Backup and Restore SingleStore database using KubeStash
KubeStash allows you to backup and restore SingleStore databases. It supports backups for SingleStore instances running in Standalone, and cluster configurations. KubeStash makes managing your SingleStore backups and restorations more straightforward and efficient.
This guide will give you how you can take backup and restore your SingleStore databases using Kubestash.
Before You Begin
- At first, you need to have a Kubernetes cluster, and the
kubectlcommand-line tool must be configured to communicate with your cluster. If you do not already have a cluster, you can create one by usingMinikubeorKind. - Install
KubeDBin your cluster following the steps here. - Install
KubeStashin your cluster following the steps here. - Install KubeStash
kubectlplugin following the steps here. - If you are not familiar with how KubeStash backup and restore SingleStore databases, please check the following guide here.
You should be familiar with the following KubeStash concepts:
To keep everything isolated, we are going to use a separate namespace called demo throughout this tutorial.
$ kubectl create ns demo
namespace/demo created
Note: YAML files used in this tutorial are stored in docs/guides/singlestore/backup/kubestash/logical/examples directory of kubedb/docs repository.
Backup SingleStore
KubeStash supports backups for SingleStore instances across different configurations, including Standalone, and Cluster setups. In this demonstration, we’ll focus on a SingleStore database using Clustering mode. The backup and restore process is similar for Standalone and Cluster configurations as well.
This section will demonstrate how to backup a SingleStore database. Here, we are going to deploy a SingleStore database using KubeDB. Then, we are going to backup this database into a GCS bucket. Finally, we are going to restore the backup up data into another SingleStore database.
Create SingleStore License Secret
We need SingleStore License to create SingleStore Database. So, Ensure that you have acquired a license and then simply pass the license by secret.
$ kubectl create secret generic -n demo license-secret \
--from-literal=username=license \
--from-literal=password='your-license-set-here'
secret/license-secret created
Deploy Sample SingleStore Database
Let’s deploy a sample SingleStore database and insert some data into it.
Create SingleStore CR:
Below is the YAML of a sample SingleStore CRD that we are going to create for this tutorial:
apiVersion: kubedb.com/v1alpha2
kind: Singlestore
metadata:
name: sdb-sample
namespace: demo
spec:
version: "8.7.10"
topology:
aggregator:
replicas: 2
podTemplate:
spec:
containers:
- name: singlestore
resources:
limits:
memory: "2Gi"
cpu: "600m"
requests:
memory: "2Gi"
cpu: "600m"
storage:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
leaf:
replicas: 3
podTemplate:
spec:
containers:
- name: singlestore
resources:
limits:
memory: "2Gi"
cpu: "600m"
requests:
memory: "2Gi"
cpu: "600m"
storage:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
licenseSecret:
name: license-secret
storageType: Durable
deletionPolicy: WipeOut
Here,
spec.versionis the name of the SinglestoreVersion CRD where the docker images are specified. In this tutorial, a SingleStore8.7.10database is going to be created.spec.topologyspecifies that it will be used as cluster mode. If this field is nil it will be work as standalone mode.spec.topology.aggregator.replicasorspec.topology.leaf.replicasspecifies that the number replicas that will be used for aggregator or leaf.spec.storageTypespecifies the type of storage that will be used for SingleStore database. It can beDurableorEphemeral. Default value of this field isDurable. IfEphemeralis used then KubeDB will create SingleStore database usingEmptyDirvolume. In this case, you don’t have to specifyspec.storagefield. This is useful for testing purposes.spec.topology.aggregator.storageorspec.topology.leaf.storagespecifies the StorageClass of PVC dynamically allocated to store data for this database. This storage spec will be passed to the PetSet created by KubeDB operator to run database pods. You can specify any StorageClass available in your cluster with appropriate resource requests.spec.deletionPolicygives flexibility whether tonullify(reject) the delete operation ofSinglestorecrd or which resources KubeDB should keep or delete when you deleteSinglestorecrd. If admission webhook is enabled, It prevents users from deleting the database as long as thespec.deletionPolicyis set toDoNotTerminate. Learn details of allDeletionPolicyhere
Note:
spec.storagesection is used to create PVC for database pod. It will create PVC with storage size specified instorage.resources.requestsfield. Don’t specify limits here. PVC does not get resized automatically.
