Author: Rumi

Hasan T. Emdad is an ICT Solution Architect, Project Manager with 12+ year expertise in HW selection, OS expertise on Linux and MS, Supervising Application SW on Pearl, Java, dot Net and PHP with DB experience of MySQL, Postgre, MS and Oracle. He was involved in setting up several Turn Key ICT including Telecom based projects on various government and autonomous bodies in the country. Developed more than 50 applications running with different operators and users. Managing a team of more than 10 in-house engineers and developers and manages an outsourcing team experts and contributors. Very recently engineered Public Key Infrastructure (PKI) on Enterperise and Root Certifying Authority and deployed scalable Cloud Computing and Managed Services. He has post graduated (MBA) from University of Dhaka, Bangladesh.

Docker Commands

Rumi,

Working with Docker Images Docker containers are built from Docker images. By default, Docker pulls these images from Docker Hub, a Docker registry managed by Docker, the company behind the Docker project. Anyone can host their Docker images on Docker Hub, so most applications and Linux distributions you’ll need will have…

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Install Docker on Debain 10

Rumi,

Installing Docker The Docker installation package available in the official Debian repository may not be the latest version. To ensure we get the latest version, we’ll install Docker from the official Docker repository. To do that, we’ll add a new package source, add the GPG key from Docker to ensure…

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Bash Script To Restart Linux Server Services

Rumi,

Here’s the command line code to create the file in nano: sudo nano /opt/launch-crashed-services.sh Here is the bash script. #!/bin/bash service mysql status | grep ‘active (running)’ > /dev/null 2>&1 if [ $? != 0 ] then sudo service mysql restart > /dev/null fi service nginx status | grep ‘active…

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Install Proxmox VE 7 on Debian 11 (Bullseye)

Rumi,

In this guide, we will cover a step-by-step installation of Proxmox VE 7 virtualization software on Debian 11 (Bullseye) Linux system. It’s recommended to deploy Proxmox VE server from a Bare-metal_ISO_Installer, but it’s sometimes inevitable to deploy it on a running instance of Debian 11 (Bullseye) server. Setup Pre-requisites For…

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Install Netxtcloud on Debian 10

Rumi,

Install Apache, MariaDB and PHP NextCloud runs on the webserver, written in PHP and uses MariaDB to store their data. So you will need to install Apache, MariaDB, PHP and other required packages on your system. You can install all of them by running the following command: apt-get install apache2…

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SSL on Debian 10 Apache2

Rumi,

Assuming you have an SSL certificate already downloaded and available on the server. root@www:~#nano /etc/apache2/sites-available/default-ssl.conf # line 3: change admin email ServerAdminwebmaster@srv.world # line 32,33: change to the certs gotten in section [1] SSLCertificateFile /etc/letsencrypt/live/www.srv.world/cert.pem SSLCertificateKeyFile /etc/letsencrypt/live/www.srv.world/privkey.pem # line 42: uncomment and change to the chain-file gotten in section SSLCertificateChainFile…

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Install a Sectigo Domain Validation SSL certificate in Zimbra

Rumi,

We usually get the below four files from Sectigo in the certificate bundle. The file name may vary depending on the certificate type yourdomain.com.crt – main certificate AAACertificateServices.crt – Root Certificate USERTrustRSAAAACA.crt – Intermediate Certificate – 1 SectigoRSADomainValidationSecureServerCA.crt – Intermediate Certificate – 2 Step 1: We shall create two files as…

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