forked from docs/doc-exports
604 lines
57 KiB
ReStructuredText
604 lines
57 KiB
ReStructuredText
Creating a Backend Server Group
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===============================
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Function
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^^^^^^^^
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This API is used to create a backend server group.
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Constraints
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^^^^^^^^^^^
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If **session-persistence** is specified, **cookie_name** is available only when **type** is set to **APP_COOKIE**.
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If **listener_id** is specified, the listener must have no backend server group associated.
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URI
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^^^
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POST /v3/{project_id}/elb/pools
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.. table:: **Table 1** Path parameters
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========== ========= ====== =========================
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Parameter Mandatory Type Description
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========== ========= ====== =========================
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project_id Yes String Specifies the project ID.
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========== ========= ====== =========================
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Request Parameters
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^^^^^^^^^^^^^^^^^^
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.. table:: **Table 2** Request header parameters
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============ ========= ====== ================================================
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Parameter Mandatory Type Description
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============ ========= ====== ================================================
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X-Auth-Token Yes String Specifies the token used for IAM authentication.
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============ ========= ====== ================================================
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.. table:: **Table 3** Request body parameters
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+-----------+-----------+---------------------------------------------------------------------+-------------------------------------+
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| Parameter | Mandatory | Type | Description |
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+===========+===========+=====================================================================+=====================================+
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| pool | Yes | `CreatePoolOption <#CreatePool__request_CreatePoolOption>`__ object | Specifies the backend server group. |
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+-----------+-----------+---------------------------------------------------------------------+-------------------------------------+
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.. table:: **Table 4** CreatePoolOption
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| Parameter | Mandatory | Type | Description |
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+=============================+=============================+=============================+=============================+
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| admin_state_up | No | Boolean | Specifies the |
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| | | | administrative status of |
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| | | | the backend server group. |
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| | | | The value can only be |
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| | | | updated to **true**. |
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| | | | |
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| | | | This parameter is |
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| | | | unsupported. Please do not |
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| | | | use it. |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| description | No | String | Provides supplementary |
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| | | | information about the |
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| | | | backend server group. |
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| | | | |
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| | | | Minimum: **0** |
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| | | | |
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| | | | Maximum: **255** |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| lb_algorithm | Yes | String | Specifies the load |
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| | | | balancing algorithm used by |
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| | | | the load balancer to route |
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| | | | requests to backend |
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| | | | servers. |
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| | | | |
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| | | | The value can be one of the |
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| | | | following: |
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| | | | |
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| | | | - **ROUND_ROBIN**: |
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| | | | weighted round robin |
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| | | | |
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| | | | - **LEAST_CONNECTIONS**: |
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| | | | weighted least |
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| | | | connections |
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| | | | |
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| | | | - **SOURCE_IP**: source IP |
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| | | | hash |
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| | | | |
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| | | | When the value is |
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| | | | **SOURCE_IP**, the weights |
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| | | | of backend servers are |
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| | | | invalid. |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| listener_id | No | String | Specifies the ID of the |
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| | | | listener associated with |
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| | | | the backend server group. |
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| | | | Specify either |
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| | | | **listener_id** or |
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| | | | **loadbalancer_id**, or |
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| | | | both of them. |
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| | | | |
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| | | | Minimum: **1** |
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| | | | |
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| | | | Maximum: **36** |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| loadbalancer_id | No | String | Specifies the ID of the |
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| | | | associated load balancer. |
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| | | | Specify either |
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| | | | **listener_id** or |
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| | | | **loadbalancer_id**, or |
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| | | | both of them. |
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| | | | |
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| | | | Minimum: **1** |
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| | | | |
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| | | | Maximum: **36** |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| name | No | String | Specifies the backend |
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| | | | server group name. |
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| | | | |
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| | | | Minimum: **0** |
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| | | | |
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| | | | Maximum: **255** |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| project_id | No | String | Specifies the project ID. |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| protocol | Yes | String | Specifies the protocol used |
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| | | | by the backend server group |
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| | | | to receive requests. TCP, |
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| | | | UDP, and HTTP are |
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| | | | supported. |
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| | | | |
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| | | | - For UDP listeners, the |
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| | | | protocol of the backend |
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| | | | server group must be |
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| | | | UDP. |
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| | | | |
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| | | | - For TCP listeners, the |
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| | | | protocol of the backend |
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| | | | server group must be |
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| | | | TCP. |
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| | | | |
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| | | | - For HTTP or HTTPS |
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| | | | listeners, the protocol |
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| | | | of the backend server |
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| | | | group must be HTTP. |
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| | | | Minimum: **1** |
