Set up the Kubernetes operator for Public Cloud Databases

Bases de conhecimento

KB0058464

Set up the Kubernetes operator for Public Cloud Databases


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Objective

The kubernetes database operator allows you to automaticaly authorize your Kubernetes cluster IP on your OVHcloud Public Cloud Databases service.

This guide explains how to install and use the database operator in order to authorize the Kubernetes IP on your service

Requirements

Getting your OVHcloud API tokens information

In order to generate your OVHcloud API, please follow our First steps with the OVHcloud APIs tutorial.

Specifically, you have to generate these credentials via the OVHcloud token generation page with the following rights:

  • GET /cloud/project/*/database/*
  • POST /cloud/project/*/database/*
  • PUT /cloud/project/*/database/*
  • DELETE /cloud/project/*/database/*

Instructions

The Kubernetes database operator is stored as an Helm chart in Docker Hub, an OCI registry.

Helm Values

The first step is to create a values.yaml.

Please replace the XXXX with the credentials you previously retrieved.

Note that the region value is either ovh-eu, ovh-ca or ovh-us.

ovhCredentials:
  applicationKey: XXXX
  applicationSecret: XXXX
  consumerKey: XXXX
  region: ovh-eu # ovh-eu, ovh-ca or ovh-us

namespace: ovhcloud # Your Kubernetes namespace

Installation

Use the kubernetes package manager helm and the values file you created to install the operator.

helm install -f values.yaml public-cloud-databases-operator oci://registry-1.docker.io/ovhcom/public-cloud-databases-operator --version 0.1.1

This command will create the operator, CRDs and secrets objects.

You can find the latest version of the helm chart on DockerHub.

You can verify the operator is correctly installed by checking the Pods in the new Kubernetes namespace:

kubectl get deploy -n ovhcloud
NAME                              READY   UP-TO-DATE   AVAILABLE   AGE
public-cloud-databases-operator   1/1     1            1           60m

And that the secret with you OVHcloud credentials is properly created:

kubectl get secret ovh-credentials -n ovhcloud
NAME              TYPE     DATA   AGE
ovh-credentials   Opaque   4      60m

Creating custom resources

Create a custom resource object:

apiVersion: cloud.ovh.net/v1alpha1
kind: Database
metadata:
  name: mydatabase
  namespace: ovhcloud
spec:
  projectId: XXXX # ID of your Public Cloud project ID
  serviceId: XXX # ID of your Public Cloud Databases service

Or with a label selector to cherry pick you nodes based on label:

apiVersion: cloud.ovh.net/v1alpha1
kind: Database
metadata:
  name: mydatabase
  namespace: ovhcloud
spec:
  projectId: XXXX # ID of your Public Cloud project ID
  serviceId: XXX # ID of your Public Cloud Databases service
  labelSelector:
    matchLabels:
      LABELNAME: LABELVALUE

The serviceId field is optional. If not set, the operator will be run against all the services of your project.

Apply it to the cluster:

kubectl apply -f cr.yaml

You can check it has been properly created using this command:

kubectl kubectl -n ovhcloud get database
NAME                              AGE
public-cloud-databases-operator   59m

Nodes Labels

You can use Kubernetes labeling in order to select specific Nodes that you want the operator to be run against.

The created CR and the Node must have the same label and value.

kubectl label nodes NODENAME1 NODENAME2 ... LABELNAME=LABELVALUE

Go further

We want your feedback!

We would love to help answer questions and appreciate any feedback you may have.

If you need training or technical assistance to implement our solutions, contact your sales representative or click on this link to get a quote and ask our Professional Services experts for a custom analysis of your project.

Are you on Discord? Connect to our channel at https://discord.gg/ovhcloud and interact directly with the team that builds our databases service!

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