudProvider = "external" //nolint:goconst
}
advertisedAddress := "$(POD_IP)"
if cfgProvider.Machine().Kubelet().SkipNodeRegistration() {
advertisedAddress = ""
}
*res.TypedSpec() = k8s.APIServerConfigSpec{
Image: cfgProvider.Cluster().APIServer().Image(),
CloudProvider: cloudProvider,
ControlPlaneEndpoint: cfgProvider.Cluster().Endpoint().String(),
EtcdServers: []string{fmt.Sprintf("https://%s", nethelpers.JoinHostPort("localhost", constants.EtcdClientPort))},
LocalPort: cfgProvider.Cluster().LocalAPIServerPort(),
ServiceCIDRs: cfgProvider.Cluster().Network().ServiceCIDRs(),
ExtraArgs: cfgProvider.Cluster().APIServer().ExtraArgs(),
ExtraVolumes: convertVolumes(cfgProvider.Cluster().APIServer().ExtraVolumes()),
EnvironmentVariables: cfgProvider.Cluster().APIServer().Env(),
PodSecurityPolicyEnabled: !cfgProvider.Cluster().APIServer().DisablePodSecurityPolicy(),
AdvertisedAddress: advertisedAddress,
Resources: convertResources(cfgProvider.Cluster().APIServer().Resources()),
}
return nil
},
},
)
}
// ControlPlaneControllerManagerController manages k8s.ControllerManagerConfig based on configuration.
type ControlPlaneControllerManagerController = transform.Controller[*config.MachineConfig, *k8s.ControllerManagerConfig]
// NewControlPlaneControllerManagerController instanciates the controller.
func NewControlPlaneControllerManagerController() *ControlPlaneControllerManagerController {
return transform.NewController(
transform.Settings[*config.MachineConfig, *k8s.ControllerManagerConfig]{
Name: "k8s.ControlPlaneControllerManagerController",
MapMetadataOptionalFunc: controlplaneMapFunc(k8s.NewControllerManagerConfig()),
TransformFunc: func(ctx context.Context, r controller.Reader, logger *zap.Logger, machineConfig *config.MachineConfig, res *k8s.ControllerManagerConfig) error {
cfgProvider := machineConfig.Config()
var cloudProvider string
if cfgProvider.Cluster().ExternalCloudProvider().Enabled() {
cloudProvider = "external"
}
*res.TypedSpec() = k8s.ControllerManagerConfigSpec{
Enabled: !cfgProvider.Machine().Controlplane().ControllerManager().Disabled(),
Image: cfgProvider.Cluster().ControllerManager().Image(),
CloudProvider: cloudProvider,
PodCIDRs: cfgProvider.Cluster().Network().PodCIDRs(),
ServiceCIDRs: cfgProvider.Cluster().Network().ServiceCIDRs(),
ExtraArgs: cfgProvider.Cluster().ControllerManager().ExtraArgs(),
ExtraVolumes: convertVolumes(cfgProvider.Cluster().ControllerManager().ExtraVolumes()),
EnvironmentVariables: cfgProvider.Cluster().ControllerManager().Env(),
Resources: convertResources(cfgProvider.Cluster().ControllerManager().Resources()),
}
return nil
},
},
)
}
// ControlPlaneSchedulerController manages k8s.SchedulerConfig based on configuration.
type ControlPlaneSchedulerController = transform.Controller[*config.MachineConfig, *k8s.SchedulerConfig]
// NewControlPlaneSchedulerController instanciates the controller.
func NewControlPlaneSchedulerController() *ControlPlaneSchedulerController {
return transform.NewController(
transform.Settings[*config.MachineConfig, *k8s.SchedulerConfig]{
Name: "k8s.ControlPlaneSchedulerController",
MapMetadataOptionalFunc: controlplaneMapFunc(k8s.NewSchedulerConfig()),
TransformFunc: func(ctx context.Context, r controller.Reader, logger *zap.Logger, machineConfig *config.MachineConfig, res *k8s.SchedulerConfig) error {
cfgProvider := machineConfig.Config()
*res.TypedSpec() = k8s.SchedulerConfigSpec{
Enabled: !cfgProvider.Machine().Controlplane().Scheduler().Disabled(),
Image: cfgProvider.Cluster().Scheduler().Image(),
ExtraArgs: cfgProvider.Cluster().Scheduler().ExtraArgs(),
ExtraVolumes: convertVolumes(cfgProvider.Cluster().Scheduler().ExtraVolumes()),
EnvironmentVariables: cfgProvider.Cluster().Scheduler().Env(),
Resources: convertResources(cfgProvider.Cluster().Scheduler().Resources()),
Config: cfgProvider.Cluster().Scheduler().Config(),
}
return nil
},
},
)
}
// ControlPlaneBootstrapManifestsController manages k8s.BootstrapManifestsConfig based on configuration.
type ControlPlaneBootstrapManifestsController = transform.Controller[*config.MachineConfig, *k8s.BootstrapManifestsConfig]
// NewControlPlaneBootstrapManifestsController instanciates the controller.