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| | | | Maximum: **255** |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| session_persistence | No | `CreatePoolSess | Specifies whether to enable |
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| | | ionPersistenceOption <#Crea | sticky sessions. |
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| | | tePool__request_CreatePoolS | |
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| | | essionPersistenceOption>`__ | |
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| | | object | |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| slow_start | No | `CreatePoolSlowStartOpti | Specifies whether to enable |
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| | | on <#CreatePool__request_Cr | slow start. After you |
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| | | eatePoolSlowStartOption>`__ | enable slow start, new |
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| | | object | backend servers added to |
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| | | | the backend server group |
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| | | | are warmed up, and the |
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| | | | number of requests they can |
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| | | | receive increases linearly |
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| | | | during the configured slow |
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| | | | start duration. |
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| | | | |
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| | | | This parameter can be used |
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| | | | when the protocol of the |
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| | | | backend server group is |
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| | | | HTTP or HTTPS. An error |
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| | | | will be returned if the |
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| | | | protocol is not HTTP or |
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| | | | HTTPS. |
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| | | | |
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| | | | This parameter is |
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| | | | unsupported. Please do not |
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| | | | use it. |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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.. table:: **Table 5** CreatePoolSessionPersistenceOption
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| Parameter | Mandatory | Type | Description |
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+=============================+=============================+=============================+=============================+
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| cookie_name | No | String | Specifies the cookie name. |
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| | | | This parameter will take |
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| | | | effect only when **type** |
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| | | | is set to **APP_COOKIE**. |
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| | | | Otherwise, an error will be |
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| | | | returned. |
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| | | | |
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| | | | The value can contain only |
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| | | | letters, digits, hyphens |
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| | | | (-), underscores (_), and |
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| | | | periods (.). |
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| | | | Minimum: **0** |
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| | | | Maximum: **1024** |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| type | Yes | String | Specifies the sticky |
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| | | | session type. The value can |
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| | | | be **SOURCE_IP**, |
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| | | | **HTTP_COOKIE**, or |
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| | | | **APP_COOKIE**. |
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| | | | |
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| | | | - If the protocol of the |
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| | | | backend server group is |
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| | | | TCP or UDP, only |
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| | | | **SOURCE_IP** takes |
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| | | | effect. |
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| | | | |
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| | | | - For dedicated load |
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| | | | balancers, if the |
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| | | | protocol of the backend |
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| | | | server group is HTTP or |
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| | | | HTTPS, the value can |
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| | | | only be **HTTP_COOKIE**. |
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| | | | |
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| | | | - For shared load |
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| | | | balancers, if the |
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| | | | protocol of the backend |
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| | | | server group is HTTP or |
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| | | | HTTPS, the value can be |
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| | | | **HTTP_COOKIE** or |
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| | | | **APP_COOKIE**. |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| persistence_timeout | No | Integer | Specifies the stickiness |
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| | | | duration, in minutes. This |
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| | | | parameter will not take |
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| | | | effect when **type** is set |
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| | | | to **APP_COOKIE**. |
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| | | | |
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| | | | - If the protocol of the |
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| | | | backend server group is |
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| | | | TCP or UDP, the value |
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| | | | ranges from **1** to |
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| | | | **60**, and the default |
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| | | | value is **1**. |
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| | | | |
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| | | | - If the protocol of the |
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| | | | backend server group is |
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| | | | HTTP or HTTPS, the value |
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| | | | ranges from **1** to |
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| | | | **1440**, and the |
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| | | | default value is |
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| | | | **1440**. |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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.. table:: **Table 6** CreatePoolSlowStartOption
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| Parameter | Mandatory | Type | Description |
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+=============================+=============================+=============================+=============================+
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| enable | Yes | Boolean | Specifies whether to enable |
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| | | | slow start. |
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| | | | |
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| | | | **true** indicates that |
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| | | | this function is enabled, |
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| | | | and **false** indicates |
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| | | | this function is disabled. |
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| | | | Default: **false** |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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| duration | Yes | Integer | Specifies the slow start |
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| | | | duration, in seconds. |
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| | | | |
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| | | | The value ranges from |
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| | | | **30** to **1200**, and the |
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| | | | default value is **30**. |
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| | | | |
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| | | | Minimum: **30** |
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| | | | Maximum: **1200** |
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| | | | Default: **30** |
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+-----------------------------+-----------------------------+-----------------------------+-----------------------------+
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Response Parameters
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^^^^^^^^^^^^^^^^^^^
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**Status code: 201**
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.. table:: **Table 7** Response body parameters
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========== ============================================ ===============================================================
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Parameter Type Description
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========== ============================================ ===============================================================
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request_id String Specifies the request ID. The value is automatically generated.
