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Category: Administrations

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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Softether Linux Client using Bridged with Softether VPN Server

Rumi, August 2, 2021

It’s assumed that you already have a vpn server deployed in your network, created user, password and enabled bridged network during vpn server configuration. A sample snippet of VPN Server Bridge enabled is below- So here’re the setup value- On Softether Server IP- 103.146.221.30/24 and Gateway- 103.146.221.1 Client Server IP-…

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Install ONLYOFFICE Document Server with Nginx on Debian 10

Rumi, August 1, 2021

Step 1 – Install Packages Dependencies In this first step, we will install some packages dependencies needed by the Document Server, including the RabbitMQ-server, Redis, and Nginx-extras. Update your Debian system repository and install Document Server packages dependencies using the apt command below. sudo apt update sudo apt install redis-server…

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Cloning KVM virtual machine using CLI

Rumi, July 21, 2021

To clone your VM and spawn new instances in KVML # virt-clone –original {Domain-Vm-Name-Here} –auto-clone OR # virt-clone –original {Domain-Vm-Name-Here} –name {New-Domain-Vm-Name-Here} –auto-clone OR # virt-clone –original {Domain-Vm-Name-Here} \ –name {New-Domain-Vm-Name-Here} –file {/var/lib/libvirt/images/File.Name.here}

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Install Lancache on Debian 10

Rumi, July 20, 2021July 20, 2021

Step 1: 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…

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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 SSH SSL Ubuntu Ubuntu 16 Ubuntu 18 Ubuntu 20 Varnish virtualbox vpn Webmin Windows 10 XCP-NG zimbra

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