Create the above SingleStore CR,
$ kubectl apply -f https://github.com/kubedb/docs/raw/v2024.11.18/docs/guides/singlestore/backup/kubestash/logical/examples/sdb-sample.yaml
singlestore.kubedb.com/sdb-sample created
KubeDB will deploy a SingleStore database according to the above specification. It will also create the necessary Secrets and Services to access the database.
Let’s check if the database is ready to use,
$ kubectl get singlestores.kubedb.com -n demo
NAME VERSION STATUS AGE
sdb-sample 8.7.10 Ready 4m22s
The database is Ready. Verify that KubeDB has created a Secret and a Service for this database using the following commands,
$ kubectl get secret -n demo -l=app.kubernetes.io/instance=sdb-sample
NAME TYPE DATA AGE
sdb-sample-root-cred kubernetes.io/basic-auth 2 4m58s
$ kubectl get service -n demo -l=app.kubernetes.io/instance=sdb-sample
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
sdb-sample ClusterIP 10.128.230.168 <none> 3306/TCP,8081/TCP 5m10s
sdb-sample-pods ClusterIP None <none> 3306/TCP 5m10s
Here, we have to use service sdb-sample and secret sdb-sample-root-cred to connect with the database. KubeDB creates an AppBinding CR that holds the necessary information to connect with the database.
Verify AppBinding:
Verify that the AppBinding has been created successfully using the following command,
$ kubectl get appbindings -n demo
NAME AGE
sdb-sample 9m24s
Let’s check the YAML of the above AppBinding,
$ kubectl get appbindings -n demo sdb-sample -o yaml
apiVersion: appcatalog.appscode.com/v1alpha1
kind: AppBinding
metadata:
annotations:
kubectl.kubernetes.io/last-applied-configuration: |
{"apiVersion":"kubedb.com/v1alpha2","kind":"Singlestore","metadata":{"annotations":{},"name":"sdb-sample","namespace":"demo"},"spec":{"deletionPolicy":"WipeOut","licenseSecret":{"name":"license-secret"},"storageType":"Durable","topology":{"aggregator":{"podTemplate":{"spec":{"containers":[{"name":"singlestore","resources":{"limits":{"cpu":"0.6","memory":"2Gi"},"requests":{"cpu":"0.6","memory":"2Gi"}}}]}},"replicas":2,"storage":{"accessModes":["ReadWriteOnce"],"resources":{"requests":{"storage":"1Gi"}}}},"leaf":{"podTemplate":{"spec":{"containers":[{"name":"singlestore","resources":{"limits":{"cpu":"0.6","memory":"2Gi"},"requests":{"cpu":"0.6","memory":"2Gi"}}}]}},"replicas":3,"storage":{"accessModes":["ReadWriteOnce"],"resources":{"requests":{"storage":"10Gi"}}}}},"version":"8.7.10"}}
creationTimestamp: "2024-09-11T07:03:44Z"
generation: 1
labels:
app.kubernetes.io/component: database
app.kubernetes.io/instance: sdb-sample
app.kubernetes.io/managed-by: kubedb.com
app.kubernetes.io/name: singlestores.kubedb.com
name: sdb-sample
namespace: demo
ownerReferences:
- apiVersion: kubedb.com/v1alpha2
blockOwnerDeletion: true
controller: true
kind: Singlestore
name: sdb-sample
uid: e08e1f37-d869-437d-9b15-14c6aef3f406
resourceVersion: "4904220"
uid: 92b2b318-1874-4471-97ec-d789c6e16809
spec:
appRef:
apiGroup: kubedb.com
kind: Singlestore
name: sdb-sample
namespace: demo
clientConfig:
service:
name: sdb-sample
path: /
port: 3306
scheme: tcp
url: tcp(sdb-sample.demo.svc:3306)/
parameters:
apiVersion: config.kubedb.com/v1alpha1
kind: SinglestoreConfiguration
masterAggregator: sdb-sample-aggregator-0.sdb-sample-pods.demo.svc
stash:
addon:
backupTask:
name: ""
restoreTask:
name: ""
secret:
name: sdb-sample-root-cred
type: kubedb.com/singlestore
version: 8.7.10
KubeStash uses the AppBinding CR to connect with the target database. It requires the following two fields to set in AppBinding’s .spec section.