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pool `Pool <#CreatePool__response_Pool>`__ object Specifies the backend server group.
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========== ============================================ ===============================================================
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.. table:: **Table 8** Pool
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| Parameter | Type | Description |
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+=======================================+=======================================+=======================================+
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| admin_state_up | Boolean | Specifies the administrative status |
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| | | of the backend server group. The |
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| | | value can only be updated to |
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| | | **true**. |
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| | | This parameter is unsupported. Please |
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| | | do not use it. |
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| | | Default: **true** |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| description | String | Provides supplementary information |
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| | | about the backend server group. |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| healthmonitor_id | String | Specifies the ID of the health check |
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| | | configured for the backend server |
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| | | group. |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| id | String | Specifies the backend server group |
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| | | ID. |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| lb_algorithm | String | Specifies the load balancing |
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| | | algorithm used by the load balancer |
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| | | to route requests to backend servers |
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| | | in the backend server group. |
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| | | |
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| | | The value can be **ROUND_ROBIN** |
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| | | (weighted round robin), |
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| | | **LEAST_CONNECTIONS** (weighted least |
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| | | connections), or **SOURCE_IP** |
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| | | (source IP hash). |
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| | | When the value is **SOURCE_IP**, the |
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| | | **weight** parameter is invalid. |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| listeners | Array of | Lists the listeners associated with |
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| | `ListenerRef < | the backend server group. |
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| | #CreatePool__response_ListenerRef>`__ | |
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| | objects | |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| loadbalancers | Array of | Lists the IDs of load balancers |
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| | `LoadBalancerRef <#Cre | associated with the backend server |
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| | atePool__response_LoadBalancerRef>`__ | group. |
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| | objects | |
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| | | If only **listener_id** is specified |
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| | | during the creation of the backend |
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| | | server group, the ID of the |
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| | | **loadbalancers** parameter in the |
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| | | response is the ID of the load |
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| | | balancer to which the listener is |
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| | | added. |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| members | Array of | Lists the backend servers in the |
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| | `MemberRef | backend server group. |
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| | <#CreatePool__response_MemberRef>`__ | |
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| | objects | |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| name | String | Specifies the backend server group |
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| | | name. |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| project_id | String | Specifies the project ID. |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| protocol | String | Specifies the protocol used by the |
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| | | backend server group to receive |
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| | | requests. The protocol can be TCP, |
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| | | UDP, or HTTP. |
|
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| | | |
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| | | - For UDP listeners, the protocol of |
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| | | the backend server group must be |
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| | | UDP. |
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| | | |
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| | | - For TCP listeners, the protocol of |
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| | | the backend server group must be |
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| | | TCP. |
