This article is shared from the Huawei Cloud Community " Cloud Lesson | Cluster Health Check on MRS Basic Operations " by Yue Shi Fengyun.
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MapReduce service provides users with massive data management and analysis functions to quickly mine the value data you need from structured and unstructured massive data. FusionInsight Manager in the cluster will provide an enterprise-level unified management platform for the cluster:
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Provides cluster status monitoring function, so you can quickly grasp the running status of services and hosts.
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Provides graphical indicator monitoring and customization so that you can obtain key information of the system in a timely manner.
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Provides the configuration function of service attributes to meet the performance requirements of your actual business.
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Provides operation functions for clusters, services, and role instances to meet your operational needs such as one-click start and stop.
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Providing permission management and auditing functions, you can set access control and manage operation logs.
This practice is based on Huawei Cloud MapReduce service and is used to guide you to complete the health check of the cluster during daily operation and maintenance after creating an MRS cluster to ensure that the cluster parameters, configuration, and monitoring are normal and can run stably for a long time.
Health check scenarios mainly include the following scenarios:
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Perform health checks on the entire cluster
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Perform health checks on specified services in the cluster
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Perform health checks on specified nodes in the cluster
Create MRS cluster
Log in to the Huawei Cloud console , select "EI Enterprise Intelligence > MapReduce Service", click "Purchase Cluster", select "Quick Purchase", fill in the configuration parameters, and click "Next".
Table 1 Configuration parameters
Parameter item |
Value example |
| area |
North China-Beijing 4 |
| Billing model |
Pay as you go |
| Cluster name |
MRS01 |
| Cluster version |
MRS 3.1.0 |
| Component selection |
HBase query cluster |
| Availability Zone |
Availability Zone 1 |
| virtual private cloud |
vpc-01 |
| subnet |
subnet-01 |
| Corporate projects |
default |
| username |
root/admin |
| password |
set password. This password is used to log in to the cluster management page and ECS nodes. |
| Confirm Password |
Enter the set user password again |
| Communication security authorization |
Check "Confirm Authorization" |
Perform a health check
Perform health checks on all services
Log in to the MRS management console page.
Select "Cluster List > Existing Cluster", click the specified cluster name in the cluster list, and enter the cluster information page.
Click "Go to Manager" after "Cluster Management Page" and configure elastic IP information in the pop-up window.
If you do not have an elastic public IP, you can first click "Manage Elastic Public IP" to purchase an elastic public IP, and then select the purchased elastic public IP in the Elastic Public IP drop-down box.
Click OK to enter the Manager login page.
Log in as the admin user, and the password is the admin user password set when the MRS cluster was created .
On the FusionInsight Manager homepage, select "···> Health Check" after the name of the cluster to be operated to start all service health checks.
You can also select "Operation and Maintenance > Health Check" to view the health check details of the current cluster.
On the health check page, click "Configure" to set scheduled health check tasks.
Manually perform health checks for individual services
Log in to FusionInsight Manager.
Select "Cluster > Service > Name of component to be checked", such as "HDFS".
Enter the component "Overview" page and select "More > Health Check" to start the specified service health check.
Manually perform host health checks
Log in to FusionInsight Manager.
Click Host.
Check the checkbox in front of the host to be operated.
Select "More > Health Check" to start the health check of the specified host.
If you want to view the results of the health check, you can directly click "Export Report" in the upper left corner of the check list and choose to export the results. If you find a problem, you can click View Help.
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