Xymon is an easy and nice and systems and network monitor tool. It was inspired by the Big Brother system and was called Hobbit. I have set it up in my environment (CentOS 6.5) to monitor some critical web sites and services. Here are my how-to notes: 1) Install Xymon from source code. 2) Change … Continue reading Setup Xymon monitor
Nametype in TSM ‘Delete File’ command
Sometimes when deleting a node's file spaces in the TSM, you may see the error ANS8001I Return code 11. This means the specified file spaces can not be found for the node, even you are 100% sure there is no any typos.This is caused the name type of file spaces. You have to choose the right name … Continue reading Nametype in TSM ‘Delete File’ command
High disk latency in Microsoft cluster on ESXi
We have a new Windows 2012 R2 file server cluster running on ESXi 5.0 update 2. My colleague told me that the disk performance is terrible when he tried to use robocopy to migrate some big data to the new clusters. In the resource monitor, the worst disk response time is up to 36,000 ms!! … Continue reading High disk latency in Microsoft cluster on ESXi
ESXi datastore with corrupted partition table
My colleague told me that he always failed to vmotion virtual machines to a particular datastore. The error message does not have much information, it just says the virtual machine files on the destination datastore is not accessible even the vmotion has not started yet.I found some relevant information in the vmkernel log: 2014-03-26T04:36:20.189Z cpu28:6188)NMP: nmp_ThrottleLogForDevice:2318: … Continue reading ESXi datastore with corrupted partition table
PowerShell: XenApp Server Performance
I wrote a simple PowerShell script to monitor the real time performance (CPU usage, Memory usage and Disk queue length) of the XenApp farm servers. To make it work, you need to: 1) Download and install the XenApp Powershell SDK. 2) Ensure the 'Citrix XenApp Commands Remoting' service is running on the data collector server. … Continue reading PowerShell: XenApp Server Performance
