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New to KubeDB? Please start here.
OpenSearch QuickStart
This tutorial will show you how to use KubeDB to run an OpenSearch database.
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 using kind.Now, install the KubeDB operator in your cluster following the steps here.
Elasticsearch has many distributions like
ElasticStack,OpenSearch,SearchGuard,OpenDistroetc. KubeDB provides all of these distribution’s support under the Elasticsearch CR of KubeDB. So, in this tutorial we will deploy OpenSearch with the help of KubeDB managed Elasticsearch CR.StorageClass is required for CRD specification. Check the available StorageClass in cluster.
$ kubectl get storageclass
NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE
standard (default) rancher.io/local-path Delete WaitForFirstConsumer false 11h
Here, we have standard StorageClass in our cluster from Local Path Provisioner.
To keep things isolated, this tutorial uses a separate namespace called demo throughout this tutorial.
$ kubectl create namespace demo
namespace/demo created
$ kubectl get namespace
NAME STATUS AGE
demo Active 9s
Note: YAML files used in this tutorial are stored in guides/elasticsearch/opensearch/quickstart/yamls folder in GitHub repository kubedb/docs.
We have designed this tutorial to demonstrate a production setup of KubeDB managed OpenSearch. If you just want to try out KubeDB, you can bypass some of the safety features following the tips here.
Find Available Versions
When you install the KubeDB operator, it registers a CRD named ElasticsearchVersion. The installation process comes with a set of tested ElasticsearchVersion objects. Let’s check available ElasticsearchVersions by following command,
$ kubectl get elasticsearchversions
NAME VERSION DISTRIBUTION DB_IMAGE DEPRECATED AGE
kubedb-xpack-7.12.0 7.12.0 KubeDB kubedb/elasticsearch:7.12.0-xpack-v2021.08.23 17h
kubedb-xpack-7.13.2 7.13.2 KubeDB kubedb/elasticsearch:7.13.2-xpack-v2021.08.23 17h
kubedb-xpack-7.14.0 7.14.0 KubeDB kubedb/elasticsearch:7.14.0-xpack-v2021.08.23 17h
kubedb-xpack-7.16.2 7.16.2 KubeDB kubedb/elasticsearch:7.16.2-xpack-v2021.12.24 17h
kubedb-xpack-7.9.1 7.9.1 KubeDB kubedb/elasticsearch:7.9.1-xpack-v2021.08.23 17h
opendistro-1.0.2 7.0.1 OpenDistro amazon/opendistro-for-elasticsearch:1.0.2 17h
opendistro-1.0.2-v1 7.0.1 OpenDistro amazon/opendistro-for-elasticsearch:1.0.2 17h
opendistro-1.1.0 7.1.1 OpenDistro amazon/opendistro-for-elasticsearch:1.1.0 17h
opendistro-1.1.0-v1 7.1.1 OpenDistro amazon/opendistro-for-elasticsearch:1.1.0 17h
opendistro-1.10.1 7.9.1 OpenDistro amazon/opendistro-for-elasticsearch:1.10.1 17h
opendistro-1.11.0 7.9.1 OpenDistro amazon/opendistro-for-elasticsearch:1.10.1 17h
opendistro-1.12.0 7.10.0 OpenDistro amazon/opendistro-for-elasticsearch:1.12.0 17h
opendistro-1.13.2 7.10.2 OpenDistro amazon/opendistro-for-elasticsearch:1.13.2 17h
opendistro-1.2.1 7.2.1 OpenDistro amazon/opendistro-for-elasticsearch:1.2.1 17h
opendistro-1.2.1-v1 7.2.1 OpenDistro amazon/opendistro-for-elasticsearch:1.2.1 17h
opendistro-1.3.0 7.3.2 OpenDistro amazon/opendistro-for-elasticsearch:1.3.0 17h
opendistro-1.3.0-v1 7.3.2 OpenDistro amazon/opendistro-for-elasticsearch:1.3.0 17h
opendistro-1.4.0 7.4.2 OpenDistro amazon/opendistro-for-elasticsearch:1.4.0 17h
