This topic describes how to view the information about an Elastic High Performance Computing (E-HPC) cluster, such as its status, configurations, and control services. This topic also describes how to modify the configurations of the cluster, such as its post-processing script and logon password.
View cluster information
Log on to the E-HPC console.
In the left part of the top navigation bar, select a region.
In the left-side navigation pane, click Cluster.
On the Cluster Details page, click the following tabs to view the corresponding information:
Tab
Description
Overview
You can view the running status of each service component, information about the nodes, shared storage, addons, and cluster activities, and cost estimates. On this page, you can learn about the overall running status of the cluster and view related logs and statistics.
Cluster Configuration
You can view the basic information, networking information, and version information of the cluster. You can modify some basic information items. For more information, see Modify cluster configurations.
Control Services
You can view the running status of the cluster scheduler, the configurations of domain accounts, domain name resolutions, and the real-time running status of the corresponding services. You can also view the details of the management node, including the instance ID, instance type, billing method, image ID, and operating system.
Custom Services
You can view all logon nodes of the cluster and their details, including the node status, service address, and corresponding custom parameters.
Software Application
You can view the list of installed software applications in the cluster, including their names, versions, status, and creation time.
Modify cluster configurations
Log on to the E-HPC console.
In the left part of the top navigation bar, select a region.
In the left-side navigation pane, click Cluster.
On the Cluster Details page, click the Cluster Configuration tab.
In the Basic information section, click Edit.
In the dialog box that appears, modify the following parameters based on your business requirements:
Parameter
Description
Cluster Name
The name of the cluster. The cluster name is displayed on the Cluster page to facilitate identification.
Cluster post-processing script
The script that must be run to perform custom initial operations on a compute node after the node is created.
Maximum number of cluster nodes
The maximum number of nodes that a cluster can contain. This parameter and the Maximum number of cores in the cluster parameter jointly control the cluster size.
Maximum number of cores in the cluster
The maximum number of vCPUs that can be used by the compute nodes in the cluster. This parameter and the Maximum number of cluster nodes parameter jointly control the cluster size.
Cluster Deletion Protection
Whether to enable the deletion protection feature for the cluster. When this feature is enabled, the cluster cannot be released. To release the cluster, you must disable this feature first. This feature helps prevent misoperations.
Resource group
The resource group in which you want to manage the cluster. For more information, see Resource groups.
Confirm the information and click Confirm.
Change the logon password of the cluster
If you forget the logon password of an E-HPC cluster after you create the cluster, you can set a new logon password for the cluster. We recommend that you perform this operation when no job is running.
This operation resets the password of the root user of the logon node, management node, and subsequent compute nodes.
However, it does not reset the password of existing compute nodes. We recommend that you release the existing compute nodes and disable auto scaling for the cluster and queue before you reset the password. This prevents logon failures of newly added nodes. For more information, see Delete nodes and Configure auto scaling of nodes.
After resetting the password, you must restart the involved Elastic Compute Service (ECS) instances in the ECS console to make the new password enter into effect. OS restarts are unable to enforce the new password. For more information, see Restart an instance.
Go to the Cluster List page.
Log on to the E-HPC console.
In the left part of the top navigation bar, select a region.
In the left-side navigation pane, click Cluster.
On the Cluster page, find the cluster that you want to manage, click the
icon in the upper-right corner, and then select Reset the cluster password. In the dialog box that appears, proceed as prompted.
Click OK.
Log on to the cluster again with the new password to ensure that the password change is successful.
For more information, see Connect to a cluster.
References
You can also call an API operation to modify the configurations of a cluster. For more information, see UpdateCluster.