Samba is a service in Linux that provides seamless file and print service to SMB/CIFS clients. One of the main feature of samba is that it allows interoperability between Linux/Unix servers and Window-based clients. In general, you can share resource-like files [...]
Difference between FC SAN, ISCSI SAN, DAS and NAS
SAN Advantages 1) Share storage among different application servers. 2) Data is stored at a block level. 3) Physical elements of the SAN (servers, switches, storage arrays, etc.) are connected with Fibre Channel. 4) SAN is both scalability and flexibility. [...]
Create, Format, Mount Filesystems in Linux
A filesystem is an organization of data and metadata on storage device. You can also say it as organizing data in systematic manner. Linux filesystem interface is implemented as a layer architecture. Today unix-like operating system contains only files. If [...]
Shared Memory Settings In Linux With Examples
Shared memory is the memory that may be accessed by multiple processes; i.e. a memory region that can be shared between different processes and a better way of passing data between two processes. Shared memory is the fastest form of [...]
In Linux How to Flush Routing Table from Cache
A routing table in computer networking is a data table that's stored on a router or network server which lists the routes to particular network destinations. Usually, each static route has a metric associated with it. This metric is used [...]
How To Create, Extend, Remove Swap Partition in Redhat/Centos LVM
Swap memory is required when the system requires more memory than it is physically available. The kernel swaps out less used pages and gives memory to the current process that needs the memory immediately. So a page of memory is [...]
Show Storage Luns Allocated on Linux
When you are working in a storage environment, it is often desirable to add, remove or re-size storage devices while the operating system is running and without rebooting. But instead of doing theses operations, you can most need to identify/show [...]
Linux XDMCP Service - How to access remote Linux GUI
Most linux admins work from shell and there is not much requirement to connect to the X window. But, in some cases, we need to access graphic console (X window Manager). For example, if a user needs to install oracle [...]
How To Backup LVM Configuration On Linux (vgcfgbackup & vgcfgrestore)
Due to several reason a volume group may become corrupted after unintended user intervention. LVM will not be aware of this situation unless the alternate is already on the volume group, and may allow to add the alternate path to [...]
4 Steps Passwordless SSH Login and Updating Keys
Hi all, today we'll gonna learn how we can setup Passwordless SSH Logon to Linux systems. Only the workstations having the correct matching key pair (private and public) will be allowed to logon to the SSH server, without the key paring, [...]
How to Create Partition in Linux using fdisk Tool
Fdisk is command-line utility that provides disk partitioning functions for various operating systems. It was originally developed by IBM in 1983 and since then it was used on most operating systems from DOS to Windows and to Unix-based systems. Using fdisk [...]
5 Tips to Fix Linux Booting Issues
As for many systems, you can use it every day but it can happen that for some reason, your system doesn't boot and you need to know how you can do in these situations. Some Linux distributions don't offer a [...]
How To Enable, Create, Activate Ethernet Bonding in Linux
During your projects or during your experiences(experiments) regarding administration systems and network, you doubtless go one day to be confronted with the problems of load balancing and high availability of links ethernet. Ethernet bonding is a method of combining (joining) two [...]
How Scan LUN In Redhat Linux Vmware Guest OS
In this blog, I am trying to give some examples that show how to scan LUN from a Redhat Linux Vmware Guest OS (This example is from RHEL3). Once LUNs are mapped for VM's, it should be made visible to [...]