mirror of https://github.com/kubernetes/kops.git
83 lines
2.5 KiB
Go
83 lines
2.5 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package model
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import (
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"k8s.io/kops/nodeup/pkg/distros"
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"k8s.io/kops/pkg/apis/kops"
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"k8s.io/kops/pkg/systemd"
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"k8s.io/kops/upup/pkg/fi"
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"k8s.io/kops/upup/pkg/fi/nodeup/nodetasks"
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"github.com/golang/glog"
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)
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// UpdateServiceBuilder disables the OS automatic updates
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type UpdateServiceBuilder struct {
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*NodeupModelContext
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}
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// ServiceName is the name given to the service to be created
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const ServiceName = "update-service"
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var _ fi.ModelBuilder = &UpdateServiceBuilder{}
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// Build is responsible for creating the relevant systemd service based on OS
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func (b *UpdateServiceBuilder) Build(c *fi.ModelBuilderContext) error {
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if b.Cluster.Spec.UpdatePolicy == nil || *b.Cluster.Spec.UpdatePolicy != kops.UpdatePolicyExternal {
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glog.Infof("UpdatePolicy not set in Cluster Spec; skipping creation of %s", ServiceName)
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return nil
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}
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for _, spec := range [][]kops.HookSpec{b.InstanceGroup.Spec.Hooks, b.Cluster.Spec.Hooks} {
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for _, hook := range spec {
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if hook.Name == ServiceName || hook.Name == ServiceName+".service" {
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glog.Infof("Detected kops Hook for '%s'; skipping creation", ServiceName)
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return nil
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}
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}
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}
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if b.Distribution == distros.DistributionCoreOS {
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glog.Infof("Detected OS %s; building %s service to disable update scheduler", ServiceName, b.Distribution)
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c.AddTask(b.buildCoreOSSystemdService())
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}
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return nil
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}
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func (b *UpdateServiceBuilder) buildCoreOSSystemdService() *nodetasks.Service {
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manifest := &systemd.Manifest{}
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manifest.Set("Unit", "Description", "Disable OS Update Scheduler")
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manifest.Set("Unit", "Before", "locksmithd.service")
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manifest.Set("Service", "Type", "oneshot")
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manifest.Set("Service", "ExecStart", "/usr/bin/systemctl mask --now locksmithd.service")
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manifestString := manifest.Render()
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glog.V(8).Infof("Built service manifest %q\n%s", ServiceName, manifestString)
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service := &nodetasks.Service{
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Name: ServiceName + ".service",
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Definition: s(manifestString),
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}
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service.InitDefaults()
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return service
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}
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