How to Enable High Availability

1. Install doctl, the DigitalOcean command-line tool.
2. Create a personal access token and save it for use with doctl.

3. Use the token to grant doctl access to your DigitalOcean account.

   doctl auth init

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4. Finally, run doctl kubernetes cluster update. Basic usage looks like this, but you can read the usage docs for more details:

   doctl kubernetes cluster update <id|name> [flags]

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   The following example updates a cluster named example-cluster to enable automatic upgrades and sets the maintenance window to saturday=02:00:

   doctl kubernetes cluster update example-cluster --auto-upgrade --maintenance-window saturday=02:00

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1. Create a personal access token and save it for use with the API.

2. Send a PUT request to https://api.digitalocean.com/v2/kubernetes/clusters/{cluster_id}

   cURL

   Using cURL:

   curl -X PUT \
   -H "Content-Type: application/json" \
   -H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
   -d '{"name": "stage-cluster-01", "tags":["staging", "web-team"]}' \
   "https://api.digitalocean.com/v2/kubernetes/clusters/bd5f5959-5e1e-4205-a714-a914373942af"

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   Go

   Using Godo, the official DigitalOcean V2 API client for Go:

   import (
       "context"
       "os"
   
       "github.com/digitalocean/godo"
   )
   
   func main() {
       token := os.Getenv("DIGITALOCEAN_TOKEN")
   
       client := godo.NewFromToken(token)
       ctx := context.TODO()
   
       updateRequest := &godo.KubernetesClusterUpdateRequest{
           Name: "stage-cluster-01",
           Tags: []string{"staging", "web-team"},
       }
   
       cluster, _, err := client.Kubernetes.Update(ctx, "bd5f5959-5e1e-4205-a714-a914373942af", updateRequest)
   }

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   Ruby

   Using DropletKit, the official DigitalOcean V2 API client for Ruby:

   require 'droplet_kit'
   token = ENV['DIGITALOCEAN_TOKEN']
   client = DropletKit::Client.new(access_token: token)
   
   cluster = DropletKit::KubernetesCluster.new(
     name: 'foo',
     tags: ['staging', 'web-team']
   )
   
   client.kubernetes_clusters.update(cluster, id: 'bd5f5959-5e1e-4205-a714-a914373942af')

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   Python

   import os
   from pydo import Client
   
   client = Client(token=os.environ.get("DIGITALOCEAN_TOKEN"))
   
   req = {
     "name": "prod-cluster-01",
     "tags": [
       "k8s",
       "k8s:bd5f5959-5e1e-4205-a714-a914373942af",
       "production",
       "web-team"
     ],
     "maintenance_policy": {
       "start_time": "12:00",
       "day": "any"
     },
     "auto_upgrade": True,
     "surge_upgrade": True,
     "ha": True
   }
   
   resp = client.kubernetes.update_cluster(cluster_id="1fd32a", body=req)

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DigitalOcean Kubernetes clusters originally created with version 1.20 or older have a version of the control plane which does not allow you to enable high availability. If you cannot find this card, upgrade your control plane.

To check whether you can upgrade your cluster to the new control plane, see Upgrading to New Control Plane.