Creating a Cluster¶
The first step of using MRS is to create a cluster. This section describes how to create a cluster on the MRS management console.
Procedure¶
Log in to the MRS console.
Click Create Cluster, the Create Cluster page is displayed
Note
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 create 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 Type: Use the default Analysis Cluster.
Cluster Version: Select the latest version, which is the default value.
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.
Component Port: Use the default Open source.
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.
CPU Architecture: Use the default value.
Common Template: Select a template based on service requirements.
Cluster Nodes
Node Count: the number of nodes you want to purchase. For MRS 3.x clusters, the default value is 3. You can set the value as you need.
Instance Specifications: Retain the default settings for master and core nodes or select proper specifications based on service requirements.
System Disk: Retain the default Ultra-high I/O and storage capacity.
Data Disk: Retain the default Ultra-high I/O, storage capacity, and quantity.
Topology Adjustment: Retain the default value.
Click Next. The Set Advanced Options tab page is displayed. Configure the following parameters. Retain the default settings for the other parameters.
Kerberos Authentication: Disable Kerberos authentication.
Username: name of the Manager administrator. admin is used by default.
Password: password of the Manager administrator.
Confirm Password: Enter the password again.
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.
Set Advanced Options: To configure some advanced parameters, select Configure.
Secure Communications: Select Enable.
Click Next.
Configure: Confirm the parameters configured in the Configure Software, Configure Hardware, and Set Advanced Options areas.
Select the check box for Secure Communications.
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.