Splits a shard that is in the readwrite state.
Usage notes
- Host consists of a project name and a Log Service endpoint. You must specify a project in Host.
An AccessKey pair is created and obtained. For more information, see AccessKey pairs.
The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in Log Service is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. Make sure that the RAM user has the management permissions on Log Service resources. For more information, see Create a RAM user and authorize the RAM user to access Log Service.
- The information that is required to query logs is obtained. The information includes the name of the project to which the logs belong, the region of the project, and the name of the Logstore to which the logs belong. For more information, see Manage a project and Manage a Logstore.
- Each shard has an MD5 hash range, and each range is a left-closed, right-open interval. The interval is in the
[BeginKey,EndKey)
format. A shard can be in the readwrite or readonly state. You can split and merge shards. For more information, see Shard.
Authentication resources
The following table describes the authorization information that is required for this operation. You can add the information to the Action element of a RAM policy statement to grant a RAM user or a RAM role the permissions to call this operation.
Action | Resource |
log:SplitShard | acs:log:{#regionId}:{#accountId}:project/{#ProjectName}/logstore/{#LogstoreName} |
Debugging
Request headers
This operation uses only common request headers. For more information, see Common request headers.
Request syntax
POST /logstores/{logstore}/shards/{shard}?action=split HTTP/1.1
Request parameters
Parameter | Type | Position | Required | Example | Description |
project | String | Host | Yes | ali-test-project | The name of the project. |
logstore | String | Path | Yes | logstorename | The name of the Logstore. |
shard | Integer | Path | Yes | 0 | The ID of the shard. |
key | String | Query | No | ef000000000000000000000000000000 | The position from which the shard is split. |
shardCount | Integer | Query | No | 2 | The number of shards into which the shard is split. |
Response parameters
Parameter | Type | Example | Description |
Server | String | nginx | The name of the server. |
Content-Type | String | application/json | The type of the response body. Valid values: application/json and application/x-protobuf. |
Content-Length | String | 20 | The length of the response body. |
Connection | String | close | Indicates whether the connection is persistent. Valid values:
|
Date | String | Sun, 27 May 2018 08:25:04 GMT | The time when the response was returned. |
x-log-requestid | String | 5B0A6B60BB6EE39764D458B5 | The request ID. |
Array of shard | The shards that are returned. For example, if shardCount is set to 2, an array that consists of three shards is returned. The first shard is the original shard, and the last two shards are the new shards. |
Examples
Sample requests
POST /logstores/logstorename/shards/{shard}?action=split?key=ef000000000000000000000000000000&shardCount=2 HTTP/1.1
Host:ali-test-project.cn-hangzhou.log.aliyuncs.com
Content-Type:application/json
Sample success responses
JSON
format
HTTP/1.1 200 OK
Content-Type:application/json
{
"shardID" : 0,
"status" : "readwrite",
"inclusiveBeginKey" : "00000000000000000000000000000000",
"exclusiveEndKey" : "8000000000000000000000000000000",
"serverIp" : "10.0.xx.x",
"createTime" : 1453949705
}
Error codes
For a list of error codes, see Service error codes.
HttpStatusCode | ErrorCode | ErrorMessage | Description |
404 | ProjectNotExist | Project does not exist. | The specified project does not exist. |
404 | LogStoreNotExist | Logstore does not exist. | The specified Logstore does not exist. |
400 | ParameterInvalid | invalid shard id. | The specified shard ID is invalid. |
400 | ParameterInvalid | invalid mid hash. | The key parameter is invalid. |
400 | LogStoreWithoutShard | logstore has no shard. | No shards exist in the specified Logstore. |
500 | InternalServerError | Specified Server Error Message. | An internal server error has occurred. |
For more information, see Error codes.