Updating a Managed Service for Kubernetes cluster

If you do not have the Yandex Cloud command line interface yet, install and initialize it.

The folder specified in the CLI profile is used by default. You can specify a different folder using the --folder-name or --folder-id parameter.

To update a Managed Service for Kubernetes cluster:

1. View a description of the update Managed Service for Kubernetes cluster CLI command:

   yc managed-kubernetes cluster update --help
   

2. Run the following command and provide a list of settings you want to change (not all settings are listed in the example below):

   yc managed-kubernetes cluster update <Managed_Service_for_Kubernetes_cluster_name> \
     --new-name <new_name_for_Managed_Service_for_Kubernetes_cluster> \
     --description <Managed_Service_for_Kubernetes_cluster_description> \
     --service-account-id <ID_of_service_account_for_resources> \
     --service-account-name <name_of_service_account_for_resources> \
     --node-service-account-id <ID_of_service_account_for_Kubernetes_nodes> \
     --security-group-ids <list_of_security_group_IDs> \
     --master-logging enabled=<send_logs>,`
         `log-group-id=<log_group_ID>,`
         `folder-id=<folder_ID>,`
         `kube-apiserver-enabled=<send_kube-apiserver_logs>,`
         `cluster-autoscaler-enabled=<send_cluster-autoscaler_logs>,`
         `events-enabled=<send_Kubernetes_events>`
         `audit-enabled=<send_audit_events>
   

   Where:

   • --new-name: Managed Service for Kubernetes cluster name.

   • --description: Managed Service for Kubernetes cluster description.

   • --service-account-id, --service-account-name: Service account for managing the Managed Service for Kubernetes cluster.

   • --node-service-account-id, --node-service-account-name: Service account for managing the Managed Service for Kubernetes nodes.

   • --security-group-ids: Managed Service for Kubernetes cluster security groups.

     Warning

     The configuration of security groups determines cluster performance, availability, and services running in the cluster.

   • --master-logging: Sending logs to Cloud Logging:

     • enabled: Flag that enables log sending, true or false.
     • log-group-id: ID of the log group to send the logs to.
     • folder-id: ID of the folder to send the logs to. The logs will be sent to the log group of the default folder.
     • kube-apiserver-enabled: Flag that enables kube-apiserver log sending, true or false.
     • cluster-autoscaler-enabled: Flag that enables cluster-autoscaler log sending, true or false.
     • events-enabled: Flag that enables Kubernetes event sending, true or false.
     • audit-enabled: Flag that enables audit event sending, true or false.

     If log sending is enabled but neither log-group-id nor folder-id is specified, the logs will be sent to the default log group of the folder with the Managed Service for Kubernetes cluster. You cannot set both log-group-id and folder-id at the same time.

   • --version: Kubernetes version.

   • --latest-revision: Get all available updates for the current Managed Service for Kubernetes master version.

   • --auto-upgrade: Manage automatic Managed Service for Kubernetes cluster updates.

   • Managing the maintenance window:

     • --anytime-maintenance-window: Update at any time.
     • --daily-maintenance-window: Update daily at the selected time.
     • --weekly-maintenance-window: Update on selected days.

To update a Managed Service for Kubernetes cluster:

1. Open the current configuration file with the Managed Service for Kubernetes cluster description.

   For more information about creating this file, see Creating a Managed Service for Kubernetes cluster.

2. Edit the required parameters in the Managed Service for Kubernetes cluster description.

   To edit the settings for sending logs to Cloud Logging, configure the master_logging section parameters. If there is no such section, create one.

   resource "yandex_kubernetes_cluster" "<cluster_name>" {
    ...
    master {
      ...
      master_logging {
        enabled                    = <log_sending>
        log_group_id               = "<log_group_ID>"
        folder_id                  = "<folder_ID>"
        kube_apiserver_enabled     = <kube-apiserver_log_sending>
        cluster_autoscaler_enabled = <cluster-autoscaler_log_sending>
        events_enabled             = <Kubernetes_event_sending>
        audit_enabled              = <audit_event_sending>
      }
    }
   }
   

   Where:

   • enabled: Flag that enables log sending, true or false.
   • log_group_id: ID of the log group to send the logs to.
   • folder_id: ID of the folder to send the logs to. The logs will be sent to the log group of the default folder.
   • kube_apiserver_enabled: Flag that enables kube-apiserver log sending, true or false.
   • cluster_autoscaler_enabled: Flag that enables cluster-autoscaler log sending, true or false.
   • events_enabled: Flag that enables Kubernetes event sending, true or false.
   • audit_enabled: Flag that enables audit event sending, true or false.

   If log sending is enabled but neither log_group_id nor folder_id is specified, the logs will be sent to the default log group of the folder with the Managed Service for Kubernetes cluster. You cannot set both log_group_id and folder_id at the same time.

3. Make sure the configuration files are correct.

   1. Using the command line, navigate to the folder that contains the up-to-date Terraform configuration files with an infrastructure plan.

   2. Run the command:

      terraform validate
      

      If there are errors in the configuration files, Terraform will point to them.

4. Confirm updating the resources.

   1. Run the command to view planned changes:

      terraform plan
      

      If the resource configuration descriptions are correct, the terminal will display a list of the resources to modify and their parameters. This is a test step. No resources are updated.

   2. If you are happy with the planned changes, apply them:

      1. Run the command:

         terraform apply
         

      2. Confirm the update of resources.

      3. Wait for the operation to complete.

   For more information, see the Terraform provider documentation.

To edit Managed Service for Kubernetes cluster parameters, use the update method for the Cluster resource.

To edit the settings for sending logs to Cloud Logging, configure their masterSpec.masterLogging parameter values.