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Thursday, 30 April 2015

Observation Log option in DCUI?

To prevent a potential security breach, verify that the login attempt was made by an authorized user.  You can check /var/log/syslog.log and /var/log/hostd.log for both successful and failed login attempts.  The /var/log/vobd.log file also contains logs for failed login attempts. This /var/log/vobd.log  is knows as observation log in ESXi.
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Wednesday, 29 April 2015

Do i need UPLINK for the communication between two different VMs connected on the Same vSwitch but different portgroups?

I am always getting this question in my sessions:-
"Do i need UPLINK for the communication between two different VMs connected on the Same vSwitch but different portgroups but no VLAN is configured at the portgroup level either both the VMs Portgroup VLAN is same ?"
then i thought i should write a blog post for this with some proof of concept with screenshots. So here are the details of this test environment:-

Test Environment:-
ESXi Host = esxi01.vclass.local
VM's = Win01a, Win02a
IP Addresses:-
Win01a =
Win02a =
vSwitch = vSwitch5
Sales = Win01a
Marketing = Win02a

So It's Proved now no uplink is needed when two vm's from two different porgroups wants to communicate with each other if they are the part of same vlan. Uplink is needed only when when both the portgroups are the part of different vlan's.

Tuesday, 28 April 2015

NET-LBT Command

net-lbt is a debugging utility for the new Load-Based Teaming feature.

[root@esx4-1 ~]# /usr/lib/vmware/bin/net-lbt -h

Usage: [-d] [-t time] [-v] [-s threshold]
-d run in daemon mode
-t daemon sleep period in seconds, minimum 10 seconds
-v run with verbose logging
-s saturate threshold [10, 100], i.e. 60 for 60% of line rate

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For More Info
This offer will run until June 19th, 2015

Thursday, 23 April 2015

Windows Based vCenter to vCenter Appliance Converter - VMware Flings

The VCS to VCSA Converter Appliance is the 2013 Fling Contest winning idea. It allows customers to migrate from Windows vCenter Server with an External Microsoft SQL Server Database to the vCenter Server Appliance with an embedded vPostgres database. The Fling migrates the vCenter database, roles, permissions, privileges, certificates and inventory service. The target appliance will run at the same IP address as the source vCenter.

Video Tutorial


Download step-by-step document from here

VMware Flings