Viewing and modifying cloud groups

View or modify a cloud group in Cloud Pak System Software.

1. Access the console pane. Click Cloud > Cloud Groups.
2. Select a cloud group. You can view or modify the following fields. Editable fields display either edit or remove links, or are underlined with a dash line.

   Jobs

   Specifies the jobs that are associated with this cloud group. Click View details to view the jobs.

   Description

   This optional field specifies the description of this cloud group. Click the dotted line to add or edit the description.

   State

   Specifies the state of the cloud group.

   Created on

   Specifies the time stamp with day and time that the cloud group was created.

   Updated on

   Specifies the time stamp with day and time that the cloud group was last updated.

   Hypervisor type

   Specifies the hypervisor type.

   Type

   Specifies the cloud group type. You cannot modify cloud group Type while in use. You can modify Type when you create a new cloud group and only when resources (IPs and computing resources) in the cloud group are not in use by any other form (LPARs).

   CPU Ratio

   Select a CPU ratio value to define how finely to divide physical CPUs into virtual CPUs within a cloud group and then click Save. Each cloud group can have a different ratio. By increasing this ratio, it is possible to have more virtual CPUs to distribute when you deploy patterns, making it possible to have more deployments. However, this change does not increase the amount of available computing power, but allows it to be only distributed to deployments in finer increments.

   This option is only available when Type is set to Average.

   Important: On already deployed virtual machines in a cloud group, modify the CPU Ratio value when the deployed virtual machines are in the cloud group and when the system is in maintenance mode. If the system is in non-maintenance mode, the value is read-only. If you modify the value without the maintenance mode, the following error message is displayed:

   CWZIP3008E The rack must be in maintenance mode.

   In a cloud group with no deployed virtual machines, modify the CPU Ratio value whether the system is in maintenance mode or in non-maintenance mode.

   Reserve resources for availability

   Specifies the method for maintaining high availability within the cloud group.

   • System: No resources are reserved on individual compute nodes within the cloud group for failover. A compute node designated for high availability might be moved into the cloud group following a failure to support virtual machines that might not be moved to surviving compute nodes in the cloud group.
     Important: When you enable System high availability, you must confirm that the High availability status indicator eventually changes to the Active state. If the state remains Inactive, you do not have enough spare resources. In the case of System high availability, this means that the high availability cloud group does not contain a spare compute node.
   • Cloud Group: Resources equivalent to one compute node are reserved, making those resources unavailable to run virtual machines. Effectively, for a cloud group containing N compute nodes, 1/N of each compute node's resources are reserved. Compute nodes designated for high availability are not added to the cloud group to maintain high availability in the event of a failure and all virtual machines might not be moved to other compute nodes in the cloud group.
     Note: This option is not supported for Virtual Manager cloud groups.
   • None: No resources are reserved for high availability within the cloud group. Compute nodes designated for high availability are not added to the cloud group to maintain high availability in the event of a failure.

   For information on system-level high availability for cloud groups, see the Related tasks section.

   High Availability

   The status indicator shows the high availability status for the system:

   Active

   All cloud groups on the system are highly available.

   Inactive

   Any cloud group on the system is not highly available.

   Degraded

   There is sufficient spare compute capacity to handle the loss of a single physical compute node without experiencing outages. However, there is not enough spare capacity to apply maintenance and absorb a hardware failure, without experiencing outages.  As a best practice, place two or more spare compute nodes in the high availability group to avoid outage situations.

   The status indicator shows whether the cloud group currently contains a sufficient amount of spare resources to restart all the virtual machines on any one compute node if it should fail. The system attempts to keep high availability active when a cloud group's Reserve resources for availability setting is enabled and all of a cloud group's compute nodes are running as expected. Availability might be inactive if the Reserve resources for availability setting is disabled, while one of the compute nodes is in quiesce mode or maintenance mode, or because some instances are too large to evacuate.

   Deployment type

   Indicates whether the cloud group supports multi-cloud or single-cloud deployment, based on whether its virtual machine management uses external or internal VLANs.

   Management VLAN ID

   Specifies the virtual local area network ID number that was selected when adding the cloud group.

   IP groups

   Specifies the IP groups associated with this cloud group. To add an IP group to the cloud group, click Add more in the menu and select an IP group to add. To remove an IP group, click remove in the "Action" column. Click the IP group to review the details on the IP Groups page.

   Compute nodes

   Shows the compute nodes assigned to the cloud group. Click Add more to assign a new compute node. Click the Delete icon in the "Action" column to remove an assigned compute node.

   Note: A single compute node cannot be assigned to multiple cloud groups.

   Hardware information

   Specifies the usage and allocation of CPU resources and physical memory.

   Virtualization statistics

   Specifies the utilization of virtual CPU resources and virtual memory allocated to active virtual machines in this cloud group.

   Storage usage statistics

   Specifies input and output statistics for storage.

   Virtual machines

   Expand the Virtual machines section to view the details of the virtual machines assigned to this cloud group. You can view information including name, status, virtual memory utilization and virtual CPU utilization.

   Virtual machine configurations

   Expand the Virtual machine configurations section to view the configuration details of virtual machines assigned to this cloud group. You can view information including name, virtual memory, CPU count and description. To delete a virtual machine configuration, click the Delete icon in the Action column. Click Create a new configuration to create a virtual machine configuration for this cloud group. Describe the configuration that you want to create by entering the name in the Name field, a description in the Description field, a numeric value in the CPU count field, and numeric value in the Virtual memory (MB) filed. Click OK.

   Volume configurations

   Click Create a new configuration to create a volume configuration for this cloud group. Describe the volume configuration that you want to create by entering the name in the Name field, a description in the Description field, and size in the Size (MB) field. Click OK.

   Attention: You can define the size of your volume up to the following maximum values:

   • VMFS volume: 1.8 TB
   • RAW volume: 2 TB

   Access granted to

   Select user IDs from the Add more menu for those users who require access to the cloud group. To view the users with admin access, click admin. To display all users, click all. To remove a user, click remove.