mirror of https://github.com/kubernetes/kops.git
117 lines
3.3 KiB
Go
117 lines
3.3 KiB
Go
/*
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Copyright 2016 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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"fmt"
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"strings"
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"github.com/golang/glog"
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"k8s.io/kops/nodeup/pkg/distros"
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"k8s.io/kops/pkg/apis/kops/util"
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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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)
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// LogrotateBuilder installs logrotate.d and configures log rotation for kubernetes logs
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type LogrotateBuilder struct {
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*NodeupModelContext
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}
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var _ fi.ModelBuilder = &LogrotateBuilder{}
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func (b *LogrotateBuilder) Build(c *fi.ModelBuilderContext) error {
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if b.Distribution == distros.DistributionCoreOS {
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glog.Infof("Detected CoreOS; won't install logrotate")
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return nil
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}
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if b.Distribution == distros.DistributionContainerOS {
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glog.Infof("Detected ContainerOS; won't install logrotate")
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return nil
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}
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c.AddTask(&nodetasks.Package{Name: "logrotate"})
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k8sVersion, err := util.ParseKubernetesVersion(b.Cluster.Spec.KubernetesVersion)
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if err != nil || k8sVersion == nil {
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return fmt.Errorf("unable to parse KubernetesVersion %q", b.Cluster.Spec.KubernetesVersion)
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}
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if k8sVersion.Major == 1 && k8sVersion.Minor < 6 {
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// In version 1.6, we move log rotation to docker, but prior to that we need a logrotate rule
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b.addLogRotate(c, "docker-containers", "/var/lib/docker/containers/*/*-json.log", logRotateOptions{MaxSize: "10M"})
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}
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b.addLogRotate(c, "docker", "/var/log/docker.log", logRotateOptions{})
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b.addLogRotate(c, "kube-addons", "/var/log/kube-addons.log", logRotateOptions{})
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b.addLogRotate(c, "kube-apiserver", "/var/log/kube-apiserver.log", logRotateOptions{})
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b.addLogRotate(c, "kube-controller-manager", "/var/log/kube-controller-manager.log", logRotateOptions{})
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b.addLogRotate(c, "kube-proxy", "/var/log/kube-proxy.log", logRotateOptions{})
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b.addLogRotate(c, "kube-scheduler", "/var/log/kube-scheduler.log", logRotateOptions{})
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b.addLogRotate(c, "kubelet", "/var/log/kubelet.log", logRotateOptions{})
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// Add cron job to run hourly
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{
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script := `#!/bin/sh
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logrotate /etc/logrotate.conf`
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t := &nodetasks.File{
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Path: "/etc/cron.hourly/logrotate",
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Contents: fi.NewStringResource(script),
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Type: nodetasks.FileType_File,
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Mode: s("0755"),
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}
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c.AddTask(t)
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}
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return nil
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}
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type logRotateOptions struct {
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MaxSize string
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}
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func (b *LogrotateBuilder) addLogRotate(c *fi.ModelBuilderContext, name, path string, options logRotateOptions) {
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if options.MaxSize == "" {
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options.MaxSize = "100M"
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}
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lines := []string{
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path + "{",
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" rotate 5",
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" copytruncate",
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" missingok",
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" notifempty",
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" delaycompress",
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" maxsize " + options.MaxSize,
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" daily",
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" create 0644 root root",
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"}",
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}
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contents := strings.Join(lines, "\n")
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t := &nodetasks.File{
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Path: "/etc/logrotate.d/" + name,
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Contents: fi.NewStringResource(contents),
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Type: nodetasks.FileType_File,
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Mode: s("0644"),
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}
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c.AddTask(t)
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}
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