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| | | |
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| | | - For HTTP or HTTPS listeners, the |
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| | | protocol of the backend server |
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| | | group must be HTTP. |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| session_persistence | `SessionPersistence <#Create | Specifies the sticky session. |
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| | Pool__response_SessionPersistence>`__ | |
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| | object | |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| ip_version | String | Specifies the IP version supported by |
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| | | the backend server group. |
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| | | |
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| | | - Shared load balancers: The default |
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| | | value is **v4**. |
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| | | |
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| | | - Dedicated load balancers: The |
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| | | value can be **dualstack**, |
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| | | **v4**, or **v6**. |
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| | | |
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| | | When the protocol of the backend |
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| | | server group is TCP or UDP, |
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| | | **ip_version** is set to |
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| | | **dualstack**, indicating that both |
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| | | IPv4 and IPv6 are supported. |
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| | | |
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| | | When the protocol of the backend |
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| | | server group is HTTP, **ip_version** |
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| | | is set to **v4**. |
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| | | |
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| | | IPv6 is unsupported. Only **v4** is |
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| | | returned. |
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| | | |
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| | | Default: **dualstack** |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| slow_start | `SlowStart | Specifies whether to enable slow |
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| | <#CreatePool__response_SlowStart>`__ | start. After you enable slow start, |
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| | object | new backend servers added to the |
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| | | backend server group are warmed up, |
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| | | and the number of requests they can |
|
|
| | | receive increases linearly during the |
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| | | configured slow start duration. |
|
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| | | |
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| | | This parameter can be used when the |
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| | | protocol of the backend server group |
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| | | is HTTP or HTTPS. An error will be |
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| | | returned if the protocol is not HTTP |
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| | | or HTTPS. |
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| | | |
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| | | This parameter is unsupported. Please |
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| | | do not use it. |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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.. table:: **Table 9** ListenerRef
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========= ====== ==========================
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Parameter Type Description
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========= ====== ==========================
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id String Specifies the listener ID.
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========= ====== ==========================
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.. table:: **Table 10** LoadBalancerRef
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========= ====== ===============================
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Parameter Type Description
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========= ====== ===============================
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id String Specifies the load balancer ID.
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========= ====== ===============================
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.. table:: **Table 11** MemberRef
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========= ====== ================================
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Parameter Type Description
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========= ====== ================================
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id String Specifies the backend server ID.
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========= ====== ================================
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.. table:: **Table 12** SessionPersistence
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| Parameter | Type | Description |
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+=======================================+=======================================+=======================================+