.spec.parameters.masterAggregatorspecifies the dns of master aggregator node that we have to mention in mysqldump command when taken backup or restore..spec.clientConfig.service.namespecifies the name of the Service that connects to the database..spec.secretspecifies the name of the Secret that holds necessary credentials to access the database.spec.typespecifies the types of the app that this AppBinding is pointing to. KubeDB generated AppBinding follows the following format:<app group>/<app resource type>.
Insert Sample Data:
Now, we are going to exec into the any aggregator pod and create some sample data. At first, find out the database Pod using the following command,
$ kubectl get pods -n demo --selector="app.kubernetes.io/instance=sdb-sample"
NAME READY STATUS RESTARTS AGE
sdb-sample-aggregator-0 2/2 Running 0 15m
sdb-sample-aggregator-1 2/2 Running 0 15m
sdb-sample-leaf-0 2/2 Running 0 15m
sdb-sample-leaf-1 2/2 Running 0 15m
sdb-sample-leaf-2 2/2 Running 0 15m
And copy the username and password of the root user to access into memsql shell.
$ kubectl get secret -n demo sdb-sample-root-cred -o jsonpath='{.data.username}'| base64 -d
root⏎
kubectl get secret -n demo sdb-sample-root-cred -o jsonpath='{.data.password}'| base64 -d
xEJv73q3w_m1~H.G⏎
Now, Lets exec into the any aggregator Pod to enter into mysql shell and create a database and a table,
$ kubectl exec -it -n demo sdb-sample-aggregator-0 -- singlestore --user=root --password=xEJv73q3w_m1~H.G
Defaulted container "singlestore" out of: singlestore, singlestore-coordinator, singlestore-init (init)
singlestore-client: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 300070
Server version: 5.7.32 SingleStoreDB source distribution (compatible; MySQL Enterprise & MySQL Commercial)
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
singlestore> CREATE DATABASE playground partitions 2;
Query OK, 1 row affected (0.01 sec)
singlestore> show databases;
+--------------------+
| Database |
+--------------------+
| cluster |
| demo |
| det |
| information_schema |
| memsql |
| playground |
| singlestore_health |
| test |
+--------------------+
8 rows in set (0.00 sec)
singlestore> CREATE TABLE playground.equipment ( id INT NOT NULL AUTO_INCREMENT, type VARCHAR(50), quant INT, color VARCHAR(25), PRIMARY KEY(id));
Query OK, 0 rows affected, 1 warning (0.27 sec)
singlestore> SHOW TABLES IN playground;
+----------------------+
| Tables_in_playground |
+----------------------+
| equipment |
+----------------------+
1 row in set (0.00 sec)
singlestore> INSERT INTO playground.equipment (type, quant, color) VALUES ("slide", 2, "blue");
Query OK, 1 row affected (1.15 sec)
singlestore> SELECT * FROM playground.equipment;
+----+-------+-------+-------+
| id | type | quant | color |
+----+-------+-------+-------+
| 1 | slide | 2 | blue |
+----+-------+-------+-------+
1 row in set (0.14 sec)
singlestore> exit
Bye
Now, we are ready to backup the database.
Prepare Backend
We are going to store our backed up data into a GCS bucket. We have to create a Secret with necessary credentials and a BackupStorage CR to use this backend. If you want to use a different backend, please read the respective backend configuration doc from here.