//
//nolint:gocyclo
func NewControlPlaneBootstrapManifestsController() *ControlPlaneBootstrapManifestsController {
return transform.NewController(
transform.Settings[*config.MachineConfig, *k8s.BootstrapManifestsConfig]{
Name: "k8s.ControlPlaneBootstrapManifestsController",
MapMetadataOptionalFunc: controlplaneMapFunc(k8s.NewBootstrapManifestsConfig()),
TransformFunc: func(ctx context.Context, r controller.Reader, logger *zap.Logger, machineConfig *config.MachineConfig, res *k8s.BootstrapManifestsConfig) error {
cfgProvider := machineConfig.Config()
dnsServiceIPs, err := cfgProvider.Cluster().Network().DNSServiceIPs()
if err != nil {
return fmt.Errorf("error calculating DNS service IPs: %w", err)
}
dnsServiceIP := ""
dnsServiceIPv6 := ""
for _, ip := range dnsServiceIPs {
if dnsServiceIP == "" && ip.Is4() {
dnsServiceIP = ip.String()
}
if dnsServiceIPv6 == "" && ip.Is6() {
dnsServiceIPv6 = ip.String()
}
}
images := images.List(cfgProvider)
proxyArgs, err := getProxyArgs(cfgProvider)
if err != nil {
return err
}
var (
server string
flannelKubeServiceHost, flannelKubeServicePort string
)
if cfgProvider.Machine().Features().KubePrism().Enabled() {
server = fmt.Sprintf("https://127.0.0.1:%d", cfgProvider.Machine().Features().KubePrism().Port())
flannelKubeServiceHost = "127.0.0.1"
flannelKubeServicePort = strconv.Itoa(cfgProvider.Machine().Features().KubePrism().Port())
} else {
server = cfgProvider.Cluster().Endpoint().String()
}
hostDNSCfg, err := safe.ReaderGetByID[*network.HostDNSConfig](ctx, r, network.HostDNSConfigID)
if err != nil && !state.IsNotFoundError(err) {
return fmt.Errorf("error getting host DNS config: %w", err)
}
var serviceHostDNSAddress string
if hostDNSCfg != nil && !value.IsZero(hostDNSCfg.TypedSpec().ServiceHostDNSAddress) {
serviceHostDNSAddress = hostDNSCfg.TypedSpec().ServiceHostDNSAddress.String()
}
*res.TypedSpec() = k8s.BootstrapManifestsConfigSpec{
Server: server,
ClusterDomain: cfgProvider.Cluster().Network().DNSDomain(),
PodCIDRs: cfgProvider.Cluster().Network().PodCIDRs(),
ProxyEnabled: cfgProvider.Cluster().Proxy().Enabled(),
ProxyImage: cfgProvider.Cluster().Proxy().Image(),
ProxyArgs: proxyArgs,
CoreDNSEnabled: cfgProvider.Cluster().CoreDNS().Enabled(),
CoreDNSImage: cfgProvider.Cluster().CoreDNS().Image(),
DNSServiceIP: dnsServiceIP,
DNSServiceIPv6: dnsServiceIPv6,
FlannelEnabled: cfgProvider.Cluster().Network().CNI().Name() == constants.FlannelCNI,
FlannelImage: images.Flannel,
FlannelCNIImage: images.FlannelCNI,
FlannelExtraArgs: cfgProvider.Cluster().Network().CNI().Flannel().ExtraArgs(),
FlannelKubeServiceHost: flannelKubeServiceHost,
FlannelKubeServicePort: flannelKubeServicePort,
PodSecurityPolicyEnabled: !cfgProvider.Cluster().APIServer().DisablePodSecurityPolicy(),
TalosAPIServiceEnabled: cfgProvider.Machine().Features().KubernetesTalosAPIAccess().Enabled(),
ServiceHostDNSAddress: serviceHostDNSAddress,
}
return nil
},
},
transform.WithExtraInputs(
controller.Input{
Namespace: network.NamespaceName,
Type: network.HostDNSConfigType,
ID: optional.Some(network.HostDNSConfigID),
Kind: controller.InputWeak,
},
),
)
}
// ControlPlaneExtraManifestsController manages k8s.ExtraManifestsConfig based on configuration.
