Chapter 9. Monitoring Red Hat Enterprise Virtualization

A system administrator monitors the management environment to view the virtualization infrastructure's overall performance. This helps identify key areas in the virtualization environment that require attention or optimization. A system administrator gains up-to-date information on the performance and status of virtual environment components with the Events and Monitor tabs.
The Monitor tab displays instant information and statistics about the entire system. It generates usage graphs for storage, memory, CPU, and network traffic of hosts and virtual machines. It also lists high severity warnings.
The Events tab lists all warnings, errors, and other events that occur in the system.

Note — Reporting Tools

Red Hat Enterprise Virtualization also provides administrators with reporting tools that generate textual and graphical reports with greater detail than the standard monitoring tools. This book covers these reporting tools in Chapter 10, Red Hat Enterprise Virtualization Reports and Chapter 11, History Database Reports.

9.1. Using the Monitoring Tools

The Monitor tab provides an overall picture of the Red Hat Enterprise Virtualization platform environment to the system administrator. It lists general information, such as the number of hosts and virtual machines currently running, plus displays memory usage, CPU usage, network usage and high severity events over the last 24 hours.
Monitor Tab

Figure 9.1. Monitor Tab

The System Monitor comprises of the following information:
  • Storage - Graphs of the used space on each storage domain;
  • Hosts - Graphs of CPU, memory and network traffic usage for each host;
  • Virtual Machines - Graphs of CPU, memory and network traffic usage for each virtual machine; and
  • High Severity Events - Viewable in the lower panel.
Drag the edges of each panel in the System Monitor to resize the panel.

9.1.1. Monitoring Storage

The Storage pane on the Monitor tab displays the storage domains usage graphs. Each domain uses a different color. Move the cursor over the graph of a storage domain to view the Available, Used, and Total capacity of the storage domain.
Monitor Storage

Figure 9.2. Monitor Storage

9.1.2. Monitoring Hosts

The Hosts pane displays the Memory, CPU, and Network usage graphs of the hosts. Move the cursor over the graphs of a host to view the CPU, Memory and Network usage of the hosts.
Monitor Storage

Figure 9.3. Monitor Storage

9.1.3. Monitoring Virtual Machines

The Virtual Machine pane displays the Memory, CPU, and Network usage graphs of virtual machines. Move the cursor over the graphs of a virtual machine to view the CPU, Memory and Network usage of the virtual machines.
Monitor Virtual Machines

Figure 9.4. Monitor Virtual Machines

Moving the cursor over the virtual machine graphs also displays name of the virtual machine.
Monitor Virtual Machines

Figure 9.5. Monitor Virtual Machines

9.1.4. Monitoring High Severity Events

High Severity Events display in the lower panel of the Monitor tab.
High Severity Events

Figure 9.6. High Severity Events

9.1.5. Viewing the Event List

The Event list displays all system events. The types of events that appear in the Events tab are audits, warnings, and errors. The names of the user, host, virtual machine, and/or template involved in the event are also listed. This information helps determine the cause of the event. Click the column headers to sort the event list.
Event List

Figure 9.7. Event List

The following table describes the different columns of the Event list:
Column Description
The type of event. The possible event types are:
Audit notification (e.g. log on).
Warning notification.
Error notification.
Time The time that the event occurred.
Message The message describing that an event occurred.
User The user that received the event.
Host The host on which the event occurred.
Virtual Machine The virtual machine on which the event occurred.
Template The template of the virtual machine where the event occurred.

9.1.6. Viewing Alert Information

The Alerts pane lists all important notifications about the virtualization environment.
Alerts display in the lowermost panel on top of the manager interface. Drag the top of the Alert pane to resize it or click the minimize/maximize icon in the top-right of the pane to hide or show it.
Alerts Tab

Figure 9.8. Alerts Tab

The Alerts pane also contains an Events list. Click the Events tab in the Alerts pane to display the Events list. See Section 9.1.5, “Viewing the Event List” for more information about the Events list.