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cronjob.go
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cronjob.go
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/*
Copyright 2020 The Kubermatic Kubernetes Platform contributors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package etcd
import (
"fmt"
"path/filepath"
kubermaticv1 "k8c.io/kubermatic/v2/pkg/apis/kubermatic/v1"
"k8c.io/kubermatic/v2/pkg/controller/master-controller-manager/rbac"
"k8c.io/kubermatic/v2/pkg/resources"
"k8c.io/reconciler/pkg/reconciling"
batchv1 "k8s.io/api/batch/v1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/utils/ptr"
)
type cronJobReconcilerData interface {
Cluster() *kubermaticv1.Cluster
RewriteImage(string) (string, error)
GetClusterRef() metav1.OwnerReference
EtcdLauncherImage() string
EtcdLauncherTag() string
}
// CronJobReconciler returns the func to create/update the etcd defragger cronjob.
func CronJobReconciler(data cronJobReconcilerData) reconciling.NamedCronJobReconcilerFactory {
return func() (string, reconciling.CronJobReconciler) {
return resources.EtcdDefragCronJobName, func(job *batchv1.CronJob) (*batchv1.CronJob, error) {
job.Name = resources.EtcdDefragCronJobName
job.Spec.ConcurrencyPolicy = batchv1.ForbidConcurrent
job.Spec.SuccessfulJobsHistoryLimit = ptr.To[int32](1)
job.Spec.Schedule = "@every 3h"
job.Spec.JobTemplate.Spec.Template.Spec.ServiceAccountName = rbac.EtcdLauncherServiceAccountName
job.Spec.JobTemplate.Spec.Template.Spec.RestartPolicy = corev1.RestartPolicyOnFailure
job.Spec.JobTemplate.Spec.Template.Spec.ImagePullSecrets = []corev1.LocalObjectReference{{Name: resources.ImagePullSecretName}}
job.Spec.JobTemplate.Spec.Template.Spec.Containers = []corev1.Container{
{
Name: "defragger",
Image: fmt.Sprintf("%s:%s", data.EtcdLauncherImage(), data.EtcdLauncherTag()),
Command: defraggerCommand(data),
VolumeMounts: []corev1.VolumeMount{
{
Name: resources.ApiserverEtcdClientCertificateSecretName,
MountPath: "/etc/etcd/pki/client",
ReadOnly: true,
},
},
},
}
job.Spec.JobTemplate.Spec.Template.Spec.Volumes = []corev1.Volume{
{
Name: resources.ApiserverEtcdClientCertificateSecretName,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: resources.ApiserverEtcdClientCertificateSecretName,
},
},
},
}
return job, nil
}
}
}
func defraggerCommand(data cronJobReconcilerData) []string {
return []string{
"/etcd-launcher",
"defrag",
"--etcd-ca-file=/etc/etcd/pki/client/ca.crt",
fmt.Sprintf("--etcd-client-cert-file=%s", filepath.Join("/etc/etcd/pki/client", resources.ApiserverEtcdClientCertificateCertSecretKey)),
fmt.Sprintf("--etcd-client-key-file=%s", filepath.Join("/etc/etcd/pki/client", resources.ApiserverEtcdClientCertificateKeySecretKey)),
fmt.Sprintf("--cluster=%s", data.Cluster().Name),
}
}