How to Create LVM in Linux CentOS 7 / RHEL 7 / Oracle Linux 7

Storage technology plays a important role in improving the availability, performance, and ability to manage Linux servers. One of the most useful and helpful technology to linux system administrator is Linux Logical Volume Manager(LVM), version 2 (or LVM 2). LVM is a widely-used technique and extremely flexible disk management scheme for deploying logical rather than […]

Rescan SCSI Bus to Add or Remove a SCSI Devices on Linux

When you need to add a hard disk or network interface cards on the new VMware virtual machine on the production server, but you are not allowed to shutdown the server or you have several related issues as below. The following quick article shows how to rescan SCSI Bus to add or remove a SCSI […]

How to Add a New Hard Disk Without Rebooting on CentOS 7/ RHEL 7

Normally when you have added new storage to a running Virtual machine, you probably won’t see the new storage automatically. This is because the SCSI bus to which the storage devices are connected needs to be rescanned to make the new hardware visible. As a system administrator, to maintain the linux server uptime is very […]

4 lvcreate Command Examples on Linux

Logical volume management (LVM) is a widely-used technique and extremely flexible disk management scheme. It basically contain three basic command : a. Creates the physical volumes using pvcreate b. Create the volume group and add partition into volume group using vgcreate c. Create a new logical volume using lvcreate The following examples focus on the […]

Will 2015 be the year of the Microsoft/Linux love fest?

Microsoft has finally embraced Linux — with a bit of passion. Jack Wallen reports why he believes the makers of Windows have finally come around to sidling up to the open-source platform. There is one sentence that I swore I’d never write. Microsoft loves Linux. That’s right. During a webcast, new CEO Satya Nadella stood […]

How to Install Webmin 1.720 on CentOS 6/RHEL 6

Webmin is a web-based free software that is created for the administration of the system for linux and unix . It is managed through the graphical web interface that is very user friendly and suitable for beginners who are less familiar with linux command line utility. However, a recent version can also be installed and […]

How to Import and Export MySQL Database Command line in Linux

In this article, I will show you how to import and export MySQL database command line in Linux. In this case, export is to backup while import is to restore. The syntax are very simple and easy to understand and suitable for all levels of users including beginners. This MySQL command line is useful for […]

How to Add Linux Swap Space on CentOS 6 VPS

I have a virtual private server (VPS) and plans to run a WordPress blog in it. A limited amount of RAM and swap size will be an issue because some software applications like MySQL, Apache, NGINX, PHP, HHVM and Varnish requires more memory to operate. From my past experience in Ubiquity Hosting and Linode, the […]

How to Remove/Uninstall Nginx Installed from Source on CentOS 6/RHEL 6

On this day, Nginx web server is reported to be a most popular and fastest in the internet if installed properly. But it should always be updated from time to time in order to maintain stability and high security so that is not exposed to hackers. For system administrators and web masters, it is routine […]

How to Prepare for Zimbra 8 Installation Prerequisites on RHEL 7/CentOS 7

Before we install Zimbra 8, I would recommend you to meet all of these requirements. Some software prerequisites should be installed first, then setup the DNS and MX records, provides internet access to and from the Zimbra server, install the latest patches on the server zimbra 8, properly configure iptables filter or firewalld service, turn […]

How to Install Zimbra 8.6.0 on RHEL 7/CentOS 7

Zimbra 8.6.0 brings new features, improvements in Mail server and better web clients experience. Some that caught my attention was local lmtp client can communicate over ssl for mail server, better organization of shared folders for web client and the calendar now can run search on description for location or resources. You can get detailed […]

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