Red Hat Enterprise Linux 7 (RHEL 7) and CentOS 7 come with the new naming scheme for the network devices. These features change the name of network interfaces on a system in order to make the network interfaces fully predictable, fully automatic, easier to differentiate and that broken hardware can be replaced seamlessly. This affects […]
Nmon (Nigel’s Monitor) is a great performance monitoring tool for Linux operating system. It was written initially for AIX to monitor system performance. nmon for Linux can be used to collect informations on CPU, memory, network, disk I/O, top processes etc. System administrator can use nmon as a tuner or benchmark tool that will provide […]
There are 7 useful linux utilities that you must install on new linux server. Most Linux distributions are equipped with tons of linux command utility, but if you have installed minimal operating system, all these software will not exist. These tools will very useful in your troubleshooting and will help to find possible causes of […]
Red Hat Enterprise Linux 6 (RHEL 6) is a Linux-based operating system developed by Red Hat that offers greatly enhanced scalability and well equipped operating system to handle future technological advances. In this post, i will shows the steps to install Red Hat Enterprise Linux 6.2 (RHEL 6.2). 1. Download a copy of the Red […]
MailWatch for MailScanner is a open source or free web-based front-end to Mailscanner that use to displays the inbound/outbound mail queue, spam, viruses and blocked content on each page header. MailWatch has been written in PHP, MySQL and JpGraph. By using Mailwatch, it allows you to delete, release or run sa-learn across any messages that […]
Basically, adding and removing LVM will always involves these three logical “layers” which are Physical volumes (pv), Volume groups (vg) and Logical volumes (lv). This post assumed that the Logical volumes haven’t created. In certain situation, linux administrators are required to remove the existing Physical Volume or Volume Group only. It is possible to perform […]
Before you start installing Zimbra Collaboration Suite (ZCS) 8.0.1 or 8.0.2, there are a few prerequisites checking have to be performed. This is to ensure that the installation running smoothly without any interruption while saving your time to troubleshoot. I have installed Zimbra Collaboration Suite 8.0.1 and 8.0.2 on many CentOS 6.3 and i would […]
This post describes on how to setup and configure hosted Openfiler iSCSI storage target on a VMware ESX/ESXi or VMware server 1.x or 2.x host using the freely available Openfiler appliance. However this configuration and setting not a suitable solution for a production environment as it does not include any iSCSI CHAP authentication or datastore […]
This quick post shows the step to install “man” command on Linux. In linux CentOS 6.2 and CentOS 6.3 operating system, “man” command has not been installed automatically. The Linux command “man” is used to display the manual page for other command and also will help you to explain the functions for the commands that […]
This post show you the quick guide on how you can get the uname information for your linux server shell command. Sometimes it is required to quickly get and print kernel information. 1. Print help to view the basic syntax of the uname command : [root@centos63 ~]# uname –help Usage: uname [OPTION]… Print certain system […]
The priorities plugin can be used to enforce ordered protection of repositories, by associating priorities to repositories. Theoretically, the repositories with the lowest numerical priority number have the highest priority. This is one of the method to prevents mistakes such as accidentally running yum upgrade with everything. This post cover the quick step to install […]
Webmin is a web-based interface for system administration for Linux. By using webmin at the browser, you can setup user accounts, Apache, DNS, file sharing and much more. This post covers the steps to setup Webmin 1.590-1 on CentOS 6.3 using RPM. 1. Download Webmin : [root@centos63 ~]# wget http://prdownloads.sourceforge.net/webadmin/webmin-1.590-1.noarch.rpm Examples : [root@centos63 ~]# wget […]
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