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Tag: CentOS

Resetting CentOS 5 Root Password

Rumi, October 7, 2013

If you have forgotten the root password it is possible to set a new one as follows: Interrupt the boot at the GRUB stage and boot to runlevel 1, AKA single user mode. Interrupt GRUB by typing a character such as "space" then append to the kernel line by typing…

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PXE Boot Server of CentOS 5 on a CentOS setup

Rumi, May 31, 2013

Setting up PXE Server Install some packages that is required for PXE server. [root@dlp ~]# yum -y install system-config-netboot syslinux xinetd tftp-server Run TFTP server [root@dlp ~]# vi /etc/xinetd.d/tftp # line 14: change disable =no [root@dlp ~]# /etc/rc.d/init.d/xinetd start Starting xinetd: [ OK ] [root@dlp ~]# chkconfig xinetd on Install…

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CentOS Software Raid-1

Rumi, May 26, 2013May 26, 2013

Below are the steps on how to do the software RAID continuing from the hard disk partitioning section:   -1) Upon entering the partitioning review, it should looks like this:     2) Next is to delete every partition and left with only free space for both hard disk. It…

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CentOS: Configure Piranha as Load Balancer (Direct Routing Method)

Rumi, April 19, 2013

I am currently working on a web cluster project using CentOS. In this project, I have 2 web servers running on Apache and mounted the same document root to serve the HTTP content. I also have 2 servers in front of it to become the load balancer and failover to…

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Centos Install and Configure MRTG

Rumi, April 6, 2013

The Multi Router Traffic Grapher (MRTG) is a tool to monitor the traffic load on network-links. MRTG generates HTML pages containing PNG images which provide a LIVE visual representation of this traffic. You need the following packages: mrtg : Multi Router Traffic Grapher net-snmp and net-snmp-utils : SNMP (Simple Network…

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Install Munin on CentOS 5

Rumi, January 20, 2013

1 Preliminary Note Our system's hostname is server1.example.com, and we have a web site www.example.com on it with the document root /var/www/www.example.com/web. 2 Enable The RPMforge Repository On CentOS 5.2, munin and monit are not available in the default CentOS repositories. Fortunately we can install them from the RPMforge repository….

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Centos 5 Product Specification

Rumi, December 27, 2012December 27, 2012

his page contains an overview on the capabilities and limits of CentOS. End of Lifetime (EOL) Dates CentOS41 CentOS5 CentOS6 Full Updates2 February 29th, 2009 Q1 2014 Q2 2017 Maintenance Updates3 February 29th, 2012 March 31st, 2017 November 30th, 2020 Architecture CentOS4 CentOS5 CentOS6 Latest Release 4.9 5.8 6.3 Supports…

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Install Varnish on CentOS/RedHat/SL 5 or 6

Rumi, December 5, 2012December 5, 2012

Varnish Cache is a web application accelerator also known as a caching HTTP reverse proxy. It is installed in front of the web application and it speeds up the web application significantly. Since varnish is not available in CentOS repo, you have to add the EPEL repo. However Varnish suggests…

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Configuring A High Availability Cluster (Heartbeat) On CentOS

Rumi, December 4, 2012

This guide shows how you can set up a two node, high-availability HTTP cluster with heartbeat on CentOS. Both nodes use the Apache web server to serve the same content. Pre-Configuration Requirements Assign hostname node01 to primary node with IP address 172.16.4.80 to eth0. Assign hostname node02 to slave node…

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Reset root Password for Redhat/CentOS/Sl Linux 5.x

Rumi, November 1, 2012November 1, 2012

You can log in using single-user mode and create a new root password. To enter single-user mode, reboot your computer. If you use the default boot loader, GRUB, you can enter single user mode by performing the following: At the boot loader menu, use the arrow keys to highlight the…

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Myself…

Hi, I am Hasan T. Emdad Rumi, an IT Project Manager & Consultant, Virtualization & Cloud Savvyfrom Dhaka, Bangladesh. I have prior experience in managing numerous local and international projects in the area of Telco VAS & NMC, National Data Center & PKI Naitonal Root and CA Infrastructure. Also engaged with several Offshore Software Development Team.

Worked with Orascom Telecom-Banglalink, Network Elites as VAS partner, BTRC, BTT (Turkey) , Mango Teleservices Limited and Access to Informaiton (A2I-UNDP)

Currently working at Oracle Corporation as Principal Technology Solution and Cloud Architect.

You can reach me [h.t.emdad at gmail.com] and I will be delighted to exchange my views.

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Apache Bind Cacti CentOS CentOS 6 CentOS 7 Debain Debian Debian 10 Debian 11 Debian 12 DKIM Docker endian icinga iptables Jitsi LAMP Letsencrypt Linux Munin MySQL Nagios Nextcloud NFS nginx pfsense php Postfix powerdns Proxmox RDP squid SSH SSL Ubuntu Ubuntu 16 Ubuntu 18 Ubuntu 20 Varnish virtualbox vpn Webmin XCP-NG zimbra

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