Create Secret:
Let’s create a secret called gcs-secret with access credentials to our desired GCS bucket,
$ echo -n '<your-project-id>' > GOOGLE_PROJECT_ID
$ cat /path/to/downloaded-sa-key.json > GOOGLE_SERVICE_ACCOUNT_JSON_KEY
$ kubectl create secret generic -n demo gcs-secret \
--from-file=./GOOGLE_PROJECT_ID \
--from-file=./GOOGLE_SERVICE_ACCOUNT_JSON_KEY
secret/gcs-secret created
Create BackupStorage:
Now, create a BackupStorage using this secret. Below is the YAML of BackupStorage CR we are going to create,
apiVersion: storage.kubestash.com/v1alpha1
kind: BackupStorage
metadata:
name: gcs-storage
namespace: demo
spec:
storage:
provider: gcs
gcs:
bucket: kubestash-qa
prefix: demo
secretName: gcs-secret
usagePolicy:
allowedNamespaces:
from: All
default: true
deletionPolicy: Delete
Let’s create the BackupStorage we have shown above,
$ kubectl apply -f https://github.com/kubedb/docs/raw/v2024.11.18/docs/guides/singlestore/backup/kubestash/logical/examples/backupstorage.yaml
backupstorage.storage.kubestash.com/gcs-storage created
Now, we are ready to backup our database to our desired backend.
Create RetentionPolicy:
Now, let’s create a RetentionPolicy to specify how the old Snapshots should be cleaned up.
Below is the YAML of the RetentionPolicy object that we are going to create,
apiVersion: storage.kubestash.com/v1alpha1
kind: RetentionPolicy
metadata:
name: demo-retention
namespace: demo
spec:
default: true
failedSnapshots:
last: 2
maxRetentionPeriod: 2mo
successfulSnapshots:
last: 5
usagePolicy:
allowedNamespaces:
from: All
Let’s create the above RetentionPolicy,
$ kubectl apply -f https://github.com/kubedb/docs/raw/v2024.11.18/docs/guides/singlestore/backup/kubestash/logical/examples/retentionpolicy.yaml
retentionpolicy.storage.kubestash.com/demo-retention created
Backup
We have to create a BackupConfiguration targeting respective sdb-sample SingleStore database. Then, KubeStash will create a CronJob for each session to take periodic backup of that database.
At first, we need to create a secret with a Restic password for backup data encryption.
Create Secret:
Let’s create a secret called encrypt-secret with the Restic password,
$ echo -n 'changeit' > RESTIC_PASSWORD
$ kubectl create secret generic -n demo encrypt-secret \
--from-file=./RESTIC_PASSWORD \
secret "encrypt-secret" created
Create BackupConfiguration:
Below is the YAML for BackupConfiguration CR to backup the sdb-sample database that we have deployed earlier,
apiVersion: core.kubestash.com/v1alpha1
kind: BackupConfiguration
metadata:
name: sample-sdb-backup
namespace: demo
spec:
target:
apiGroup: kubedb.com
kind: Singlestore
namespace: demo
name: sdb-sample
backends:
- name: gcs-backend
storageRef:
namespace: demo
name: gcs-storage
retentionPolicy:
name: demo-retention
namespace: demo
sessions:
- name: frequent-backup
scheduler:
schedule: "*/5 * * * *"
jobTemplate:
backoffLimit: 1
repositories:
- name: gcs-sdb-repo
backend: gcs-backend
directory: /singlestore
encryptionSecret:
name: encrypt-secret
namespace: demo
addon:
name: singlestore-addon
tasks:
- name: logical-backup
.spec.sessions[*].schedulespecifies that we want to backup the database at5 minutesinterval..spec.targetrefers to the targetedsdb-sampleSigleStore database that we created earlier.