opendistro-1.4.0-v1 7.4.2 OpenDistro amazon/opendistro-for-elasticsearch:1.4.0 17h
opendistro-1.6.0 7.6.1 OpenDistro amazon/opendistro-for-elasticsearch:1.6.0 17h
opendistro-1.6.0-v1 7.6.1 OpenDistro amazon/opendistro-for-elasticsearch:1.6.0 17h
opendistro-1.7.0 7.6.1 OpenDistro amazon/opendistro-for-elasticsearch:1.7.0 17h
opendistro-1.7.0-v1 7.6.1 OpenDistro amazon/opendistro-for-elasticsearch:1.7.0 17h
opendistro-1.8.0 7.7.0 OpenDistro amazon/opendistro-for-elasticsearch:1.8.0 17h
opendistro-1.8.0-v1 7.7.0 OpenDistro amazon/opendistro-for-elasticsearch:1.8.0 17h
opendistro-1.9.0 7.8.0 OpenDistro amazon/opendistro-for-elasticsearch:1.9.0 17h
opendistro-1.9.0-v1 7.8.0 OpenDistro amazon/opendistro-for-elasticsearch:1.9.0 17h
opensearch-1.1.0 1.1.0 OpenSearch opensearchproject/opensearch:1.1.0 17h
opensearch-1.2.2 1.2.2 OpenSearch opensearchproject/opensearch:1.2.2 17h
searchguard-6.8.1 6.8.1 SearchGuard floragunncom/sg-elasticsearch:6.8.1-oss-25.1 17h
searchguard-6.8.1-v1 6.8.1 SearchGuard floragunncom/sg-elasticsearch:6.8.1-oss-25.1 17h
searchguard-7.0.1 7.0.1 SearchGuard floragunncom/sg-elasticsearch:7.0.1-oss-35.0.0 17h
searchguard-7.0.1-v1 7.0.1 SearchGuard floragunncom/sg-elasticsearch:7.0.1-oss-35.0.0 17h
searchguard-7.1.1 7.1.1 SearchGuard floragunncom/sg-elasticsearch:7.1.1-oss-35.0.0 17h
searchguard-7.1.1-v1 7.1.1 SearchGuard floragunncom/sg-elasticsearch:7.1.1-oss-35.0.0 17h
searchguard-7.10.2 7.10.2 SearchGuard floragunncom/sg-elasticsearch:7.10.2-oss-49.0.0 17h
searchguard-7.14.2 7.14.2 SearchGuard floragunncom/sg-elasticsearch:7.14.2-52.3.0 17h
searchguard-7.3.2 7.3.2 SearchGuard floragunncom/sg-elasticsearch:7.3.2-oss-37.0.0 17h
searchguard-7.5.2 7.5.2 SearchGuard floragunncom/sg-elasticsearch:7.5.2-oss-40.0.0 17h
searchguard-7.5.2-v1 7.5.2 SearchGuard floragunncom/sg-elasticsearch:7.5.2-oss-40.0.0 17h
searchguard-7.8.1 7.8.1 SearchGuard floragunncom/sg-elasticsearch:7.8.1-oss-43.0.0 17h
searchguard-7.9.3 7.9.3 SearchGuard floragunncom/sg-elasticsearch:7.9.3-oss-47.1.0 17h
xpack-6.8.10-v1 6.8.10 ElasticStack elasticsearch:6.8.10 17h
xpack-6.8.16 6.8.16 ElasticStack elasticsearch:6.8.16 17h
xpack-6.8.22 6.8.22 ElasticStack elasticsearch:6.8.22 17h
xpack-7.0.1-v1 7.0.1 ElasticStack elasticsearch:7.0.1 17h
xpack-7.1.1-v1 7.1.1 ElasticStack elasticsearch:7.1.1 17h
xpack-7.12.0 7.12.0 ElasticStack elasticsearch:7.12.0 17h
xpack-7.12.0-v1 7.12.0 ElasticStack elasticsearch:7.12.0 17h
xpack-7.13.2 7.13.2 ElasticStack elasticsearch:7.13.2 17h
xpack-7.14.0 7.14.0 ElasticStack elasticsearch:7.14.0 17h
xpack-7.16.2 7.16.2 ElasticStack elasticsearch:7.16.2 17h
xpack-7.2.1-v1 7.2.1 ElasticStack elasticsearch:7.2.1 17h
xpack-7.3.2-v1 7.3.2 ElasticStack elasticsearch:7.3.2 17h
xpack-7.4.2-v1 7.4.2 ElasticStack elasticsearch:7.4.2 17h
xpack-7.5.2-v1 7.5.2 ElasticStack elasticsearch:7.5.2 17h
xpack-7.6.2-v1 7.6.2 ElasticStack elasticsearch:7.6.2 17h
xpack-7.7.1-v1 7.7.1 ElasticStack elasticsearch:7.7.1 17h
xpack-7.8.0-v1 7.8.0 ElasticStack elasticsearch:7.8.0 17h
xpack-7.9.1-v1 7.9.1 ElasticStack elasticsearch:7.9.1 17h
xpack-7.9.1-v2 7.9.1 ElasticStack elasticsearch:7.9.1 17h
Notice the DEPRECATED column. Here, true means that this ElasticsearchVersion is deprecated for the current KubeDB version. KubeDB will not work for deprecated ElasticsearchVersion.
