Home » Archive

Articles tagged with: troubleshooting vmware

4 Apr 2013 | John Hales | No Comments | 2,660 views | Categories: VMware
Where Do I Get vCenter Operations Manager (vCOPS)?

For years, vSphere has had alarms to let you know when things are above or below thresholds you specify. This is a great first step in identifying items that may require your attention and/or further investigation. The problem is that these thresholds are static; you set a value and are notified if it is above that value, such as CPU utilization > 75%. While useful, it can lead to many false alarms if you have a virtual machine (VM) that routinely exceeds that value or one that spikes to that value for a while during a batch-processing interval.

Enter vCenter Operations Manager (vCOPS). Let the computer do what it does best: monitoring and alerting, figuring out what is “normal,” and then notifying administrators when things are abnormal.

28 Mar 2013 | John Hales | No Comments | 4,218 views | Categories: VMware
vCenter Operations Manager (vCOPS) Basics

For years, vSphere has had alarms to let you know when things are above or below thresholds you specify. This is a great first step in identifying items that may require your attention and/or further investigation. The problem is that these thresholds are static; you set a value and are notified if it is above that value, such as CPU utilization > 75%. While useful, it can lead to many false alarms if you have a virtual machine (VM) that routinely exceeds that value or one that spikes to that value for a while during a batch-processing interval.

Enter vCenter Operations Manager (vCOPS). Let the computer do what it does best: monitoring and alerting, figuring out what is “normal,” and then notifying administrators when things are abnormal.

30 Sep 2011 | Guest Authors | No Comments | 1,273 views | Categories: Cloud Computing, Technology, Virtualization, VMware
How to Troubleshoot VMware vSphere

Cannot Migrate a Virtual Machine Using VMotion

Check the ESX(i) hosts to make sure all of the requirements are met. Then check to make sure that the CPU is compatible. CPU compatibility is important in VMware, and, if this is a problem, you might have to enable EVC to allow the feature set of both host CPUs to match. This can solve minor incompatibility issues.

22 Sep 2011 | Guest Authors | No Comments | 1,784 views | Categories: Cloud Computing, Technology, Virtualization, VMware
More VMware vSphere Troubleshooting Tips

If You Suspect a Network Performance Issue, Check Some of the Following Metrics

If the droppedRx (receive) is greater than 0 for a host, look at the CPU utilization. The CPU plays an important part in moving the packets from the guest operating system on the virtual machine to physical device driver. Check metrics such aslike CPU overhead and high CPU utilization, which can cause the virtual machine to be too busy to take on new packets or cause delays in receiving the packets. A possible solution is to increase CPU reservations for the virtual machine or check the application to see if it supports adding more vCPUs.

13 Sep 2011 | Guest Authors | No Comments | 1,636 views | Categories: Cloud Computing, Technology, Virtualization, VMware
8 Tips for Troubleshooting VMware vSphere

This 3-part series talks about 8 tips for working with vSphere. Some of the topics are logging in via Command Line TSM, dealing with connection problems using SSH to an ESXi host, and important log files and their locations. In addition, some of the tips look at dealing with performance-related issues, such as networking.