Let’s create the BackupConfiguration CR that we have shown above,
$ kubectl apply -f https://github.com/kubedb/docs/raw/v2024.11.18/docs/guides/singlestore/backup/kubestash/logical/examples/backupconfiguration.yaml
backupconfiguration.core.kubestash.com/sample-sdb-backup created
Verify Backup Setup Successful
If everything goes well, the phase of the BackupConfiguration should be Ready. The Ready phase indicates that the backup setup is successful. Let’s verify the Phase of the BackupConfiguration,
$ kubectl get backupconfiguration -n demo
NAME PHASE PAUSED AGE
sample-sdb-backup Ready 2m50s
Additionally, we can verify that the Repository specified in the BackupConfiguration has been created using the following command,
$ kubectl get repo -n demo
NAME INTEGRITY SNAPSHOT-COUNT SIZE PHASE LAST-SUCCESSFUL-BACKUP AGE
gcs-sdb-repo 0 0 B Ready 3m
KubeStash keeps the backup for Repository YAMLs. If we navigate to the GCS bucket, we will see the Repository YAML stored in the demo/singlestore directory.
Verify CronJob:
It will also create a CronJob with the schedule specified in spec.sessions[*].scheduler.schedule field of BackupConfiguration CR.
Verify that the CronJob has been created using the following command,
$ kubectl get cronjob -n demo
NAME SCHEDULE SUSPEND ACTIVE LAST SCHEDULE AGE
trigger-sample-sdb-backup-frequent-backup */5 * * * * 0 2m45s 3m25s
Verify BackupSession:
KubeStash triggers an instant backup as soon as the BackupConfiguration is ready. After that, backups are scheduled according to the specified schedule.
$ kubectl get backupsession -n demo -w
NAME INVOKER-TYPE INVOKER-NAME PHASE DURATION AGE
sample-sdb-backup-frequent-backup-1724065200 BackupConfiguration sdb-sample-backup Succeeded 7m22s
We can see from the above output that the backup session has succeeded. Now, we are going to verify whether the backed up data has been stored in the backend.
Verify Backup:
Once a backup is complete, KubeStash will update the respective Repository CR to reflect the backup. Check that the repository sample-sdb-backup has been updated by the following command,
$ kubectl get repository -n demo gcs-sdb-repo
NAME INTEGRITY SNAPSHOT-COUNT SIZE PHASE LAST-SUCCESSFUL-BACKUP AGE
gcs-sdb-repo true 1 806 B Ready 8m27s 9m18s
At this moment we have one Snapshot. Run the following command to check the respective Snapshot which represents the state of a backup run for an application.
$ kubectl get snapshots -n demo -l=kubestash.com/repo-name=gcs-demo-repo
NAME REPOSITORY SESSION SNAPSHOT-TIME DELETION-POLICY PHASE AGE
gcs-sdb-repo-sample-sdb-backup-frequent-backup-1724065200 sample-sdb-backup frequent-backup 2024-01-23T13:10:54Z Delete Succeeded 16h
Note: KubeStash creates a
Snapshotwith the following labels:
kubestash.com/app-ref-kind: <target-kind>kubestash.com/app-ref-name: <target-name>kubestash.com/app-ref-namespace: <target-namespace>kubestash.com/repo-name: <repository-name>These labels can be used to watch only the
Snapshots related to our target Database orRepository.
If we check the YAML of the Snapshot, we can find the information about the backed up components of the Database.
$ kubectl get snapshots -n demo gcs-sdb-repo-sample-sdb-backup-frequent-backup-1724065200 -oyaml
apiVersion: storage.kubestash.com/v1alpha1
kind: Snapshot
metadata:
creationTimestamp: "2024-08-19T12:10:00Z"
finalizers:
- kubestash.com/cleanup
generation: 1
labels:
kubestash.com/app-ref-kind: Singlestore
kubestash.com/app-ref-name: sdb-sample
kubestash.com/app-ref-namespace: demo
kubestash.com/repo-name: gcs-sdb-repo
annotations:
kubedb.com/db-version: 8.7.10
name: gcs-sdb-repo-sample-sdb-backup-frequent-backup-1724065200
namespace: demo
ownerReferences:
- apiVersion: storage.kubestash.com/v1alpha1
blockOwnerDeletion: true
controller: true
kind: Repository
name: gcs-sdb-repo
uid: 036a2605-0dcc-43bd-a921-363d5c3e8cf0
resourceVersion: "33742"
uid: d7f14919-4c31-4b46-84e9-0a75f303ad92
spec:
appRef:
apiGroup: kubedb.com
kind: Singlestore
name: sdb-sample
namespace: demo
backupSession: sample-sdb-backup-frequent-backup-1724065200
deletionPolicy: Delete
repository: gcs-sdb-repo
session: frequent-backup
snapshotID: 01J6V4P4J0R33C8EG0JWK82118
type: FullBackup
version: v1
status:
components:
dump:
driver: Restic
duration: 7.472499073s
integrity: true
path: repository/v1/frequent-backup/dump
phase: Succeeded
resticStats:
- hostPath: dumpfile.sql
id: fbab3af5c38f51b7aa9096799d8ce4b71ea0092dd8297526fed0adbd9f62f3f1
size: 3.657 MiB
uploaded: 1.036 MiB
size: 1.456 MiB
...
