Creating a Cluster
The first step of using MRS is to a cluster. This section describes how to create a cluster on the MRS management console.
Procedure
- Log in to the MRS console.
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When creating a cluster, pay attention to quota notification. If a resource quota is insufficient, increase the resource quota as prompted and create a cluster.
- On the page for a cluster, click the Custom Config tab.
- Configure cluster software information.
- Region: Use the default value.
- Cluster Name: You can use the default name. However, you are advised to include a project name abbreviation or date for consolidated memory and easy distinguishing, for example, mrs_20180321.
- Cluster Version: Select the latest version, which is the default value.
- Cluster Type: Use the default Analysis Cluster.
- Component: Select components such as Spark2x, HBase, and Hive for the analysis cluster. For a streaming cluster, select components such as Kafka and Storm. For a hybrid cluster, you can select the components of the analysis cluster and streaming cluster based on service requirements.
- Metadata: Retain the default value.
For versions earlier than MRS 3.x, select components such as Spark, HBase, and Hive for the analysis cluster.
- Click Next.
- AZ: Use the default value.
- VPC: Use the default value. If there is no available VPC, click View VPC to access the VPC console and create a new VPC.
- Subnet: Use the default value.
- Security Group: Select Auto create.
- EIP: Select Bind later.
- Enterprise Project: Use the default value.
- Instance Specifications: Select General Computing S3 -> 8 vCPUs | 16 GB (s3.2xlarge.2) for both Master and Core nodes.
- System Disk: Select Common I/O and retain the default settings.
- Data Disk: Select Common I/O and retain the default settings.
- Instance Count: The default number of Master nodes is 2, and that of Core nodes is 3.
- Click Next. The Set Advanced Options tab page is displayed. Configure the following parameters. Retain the default settings for the other parameters.
- Kerberos authentication:
- Kerberos Authentication: Disable Kerberos authentication.
- Username: name of the Manager administrator. admin is used by default.
- Password: password of the Manager administrator.
- Login Mode: Select a mode for logging in to an ECS.
- Password: Set a password for logging in to an ECS.
- Key Pair: Select a key pair from the drop-down list. Select "I acknowledge that I have obtained private key file SSHkey-xxx and that without this file I will not be able to log in to my ECS." If you have never created a key pair, click View Key Pair to create or import a key pair. And then, obtain a private key file.
- Secure Communications: Select Enable.
- Kerberos authentication:
- Click Apply Now.
If Kerberos authentication is enabled for a cluster, check whether Kerberos authentication is required. If yes, click Continue. If no, click Back to disable Kerberos authentication and then create a cluster.
- Click Back to Cluster List to view the cluster status.
It takes some time to create a cluster. The initial status of the cluster is Starting. After the cluster has been created successfully, the cluster status becomes Running.
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