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.

Install Qemu Guest Agent on Proxmox

Rumi,

The qemu-guest-agent is a helper daemon, which is installed in the guest. It is used to exchange information between the host and guest, and to execute command in the guest. In Proxmox VE, the qemu-guest-agent is used for mainly two things: To properly shutdown the guest, instead of relying on…

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Install Observium CentOS 7/Ubuntu 16.04/ Debian 9

Rumi,

Observium is an open source, low-maintenance, auto-discovering network monitoring tool for operating systems and network hardware. It supports Linux and Windows operating systems and network hardware like Cisco, Juniper, Brocade, Foundry, HP. Observium is based on AMP (Apache, MySQL, and PHP) stack and it collects the monitoring metrics via SNMP protocol. It uses RRDtool to make a graph of metrics…

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Zimbra 8.8 on CentOS 7

Rumi,

Before we proceed with Zimbra Collaboration Suite installation process, first login to your server console with root privileges and install the following packages: # yum -y install unzip net-tools sysstat openssh-clients perl-core libaio nmap-ncat libstdc++.so.6 perl perl-core ntpl nmap sudo libidn gmp libaio libstdc++ unzip sqlite dnsmasq Next, issue getenforce command to check…

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Install PHP 7.2 on Debian 9

Rumi,

Before you start with the installation of PHP 7.2 on your Debian VPS, make sure that you have full root access to it. Connect to the server via SSH and upgrade all the system software to the latest version available. You can do this by running the following commands in…

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SNMP Client Configuration for Observvium

Rumi,

This can be placed in /etc/snmp/snmpd.conf and will provide the required parameters for Observium. This example use version 2c snmp auth. Community string: Replace community_string with your unique community string. # Listen for connections on all interfaces (both IPv4 *and* IPv6) agentAddress udp:161,udp6:[::1]:161 # Full view access view all included…

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Install Proxmox VE 6 on Debian 10 (Buster)

Rumi,

Proxmox Virtual Environment (VE) is an enterprise-grade open-source server virtualization solution based on Debian Linux distribution with a modified Ubuntu LTS kernel. It allows you to deploy and manage both virtual machines and containers. This setup presumes you have a running Debian 10 Buster Linux server running. If you don’t…

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Zimbra GUI Customization- Logo, Title, Footer

Rumi,

To change logo (On Zimbra 8.6 and onwards) zmprov md mail.dscsc.mil.bd zimbraSkinLogoLoginBanner https://yourdomain.com/zimbra/MyLoginBanner.png zmprov md mail.dscsc.mil.bd zimbraSkinLogoAppBanner https://yourdomain.com/zimbra/MyAppBanner.png To change logo height: changed hhe contents of file /opt/zimbra/jetty/webapps/zimbra/skins/_base/base3/skin.properties … 90 LoginH1 = margin:0 0 30px 30px; 91 LoginAppName = display:none; 92 LoginLabelColor = @TxtC@ 93 LoginButton = @ButtonShadowDefault@ border:1px solid @ButtonBorderColor@;…

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