KubeStash uses the
mysqldumpcommand to take backups of target SingleStore databases. Therefore, the component name for logical backups is set asdump.
Now, if we navigate to the GCS bucket, we will see the backed up data stored in the demo/singlestore/repository/v1/frequent-backup/dump directory. KubeStash also keeps the backup for Snapshot YAMLs, which can be found in the demo/dep/snapshots directory.
Note: KubeStash stores all dumped data encrypted in the backup directory, meaning it remains unreadable until decrypted.
Restore
In this section, we are going to restore the database from the backup we have taken in the previous section. We are going to deploy a new database and initialize it from the backup.
Deploy Restored Database:
Now, we have to deploy the restored database similarly as we have deployed the original sdb-sample database. However, this time there will be the following differences:
- We are going to specify
.spec.init.waitForInitialRestorefield that tells KubeDB to wait for first restore to complete before marking this database is ready to use.
Below is the YAML for SingleStore CRD we are going deploy to initialize from backup,
apiVersion: kubedb.com/v1alpha2
kind: Singlestore
metadata:
name: restored-singlestore
namespace: demo
spec:
version: "8.7.10"
init:
waitForInitialRestore: true
topology:
aggregator:
replicas: 2
podTemplate:
spec:
containers:
- name: singlestore
resources:
limits:
memory: "2Gi"
cpu: "600m"
requests:
memory: "2Gi"
cpu: "600m"
storage:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
leaf:
replicas: 3
podTemplate:
spec:
containers:
- name: singlestore
resources:
limits:
memory: "2Gi"
cpu: "600m"
requests:
memory: "2Gi"
cpu: "600m"
storage:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
licenseSecret:
name: license-secret
storageType: Durable
deletionPolicy: WipeOut
Let’s create the above database,
$ kubectl apply -f https://github.com/kubedb/docs/raw/v2024.11.18/docs/guides/singlestore/backup/kubestash/logical/examples/restored-singlestore.yaml
singlestore.kubedb.com/restored-singlestore created
If you check the database status, you will see it is stuck in Provisioning state.
$ kubectl get singlestore -n demo restored-singlestore
NAME VERSION STATUS AGE
restored-singlestore 8.7.10 Provisioning 61s
Create RestoreSession:
Now, we need to create a RestoreSession CRD pointing to targeted SingleStore database.
Below, is the contents of YAML file of the RestoreSession object that we are going to create to restore backed up data into the newly created database provisioned by SingleStore object named restored-singlestore.
apiVersion: core.kubestash.com/v1alpha1
kind: RestoreSession
metadata:
name: restore-sample-singlestore
namespace: demo
spec:
target:
apiGroup: kubedb.com
kind: Singlestore
namespace: demo
name: restored-singlestore
dataSource:
repository: gcs-singlestore-repo
snapshot: latest
encryptionSecret:
name: encrypt-secret
namespace: demo
addon:
name: singlestore-addon
tasks:
- name: logical-backup-restore
Here,
.spec.targetrefers to the newly createdrestored-singlestoreSingleStore object to where we want to restore backup data..spec.dataSource.repositoryspecifies the Repository object that holds the backed up data..spec.dataSource.snapshotspecifies to restore from latestSnapshot.
