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Category: Administrations

Build an openDNS recursive resolver DNS using Bind

Rumi, December 18, 2021August 9, 2023

It’s a small thing, but someone might feel it to be useful of running a public DNS like google has 8.8.8.8. You actually can build a recursive DNS and serve to the world (instead to your network user only! 🙂 ) Install Bind apt install bind9 bind9utils -y It’s pretty…

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Install Proxmox VE 7 on Debian 11 (Bullseye)

Rumi, December 16, 2021

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, December 16, 2021

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, December 16, 2021

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, December 16, 2021

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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osTicket Automated Install Script

Rumi, December 13, 2021

osTicket is one of the leading open source ticketing systems. Here’s an easy way to spin up an instance on Ubuntu. Note: This script is purely intended for use in short-lived demo systems. The passwords are obvious (password !?) and there is no hardening applied to any of this system….

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Configuring SMTPS in Virtualmin

Rumi, December 13, 2021December 13, 2021

Under System Settings > Server Templates (and under the dropdown menu “Edit template section”) > Mail client auto-configuration. In the section Thunderbird auto-configuration XML, under the heading outgoingServer, I changed the port from $SMTP_PORT to $SMTPS_Port and selected XMLtemplate below as opposed to Automatically generated. My XML template is therefore…

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Mapping drives with Windows Explorer in Nextcloud

Rumi, November 26, 2021November 26, 2021

To map a drive using the Microsoft Windows Explorer: Open Windows Explorer on your MS Windows computer. Right-click on Computer entry and select Map network drive… from the drop-down menu. Choose a local network drive to which you want to map Nextcloud. Specify the address to your Nextcloud instance, followed…

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Install SmokePing on CentOS 7

Rumi, August 6, 2021August 7, 2021

This tutorial explains how to install Tobias Oetiker’s Smokeping into /opt/smokeping on a CentOS 7 box. Features of Smokeping: – Best of breed latency visualisation. – Interactive graph explorer. – Wide range of latency measurement plugins. – Master/Slave System for distributed measurement. – Highly configurable alerting system. – Live Latency…

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Configure Debian Software RAID 1 during installation

Rumi, August 6, 2021

Step 1 Perform normal installation process up to the disk partitioning menu. Step 2 Select manual partitioning method in the disk partitioning menu. Step 3 Create empty partition table on each disk used to create RAID1 array.

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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 icinga iptables Jitsi LAMP Letsencrypt Linux Munin MySQL Nagios Nextcloud NFS nginx openvpn pfsense php Postfix powerdns Proxmox RDP SSH SSL Ubuntu Ubuntu 16 Ubuntu 18 Ubuntu 20 Varnish virtualbox vpn Webmin Windows 10 XCP-NG zimbra

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