May 12, 2015

Add multiple interface and IP address – ubuntu and centos

Linux General,

Save IPs in a file like /opt/dummy.txt and run the script to add them up. Interface add script–Ubuntu or Centos: echo Enter Distribution ubuntu\/centos

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April 30, 2015

MEGACLI Commands to check Hardware RAID config and Setup

Linux General,

01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2108 [Liberator] (rev 05) The above command shows the RAID controller vendor details.

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April 28, 2015

Migrating emails from one server to another without Server access

Mail Servers,

There are many tools available for this mail to mail migration, here we are going to use "Imapcopy", which I believe to be the best and easy command line tool. It does support both Imap and Imaps protocols. Since this tool only uses 'imap' protocol to copy emails, not much of server resources will be…

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March 11, 2015

Device eth0 does not seem to be present

VMware,

After restoring a VM from datastore or after cloning a centos VM on Vsphere, we see the following error during network restart "Device eth0 does not seem to be present"

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March 10, 2015

Vmware – Unable to operate a ESX host with locked disk

VMware,

Background No operation can be performed on an ESX host and you may see files are locked by other processes.

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February 10, 2015

Integrating Parallels Virtuozzo container in Citrix Xen server

Linux General,

We are trying to install virtuozzo 4.7 in a virtual Machine that has got centos running on it. Virtuozzo installation in this VM goes fine and the VM prompts for reboot post installation. During boot operation, the VM console freezes with lot of errors whereas you can still login to the Virtual machine using putty…

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February 10, 2015

Change VLAN ID using VMware Infra Client or Vsphere client

VMware,

This guide will help you to change the VLAN ID using the VMware Infra Client or Vsphere client. Below are the information that relates to adding and removing VLAN IDs to and from a portgroup, when the following symptoms are observed.

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February 10, 2015

Fixing a corrupt VHD file

Virtualization,

There could be many possible causes why your VHD may become corrupted. More often administrators tend to restore the backup from the snapshot catalog. This is to ensure an uptime guarantee. However, if we have enough time or in the event of not having a snapshot backup our options are very limited. Below are a…

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