Queries the configurations and operational parameters of an ApsaraDB for Redis instance.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes DescribeParameters

The operation that you want to perform. Set the value to DescribeParameters.

DBInstanceId String Yes r-bp1zxszhcgatnx****

The ID of the instance.

NodeId String No r-bp1xxxxxxxxxxxxx-db-0

The ID of the node.

Note You can set this parameter to query the parameter configurations of a specified node in a cluster instance.

Response parameters

Parameter Type Example Description
ConfigParameters Array of Parameter

The returned configuration parameters.

Parameter
CheckingCode String [0|1]

The valid values of the parameter.

ForceRestart Boolean true

Indicates whether a restart is required to take effect. Valid values:

  • True: A restart is required for modifications to take effect.
  • False: A restart is not required. Modifications immediately take effect.
ModifiableStatus Boolean true

Indicates whether the parameter can be modified. Valid values:

  • False: The parameter setting cannot be modified.
  • True: The parameter setting can be modified.
ParameterDescription String Check all keys passed in the KEYS array map to the same slot.

The description of the parameter.

ParameterName String script_check_enable

The name of the parameter.

ParameterValue String 1

The value of the parameter.

Engine String redis

The engine type of the instance.

EngineVersion String 4.0

The engine version of the instance.

RunningParameters Array of Parameter

The operational parameters that are returned.

Parameter
CheckingCode String [0|1]

The valid values of the parameter.

ForceRestart String true

Indicates whether a restart is required to take effect. Valid values:

  • True: A restart is required for modifications to take effect.
  • False: A restart is not required. Modifications immediately take effect.
ModifiableStatus String true

Indicates whether the parameter can be modified. Valid values:

  • False: The parameter cannot be modified.
  • True: The parameter can be modified.
ParameterDescription String You can disable some dangerous commands, for example \"keys,flushdb,flushall\", the commands must be in [flushall,flushdb,keys,hgetall,eval,evalsha,script].

The description of the parameter.

ParameterName String #no_loose_disabled-commands

The name of the parameter.

ParameterValue String keys,flushall,flushdb

The value of the parameter.

RequestId String 9C1338BE-8DE8-4890-A900-E1BC06BF****

The ID of the request.

Examples

Sample requests

https://r-kvstore.aliyuncs.com/?Action=DescribeParameters
&DBInstanceId=r-bp1zxszhcgatnx****
&<Common request parameters>

