vNIC gets disappear from the virtual machine without any user intervention

[rahulsharma0304]

Hello to All!

We have problem with few of our 2008 R2 VM running on ESXi 6.0 host. vNIC is getting disappears from the virtual machine automatically without any intervention and there is no event indicating the removal of the network card found in vCenter task and event, and in Windows Event-viewer except in the below from vmware.log file.

2017-01-31T16:26:09.188Z| vcpu-0| I120: Powering off Ethernet0

2017-01-31T16:26:09.189Z| vcpu-0| I120: Hot removal done.

we have fixed this issue on two VM's by referring vmware kb-1012225, but still dont know why this happening.

Anyone have an idea! Thanks in Advance...

[rahulsharma0304 · Accepted solution]

Hello,

As per vmware.log file of VM, the errors are:

"
2017-01-31T16:26:08.524Z| vcpu-2| A115: ConfigDB: Setting Ethernet0.pciSlotNumber = "-1"
2017-01-31T16:26:09.059Z| vcpu-0| A115: ConfigDB: Setting Ethernet0.present = "FALSE"
2017-01-31T16:26:09.086Z| vcpu-0| A115: ConfigDB: Setting scsi0:0.redo = ""
2017-01-31T16:26:09.095Z| vcpu-0| A115: ConfigDB: Setting scsi0:1.redo = ""
2017-01-31T16:26:09.180Z| vcpu-0| A115: ConfigDB: Setting scsi0:2.redo = ""
2017-01-31T16:26:09.188Z| vcpu-0| I120: Powering off Ethernet0
2017-01-31T16:26:09.189Z| vcpu-0| I120: Hot removal done.
"
"
2017-01-26T10:47:26.488Z| vcpu-7| A115: ConfigDB: Setting Ethernet0.pciSlotNumber = "-1"
2017-01-26T10:47:26.808Z| vcpu-0| A115: ConfigDB: Setting Ethernet0.present = "FALSE"
2017-01-26T10:47:26.832Z| vcpu-0| A115: ConfigDB: Setting scsi0:0.redo = ""
2017-01-26T10:47:26.840Z| vcpu-0| A115: ConfigDB: Setting scsi0:1.redo = ""
2017-01-26T10:47:26.846Z| vcpu-0| I120: Powering off Ethernet0
2017-01-26T10:47:26.847Z| vcpu-0| I120: Hot removal done.

As I understand from the above errors, this can occur due to the reason is Hot Removal from the Guest. With the new Hot Add/Remove feature, NICs show up under the “Safely Remove Hardware” list. Any user with administrative privileges can accidentally remove the NIC using this feature. This is a common reason why the NIC has gone missing.

Reference KB article 1020718.

Regards,

Rahul Sharma