In this tutorial, we will use opensearch-1.2.2 ElasticsearchVersion CR to create an OpenSearch cluster.
Note: An image with a higher modification tag will have more features and fixes than an image with a lower modification tag. Hence, it is recommended to use ElasticsearchVersion CRD with the highest modification tag to take advantage of the latest features. For example, we are using
opensearch-1.2.2overopensearch-1.1.0.
Create an OpenSearch Cluster
The KubeDB operator implements an Elasticsearch CRD to define the specification of an OpenSearch database.
Here is the yaml we will use for this tutorial:
apiVersion: kubedb.com/v1alpha2
kind: Elasticsearch
metadata:
name: sample-opensearch
namespace: demo
spec:
version: opensearch-1.2.2
enableSSL: true
replicas: 3
storageType: Durable
storage:
storageClassName: "standard"
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
terminationPolicy: DoNotTerminate
Here,
spec.version- is the name of the ElasticsearchVersion CR. Here, we are usingopensearch-1.2.2version.spec.enableSSL- specifies whether the HTTP layer is secured with certificates or not.spec.replicas- specifies the number of OpenSearch nodes.spec.storageType- specifies the type of storage that will be used for OpenSearch database. It can beDurableorEphemeral. The default value of this field isDurable. IfEphemeralis used then KubeDB will create the OpenSearch database usingEmptyDirvolume. In this case, you don’t have to specifyspec.storagefield. This is useful for testing purposes.spec.storagespecifies the StorageClass of PVC dynamically allocated to store data for this database. This storage spec will be passed to the StatefulSet created by the KubeDB operator to run database pods. You can specify any StorageClass available in your cluster with appropriate resource requests. If you don’t specifyspec.storageType: Ephemeral, then this field is required.spec.terminationPolicyspecifies what KubeDB should do when a user try to delete the operation of Elasticsearch CR. Termination policyDoNotTerminateprevents a user from deleting this object if the admission webhook is enabled.
Note:
spec.storagesection is used to create PVC for database pod. It will create PVC with storage size specified in thestorage.resources.requestsfield. Don’t specifylimitshere. PVC does not get resized automatically.
Let’s apply the yaml that is shown above:
$ kubectl apply -f https://github.com/kubedb/docs/raw/v2022.12.24-rc.1/docs/guides/elasticsearch/opensearch/quickstart/yamls/opensearch.yaml
elasticsearch.kubedb.com/es-quickstart created
Wait for few minutes until the STATUS will go from Provisioning to Ready. Once the STATUS is Ready, you are ready to use the database.
$ kubectl get elasticsearch -n demo -w
NAME VERSION STATUS AGE
sample-opensearch opensearch-1.2.2 Provisioning 49s
... ...