Sample success responses

XML format

<DescribeParametersResponse>
	  <ConfigParameters></ConfigParameters>
	  <RequestId>9C1338BE-8DE8-4890-A900-E1BC06BF****</RequestId>
	  <RunningParameters>
		    <Parameter>
			      <ParameterDescription>check whitelist always</ParameterDescription>
			      <ParameterValue>no</ParameterValue>
			      <CheckingCode>[yes|no]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>#no_loose_check-whitelist-always</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>You can disable some dangerous commands, for example "keys,flushdb,flushall", the commands must be in [flushall,flushdb,keys,hgetall,eval,evalsha,script]. </ParameterDescription>
			      <ParameterValue>keys,flushall,flushdb</ParameterValue>
			      <CheckingCode>. *</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>#no_loose_disabled-commands</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>Enable or disable SSL</ParameterDescription>
			      <ParameterValue>yes</ParameterValue>
			      <CheckingCode>[yes|no]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>#no_loose_ssl-enabled</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>Be compatible with cluster mode. </ParameterDescription>
			      <ParameterValue>0</ParameterValue>
			      <CheckingCode>[0|1]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>cluster_compat_enable</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>Check all keys passed in the KEYS array map to the same slot. </ParameterDescription>
			      <ParameterValue>1</ParameterValue>
			      <CheckingCode>[0|1]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>script_check_enable</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>If hash fields are less than this value and hash value sizes are less than hash-max-ziplist-value, the ziplist will be used. </ParameterDescription>
			      <ParameterValue>512</ParameterValue>
			      <CheckingCode>[0-999999999999999]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>hash-max-ziplist-entries</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>If hash value sizes are than less this value and hash fields are less than hash-max-ziplist-entries, the ziplist will be used. </ParameterDescription>
			      <ParameterValue>64</ParameterValue>
			      <CheckingCode>[0-999999999999999]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>hash-max-ziplist-value</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>lazyfree switch on eviction. </ParameterDescription>
			      <ParameterValue>yes</ParameterValue>
			      <CheckingCode>[yes|no]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>lazyfree-lazy-eviction</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>lazyfree switch on expire. </ParameterDescription>
			      <ParameterValue>yes</ParameterValue>
			      <CheckingCode>[yes|no]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>lazyfree-lazy-expire</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>lazyfree switch on server implicit deletion. </ParameterDescription>
			      <ParameterValue>yes</ParameterValue>
			      <CheckingCode>[yes|no]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>lazyfree-lazy-server-del</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>The number of entries on the list that are not compressed at both ends. </ParameterDescription>
			      <ParameterValue>0</ParameterValue>
			      <CheckingCode>[0-65535]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>list-compress-depth</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>Threadhold of ziplist size on quicklist. </ParameterDescription>
			      <ParameterValue>-2</ParameterValue>
			      <CheckingCode>[-5-99999999]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>list-max-ziplist-size</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>To config how Redis will select what to remove when maxmemory is reached. There are eight behaviors that can be chose : volatile-lru,allkeys-lru,volatile-lfu,allkeys-lfu,volatile-random,allkeys-random,volatile-ttl,noeviction</ParameterDescription>
			      <ParameterValue>volatile-lfu</ParameterValue>
			      <CheckingCode>[volatile-lru|allkeys-lru|volatile-random|allkeys-random|volatile-ttl|volatile-lfu|allkeys-lfu|noeviction]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>maxmemory-policy</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>
				Sets have a special encoding in just one case: when a set is composed
				of just strings that happen to be integers in radix 10 in the range
				of 64 bit signed integers.
				The following configuration setting sets the limit in the size of the
			set in order to use this special memory saving encoding. </ParameterDescription>
			      <ParameterValue>512</ParameterValue>
			      <CheckingCode>[0-999999999999999]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>set-max-intset-entries</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>
				The time is expressed in microseconds, so 1000000 is equivalent
				to one second. Note that a negative number disables the slow log,
			while a value of zero forces the logging of every command. </ParameterDescription>
			      <ParameterValue>10000</ParameterValue>
			      <CheckingCode>[0-10000000]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>slowlog-log-slower-than</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>The max slowlog count. </ParameterDescription>
			      <ParameterValue>1024</ParameterValue>
			      <CheckingCode>[100-10000]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>slowlog-max-len</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>
				Similarly to hashes and lists, sorted sets are also specially encoded in
			order to save a lot of space. </ParameterDescription>
			      <ParameterValue>128</ParameterValue>
			      <CheckingCode>[0-999999999999999]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>zset-max-ziplist-entries</ParameterName>
		    </Parameter>
		    <Parameter>
			      <ParameterDescription>
				Similarly to hashes and lists, sorted sets are also specially encoded in
			order to save a lot of space. </ParameterDescription>
			      <ParameterValue>64</ParameterValue>
			      <CheckingCode>[0-999999999999999]</CheckingCode>
			      <ForceRestart>false</ForceRestart>
			      <ModifiableStatus>true</ModifiableStatus>
			      <ParameterName>zset-max-ziplist-value</ParameterName>
		    </Parameter>
	  </RunningParameters>
	  <EngineVersion>4.0</EngineVersion>
	  <Engine>redis</Engine>
</DescribeParametersResponse>

