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Generating an SSH Key Pair on Windows Using the PuTTYgen and use it on OCI with machine instance

Rumi, June 29, 2022

The PuTTYgen program is part of PuTTY, an open source networking client for the Windows platform. To generate an SSH key pair on Windows using the PuTTYgen program: Download and install PuTTY or PuTTYgen.To download PuTTY or PuTTYgen, go to http://www.putty.org/ and click the You can download PuTTY here link….

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Convert VirtualBox VM to ProxMox VE

Rumi, June 24, 2022June 24, 2022

On the VirtualBox host, launch VirtualBox Right click the VM to convert > Settings Select Storage from the left navigation Click the virtual hard disk and copy the Location value for the full path of the disk to the clipboard Right click on the Start menu > Run > type…

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Clean RDP Sessions

Rumi, June 18, 2022

Just found it useful with the garbage of RDP session to clean- Paste the below lines on a notepad and rename it- rdp_clean.bat. Execute the batch file through cmd line as admin user. @echo off reg delete “HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Default” /va /f reg delete “HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Servers” /f reg add…

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Install MariaDB 10 on Centos or Springdale Linux

Rumi, June 18, 2022

Step 1: Add MariaDB Yum Repository Start by adding the MariaDB YUM repository file MariaDB.repo for RHEL/CentOS and Fedora systems. # nano /etc/yum.repos.d/MariaDB.repo Now add the following lines to your respective Linux distribution version as shown. [mariadb] name = MariaDB baseurl = http://yum.mariadb.org/10.1/centos7-amd64 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB gpgcheck=1

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Disable ipv6 on Linux Machine

Rumi, June 18, 2022

Disable on Centos/RHEL system: 1. Append below lines in /etc/sysctl.conf: net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 NOTE : To disable IPv6 on a single interface add below lines to /etc/sysctl.conf : net.ipv6.conf.[interface].disable_ipv6 = 1 ### put interface name here [interface] net.ipv6.conf.default.disable_ipv6 = 1 2. To make the settings affective, execute…

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Install Development Tool on CentOS and Debian

Rumi, June 17, 2022

Well, in my working domain I face these tools to be installed, so that most of the dependent tools or programs that need to be deployed later don’t face much of dependency issue. So here goes the installation process for both the OS. On CentOS/RHEL system use the follwoing command…

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Install Proxmox VE 7 on Debian 11 (Bullseye)

Rumi, June 17, 2022July 18, 2023

Step 1: Update Debian OS Ensure your Debian 11 (Bullseye) operating system is upgraded. sudo apt -y update && sudo apt -y upgrade Once the upgrade process is complete, reboot the server sudo systemctl reboot Step 2: Set Proxmox Server hostname Let’s set a hostname on the server sudo hostnamectl…

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Delete Old Unused Kernels in Debian

Rumi, June 17, 2022

To find out the current version of Linux kernel running on your system, use the following command. $ uname -sr Linux 4.12.0-041200-generic To list all installed kernels on your system, issue this command. $ dpkg -l | grep linux-image | awk ‘{print$2}’ linux-image-4.12.0-041200-generic linux-image-4.8.0-22-generic linux-image-extra-4.8.0-22-generic linux-image-generic Remove Old Unused Kernels…

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Install Cacti 1.2 on Debian 11

Rumi, June 17, 2022

First, update the repository index. sudo apt update Install MariaDB Database Install MariaDB from Official MariaDB Mirror Update the repository index and install the required packages. sudo apt update sudo apt install -y software-properties-common dirmngr apt-transport-https wget curl Add signing key to your system. curl -fsSL https://mariadb.org/mariadb_release_signing_key.asc | sudo gpg…

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Install VirtualBox legacy version 5.x on CentOS 7

Rumi, June 11, 2022

Install Dependencies Install Extra Packages for Enterprise Linux (EPEL) # sudo yum install epel-release wget -y Install Dynamic Kernel Module Support (DKMS) # sudo yum –enablerepo=epel install dkms -y This will install quite a few packages: Install Development Tools # sudo yum groupinstall “Development Tools” -y

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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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