$ kubectl get elasticsearch -n demo -w
NAME VERSION STATUS AGE
sample-opensearch opensearch-1.2.2 Ready 5m4s
Describe the object to observe the progress if something goes wrong or the status is not changing for a long period of time:
$ kubectl describe elasticsearch -n demo sample-opensearch
Name: sample-opensearch
Namespace: demo
Labels: <none>
Annotations: <none>
API Version: kubedb.com/v1alpha2
Kind: Elasticsearch
Metadata:
Creation Timestamp: 2022-02-15T07:00:21Z
Finalizers:
kubedb.com
Generation: 1
Resource Version: 84343
UID: 20c388a6-54b1-4c0d-891b-879ec8e2a8c6
Spec:
Auth Secret:
Name: sample-opensearch-admin-cred
Enable SSL: true
Internal Users:
Admin:
Backend Roles:
admin
Reserved: true
Secret Name: sample-opensearch-admin-cred
Kibanaro:
Secret Name: sample-opensearch-kibanaro-cred
Kibanaserver:
Reserved: true
Secret Name: sample-opensearch-kibanaserver-cred
Logstash:
Secret Name: sample-opensearch-logstash-cred
Readall:
Secret Name: sample-opensearch-readall-cred
Snapshotrestore:
Secret Name: sample-opensearch-snapshotrestore-cred
Kernel Settings:
Privileged: true
Sysctls:
Name: vm.max_map_count
Value: 262144
Pod Template:
Controller:
Metadata:
Spec:
Affinity:
Pod Anti Affinity:
Preferred During Scheduling Ignored During Execution:
Pod Affinity Term:
Label Selector:
Match Labels:
app.kubernetes.io/instance: sample-opensearch
app.kubernetes.io/managed-by: kubedb.com
app.kubernetes.io/name: elasticsearches.kubedb.com
Namespaces:
demo
Topology Key: kubernetes.io/hostname
Weight: 100
Pod Affinity Term:
Label Selector:
Match Labels:
app.kubernetes.io/instance: sample-opensearch
app.kubernetes.io/managed-by: kubedb.com
app.kubernetes.io/name: elasticsearches.kubedb.com
Namespaces:
demo
Topology Key: failure-domain.beta.kubernetes.io/zone
Weight: 50
Container Security Context:
Capabilities:
Add:
IPC_LOCK
SYS_RESOURCE
Privileged: false
Resources:
Limits:
Memory: 1Gi
Requests:
Cpu: 500m
Memory: 1Gi
Service Account Name: sample-opensearch
Replicas: 3
Storage:
Access Modes:
ReadWriteOnce
Resources:
Requests:
Storage: 1Gi
Storage Class Name: standard
Storage Type: Durable
Termination Policy: DoNotTerminate
Tls:
Certificates:
Alias: ca
Private Key:
Encoding: PKCS8
Secret Name: sample-opensearch-ca-cert
Subject:
Organizations:
kubedb
Alias: transport
Private Key:
Encoding: PKCS8
Secret Name: sample-opensearch-transport-cert
Subject:
Organizations:
kubedb
Alias: admin
Private Key:
Encoding: PKCS8
Secret Name: sample-opensearch-admin-cert
Subject:
Organizations:
kubedb
Alias: http
Private Key:
Encoding: PKCS8
Secret Name: sample-opensearch-http-cert
Subject:
Organizations:
kubedb
Alias: archiver
Private Key:
Encoding: PKCS8
Secret Name: sample-opensearch-archiver-cert
Subject:
Organizations:
kubedb
Version: opensearch-1.2.2
Status:
Conditions:
Last Transition Time: 2022-02-15T07:00:21Z
Message: The KubeDB operator has started the provisioning of Elasticsearch: demo/sample-opensearch
Reason: DatabaseProvisioningStartedSuccessfully
Status: True
Type: ProvisioningStarted
Last Transition Time: 2022-02-15T07:00:44Z
Message: All desired replicas are ready.
Reason: AllReplicasReady
Status: True
Type: ReplicaReady
Last Transition Time: 2022-02-15T07:01:35Z
Message: The Elasticsearch: demo/sample-opensearch is accepting client requests.
Observed Generation: 1
Reason: DatabaseAcceptingConnectionRequest
Status: True
Type: AcceptingConnection
Last Transition Time: 2022-02-15T07:01:35Z
Message: The Elasticsearch: demo/sample-opensearch is ready.
Observed Generation: 1
Reason: ReadinessCheckSucceeded
Status: True
Type: Ready
Last Transition Time: 2022-02-15T07:01:35Z
Message: The Elasticsearch: demo/sample-opensearch is successfully provisioned.
