diff --git a/umn/source/_static/images/en-us_image_0000001685147546.png b/umn/source/_static/images/en-us_image_0000001685147546.png deleted file mode 100644 index 8ec30c1..0000000 Binary files a/umn/source/_static/images/en-us_image_0000001685147546.png and /dev/null differ diff --git a/umn/source/_static/images/en-us_image_0000001700277302.png b/umn/source/_static/images/en-us_image_0000001700277302.png new file mode 100644 index 0000000..f287a55 Binary files /dev/null and b/umn/source/_static/images/en-us_image_0000001700277302.png differ diff --git a/umn/source/_static/images/en-us_image_0000001749511672.png b/umn/source/_static/images/en-us_image_0000001749511672.png new file mode 100644 index 0000000..4597538 Binary files /dev/null and b/umn/source/_static/images/en-us_image_0000001749511672.png differ diff --git a/umn/source/change_history.rst b/umn/source/change_history.rst index 1b02894..dfb1303 100644 --- a/umn/source/change_history.rst +++ b/umn/source/change_history.rst @@ -8,6 +8,8 @@ Change History +-----------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+ | Released On | Description | +===================================+=======================================================================================================================================================+ +| 2023-12-15 | Optimized the description of tags in :ref:`Tags `. | ++-----------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+ | 2023-10-20 | Modified the following content: | | | | | | Optimized the directory for monitoring management and the procedure for viewing monitoring information in :ref:`Monitoring Management `. | diff --git a/umn/source/data_node_management/splitting_read_and_write_requests.rst b/umn/source/data_node_management/splitting_read_and_write_requests.rst index 3377003..794a895 100644 --- a/umn/source/data_node_management/splitting_read_and_write_requests.rst +++ b/umn/source/data_node_management/splitting_read_and_write_requests.rst @@ -26,14 +26,14 @@ Procedure #. On the **Instances** page, locate the required DDM instance and click its name. #. In the navigation pane, choose **Data Nodes**. -#. On the displayed page, locate the target instance and click **Configure Read Weight** in the **Operation** column. The read weight ranges from 0 to 100. +#. On the displayed page, locate the target instance and click **Configure Read Weight** in the **Operation** column. The read weight can be 0 to 100. - If you create a read replica for the associated instance, the read replica will handle all separated read requests by default. To re-assign read/write requests, you can configure read weights of the associated instance and its read replica. - - After a read weight is set for an instance, the primary instance and its read replica process read requests based on the following formula: + - After the read weights are configured, the primary instance and its read replica will handle read requests according to the following formulas: - - Read requests processed by the primary instance: Read weight of the primary instance/Total read weights of the primary instance and its read replica - - Read requests processed by the read replica: Read weights of the read replica/Total read weights of the primary instance and its read replica + - Primary instance: Read weight of primary instance/Total read weights of primary instance and read replica + - Read replica: Read weight of read replica/Total read weights of primary instance and read replica For example: If an RDS for MySQL instance contains one primary instance and one read replica and read weights of the primary instance and its read replica are 20 and 80 respectively, they will process read requests in the ratio of 1:4. In other words, the primary instance processes 1/4 of read requests and read replica processes 3/4. Write requests are automatically routed to the primary instance. diff --git a/umn/source/getting_started/step_1_create_a_ddm_instance_and_an_rds_for_mysql_instance.rst b/umn/source/getting_started/step_1_create_a_ddm_instance_and_an_rds_for_mysql_instance.rst index 95cde68..074efff 100644 --- a/umn/source/getting_started/step_1_create_a_ddm_instance_and_an_rds_for_mysql_instance.rst +++ b/umn/source/getting_started/step_1_create_a_ddm_instance_and_an_rds_for_mysql_instance.rst @@ -81,28 +81,15 @@ Procedure | | **Tag key: This parameter is mandatory and cannot be null.** | | | | | | - Must be unique for each instance. | - | | | | | - Can only consist of digits, letters, underscores (_), hyphens (-), and at sign (@). | - | | | | | - Can include 1 to 36 characters. | - | | | - | | - Cannot be an empty string or start with **\_sys\_**, and cannot start or end with a space. | - | | | - | | - Cannot contain the following characters: | - | | | - | | Non-printable ASCII characters (0-31), "``*``", "<", ">", "\\", ",", "|", "/" | + | | - Cannot be an empty string or start with **\_sys\_**. | | | | | | **Tag value: This parameter is mandatory.