Collecting capacity data from virtualization hosts with disconnect scanner (disconnected scenario)

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9.2.24 Available form 9.2.24.

Some versions of Xen and KVM do not allow for collecting capacity data from VMs by the VM Manager Tool. Instead, you enable the capacity scan on the virtualization host on which the VMs are running. The scan runs as part of the regular capacity scan.

Before you begin

This method is supported on the following virtualizations:
  • Xen Hypervisor
  • Citrix Hypervisor (formerly XenServer)
  • PowerKVM
  • KVM x86
For information about supported versions of these virtualizations, see: Supported operating systems.

About this task

Ensure that virtualization hosts from which you want to collect capacity data meet the following prerequisites.
KVM hosts
Ensure that the following prerequisites are met on the KVM hosts:
  • The host runs on Linux x86 or Linux on Power
  • Bash shell is available
  • libvirt-client library is installed (virsh command is available)
  • libxml2 library is installed (xmllint command is available)
Xen hosts
Ensure that the following prerequisites are met on the Xen hosts:
  • The host runs on Linux x86
  • Bash shell is available
  • xl command is available
  • libxml2 library is installed (xmllint command is available)

Procedure

  1. On the virtualization host, open the setup_config.ini file that is located in the installation directory of the disconnected scanner.
  2. Because the scan of virtualization hosts runs as part of the regular capacity scan, ensure that the HW_SCAN_SCHEDULE_ENABLED parameter is set to TRUE.
  3. To enable the capacity scan on VMs that are managed by the virtualization host, change the value of the VIRTUALIZATION_HOST_SCAN_ENABLED parameter to TRUE.
  4. Optional: To collect information about host names of the virtualization hosts, change the value of the COLLECT_HOST_HOSTNAME parameter to TRUE.
  5. For changes to take effect, run the automation/configure.sh script.