JSON format

{
	"ConfigParameters": {
		"Parameter": []
	},
	"RequestId": "9C1338BE-8DE8-4890-A900-E1BC06BF****",
	"RunningParameters": {
		"Parameter": [
			{
				"ParameterDescription": "check whitelist always",
				"ParameterValue": "no",
				"CheckingCode": "[yes|no]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "#no_loose_check-whitelist-always"
			},
			{
				"ParameterDescription": "You can disable some dangerous commands, for example \"keys,flushdb,flushall\", the commands must be in [flushall,flushdb,keys,hgetall,eval,evalsha,script].",
				"ParameterValue": "keys,flushall,flushdb",
				"CheckingCode": ". *",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "#no_loose_disabled-commands"
			},
			{
				"ParameterDescription": "Enable or disable SSL",
				"ParameterValue": "yes",
				"CheckingCode": "[yes|no]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "#no_loose_ssl-enabled"
			},
			{
				"ParameterDescription": "Be compatible with cluster mode.",
				"ParameterValue": "0",
				"CheckingCode": "[0|1]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "cluster_compat_enable"
			},
			{
				"ParameterDescription": "Check all keys passed in the KEYS array map to the same slot.",
				"ParameterValue": "1",
				"CheckingCode": "[0|1]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "script_check_enable"
			},
			{
				"ParameterDescription": "If hash fields are less than this value and hash value sizes are less than hash-max-ziplist-value, the ziplist will be used.",
				"ParameterValue": "512",
				"CheckingCode": "[0-999999999999999]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "hash-max-ziplist-entries"
			},
			{
				"ParameterDescription": "If hash value sizes are than less this value and hash fields are less than hash-max-ziplist-entries, the ziplist will be used.",
				"ParameterValue": "64",
				"CheckingCode": "[0-999999999999999]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "hash-max-ziplist-value"
			},
			{
				"ParameterDescription": "lazyfree switch on eviction.",
				"ParameterValue": "yes",
				"CheckingCode": "[yes|no]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "lazyfree-lazy-eviction"
			},
			{
				"ParameterDescription": "lazyfree switch on expire.",
				"ParameterValue": "yes",
				"CheckingCode": "[yes|no]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "lazyfree-lazy-expire"
			},
			{
				"ParameterDescription": "lazyfree switch on server implicit deletion.",
				"ParameterValue": "yes",
				"CheckingCode": "[yes|no]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "lazyfree-lazy-server-del"
			},
			{
				"ParameterDescription": "The number of entries on the list that are not compressed at both ends.",
				"ParameterValue": "0",
				"CheckingCode": "[0-65535]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "list-compress-depth"
			},
			{
				"ParameterDescription": "Threadhold of ziplist size on quicklist.",
				"ParameterValue": "-2",
				"CheckingCode": "[-5-99999999]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "list-max-ziplist-size"
			},
			{
				"ParameterDescription": "To config how Redis will select what to remove when maxmemory is reached. There are eight behaviors that can be chose : volatile-lru,allkeys-lru,volatile-lfu,allkeys-lfu,volatile-random,allkeys-random,volatile-ttl,noeviction",
				"ParameterValue": "volatile-lfu",
				"CheckingCode": "[volatile-lru|allkeys-lru|volatile-random|allkeys-random|volatile-ttl|volatile-lfu|allkeys-lfu|noeviction]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "maxmemory-policy"
			},
			{
				"ParameterDescription": "Sets have a special encoding in just one case: when a set is composed\nof just strings that happen to be integers in radix 10 in the range\nof 64 bit signed integers.\nThe following configuration setting sets the limit in the size of the\nset in order to use this special memory saving encoding.",
				"ParameterValue": "512",
				"CheckingCode": "[0-999999999999999]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "set-max-intset-entries"
			},
			{
				"ParameterDescription": "The time is expressed in microseconds, so 1000000 is equivalent\nto one second. Note that a negative number disables the slow log,\nwhile a value of zero forces the logging of every command.",
				"ParameterValue": "10000",
				"CheckingCode": "[0-10000000]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "slowlog-log-slower-than"
			},
			{
				"ParameterDescription": "The max slowlog count.",
				"ParameterValue": "1024",
				"CheckingCode": "[100-10000]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "slowlog-max-len"
			},
			{
				"ParameterDescription": "Similarly to hashes and lists, sorted sets are also specially encoded in\norder to save a lot of space.",
				"ParameterValue": "128",
				"CheckingCode": "[0-999999999999999]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "zset-max-ziplist-entries"
			},
			{
				"ParameterDescription": "Similarly to hashes and lists, sorted sets are also specially encoded in\norder to save a lot of space.",
				"ParameterValue": "64",
				"CheckingCode": "[0-999999999999999]",
				"ForceRestart": "false",
				"ModifiableStatus": "true",
				"ParameterName": "zset-max-ziplist-value"
			}
		]
	},
	"EngineVersion": "4.0",
	"Engine": "redis"
}

Error codes

HttpCode Error code Error message Description
404 InvalidDBInstanceClass.NotFound Specified DB instance class is not found. The error message returned because the specified instance type is invalid. Check whether the instance type is valid.
403 IncorrectDBInstanceType Current DB instance type does not support this operation. The error message returned because the current instance type does not support this operation. You can clone or back up only read replica instances.

For a list of error codes, visit the API Error Center.