After building a new vsphere site with 6.0 PSCs , you may end up having them unjoined from domain frequently after some time. Symptoms: PSC node automatically moves out of active directory domain. System configuration -- > Deployment -- > Nodes in webclient shows both "JOIN" and "LEAVE" option greyed out for the PSC node.… Continue reading vSphere PSC 6.0 goes out of AD domain frequently
Login fails to vCenter server saying "took too long to respond- Command timed out"
A very basic error that a VMware administrator would face often is the login failure to vCenter. However, we usually check the vCenter service and vCenter database associated with it. What if I say that, vCenter service is running fine. Able to login to the vCenter through Web client successfully. Restarting the vCenter server didn't… Continue reading Login fails to vCenter server saying "took too long to respond- Command timed out"
ESXi host alarm "Status of other hardware objects" – System board Sensor 0 Reports SEL_FULLNESS
ESXi hosts frequently triggers below alarm messages in vCenter: "Status of other hardware objects" In the events tab, you see below messages, Alarm 'Status of other host hardware objects':<host name> changed from <warning> to <Alert> Health of Other changed from <Normal> to <Warning>.Sensor name:System Board 0 SEL_FULLNESS. Current reading: xxxx(raw value) Health of Other changed from… Continue reading ESXi host alarm "Status of other hardware objects" – System board Sensor 0 Reports SEL_FULLNESS
ESXi6.0 Host disconnects from vCenter frequently
Symptoms: Esxi 6.0 host disconnects from vCenter very often. Running any command over SSH , localcli fails with below mentioned error. hostd.log reports below error, " Error interacting with configuration file /etc/vmware/lunTimestamps.log: Timeout while waiting for lock, /etc/vmware/lunTimestamps.log.LOCK, to be released. Another process has kept this file locked for more than 30 seconds. The process currently… Continue reading ESXi6.0 Host disconnects from vCenter frequently
The Data Service detected slow execution -VMware vSphere Webclient reports data query service time out.
Error: virgo.log reports , "com.vmware.vise.data.query.DataServiceException: The data service timed out because a back-end task took more than 120 seconds. See the vsphere-client-virgo.log for more details." vSphere_client-Virgo.log reports below error: The Data Service detected slow execution:A DataProviderAdapter execution took too long: xxxx milliseconds. Symptoms: vSphere web client takes longer time than usual for loading after logging in.… Continue reading The Data Service detected slow execution -VMware vSphere Webclient reports data query service time out.
Virtual Machine Restart or VMM Panic "CoreDump error line 2160, error Cannot allocate memory"
Virtual machines could have been restarted by vSphere HA for several reasons. Have you ever imagined a HA restart of VM happened when - No host failure , No HA heart beat failure No VM monitoring configured at HA - Virtual machine options. Only one VM in a host (present in a HA cluster with… Continue reading Virtual Machine Restart or VMM Panic "CoreDump error line 2160, error Cannot allocate memory"
PowerPath:Path vmhba0:C0:T2:Lxx : could not issue async IO command: Timeout
Event Message : Issue detected on <> : PowerPath:Path vmhbax:Cx:Tx:Lxx : could not issue async IO command: Timeout. Most of the VMware administrators are familiar with this error in the host tasks & events. However, we ignore it since it is not causing any performance degradation or storage disconnect. The actual reason is ESXi host with… Continue reading PowerPath:Path vmhba0:C0:T2:Lxx : could not issue async IO command: Timeout
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