Observed Generation: 1
Reason: DatabaseSuccessfullyProvisioned
Status: True
Type: Provisioned
Observed Generation: 1
Phase: Ready
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Successful 56m KubeDB Operator Successfully governing service
Normal Successful 56m KubeDB Operator Successfully governing service
KubeDB Operator Generated Resources
after the deployment, the operator creates the following resources:
$ kubectl get all,secret -n demo -l 'app.kubernetes.io/instance=sample-opensearch'
NAME READY STATUS RESTARTS AGE
pod/sample-opensearch-0 1/1 Running 0 23m
pod/sample-opensearch-1 1/1 Running 0 23m
pod/sample-opensearch-2 1/1 Running 0 23m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/sample-opensearch ClusterIP 10.96.29.157 <none> 9200/TCP 23m
service/sample-opensearch-master ClusterIP None <none> 9300/TCP 23m
service/sample-opensearch-pods ClusterIP None <none> 9200/TCP 23m
NAME READY AGE
statefulset.apps/sample-opensearch 3/3 23m
NAME TYPE VERSION AGE
appbinding.appcatalog.appscode.com/sample-opensearch kubedb.com/elasticsearch 1.2.2 23m
NAME TYPE DATA AGE
secret/sample-opensearch-admin-cert kubernetes.io/tls 3 23m
secret/sample-opensearch-admin-cred kubernetes.io/basic-auth 2 23m
secret/sample-opensearch-archiver-cert kubernetes.io/tls 3 23m
secret/sample-opensearch-ca-cert kubernetes.io/tls 2 23m
secret/sample-opensearch-config Opaque 3 23m
secret/sample-opensearch-http-cert kubernetes.io/tls 3 23m
secret/sample-opensearch-kibanaro-cred kubernetes.io/basic-auth 2 23m
secret/sample-opensearch-kibanaserver-cred kubernetes.io/basic-auth 2 23m
secret/sample-opensearch-logstash-cred kubernetes.io/basic-auth 2 23m
secret/sample-opensearch-readall-cred kubernetes.io/basic-auth 2 23m
secret/sample-opensearch-snapshotrestore-cred kubernetes.io/basic-auth 2 23m
secret/sample-opensearch-transport-cert kubernetes.io/tls 3 23m
StatefulSet- a StatefulSet named after the OpenSearch instance.Services- 3 services are generated for each OpenSearch database.{OpenSearch-Name}- the client service which is used to connect to the database. It points to theingestnodes.{OpenSearch-Name}-master- the master service which is used to connect to the master nodes. It is a headless service.{OpenSearch-Name}-pods- the node discovery service which is used by the OpenSearch nodes to communicate each other. It is a headless service.
AppBinding- an AppBinding which hold the connect information for the database.Secrets- 3 types of secrets are generated for each OpenSearch database.{OpenSearch-Name}-{username}-cred- the auth secrets which hold theusernameandpasswordfor the OpenSearch users.{OpenSearch-Name}-{alias}-cert- the certificate secrets which holdtls.crt,tls.key, andca.crtfor configuring the OpenSearch database.{OpenSearch-Name}-config- the default configuration secret created by the operator.
Insert Sample Data
In this section, we are going to create few indexes in the deployed OpenSearch. At first, we are going to port-forward the respective Service so that we can connect with the database from our local machine. Then, we are going to insert some data into the OpenSearch.
Port-forward the Service
KubeDB will create few Services to connect with the database. Let’s see the Services created by KubeDB for our OpenSearch,
$ kubectl get service -n demo
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
sample-opensearch ClusterIP 10.48.14.99 <none> 9200/TCP 4m33s
sample-opensearch-master ClusterIP None <none> 9300/TCP 4m33s
sample-opensearch-pods ClusterIP None <none> 9200/TCP 4m33s
Here, we are going to use the sample-opensearch Service to connect with the database. Now, let’s port-forward the sample-opensearch Service.
# Port-forward the service to local machine
$ kubectl port-forward -n demo svc/sample-opensearch 9200
Forwarding from 127.0.0.1:9200 -> 9200
Forwarding from [::1]:9200 -> 9200
Export the Credentials
KubeDB will create some Secrets for the database. Let’s check which Secrets have been created by KubeDB for our sample-opensearch.
$ kubectl get secret -n demo | grep sample-opensearch
sample-opensearch-admin-cert kubernetes.io/tls 3 10m
sample-opensearch-admin-cred kubernetes.io/basic-auth 2 10m
sample-opensearch-ca-cert kubernetes.io/tls 2 10m
sample-opensearch-config Opaque 3 10m
sample-opensearch-kibanaro-cred kubernetes.io/basic-auth 2 10m
sample-opensearch-kibanaserver-cred kubernetes.io/basic-auth 2 10m
sample-opensearch-logstash-cred kubernetes.io/basic-auth 2 10m
sample-opensearch-readall-cred kubernetes.io/basic-auth 2 10m
sample-opensearch-snapshotrestore-cred kubernetes.io/basic-auth 2 10m
sample-opensearch-token-zbn46 kubernetes.io/service-account-token 3 10m
sample-opensearch-transport-cert kubernetes.io/tls 3 10m
Now, we can connect to the database with any of these secret that have the prefix cred. Here, we are using sample-opensearch-admin-cred which contains the admin level credentials to connect with the database.
