I was desperate in learning ansible and thus tried to learn some concepts over the internet. When i learned ansible to configure linux hosts through SSH , i was bit demented in understanding. So i decided to learn them with the way i understand with the technology i already know. I chose VMware. The task… Continue reading Adding ESXi Host 7.0 to vSphere cluster using Ansible
Category: ESXi Host
ESXi Host cannot boot after upgrading to 6.7 U3- Page allocation error:Out of resources
Symptoms: ESXi host will not boot after upgrading to 6.7 U3 Below reported Error is displayed on the boot screen. Shutting down firmware services... Page allocation error: Out of resources Failed to shutdown the boot services. Unrecoverable error Restarting the host will not have any impact. Cause: This issue is primarily noticed in many… Continue reading ESXi Host cannot boot after upgrading to 6.7 U3- Page allocation error:Out of resources
PowerCLI Script to Get VLAN information of all ESXi hosts in vCenter
VLAN tagged to ESXi hosts seems to be the required information for all VMware administrators when there is an issue with vMotion or to validate the current setup of the virtual environment. if there are several hosts in the environment , it is tedious to get Observed IP ranges listed in every Network adapter on… Continue reading PowerCLI Script to Get VLAN information of all ESXi hosts in vCenter
vMotion fails with error ” Unable to prepare migration. Network address is not valid for translation”
Symptoms: Migrating virtual machine fails with error in VPXD log as below, Error: faultMessage = (vmodl.LocalizableMessage) [(vmodl.LocalizableMessage) { key = "msg.migrate.prepare.failed", arg = <unset>, message = "Unable to prepare migration." }, (vmodl.LocalizableMessage) { key = "msg.migrate.addr.convert", arg = (vmodl.KeyAnyValue) [ (vmodl.KeyAnyValue) { key = "1", value = "esxi02.myad.local" } ], message = "Network address 'esxi02.myad.local'… Continue reading vMotion fails with error ” Unable to prepare migration. Network address is not valid for translation”
ESXi 6.0 storage configuration Shows 0 devices and all active paths
Symptoms: ESXi 6.0 can read/write to the data store actively and no impact to the performance. ESXi host configuration -- > storage shows all data stores as Normal and active. But devices will be 0 and paths will be fine. Running command "esxcli storage core device list" or any other esxcli command returns the message… Continue reading ESXi 6.0 storage configuration Shows 0 devices and all active paths
ESXi 6.0 U2 running on UCS B200 M4 goes unresponsive while all storage paths are dead.
Symptoms: ESXi 6.0 U2 with VIC 1340 is not responding in the vCenter. KVM console of the ESXi host becomes unresponsive. Cannot take vSphere client , but host is pingable. Cannot putty into the ESXi host through SSH. All storage paths are dead and all devices shows inactive. Other hosts in the cluster remains fine. In… Continue reading ESXi 6.0 U2 running on UCS B200 M4 goes unresponsive while all storage paths are dead.
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
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
virtuSolve 