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| cookie_name | String | Specifies the cookie name. |
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| | | |
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| | | This parameter will take effect only |
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| | | when **type** is set to |
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| | | **APP_COOKIE**. |
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| | | |
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| | | The value can contain only letters, |
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| | | digits, hyphens (-), underscores (_), |
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| | | and periods (.). |
|
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| | | |
|
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| | | Minimum: **0** |
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| | | |
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| | | Maximum: **1024** |
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+---------------------------------------+---------------------------------------+---------------------------------------+
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| type | String | Specifies the sticky session type. |
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| | | The value can be **SOURCE_IP**, |
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| | | **HTTP_COOKIE**, or **APP_COOKIE**. |
|
|
| | | |
|
|
| | | - If the protocol of the backend |
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| | | server group is TCP or UDP, only |
|
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| | | **SOURCE_IP** takes effect. |
|
|
| | | |
|
|
| | | - For dedicated load balancers, if |
|
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| | | the protocol of the backend server |
|
|
| | | group is HTTP or HTTPS, the value |
|
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| | | can only be **HTTP_COOKIE**. |
|
|
| | | |
|
|
| | | - For shared load balancers, if the |
|
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| | | protocol of the backend server |
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| | | group is HTTP or HTTPS, the value |
|
|
| | | can be **HTTP_COOKIE** or |
|
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| | | **APP_COOKIE**. |
|
|
+---------------------------------------+---------------------------------------+---------------------------------------+
|
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| persistence_timeout | Integer | Specifies the stickiness duration, in |
|
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| | | minutes. This parameter will not take |
|
|
| | | effect when **type** is set to |
|
|
| | | **APP_COOKIE**. |
|
|
| | | |
|
|
| | | - If the protocol of the backend |
|
|
| | | server group is TCP or UDP, the |
|
|
| | | value ranges from **1** to **60**, |
|
|
| | | and the default value is **1**. |
|
|
| | | |
|
|
| | | - If the protocol of the backend |
|
|
| | | server group is HTTP or HTTPS, the |
|
|
| | | value ranges from **1** to |
|
|
| | | **1440**, and the default value is |
|
|
| | | **1440**. |
|
|
+---------------------------------------+---------------------------------------+---------------------------------------+
|
|
|
|
.. table:: **Table 13** SlowStart
|
|
|
|
+---------------------------------------+---------------------------------------+---------------------------------------+
|
|
| Parameter | Type | Description |
|
|
+=======================================+=======================================+=======================================+
|
|
| enable | Boolean | Specifies whether to enable slow |
|
|
| | | start. |
|
|
| | | |
|
|
| | | **true** indicates that this function |
|
|
| | | is enabled, and **false** indicates |
|
|
| | | this function is disabled. |
|
|
| | | |
|
|
| | | Default: **false** |
|
|
+---------------------------------------+---------------------------------------+---------------------------------------+
|
|
| duration | Integer | Specifies the slow start duration, in |
|
|
| | | seconds. |
|
|
| | | |
|
|
| | | The value ranges from **30** to |
|
|
| | | **1200**, and the default value is |
|
|
| | | **30**. |
|
|
| | | |
|
|
| | | Minimum: **30** |
|
|
| | | |
|
|
| | | Maximum: **1200** |
|
|
| | | |
|
|
| | | Default: **30** |
|
|
+---------------------------------------+---------------------------------------+---------------------------------------+
|
|
|
|
Example Requests
|
|
^^^^^^^^^^^^^^^^
|
|
|
|
Adding an HTTP backend server group
|
|
|
|
.. code:: screen
|
|
|
|
POST
|
|
https://{elb_endpoint}/v3/99a3fff0d03c428eac3678da6a7d0f24/elb/pools
|
|
|
|
{
|
|
"pool" : {
|
|
"name" : "My pool",
|
|
"lb_algorithm" : "LEAST_CONNECTIONS",
|
|
"listener_id" : "0b11747a-b139-492f-9692-2df0b1c87193",
|
|
"protocol" : "HTTP",
|
|
"slow_start" : {
|
|
"enable" : true,
|
|
"duration" : 50
|
|
}
|
|
}
|
|
}
|
|
|
|
Example Responses
|
|
^^^^^^^^^^^^^^^^^
|
|
|
|
**Status code: 201**
|
|
|
|
Successful request.
|
|
|
|
.. code:: screen
|
|
|
|
{
|
|
"pool" : {
|
|
"lb_algorithm" : "LEAST_CONNECTIONS",
|
|
"protocol" : "HTTP",
|
|
"description" : "",
|
|
"admin_state_up" : true,
|
|
"loadbalancers" : [ {
|
|
"id" : "098b2f68-af1c-41a9-8efd-69958722af62"
|
|
} ],
|
|
"project_id" : "99a3fff0d03c428eac3678da6a7d0f24",
|
|
"listeners" : [ {
|
|
"id" : "0b11747a-b139-492f-9692-2df0b1c87193"
|
|
} ],
|
|
"members" : [ ],
|
|
"id" : "36ce7086-a496-4666-9064-5ba0e6840c75",
|
|
"name" : "My pool",
|
|
"ip_version" : "v4",
|
|
"slow_start" : {
|
|
"enable" : true,
|
|
"duration" : 50
|
|
}
|
|
},
|
|
"request_id" : "2d974978-0733-404d-a21a-b29204f4803a"
|
|
}
|
|
|
|
Status Codes
|
|
^^^^^^^^^^^^
|
|
|
|
=========== ===================
|
|
Status Code Description
|
|
=========== ===================
|
|
201 Successful request.
|
|
=========== ===================
|
|
|
|
Error Codes
|
|
^^^^^^^^^^^
|
|
|
|
See `Error Codes <errorcode.html>`__.
|
|
|
|
**Parent topic:** `Backend Server Group <topic_300000006.html>`__
|