Logical Volume Manager Logical Volume Manager (LVM) Logical Volume Manager :- LVM is a method of allocating hard drive space into logical volumes that can be easily resized. With LVM, the HD or set of hard drives is allocated to one or more Physical Volumes. The Physical Volumes are then combined into Volume Groups. Each Volume Group is divided into Logical Volumes, which are formatted with a file system like ext3 and are then mounted. Steps : 1. Create Partition and change File System ID : # fdisk -l # fdisk /dev/sda 2. Check and Create physical Volume : # pvdisplay # pvcreate /dev/sda9 /dev/sda10 # pvcreate /dev/sda11 # pvdisplay | less 3. Check and Create Volume Group : # vgdisplay # vgcreate hydvolgrp /dev/sda9 /dev/sda10 #vgdisplay -v | less 4. Check and Create logical Volme : # lvdisplay # lvcreate -L 2G hydvolgrp -n rohitlv # lvcreate -L 500M hydvolgrp -n patellv # lvdisplay | less 5. Format...
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SSL Sites On Shared IP via SNI Days are gone when we needed a dedicated IP for each website with SSL! With Server Name Indication(SNI) extension of the Transport Layer Security protocol, it is now possible to use authentic SSL certificates for sites hosted on shared IP addresses. If you are on a Linux hosted environment, you could very well reap the benefit of the feature right away. Key benefits 1. Reduces the cost of adding dedicated IP addresses 2. All domains can have their own SSL certificates installed How it works! We all know how SSL works. In normal SSL, when a user types “https” in a browser’s URL field, the encryption is provided by the Transport Layer Security (TLS) protocol. TLS uses a digitally signed certificate that includes the domain name of the site to ensure that the user connects to the correct site requested. Browsers like Internet Explorer, Mozilla, Opera, Google chrome generally accepts the certificate as “trusted...