Create a binlog cluster

A binlog cluster is an external service that comprises one or more binlog servers. When the binlog service is started for a tenant in a binlog cluster with multiple binlog servers, a binlog server is selected based on the load balancing logic. When any binlog server fails, a functioning binlog server in the cluster will take over its services.

You can create a binlog cluster based on your business needs.

Prerequisites

You have logged in to the OceanBase Cloud Platform (OCP) console and been assigned the ADMIN or ORG_ADMIN role.

Procedure

1. Log on to the OCP console. In the left-side navigation pane, click Binlog Service .

2. On the Cluster List page, click Create Binlog Cluster in the upper-right corner.

3. On the Create Binlog Cluster page, configure the basic information of the cluster.

   Parameter	Description
   Binlog Cluster Name	Enter a name for the binlog cluster. The name must start with a letter and end with a letter or a digit. It can contain letters, digits, and underscores (_). It must be 2 to 32 characters in length.
   Software Version	The software version of the binlog cluster. If the required software package is unavailable in the list, you can click Upload Package below the list to upload one.
   Access Address	The access address of the binlog cluster, which is used for request forwarding and load balancing during the communication between OBProxy and the binlog cluster.
   Access Port	The access port of the binlog cluster, which is 2983 by default. You can change the access port.

4. Specify the information of the MetaDB.

   You need to specify the information about a MySQL tenant for storing the metadata of the binlog service. We recommend that you do not use a business cluster as the MetaDB.

   Parameter	Description
   Cluster Name	Select an existing OceanBase cluster as the MetaDB for the binlog service.
   Tenant Name	Select a MySQL tenant from the cluster.
   Database Username	Select a user in the MySQL tenant.
   Database Name	The name of the MetaDB, which is binlog_database by default. You can change the name.

5. Deploy the binlog cluster.

   Each binlog cluster comprises multiple binlog servers. The following table describes the parameters to be specified for each binlog server.

   Parameter	Description
   IDC	Select the IDC to which the binlog server belongs. A binlog server can belong to only one IDC.
   Model	Optional. If you select a model, the host list is filtered based on the model.
   Host	You can select or add hosts.

6. You can add and configure startup parameters one by one in the Parameter Settings section.

7. You can specify a custom software installation path in the Custom Settings section. The default path is /home/admin/binlogservice. You can change the path.

8. Click Submit .

9. After a cluster creation task is submitted, you can view the task progress in Task Center .

Cluster list

After the cluster is created, you can view the cluster information in the following columns on the Cluster List page: Binlog Cluster Name , Status , Allocated CPU , Allocated Memory , Data Disk Used , Version No. , Created At , and Modified At .

• You can click the name of the cluster to go to its Overview page. For more information, see View information about a binlog cluster.
• You can filter the binlog clusters by status.

Related operations

You can enable the binlog service for a tenant. For more information, see Manage the binlog service for a tenant.