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Category: Administrations

UDP Load Balancing using PEN

Rumi, January 5, 2017

First setup PEN load balancer using this document. After that, keep digging below 🙂 And that’s it, so now if we run pen we see it now has UDP support. root@penudp:~/pen-0.18.0# pen usage: pen [-C addr:port] [-X] [-b sec] [-S N] [-c N] [-e host[:port]] [-t sec] [-x N] [-w…

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Linux Remove All Partitions or Data And Create Empty Disk

Rumi, December 13, 2016

Use the following dd command to remove data from /dev/hdX: dd if=/dev/zero of=/dev/hdX bs=512 count=1 OR for sata disk, use the following syntax: dd if=/dev/zero of=/dev/sdX bs=512 count=1 In this example, empty sata disk /dev/sdb, enter (you must be login as the root user): fdisk /dev/sdb dd if=/dev/zero of=/dev/sdb bs=512…

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The safest way to clean up /boot partition in Debian or Ubuntu

Rumi, December 7, 2016

First check your kernel version, so you won’t delete the in-use kernel image, running: uname -r Now run this command for a list of installed kernels: dpkg –list ‘linux-image*’ and delete the kernels you don’t want/need anymore by running this: sudo apt-get remove linux-image-VERSION Replace VERSION with the version of…

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LEMP on Debian 7

Rumi, December 3, 2016December 3, 2016

Installing MySQL 5 In order to install MySQL, we run apt-get install mysql-server mysql-client You will be asked to provide a password for the MySQL root user – this password is valid for the user root@localhost as well as root@server1.example.com, so we don’t have to specify a MySQL root password…

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Identify WWN in linux

Rumi, December 3, 2016

Here are some useful commands for the most popular Linux/Unix operating systems to find your HBA WWN. There are several methods to identify HBA WWN for the fiber storage units in your server network. Method 1: (The hard way) Verified on Suse Linux Enterprise Server and CentOS/Redhat The info is…

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How to update Debian 6 Squeeze

Rumi, November 6, 2016

After a Debian version has reached EOL (end of life), its repositories go to the Debian archive. Therefore we can use this archive to get packags for our distribution. The syntax for our /etc/apt/sources.list is as follows: deb http://archive.debian.org/debian/ <version> main non-free contrib deb-src http://archive.debian.org/debian/ <version> main non-free contrib deb…

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Install Varnish Cache On Debian 7

Rumi, November 6, 2016

Normally Varnish Cache is available on Debian default repositories. But i suggest you to use Varnish Cache repositories to get latest version of Varnish Cache. Run the following commands as root user to install Varnish Cache. # curl http://repo.varnish-cache.org/debian/GPG-key.txt | apt-key add – # echo “deb http://repo.varnish-cache.org/debian/ wheezy varnish-3.0” >>…

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Understandign CHMOD- the basics

Rumi, September 22, 2016

There are four OCTAL (0..7) digits, which control the file permissions. But often, only three are used. If you use 600 it equals 0600. The missing digit is appended at the beginning of the number. Each of three digits described permissions. Position in the number defines to which group permissions…

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OpenDKIM Postfix SMTP Relay Server on Debian -7

Rumi, September 11, 2016February 26, 2024

Install OpenDKIM Before starting the installation, a system update is recommended: sudo apt-get update sudo apt-get dist-upgrade Install OpenDKIM and it’s dependencies: sudo apt-get install opendkim opendkim-tools Additional packages will be listed as dependencies, type yes and press Enter to continue. Configure OpenDKIM A couple of files must be created…

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How to install Legacy Photoshop 7 on windows 10

Rumi, July 30, 2016

Regarding the OP’s problem, it appears the installer exe requires to use resources held by other processes. For me it was Skype and Logitech wireless mouse software. To work out what is “blocking” the installer: start  task manager, you’ll see setup.exe running as a background process but consuming no CPU…

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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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