Accessing Database Through CLI
To access the database through CLI, we have to get the credentials to access. Let’s export the credentials as environment variable to our current shell :
$ kubectl get secret -n demo sample-opensearch-admin-cred -o jsonpath='{.data.username}' | base64 -d
admin
$ kubectl get secret -n demo sample-opensearch-admin-cred -o jsonpath='{.data.password}' | base64 -d
9aHT*ZhEK_qjPS~v
Then login and check the health of our OpenSearch database.
$ curl -XGET -k -u 'admin:9aHT*ZhEK_qjPS~v' "https://localhost:9200/_cluster/health?pretty"
{
"cluster_name" : "sample-opensearch",
"status" : "green",
"timed_out" : false,
"number_of_nodes" : 3,
"number_of_data_nodes" : 3,
"discovered_master" : true,
"active_primary_shards" : 1,
"active_shards" : 3,
"relocating_shards" : 0,
"initializing_shards" : 0,
"unassigned_shards" : 0,
"delayed_unassigned_shards" : 0,
"number_of_pending_tasks" : 0,
"number_of_in_flight_fetch" : 0,
"task_max_waiting_in_queue_millis" : 0,
"active_shards_percent_as_number" : 100.0
}
Now, insert some data into OpenSearch:
$ curl -XPOST -k --user 'admin:9aHT*ZhEK_qjPS~v' "https://localhost:9200/bands/_doc?pretty" -H 'Content-Type: application/json' -d'
{
"Name": "Backstreet Boys",
"Album": "Millennium",
"Song": "Show Me The Meaning"
}
'
Let’s verify that the index have been created successfully.
$ curl -XGET -k --user 'admin:9aHT*ZhEK_qjPS~v' "https://localhost:9200/_cat/indices?v&s=index&pretty"
health status index uuid pri rep docs.count docs.deleted store.size pri.store.size
green open .opendistro_security ARYAKuVwQsKel2_0Fl3H2w 1 2 9 0 150.3kb 59.9kb
green open bands 1z6Moj6XS12tpDwFPZpqYw 1 1 1 0 10.4kb 5.2kb
green open security-auditlog-2022.02.10 j8-mj4o_SKqCD1g-Nz2PAA 1 1 5 0 183.2kb 91.6kb
Also, let’s verify the data in the indexes:
$ curl -XGET -k --user 'admin:9aHT*ZhEK_qjPS~v' "https://localhost:9200/bands/_search?pretty"
{
"took" : 183,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.0,
"hits" : [
{
"_index" : "bands",
"_type" : "_doc",
"_id" : "V1xW4n4BfiOqQRjndUdv",
"_score" : 1.0,
"_source" : {
"Name" : "Backstreet Boys",
"Album" : "Millennium",
"Song" : "Show Me The Meaning"
}
}
]
}
}
Cleaning up
To cleanup the Kubernetes resources created by this tutorial, run:
$ kubectl patch -n demo elasticsearch sample-opensearch -p '{"spec":{"terminationPolicy":"WipeOut"}}' --type="merge"
elasticsearch.kubedb.com/sample-opensearch patched
$ kubectl delete -n demo es/sample-opensearch
elasticsearch.kubedb.com "sample-opensearch" deleted
$ kubectl delete namespace demo
namespace "demo" deleted
Tips for Testing
If you are just testing some basic functionalities, you might want to avoid additional hassles due to some safety features that are great for the production environment. You can follow these tips to avoid them.
- Use
storageType: Ephemeral. Databases are precious. You might not want to lose your data in your production environment if the database pod fails. So, we recommend to usespec.storageType: Durableand provide storage spec inspec.storagesection. For testing purposes, you can just usespec.storageType: Ephemeral. KubeDB will use emptyDir for storage. You will not require to providespec.storagesection. - Use
terminationPolicy: WipeOut. It is nice to be able to resume the database from the previous one. So, we preserve all yourPVCsand authSecrets. If you don’t want to resume the database, you can just usespec.terminationPolicy: WipeOut. It will clean up every resouce that was created with the Elasticsearch CR. For more details, please visit here.
Next Steps
- Learn about backup & restore OpenSearch database using Stash.
- Monitor your OpenSearch database with KubeDB using
out-of-the-boxbuiltin-Prometheus. - Monitor your OpenSearch database with KubeDB using
out-of-the-boxPrometheus operator. - Want to hack on KubeDB? Check our contribution guidelines.