Managing Instance Configurations

Scenario

Configuration parameters of each role instance can be modified. In the scenario where instances are migrated to a new cluster or the service is redeployed, the cluster administrator can import or export all configuration data of a service on FusionInsight Manager to quickly copy configuration results.

FusionInsight Manager can manage configuration parameters of a single role instance. Modifying configuration parameters and importing or exporting instance configurations do not affect other instances.

Impact on the System

After modifying the configuration of a role instance, you need to restart the instance if the instance status is Expired. The role instance is unavailable during restart.

Modifying Instance Configuration

1. Log in to FusionInsight Manager.
2. Choose Cluster > Name of the desired cluster > Services.
3. On the page that is displayed, click the Instance tab.
4. Click the specified instance and select Instance Configuration.

   By default, Basic Configuration is displayed. To modify more parameters, click All Configurations. All parameter categories supported by the instance are displayed on the All Configurations tab page.

   Figure 1 Instance configurations
   

5. In the navigation tree, select the specified parameter category and change the parameter values on the right.

   If you are not sure about the location of a parameter, you can enter the parameter name in search box in the upper right corner. The system searches for the parameter in real time and displays the result.

6. Click Save. In the confirmation dialog box, click OK.

   Wait until the message "Operation succeeded." is displayed. Click Finish.

   The configuration is modified.

   

   After the configuration parameters of a role instance are modified, you need to restart the instance if the instance status is Expired. You can select the expired instance on the Instances page and choose More > Restart Instance.

   If the is displayed before a parameter, this parameter takes effect dynamically. After the configuration is saved, the parameter value is automatically updated to the configuration file. is supported only in MRS 3.2.0 or later.

Exporting/Importing Instance Configuration

1. Log in to FusionInsight Manager.
2. Choose Cluster > Name of the desired cluster > Services.
3. Click the specified service name on the service management page. On the displayed page, click the Instance tab.
4. Click the specified instance and select Instance Configurations.
5. Click Export to export the configuration parameter file to the local host.
6. On the Instance Configurations page, click Import, select the configuration parameter file of the instance, and import the file.