Creates a primary/secondary server group. A primary/secondary server group can contain only two Elastic Compute Service (ECS) instances. One of the ECS instances functions as the primary server and the other functions as the secondary server.
Debugging
Authorization information
The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action
policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:
- Operation: the value that you can use in the Action element to specify the operation on a resource.
- Access level: the access level of each operation. The levels are read, write, and list.
- Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level,
All Resources
is used in the Resource type column of the operation.
- Condition Key: the condition key that is defined by the cloud service.
- Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
Operation | Access level | Resource type | Condition key | Associated operation |
---|---|---|---|---|
slb:CreateMasterSlaveServerGroup | WRITE |
|
| none |
Request parameters
Parameter | Type | Required | Description | Example |
---|---|---|---|---|
RegionId | string | Yes | The ID of the region where the Server Load Balancer (SLB) instance is deployed. | cn-hangzhou |
LoadBalancerId | string | Yes | The ID of the SLB instance. | lb-bp1hv944r69al4j****** |
MasterSlaveServerGroupName | string | No | The name of the primary/secondary server group. | Group1 |
MasterSlaveBackendServers | string | Yes | The backend servers in the primary/secondary server group. The value of this parameter must be a STRING list in the JSON format. You can specify up to 20 elements in each request.
A primary/secondary server group can contain up to two backend servers. If you do not specify this parameter, an empty primary/secondary server group is created. Examples:
| [{ "ServerId": "i-xxxxxxxxx", "Weight": "100", "Type": "ecs", "Port":"82","ServerType":"Master","Description":"test-112" }, { "ServerId": "i-xxxxxxxxx", "Weight": "100", "Type": "ecs", "Port":"84","ServerType":"Slave","Description":"test-112" }] |
Response parameters
Examples
Sample success responses
JSON
format
{
"MasterSlaveServerGroupId": "rsp-bp19au4******",
"RequestId": "7CA4DB76-4D32-523B-822E-5C9494613D46",
"MasterSlaveBackendServers": {
"MasterSlaveBackendServer": [
{
"Type": "ecs",
"Weight": 100,
"Description": "test-112",
"Port": 82,
"ServerId": "i-bp1fq61enf4loa5i****",
"ServerType": "Master"
}
]
}
}
Error codes
HTTP status code | Error code | Error message |
---|---|---|
400 | BACKEND_SERVERS_NUM_MUST_BE_TWO | Backend servers num must be 2. |
400 | Mismatched.ZoneId | The zone of the server is not matched with the cloud box loadbalancer. |
400 | BACKEND_SERVERS_HAVE_SAME_PORT_AND_SERVERID | Backend servers have same port and serverId. |
400 | BACKEND_SERVERS_CAN_ONLY_CONTAIN_ONE_MASTER_AND_ONE_SLAVE | Backend servers can only contain one master and one slave. |
400 | BACKEND_SERVER_ID_CAN_NOT_EMPTY | Backend server id can not empty. |
400 | INVALID_SERVER_TYPE | Invalid server type. |
400 | BACKEND_SERVER_PORT_CAN_NOT_EMPTY | Backend server port can not empty. |
400 | RealServerPortNotSupport | Real server port not support. |
400 | OperationUnsupported.CreateMasterSlaveServerGroup | This type of backend server is not allowed to attached to singleTunnel or anyTunnel lb. |
400 | IncorrectStatus.RSByPassToas | %s. |
400 | OperationFailed.ActionNotSupport | The loadbalancer does not support such action. |
400 | RsTunnelIp2VmNameConflict | %s. |
400 | NetworkConflict | %s. |
400 | InvalidParam.TagValue | %s. |
400 | InvalidParam.TagKey | %s. |
400 | SizeLimitExceeded.Tag | %s. |
400 | MissingParam.TagKey | The param MissingParam.TagKey is missing. |
For a list of error codes, visit the Service error codes.
Change history
Change time | Summary of changes | Operation | ||||
---|---|---|---|---|---|---|
2023-06-02 | The Error code has changed | see changesets | ||||
|