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Virtual Geek

Tales from real IT system administrators world and non-production environment

Stuffs from real IT system ADMINISTRATORS world and my LAB

Migrating move back from Distributed virtual switch to Standard virtual switch - VMKernal Adapter - Part 2

November 20, 2017 08:03PM

In this article I will be migrating VMKernel virtual adpaters from distributed virtual switches to standard virtual switch, in earlier article I addressed Copy or clone distributed virtual switch portgroups to standard switch portgroups - Powercli, this helps automating, creating Portgroup. Here I am migrating esxi server from one vCenter to another vCenter, If you don't migrate ESXi servers fro…

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Set Powershell execution policy with Group Policy

November 17, 2017 02:45PM

In this article I will be covering configuring Windows PowerShell execution policy using Group Policy, to configure environments properly ahead of time for better management, doing this takes less time to get your work done in timely fashion. For example, I gave few ps1 PowerShell script to some of my nontechnical end users to collect information for specific period when issue occur. But next day …

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Copy or clone distributed virtual switch portgroups to standard switch portgroups - Powercli

November 13, 2017 12:11PM

Migrating ESXi server from one vCenter server to another vCenter server is very easy task if complete networking is on standard virtual switches. When migrating ESXi server with distributed virtual switches to another VC is also easy but requires extra steps. First it is recommended to move back from DVSwitch to SSwitch before migrating esxi to another vCenter. Failing to do so will create issues …

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VMware hot-extend was invoked with size is not supported: Virtual Machine HDD VMDK

November 4, 2017 05:19PM

Last day I received some critical tasks on production to increase Virtual Machine Hard disk VMDK size, on around 200 vms. For 99.99% I have my own VMWare PowerCLI scripts repository to automate my tasks to complete it before time. While running script I was getting errors, To further troubleshoot I tried to increase the disk size using vSphere web client, --> Virtual Machine Edit Settings. Expandi…

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vSphere PowerCLI - Configure syslog on VMware ESXi hosts and Enable security profile firewall

November 1, 2017 01:55PM

In my earlier article I wrote about Configure syslog on VMware ESXi hosts: VMware best practices using VMWare vSphere web client GUI. Configuring syslog server on multiple esxi host servers manually by clicks is very boring task, As automation is everywhere, use it to doing with better way in VMWare Powercli. for more on Powercli check my below articles

VMWARE VSPHERE POWERCLI INSTALLATIO…

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Configure syslog on VMware ESXi hosts: VMware best practices

October 30, 2017 01:59PM

Syslog is a way for VMWare vSphere esxi servers or other network devices to send event messages to a logging server – usually known as a Syslog server (Inbuilt vSphere tool called as VMWare syslog collector). The Syslog protocol is supported by a wide range of devices and can be used to log different types of events. Logs are collected and stored centrally, so it can easily backed up, viewed, retr…

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Reset/Restart HP ILO (Integrated Lights-outs) using putty

October 28, 2017 08:41PM

This blog article is my another part of Resolved: HP ILO this page cannot be displayed ERR_SSL_BAD_RECORD_MAC_ALERT, I found few more servers which were pinging, able to telnet ILO ip port 80 and 443 (ssl), But still webpage was either can't be displayed or site can't be reached, tried following above article but no luck, This behavior is due to HP ILO (web service) is hung, to resolve it you hav…

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Resolved: HP ILO this page cannot be displayed ERR_SSL_BAD_RECORD_MAC_ALERT

October 28, 2017 02:12PM

Recently I was involved with configuring few old generation 7 HP servers. I wanted to install ESXi server on the same as well upgrading firmware, This was required ILO to be working. when checked using Internet explorer I got issue this page can't be displayed (before loading it was showing certificate error on the page). This issue was for across all the HP ilo servers. Even tried using google ch…

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Add multiple proxy addresses with Microsoft PowerShell in Active Directory Groups

October 26, 2017 03:45PM

This article is second part of POWERSHELL ACTIVE DIRECTORY: ADD OR UPDATE PROXYADDRESSES IN USER PROPERTIES ATTRIBUTE EDITOR, In this part, I will be changing proxy addresses on active directory groups using PowerShell script. This is helpful while migration of bulk users and groups to Microsoft Office 365.Active Directory domain controller Powershell, get-Adgroup, proxyaddress, get-aduser, set-adgroup, set-aduser email, mail, groupcatogary change information

To use it copy below script in Add-ADGroupProxyAddress.ps1 file and the group informat…

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Find next available free drive letter using PowerShell

October 25, 2017 11:09AM

Below is my one-liner small PowerShell code for finding next available free unassigned first drive letter, I use it frequently for automating mapping shared drives. This is based on Get-PSDrive -PSProvider FileSystem, it shows the all in use drive, Generally A, B (floppy drive not for use as disk or mapped drive) and C are always in use on Microsoft OS as root drive, I am skipping those drive whil…

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