Книга: Mastering VMware® Infrastructure3

Chapter 11: Monitoring Virtual Infrastructure Performance

Chapter 11: Monitoring Virtual Infrastructure Performance

Create an alarm. Creating host and virtual machine alarms is a proactive way to be alerted to abnormal behavior for all four resource groups or state changes. Alarms can be applied to a single host or virtual machine or a group of either object in the VirtualCenter hierarchy.

Master it Creating host and virtual machine alarms.

Solution There are many variations to alarms. Be sure to monitor only what is necessary to respond to problems or to alert service-level issues.

Work with graphs Creating and working with Performance graphs is the best way to monitor what is currently happening in your virtual infrastructure. Maybe more importantly, though, is a graph's ability to analyze trends in the performance of your hosts and virtual machines. Graphs can be saved and archived or printed for justifying purchase decisions or showing Before and After comparisons after adjustments have been made to either hosts or virtual machines.

Master It Creating graphs for hosts and virtual machines.

Solution Know your graph options, chart types, objects, and counters to get the most out of them. Practice their use every day to become familiar with their subtleties.

Master It Using esxtop to monitor resources on a single ESX host.

Solution Use the four letters C, M, N, and D on your keyboard to change your resource views.

Master It Use the graphs to monitor CPU usage regularly for hosts and the virtual machines.

Solution Use Change Chart Options to customize your graphs to zero in on problems. Allow the graphs to be your guide when making decisions about capacity or service-level agreements. When monitoring virtual machines, be sure to use the counter CPU Ready to provide some insight on a virtual machine's ability to be scheduled.

Master It Create graphs showing host memory usage using the various objects, counters, and chart types.

Solution Use Change Chart Options to customize your graphs to look specifically for host memory bottlenecks such as ballooning and swap usage.

Master It Create graphs showing virtual machine memory usage using the various objects, counters, and chart types.

Solution Use Change Chart Options to customize your graphs to look for virtual machine problems such as configuring a virtual machine with too little or too much memory.

Master It Create graphs showing host and virtual machine network usage using the various objects, counters, and chart types.

Solution Monitoring for overall virtual machine network activity can be achieved by using those vmnic objects that correspond with the appropriate vSwitch the virtual machines are connected to. Use the graphs to make decisions about traffic shaping and nic-teaming.

Master It Create graphs showing host and virtual machine usage using the various objects, counters, and chart types.

Solution The Disk Usage counter for both host and virtual machine graphs will be the most often used. Use the longer intervals to spot trends in disk I/O behaviors.

Save a graph. Saving graphics provides evidence of the occurrence of an event and justification for adding more hardware to the virtual infrastructure.

Master It You need to provide a graph to upper management in support of your proposal for 2 new servers to be configured as ESX Server hosts.

Solution Use the Performance tab for hosts and virtual machines to save charts any hardware device that is identified as a bottleneck that causes problems or will lead to a contention issue.

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