mirror of
https://github.com/siderolabs/talos.git
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d2fd7c2170
The gist is that `kubelet` service code only manages the container lifecycle, while `kubelet` configuration is managed now in the controllers and resources. New resources: * `secrets.Kubelet` contains Kubelet PKI derived directly from the machine configuration * `k8s.KubeletConfig` contains Kubelet non-secret config derived directly from the machine configuration * `k8s.NodeIPConfig` contains configuration on picking up Node IP for the kubelet (from machine configuration) * `k8s.NodeIP` contains actual Node IPs picked from the node addresses based on `NodeIPConfig` * `k8s.KubeletSpec` contains final `kubelet` container configuration, including merged arguments, KubeletConfig, etc. It is derived from `KubeletConfig`, `Nodename` and `NodeIP`. Final controller `KubeletServiceController` writes down configuration and PKI to disk, and manages restart/start of the `kubelet` service which is a pure wrapper around container lifecycle. Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
97 lines
2.9 KiB
Go
97 lines
2.9 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package k8s
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import (
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"fmt"
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"github.com/cosi-project/runtime/pkg/resource"
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"github.com/cosi-project/runtime/pkg/resource/meta"
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"github.com/opencontainers/runtime-spec/specs-go"
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)
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// KubeletConfigType is type of KubeletConfig resource.
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const KubeletConfigType = resource.Type("KubeletConfigs.kubernetes.talos.dev")
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// KubeletID is the ID of KubeletConfig resource.
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const KubeletID = resource.ID("kubelet")
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// KubeletConfig resource holds source of kubelet configuration.
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type KubeletConfig struct {
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md resource.Metadata
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spec *KubeletConfigSpec
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}
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// KubeletConfigSpec holds the source of kubelet configuration.
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type KubeletConfigSpec struct {
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Image string `yaml:"image"`
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ClusterDNS []string `yaml:"clusterDNS"`
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ClusterDomain string `yaml:"clusterDomain"`
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ExtraArgs map[string]string `yaml:"extraArgs,omitempty"`
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ExtraMounts []specs.Mount `yaml:"extraMounts,omitempty"`
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CloudProviderExternal bool `yaml:"cloudProviderExternal"`
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}
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// NewKubeletConfig initializes an empty KubeletConfig resource.
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func NewKubeletConfig(namespace resource.Namespace, id resource.ID) *KubeletConfig {
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r := &KubeletConfig{
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md: resource.NewMetadata(namespace, KubeletConfigType, id, resource.VersionUndefined),
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spec: &KubeletConfigSpec{},
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}
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r.md.BumpVersion()
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return r
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}
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// Metadata implements resource.Resource.
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func (r *KubeletConfig) Metadata() *resource.Metadata {
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return &r.md
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}
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// Spec implements resource.Resource.
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func (r *KubeletConfig) Spec() interface{} {
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return r.spec
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}
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func (r *KubeletConfig) String() string {
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return fmt.Sprintf("k8s.KubeletConfig(%q)", r.md.ID())
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}
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// DeepCopy implements resource.Resource.
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func (r *KubeletConfig) DeepCopy() resource.Resource {
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extraArgs := make(map[string]string, len(r.spec.ExtraArgs))
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for k, v := range r.spec.ExtraArgs {
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extraArgs[k] = v
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}
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return &KubeletConfig{
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md: r.md,
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spec: &KubeletConfigSpec{
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Image: r.spec.Image,
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ClusterDNS: append([]string(nil), r.spec.ClusterDNS...),
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ClusterDomain: r.spec.ClusterDomain,
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ExtraArgs: extraArgs,
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ExtraMounts: append([]specs.Mount(nil), r.spec.ExtraMounts...),
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CloudProviderExternal: r.spec.CloudProviderExternal,
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},
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}
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}
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// ResourceDefinition implements meta.ResourceDefinitionProvider interface.
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func (r *KubeletConfig) ResourceDefinition() meta.ResourceDefinitionSpec {
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return meta.ResourceDefinitionSpec{
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Type: KubeletConfigType,
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Aliases: []resource.Type{},
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DefaultNamespace: NamespaceName,
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}
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}
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// TypedSpec returns .spec.
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func (r *KubeletConfig) TypedSpec() *KubeletConfigSpec {
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return r.spec
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}
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