将 ModifyCluster 与 AWS SDK 或 CLI 配合使用

将安全组与集群关联 此示例演示了如何将群集安全组与指定的集群相关联。命令：

aws redshift modify-cluster --cluster-identifier mycluster --cluster-security-groups mysecuritygroup

修改集群的维护时段 此示例演示了如何将集群的每周首选维护时段更改为最少四小时的时段，从周日晚上 11:15 开始，到周一凌晨 3:15 结束。命令：

aws redshift modify-cluster --cluster-identifier mycluster --preferred-maintenance-window Sun:23:15-Mon:03:15

更改集群的主密码 此示例演示了如何更改集群的主密码。命令：

aws redshift modify-cluster --cluster-identifier mycluster --master-user-password A1b2c3d4

import (
	"context"
	"errors"
	"log"
	"time"

	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/service/redshift"
	"github.com/aws/aws-sdk-go-v2/service/redshift/types"
)



// RedshiftActions wraps Redshift service actions.
type RedshiftActions struct {
	RedshiftClient *redshift.Client
}



// ModifyCluster sets the preferred maintenance window for the given cluster.
func (actor RedshiftActions) ModifyCluster(ctx context.Context, clusterId string, maintenanceWindow string) *redshift.ModifyClusterOutput {
	// Modify the cluster's maintenance window
	input := &redshift.ModifyClusterInput{
		ClusterIdentifier:          aws.String(clusterId),
		PreferredMaintenanceWindow: aws.String(maintenanceWindow),
	}

	var opErr *types.InvalidClusterStateFault
	output, err := actor.RedshiftClient.ModifyCluster(ctx, input)
	if err != nil && errors.As(err, &opErr) {
		log.Println("Cluster is in an invalid state.")
		panic(err)
	} else if err != nil {
		log.Printf("Failed to modify Redshift cluster: %v\n", err)
		panic(err)
	}

	log.Printf("The cluster was successfully modified and now has %s as the maintenance window\n", *output.Cluster.PreferredMaintenanceWindow)
	return output
}

修改集群。

    /**
     * Modifies an Amazon Redshift cluster asynchronously.
     *
     * @param clusterId the identifier of the cluster to be modified
     * @return a {@link CompletableFuture} that completes when the cluster modification is complete
     */
    public CompletableFuture<ModifyClusterResponse> modifyClusterAsync(String clusterId) {
        ModifyClusterRequest modifyClusterRequest = ModifyClusterRequest.builder()
            .clusterIdentifier(clusterId)
            .preferredMaintenanceWindow("wed:07:30-wed:08:00")
            .build();

        return getAsyncClient().modifyCluster(modifyClusterRequest)
            .whenComplete((clusterResponse, exception) -> {
                if (exception != null) {
                    if (exception.getCause() instanceof RedshiftException) {
                        logger.info("Error: {} ", exception.getMessage());
                    } else {
                        logger.info("Unexpected error: {} ", exception.getMessage());
                    }
                } else {
                    logger.info("The modified cluster was successfully modified and has "
                        + clusterResponse.cluster().preferredMaintenanceWindow() + " as the maintenance window");
                }
            });
    }

创建客户端。

import { RedshiftClient } from "@aws-sdk/client-redshift";
// Set the AWS Region.
const REGION = "REGION";
//Set the Redshift Service Object
const redshiftClient = new RedshiftClient({ region: REGION });
export { redshiftClient };

修改集群。

// Import required AWS SDK clients and commands for Node.js
import { ModifyClusterCommand } from "@aws-sdk/client-redshift";
import { redshiftClient } from "./libs/redshiftClient.js";

// Set the parameters
const params = {
  ClusterIdentifier: "CLUSTER_NAME",
  MasterUserPassword: "NEW_MASTER_USER_PASSWORD",
};

const run = async () => {
  try {
    const data = await redshiftClient.send(new ModifyClusterCommand(params));
    console.log("Success was modified.", data);
    return data; // For unit tests.
  } catch (err) {
    console.log("Error", err);
  }
};
run();

修改集群。

suspend fun modifyCluster(clusterId: String?) {
    val modifyClusterRequest =
        ModifyClusterRequest {
            clusterIdentifier = clusterId
            preferredMaintenanceWindow = "wed:07:30-wed:08:00"
        }

    RedshiftClient { region = "us-west-2" }.use { redshiftClient ->
        val clusterResponse = redshiftClient.modifyCluster(modifyClusterRequest)
        println(
            "The modified cluster was successfully modified and has ${clusterResponse.cluster?.preferredMaintenanceWindow} as the maintenance window",
        )
    }
}

class RedshiftWrapper:
    """
    Encapsulates Amazon Redshift cluster operations.
    """

    def __init__(self, redshift_client):
        """
        :param redshift_client: A Boto3 Redshift client.
        """
        self.client = redshift_client


    def modify_cluster(self, cluster_identifier, preferred_maintenance_window):
        """
        Modifies a cluster.

        :param cluster_identifier: The cluster identifier.
        :param preferred_maintenance_window: The preferred maintenance window.
        """
        try:
            self.client.modify_cluster(
                ClusterIdentifier=cluster_identifier,
                PreferredMaintenanceWindow=preferred_maintenance_window,
            )
        except ClientError as err:
            logging.error(
                "Couldn't modify a cluster. Here's why: %s: %s",
                err.response["Error"]["Code"],
                err.response["Error"]["Message"],
            )
            raise

以下代码会实例化 RedshiftWrapper 对象。

    client = boto3.client("redshift")
    redhift_wrapper = RedshiftWrapper(client)