146 lines
6.1 KiB
Markdown
146 lines
6.1 KiB
Markdown
---
|
|
layout: default
|
|
title: OpenSearch Kubernetes Operator
|
|
nav_order: 210
|
|
---
|
|
|
|
The OpenSearch Kubernetes Operator is an open-source kubernetes operator that helps automate the deployment and provisioning of OpenSearch and OpenSearch Dashboards in a containerized environment. The operator can manage multiple OpenSearch clusters that can be scaled up and down depending on your needs.
|
|
|
|
|
|
## Installation
|
|
|
|
There are two ways to get started with the operator:
|
|
|
|
- [Use a Helm chart](#use-a-helm-chartuse-a-helm).
|
|
- [Use a local installation](#use-a-local-installation).
|
|
|
|
### Use a Helm chart
|
|
|
|
If you use Helm to manage your Kubernetes cluster, you can use the OpenSearch Kubernetes Operator's Cloud Native Computing Foundation (CNCF) project stored in Artifact Hub, a web-based application for finding, installing, and publishing CNCF packages.
|
|
|
|
To begin, log in to your Kubernetes cluster and add the Helm repository (repo) from [Artifact Hub](https://opster.github.io/opensearch-Kubernetes-operator/).
|
|
|
|
```
|
|
helm repo add opensearch-operator https://opster.github.io/opensearch-k8s-operator/
|
|
```
|
|
|
|
Make sure that the repo is included in your Kubernetes cluster.
|
|
|
|
```
|
|
helm repo list | grep opensearch
|
|
```
|
|
|
|
Both the `opensearch` and `opensearch-operator` repos appear in the list of repos.
|
|
|
|
|
|
Install the manager that operates all of the OpenSearch Kubernetes Operator's actions.
|
|
|
|
```
|
|
helm install opensearch-operator opensearch-operator/opensearch-operator
|
|
```
|
|
|
|
After the installation completes, the operator returns information on the deployment with `STATUS: deployed`. Then you can configure and start your [OpenSearch cluster](#deploy-a-new-opensearch-cluster).
|
|
|
|
### Use a local installation
|
|
|
|
If you want to create a new Kubernetes cluster on your existing machine, use a local installation.
|
|
|
|
If this is your first time running Kubernetes and you intend to run through these instructions on your laptop, make sure that you have the following installed:
|
|
|
|
- [Kubernetes](https://kubernetes.io/docs/tasks/tools/)
|
|
- [Docker](https://docs.docker.com/engine/install/)
|
|
- [minikube](https://minikube.sigs.k8s.io/docs/start/)
|
|
|
|
Before running through the installation steps, make sure that you have a Kubernetes environment running locally. When using minikube, open a new terminal window and enter `minikube start`. Kubernetes will now use a containerized minikube cluster with a namespace called `default`.
|
|
|
|
Then install the OpenSearch Kubernetes Operator using the following steps:
|
|
|
|
1. In your preferred directory, clone the [OpenSearch Kubernetes Operator repo](https://github.com/Opster/opensearch-k8s-operator). Navigate into repo's directory using `cd`.
|
|
2. Go to the `opensearch-operator` folder.
|
|
3. Enter `make build manifests`.
|
|
4. Start a Kubernetes cluster. When using minikube, open a new terminal window and enter `minikube start`. Kubernetes will now use a containerized minikube cluster with a namespace called `default`. Make sure that `~/.kube/config` points to the cluster.
|
|
|
|
```yml
|
|
apiVersion: v1
|
|
clusters:
|
|
- cluster:
|
|
certificate-authority: /Users/naarcha/.minikube/ca.crt
|
|
extensions:
|
|
- extension:
|
|
last-update: Mon, 29 Aug 2022 10:11:47 CDT
|
|
provider: minikube.sigs.k8s.io
|
|
version: v1.26.1
|
|
name: cluster_info
|
|
server: https://127.0.0.1:61661
|
|
name: minikube
|
|
contexts:
|
|
- context:
|
|
cluster: minikube
|
|
extensions:
|
|
- extension:
|
|
last-update: Mon, 29 Aug 2022 10:11:47 CDT
|
|
provider: minikube.sigs.k8s.io
|
|
version: v1.26.1
|
|
name: context_info
|
|
namespace: default
|
|
user: minikube
|
|
name: minikube
|
|
current-context: minikube
|
|
kind: Config
|
|
preferences: {}
|
|
users:
|
|
- name: minikube
|
|
user:
|
|
client-certificate: /Users/naarcha/.minikube/profiles/minikube/client.crt
|
|
client-key: /Users/naarcha/.minikube/profiles/minikube/client.key
|
|
```
|
|
|
|
5. Enter `make install` to create the CustomResourceDefinition that runs in your Kubernetes cluster.
|
|
6. Start the OpenSearch Kubernetes Operator. Enter `make run`.
|
|
|
|
## Verify Kubernetes deployment
|
|
|
|
To ensure that Kubernetes recognizes the OpenSearch Kubernetes Operator as a namespace, enter `k get ns | grep opensearch`. Both `opensearch` and `opensearch-operator-system` should appear as `Active`.
|
|
|
|
With the operator active, use `k get pod -n opensearch-operator-system` to make sure that the operator's pods are running.
|
|
|
|
```
|
|
NAME READY STATUS RESTARTS AGE
|
|
opensearch-operator-controller-manager-<pod-id> 2/2 Running 0 25m
|
|
```
|
|
|
|
With the Kubernetes cluster running, you can now run OpenSearch inside the cluster.
|
|
|
|
## Deploy a new OpenSearch cluster
|
|
|
|
From your cloned OpenSearch Kubernetes Operator repo, navigate to the `opensearch-operator/examples` directory. There you'll find the `opensearch-cluster.yaml` file, which can be customized to the needs of your cluster, including the `clusterName` that acts as the namespace in which your new OpenSearch cluster will reside.
|
|
|
|
With your cluster configured, run the `kubectl apply` command.
|
|
|
|
```
|
|
kubectl apply -f opensearch-cluster.yaml
|
|
```
|
|
|
|
The operator creates several pods, including a bootstrap pod, three OpenSearch cluster pods, and one Dashboards pod. To connect to your cluster, use the `port-forward` command.
|
|
|
|
```
|
|
kubectl port-forward svc/my-cluster-dashboards 5601
|
|
```
|
|
|
|
Open http://localhost:5601 in your preferred browser and log in with the default demo credentials `admin / admin`. You can also run curl commands against the OpenSearch REST API by forwarding to port 9200.
|
|
|
|
```
|
|
kubectl port-forward svc/my-cluster 9200
|
|
```
|
|
|
|
In order to delete the OpenSearch cluster, delete the cluster resources. The following command deletes the cluster namespace and all its resources.
|
|
|
|
```
|
|
kubectl delete -f opensearch-cluster.yaml
|
|
```
|
|
|
|
## Next steps
|
|
|
|
To learn more about how to customize your Kubernetes OpenSearch cluster, including data persistence, authentication methods, and scaling, see the [OpenSearch Kubernetes Operator User Guide](https://github.com/Opster/opensearch-k8s-operator/blob/main/docs/userguide/main.md).
|
|
|
|
If you want to contribute to the development of the OpenSearch Kubernetes Operator, see the repo [design documents](https://github.com/Opster/opensearch-k8s-operator/blob/main/docs/designs/high-level.md). |