Let’s create the RestoreSession CRD object we have shown above,
$ kubectl apply -f https://github.com/kubedb/docs/raw/v2024.11.18/docs/guides/singlestore/backup/kubestash/logical/examples/restoresession.yaml
restoresession.core.kubestash.com/sample-singlestore-restore created
Once, you have created the RestoreSession object, KubeStash will create restore Job. Run the following command to watch the phase of the RestoreSession object,
$ watch kubectl get restoresession -n demo
Every 2.0s: kubectl get restores... AppsCode-PC-03: Wed Sep 20 10:44:05 2024
NAME REPOSITORY FAILURE-POLICY PHASE DURATION AGE
sample-restore gcs-demo-repo Succeeded 3s 53s
The Succeeded phase means that the restore process has been completed successfully.
Verify Restored Data:
In this section, we are going to verify whether the desired data has been restored successfully. We are going to connect to the database server and check whether the database and the table we created earlier in the original database are restored.
At first, check if the database has gone into Ready state by the following command,
$ kubectl get singlestore -n demo restored-singlestore
NAME VERSION STATUS AGE
restored-singlestore 8.7.10 Ready 34m
Now, find out the database Pod by the following command,
$ kubectl get pods -n demo --selector="app.kubernetes.io/instance=restored-singlestore"
NAME READY STATUS RESTARTS AGE
restored-singlestore-aggregator-0 2/2 Running 0 34m
restored-singlestore-aggregator-1 2/2 Running 0 34m
restored-singlestore-leaf-0 2/2 Running 0 34m
restored-singlestore-leaf-1 2/2 Running 0 34m
restored-singlestore-leaf-2 2/2 Running 0 34m
And then copy the user name and password of the root user to access into memsql shell.
$ kubectl get secret -n demo restored-singlestore-root-cred -o jsonpath='{.data.username}'| base64 -d
root⏎
kubectl get secret -n demo restored-singlestore-root-cred -o jsonpath='{.data.password}'| base64 -d
QMm1hi0T*7QFz_yh⏎
Now, Lets exec into the any aggregator Pod to enter into mysql shell and create a database and a table,
$ kubectl exec -it -n demo restored-singlestore-aggregator-0 -- singlestore --user=root --password=QMm1hi0T*7QFz_yh
Defaulted container "singlestore" out of: singlestore, singlestore-coordinator, singlestore-init (init)
singlestore-client: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 300070
Server version: 5.7.32 SingleStoreDB source distribution (compatible; MySQL Enterprise & MySQL Commercial)
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
singlestore> show databases;
+--------------------+
| Database |
+--------------------+
| cluster |
| demo |
| det |
| information_schema |
| memsql |
| playground |
| singlestore_health |
| test |
+--------------------+
8 rows in set (0.00 sec)
singlestore> SHOW TABLES IN playground;
+----------------------+
| Tables_in_playground |
+----------------------+
| equipment |
+----------------------+
1 row in set (0.00 sec)
singlestore> SELECT * FROM playground.equipment;
+----+-------+-------+-------+
| id | type | quant | color |
+----+-------+-------+-------+
| 1 | slide | 2 | blue |
+----+-------+-------+-------+
1 row in set (0.14 sec)
singlestore> exit
Bye
So, from the above output, we can see that the playground database and the equipment table we have created earlier in the original database and now, they are restored successfully.
Cleanup
To cleanup the Kubernetes resources created by this tutorial, run:
kubectl delete backupconfigurations.core.kubestash.com -n demo sample-sdb-backup
kubectl delete restoresessions.core.kubestash.com -n demo sample-restore
kubectl delete retentionpolicies.storage.kubestash.com -n demo demo-retention
kubectl delete backupstorage -n demo gcs-storage
kubectl delete secret -n demo gcs-secret
kubectl delete secret -n demo encrypt-secret
kubectl delete my -n demo restored-singlestore
kubectl delete my -n demo sdb-sample