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Add logical backup (#442)

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* Add k8s cron job to spawn logical backups

* Minor doc updates
This commit is contained in:
Sergey Dudoladov
2019-05-16 15:52:01 +02:00
committed by GitHub
parent 2c02b371e2
commit f3e1e80aaf
24 changed files with 526 additions and 55 deletions
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pkg/util/config/config.go
+8
View File
@@ -66,12 +66,20 @@ type Scalyr struct {
ScalyrMemoryLimit string `name:"scalyr_memory_limit" default:"1Gi"`
}
// LogicalBackup
type LogicalBackup struct {
LogicalBackupSchedule string `name:"logical_backup_schedule" default:"30 00 * * *"`
LogicalBackupDockerImage string `name:"logical_backup_docker_image" default:"registry.opensource.zalan.do/acid/logical-backup"`
LogicalBackupS3Bucket string `name:"logical_backup_s3_bucket" default:""`
}
// Config describes operator config
type Config struct {
CRD
Resources
Auth
Scalyr
LogicalBackup
WatchedNamespace string `name:"watched_namespace"` // special values: "*" means 'watch all namespaces', the empty string "" means 'watch a namespace where operator is deployed to'
EtcdHost string `name:"etcd_host" default:""` // special values: the empty string "" means Patroni will use k8s as a DCS
pkg/util/k8sutil/k8sutil.go
+28 -1
View File
@@ -6,8 +6,11 @@ import (
b64 "encoding/base64"
batchv1beta1 "k8s.io/api/batch/v1beta1"
clientbatchv1beta1 "k8s.io/client-go/kubernetes/typed/batch/v1beta1"
"github.com/zalando/postgres-operator/pkg/util/constants"
"k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
policybeta1 "k8s.io/api/policy/v1beta1"
apiextclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
apiextbeta1 "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset/typed/apiextensions/v1beta1"
@@ -40,6 +43,7 @@ type KubernetesClient struct {
rbacv1beta1.RoleBindingsGetter
policyv1beta1.PodDisruptionBudgetsGetter
apiextbeta1.CustomResourceDefinitionsGetter
clientbatchv1beta1.CronJobsGetter
RESTClient rest.Interface
AcidV1ClientSet *acidv1client.Clientset
@@ -101,6 +105,7 @@ func NewFromConfig(cfg *rest.Config) (KubernetesClient, error) {
kubeClient.PodDisruptionBudgetsGetter = client.PolicyV1beta1()
kubeClient.RESTClient = client.CoreV1().RESTClient()
kubeClient.RoleBindingsGetter = client.RbacV1beta1()
kubeClient.CronJobsGetter = client.BatchV1beta1()
apiextClient, err := apiextclient.NewForConfig(cfg)
if err != nil {
@@ -159,6 +164,28 @@ func SamePDB(cur, new *policybeta1.PodDisruptionBudget) (match bool, reason stri
return
}
func getJobImage(cronJob *batchv1beta1.CronJob) string {
return cronJob.Spec.JobTemplate.Spec.Template.Spec.Containers[0].Image
}
// SameLogicalBackupJob compares Specs of logical backup cron jobs
func SameLogicalBackupJob(cur, new *batchv1beta1.CronJob) (match bool, reason string) {
if cur.Spec.Schedule != new.Spec.Schedule {
return false, fmt.Sprintf("new job's schedule %q doesn't match the current one %q",
new.Spec.Schedule, cur.Spec.Schedule)
}
newImage := getJobImage(new)
curImage := getJobImage(cur)
if newImage != curImage {
return false, fmt.Sprintf("new job's image %q doesn't match the current one %q",
newImage, curImage)
}
return true, ""
}
func (c *mockSecret) Get(name string, options metav1.GetOptions) (*v1.Secret, error) {
if name != "infrastructureroles-test" {
return nil, fmt.Errorf("NotFound")