type ControlPlaneExtraManifestsController = transform.Controller[*config.MachineConfig, *k8s.ExtraManifestsConfig]
// NewControlPlaneExtraManifestsController instanciates the controller.
func NewControlPlaneExtraManifestsController() *ControlPlaneExtraManifestsController {
return transform.NewController(
transform.Settings[*config.MachineConfig, *k8s.ExtraManifestsConfig]{
Name: "k8s.ControlPlaneExtraManifestsController",
MapMetadataOptionalFunc: controlplaneMapFunc(k8s.NewExtraManifestsConfig()),
TransformFunc: func(ctx context.Context, r controller.Reader, logger *zap.Logger, machineConfig *config.MachineConfig, res *k8s.ExtraManifestsConfig) error {
cfgProvider := machineConfig.Config()
spec := k8s.ExtraManifestsConfigSpec{}
for _, url := range cfgProvider.Cluster().Network().CNI().URLs() {
spec.ExtraManifests = append(spec.ExtraManifests, k8s.ExtraManifest{
Name: url,
URL: url,
Priority: "05", // push CNI to the top
})
}
for _, url := range cfgProvider.Cluster().ExternalCloudProvider().ManifestURLs() {
spec.ExtraManifests = append(spec.ExtraManifests, k8s.ExtraManifest{
Name: url,
URL: url,
Priority: "30", // after default manifests
})
}
for _, url := range cfgProvider.Cluster().ExtraManifestURLs() {
spec.ExtraManifests = append(spec.ExtraManifests, k8s.ExtraManifest{
Name: url,
URL: url,
Priority: "99", // make sure extra manifests come last, when PSP is already created
ExtraHeaders: cfgProvider.Cluster().ExtraManifestHeaderMap(),
})
}
for _, manifest := range cfgProvider.Cluster().InlineManifests() {
spec.ExtraManifests = append(spec.ExtraManifests, k8s.ExtraManifest{
Name: manifest.Name(),
Priority: "99", // make sure extra manifests come last, when PSP is already created
InlineManifest: manifest.Contents(),
})
}
*res.TypedSpec() = spec
return nil
},
},
)
}
func convertVolumes(volumes []talosconfig.VolumeMount) []k8s.ExtraVolume {
return xslices.Map(volumes, func(v talosconfig.VolumeMount) k8s.ExtraVolume {
return k8s.ExtraVolume{
Name: v.Name(),
HostPath: v.HostPath(),
MountPath: v.MountPath(),
ReadOnly: v.ReadOnly(),
}
})
}
func convertResources(resources talosconfig.Resources) k8s.Resources {
var convertedLimits map[string]string
cpuLimits := resources.CPULimits()
memoryLimits := resources.MemoryLimits()
if cpuLimits != "" || memoryLimits != "" {
convertedLimits = map[string]string{}
if cpuLimits != "" {
convertedLimits[string(v1.ResourceCPU)] = cpuLimits
}
if memoryLimits != "" {
convertedLimits[string(v1.ResourceMemory)] = memoryLimits
}
}
return k8s.Resources{
Requests: map[string]string{
string(v1.ResourceCPU): resources.CPURequests(),
string(v1.ResourceMemory): resources.MemoryRequests(),
},
Limits: convertedLimits,
}
}
func getProxyArgs(cfgProvider talosconfig.Config) ([]string, error) {
clusterCidr := strings.Join(cfgProvider.Cluster().Network().PodCIDRs(), ",")
builder := argsbuilder.Args{
"cluster-cidr": clusterCidr,
"hostname-override": "$(NODE_NAME)",
"kubeconfig": "/etc/kubernetes/kubeconfig",
"proxy-mode": cfgProvider.Cluster().Proxy().Mode(),
"conntrack-max-per-core": "0",
}
policies := argsbuilder.MergePolicies{
"kubeconfig": argsbuilder.MergeDenied,
}
if err := builder.Merge(cfgProvider.Cluster().Proxy().ExtraArgs(), argsbuilder.WithMergePolicies(policies)); err != nil {
return nil, err
}
return builder.Args(), nil
}