** | | | | | | - Is an empty string by default. | - | | | | | - Can only consist of digits, letters, underscores (_), hyphens (-), and at sign (@). | - | | | | | - Can contain 0 to 43 characters. | - | | | - | | - Cannot contain the following characters: | - | | | - | | Non-printable ASCII characters (0-31), "``*``", "<", ">", "\\", ",", "|" | +-----------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ #. After the configuration is complete, click **Next** at the bottom of the page. diff --git a/umn/source/instance_management/creating_a_ddm_instance.rst b/umn/source/instance_management/creating_a_ddm_instance.rst index 5a11eb1..6f1907a 100644 --- a/umn/source/instance_management/creating_a_ddm_instance.rst +++ b/umn/source/instance_management/creating_a_ddm_instance.rst @@ -79,28 +79,15 @@ Procedure | | **Tag key: This parameter is mandatory and cannot be null.** | | | | | | - Must be unique for each instance. | - | | | | | - Can only consist of digits, letters, underscores (_), hyphens (-), and at sign (@). | - | | | | | - Can include 1 to 36 characters. | - | | | - | | - Cannot be an empty string or start with **\_sys\_**, and cannot start or end with a space. | - | | | - | | - Cannot contain the following characters: | - | | | - | | Non-printable ASCII characters (0-31), "``*``", "<", ">", "\\", ",", "|", "/" | + | | - Cannot be an empty string or start with **\_sys\_**. | | | | | | **Tag value: This parameter is mandatory.** | | | | | | - Is an empty string by default. | - | | | | | - Can only consist of digits, letters, underscores (_), hyphens (-), and at sign (@). | - | | | | | - Can contain 0 to 43 characters. | - | | | - | | - Cannot contain the following characters: | - | | | - | | Non-printable ASCII characters (0-31), "``*``", "<", ">", "\\", ",", "|" | +-----------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ #. After the configuration is complete, click Create Now at the bottom of the page. diff --git a/umn/source/instance_management/modifying_parameters_of_a_ddm_instance.rst b/umn/source/instance_management/modifying_parameters_of_a_ddm_instance.rst index 7582e20..7221aed 100644 --- a/umn/source/instance_management/modifying_parameters_of_a_ddm_instance.rst +++ b/umn/source/instance_management/modifying_parameters_of_a_ddm_instance.rst @@ -97,10 +97,7 @@ Procedure +----------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------+ | force_read_master_in_transaction | Whether SQL statements involved in each transaction are read from the master node. | OFF or ON | OFF | | | | | | - | | .. caution:: | | | - | | | | | - | | CAUTION: | | | - | | This parameter is available in version 3.0.9 or later. If this feature is enabled in version 3.0.9 but the version is downgraded to 3.0.9 below, the feature keeps enabled when the version returns to 3.0.9 or later. | | | + | | Note: This parameter is available in version 3.0.9 or later. If this feature is enabled in version 3.0.9 but the version is downgraded to 3.0.9 below, the feature keeps enabled when the version returns to 3.0.9 or later. | | | +----------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------+ By default, DDM allows you to modify only the preceding instance parameters. If you need to modify other parameters in some special scenarios such as data migration, contact technical support. diff --git a/umn/source/service_overview/core_functions.rst b/umn/source/service_overview/core_functions.rst index 69063f3..a8bc762 100644 --- a/umn/source/service_overview/core_functions.rst +++ b/umn/source/service_overview/core_functions.rst @@ -56,12 +56,8 @@ Related Services ELB distributes incoming traffic to multiple backend servers based on the forwarding policy to balance workloads. So, it can expand external service capabilities of DDM and eliminate single points of failure (SPOFs) to improve service availability. -- Data Admin Service (DAS) - DAS provides a visualized GUI interface for you to connect to and manage cloud databases. - - -.. figure:: /_static/images/en-us_image_0000001685147546.png +.. figure:: /_static/images/en-us_image_0000001700277302.png :alt: **Figure 1** Relationship among DDM, VPC, ECS, and data nodes **Figure 1** Relationship among DDM, VPC, ECS, and data nodes diff --git a/umn/source/sql_syntax/functions.rst b/umn/source/sql_syntax/functions.rst index aa9fcdc..4977beb 100644 --- a/umn/source/sql_syntax/functions.rst +++ b/umn/source/sql_syntax/functions.rst @@ -37,7 +37,7 @@ Supported Functions +---------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | CONCAT | SELECT product_id, product_name, CONCAT( product_id , '(', product_name ,')' ) AS product_test FROM Products ORDER BY product_id | +---------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ - | + | SELECT 3 \* 2+5-100/50 | + | |image2| | SELECT 3 \* 2+5-100/50 | +---------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | ``-`` | SELECT 3 \* 2+5-100/50 | +---------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ @@ -106,3 +106,6 @@ Unsupported Functions =========== ========================================== ROW_COUNT() Function **ROW_COUNT()** is not supported. =========== ========================================== + +.. |image1| image:: /_static/images/en-us_image_0000001749511672.png +.. |image2| image:: /_static/images/en-us_image_0000001749511672.png diff --git a/umn/source/tags.rst b/umn/source/tags.rst index a309fdb..e225e32 100644 --- a/umn/source/tags.rst +++ b/umn/source/tags.rst @@ -30,35 +30,22 @@ Adding a tag .. table:: **Table 1** Parameter description - +-----------------------------------+-----------------------------------------------------------------------------------------------+ - | Item | Description | - +===================================+===============================================================================================+ - | Tag key | This parameter is mandatory and cannot be null. The key: | - | | | - | | - Must be unique for each instance. | - | | | - | | - Can only consist of digits, letters, underscores (_), hyphens (-), and at sign (@). | - | | | - | | - Can include 1 to 36 characters. | - | | | - | | - Cannot be an empty string or start with **\_sys\_**, and cannot start or end with a space. | - | | | - | | - Cannot contain the following characters: | - | | | - | | Non-printable ASCII characters (0-31), "``*``", "<", ">", "\\", ",", "|", "/" | - +-----------------------------------+-----------------------------------------------------------------------------------------------+ - | Tag value | This parameter is mandatory. The value: | - | | | - | | - Is an empty string by default. | - | | | - | | - Can only consist of digits, letters, underscores (_), hyphens (-), and at sign (@). | - | | | - | | - Can contain 0 to 43 characters. | - | | | - | | - Cannot contain the following characters: | - | | | - | | Non-printable ASCII characters (0-31), "``*``", "<", ">", "\\", ",", "|" | - +-----------------------------------+-----------------------------------------------------------------------------------------------+ + +-----------------------------------+----------------------------------------------------------------------------------------+ + | Item | Description | + +===================================+========================================================================================+ + | Tag key | This parameter is mandatory and cannot be null. The key: | + | | | + | | - Must be unique for each instance. | + | | - Can only consist of digits, letters, underscores (_), hyphens (-), and at sign (@). | + | | - Can include 1 to 36 characters. | + | | - Cannot be an empty string or start with **\_sys\_**. | + +-----------------------------------+----------------------------------------------------------------------------------------+ + | Tag value | This parameter is mandatory. The value: | + | | | + | | - Is an empty string by default. | + | | - Can only consist of digits, letters, underscores (_), hyphens (-), and at sign (@). | + | | - Can contain 0 to 43 characters. | + +-----------------------------------+----------------------------------------------------------------------------------------+ #. View and manage the tag on the **Tags** page. diff --git a/umn/source/task_center.rst b/umn/source/task_center.rst index f80a4dd..00d6db4 100644 --- a/umn/source/task_center.rst +++ b/umn/source/task_center.rst @@ -11,18 +11,18 @@ You can view the progress and results of asynchronous tasks on the **Task Center The following tasks can be viewed: - - Creating a DDM instance + - Creating a DDM Instance - Deleting a DDM instance - - Changing class of a DDM instance + - Changing node class - Scaling out a DDM instance - Scaling in a DDM instance - Restarting a DDM instance - - Binding an EIP to a DDM instance - - Unbinding an EIP from a DDM instance - - Restoring data from current DDM instance + - Binding an EIP + - Unbinding an EIP + - Restoring a DDM instance - Importing schema information - Configuring shards - - Retrying shard configuration + - Retrying shards configuration - Deleting a backup - Creating a group - Deleting a group