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[ aws . redshift ]

modify-cluster-parameter-group

Description

Modifies the parameters of a parameter group.

For more information about parameters and parameter groups, go to Amazon Redshift Parameter Groups in the Amazon Redshift Cluster Management Guide .

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.

Synopsis

  modify-cluster-parameter-group
--parameter-group-name <value>
--parameters <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Options

--parameter-group-name (string)

The name of the parameter group to be modified.

--parameters (list)

An array of parameters to be modified. A maximum of 20 parameters can be modified in a single request.

For each parameter to be modified, you must supply at least the parameter name and parameter value; other name-value pairs of the parameter are optional.

For the workload management (WLM) configuration, you must supply all the name-value pairs in the wlm_json_configuration parameter.

(structure)

Describes a parameter in a cluster parameter group.

ParameterName -> (string)

The name of the parameter.

ParameterValue -> (string)

The value of the parameter.

Description -> (string)

A description of the parameter.

Source -> (string)

The source of the parameter value, such as "engine-default" or "user".

DataType -> (string)

The data type of the parameter.

AllowedValues -> (string)

The valid range of values for the parameter.

ApplyType -> (string)

Specifies how to apply the WLM configuration parameter. Some properties can be applied dynamically, while other properties require that any associated clusters be rebooted for the configuration changes to be applied. For more information about parameters and parameter groups, go to Amazon Redshift Parameter Groups in the Amazon Redshift Cluster Management Guide .

IsModifiable -> (boolean)

If true , the parameter can be modified. Some parameters have security or operational implications that prevent them from being changed.

MinimumEngineVersion -> (string)

The earliest engine version to which the parameter can apply.

Shorthand Syntax:

ParameterName=string,ParameterValue=string,Description=string,Source=string,DataType=string,AllowedValues=string,ApplyType=string,IsModifiable=boolean,MinimumEngineVersion=string ...

JSON Syntax:

[
  {
    "ParameterName": "string",
    "ParameterValue": "string",
    "Description": "string",
    "Source": "string",
    "DataType": "string",
    "AllowedValues": "string",
    "ApplyType": "static"|"dynamic",
    "IsModifiable": true|false,
    "MinimumEngineVersion": "string"
  }
  ...
]

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See 'aws help' for descriptions of global parameters.

Examples

Modify a parameter in a parameter group

The following modify-cluster-parameter-group example modifies the wlm_json_configuration parameter for workload management. It accepts the parameters from a file that contains the JSON contents shown below.

aws redshift modify-cluster-parameter-group \
    --parameter-group-name myclusterparametergroup \
    --parameters file://modify_pg.json

Contents of modify_pg.json:

[
    {
        "ParameterName": "wlm_json_configuration",
        "ParameterValue": "[{\"user_group\":\"example_user_group1\",\"query_group\": \"example_query_group1\", \"query_concurrency\":7},{\"query_concurrency\":5}]"
    }
]

Output:

{
   "ParameterGroupStatus": "Your parameter group has been updated but changes won't get applied until you reboot the associated Clusters.",
   "ParameterGroupName": "myclusterparametergroup",
   "ResponseMetadata": {
      "RequestId": "09974cc0-64cd-11e2-bea9-49e0ce183f07"
   }
}

Output

ParameterGroupName -> (string)

The name of the cluster parameter group.

ParameterGroupStatus -> (string)

The status of the parameter group. For example, if you made a change to a parameter group name-value pair, then the change could be pending a reboot of an associated cluster.