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Category: Administrations

Install VirtualBox on Centos 6 / 7

Rumi, September 6, 2019

Step 1 – Add Required Yum Repositories Firstly you are required to add VirtualBox yum repository in your system. Download repository file from its official site and place it under at /etc/yum.repos.d/virtualbox.repo .First navigate to /etc/yum.repos.d/ directory and use one of below commands as per your operating system. cd /etc/yum.repos.d/ wget http://download.virtualbox.org/virtualbox/rpm/rhel/virtualbox.repo…

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Monitor and Manage your services with Monit on CentOS 6 / RHEL 6

Rumi, September 6, 2019

Install Monit For Debian/Ubuntu Monit is easiest to install through apt-get: sudo apt-get install monit For RHEL: Configure EPEL repo to download the latest Monit package. [root@server ~]# rpm -Uvh http://epel.mirror.net.in/epel/6/i386/epel-release-6-8.noarch.rpm [root@server ~]# yum -y install monit Once monit downloads, you can add programs and processes to the configuration file:…

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Debian Wheezy repository

Rumi, September 2, 2019

Debian wheezy is no longer supported. It is two major releases older than stable. It has not received any updates since 31 May 2018. The resolution is to dist-upgrade to oldstable, or to stable. You can still use the archive repository but there is no more updates: deb http://archive.debian.org/debian wheezy…

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NGINX as a Reverse Proxy

Rumi, August 30, 2019

Configure NGINXPermalink At this point, you could configure Node.js to serve the example app on your Linode’s public IP address, which would expose the app to the internet. Instead, this section configures NGINX to forward all requests from the public IP address to the server already listening on localhost. Basic Configuration…

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Proxmox change from local-lvm to local storage

Rumi, August 30, 2019

First remove the existing LVM-Thin: lvremove pve/data Then create an normal lvm on existing group. For example: lvcreate -L 755.96G -n data pve Format it: mkfs.ext4 /dev/pve/data Mount it in the fstab. The mount target must be empty, so delete everything in there. /dev/pve/data /var/lib/vz ext4 defaults 0 2 rm…

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Installing NTP Service and change timezone in CentOS 6 / CentOS 7

Rumi, August 30, 2019

Let’s install NTP service first: yum install ntp Configure NTP services by updating the following section (only if appropriate): nano /etc/ntp.conf And by commenting on the sections: # Use public servers from the pool.ntp.org project. # Please consider joining the pool (http://www.pool.ntp.org/join.html). #server 0.centos.pool.ntp.org iburst #server 1.centos.pool.ntp.org iburst #server 2.centos.pool.ntp.org…

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Install and integrate DKIM with OpenDKIM and Postfix on a CentOS 6

Rumi, August 24, 2019February 4, 2024

UPDATE THE SYSTEM Before going any further, make sure you’re in a screen session and your system is fully up-to-date by running: ## screen -U -S opendkim-screen ## yum update ENABLE EPEL REPOSITORY OpenDKIM is available in the EPEL repository, so we need to enable it on the system before…

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Nginx Reverse Proxying Multiple Domains Using map Module

Rumi, August 24, 2019

map_hash_bucket_size 128; map $http_host $backend_servers { hostnames;     default                         www.example.com;     frontend.example2.com           backend.example2.com     frontend.example3.com           backend.example3.com     www.example.org                 backend.example.org } proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; server {     location / {         proxy_pass  http://$backend_servers     } }

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Install PHP 7.3, 7.2, 7.1 on CentOS/RHEL 6.10

Rumi, August 24, 2019

Configure Yum Repository First of all, you need to enable Remi and EPEL yum repositories on your system. Use the following command to install EPEL repository on your CentOS and Red Hat 7/6 systems Use this command to install epel-release yum repository yum install epel-release and now execute one of…

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Apache Virtual Hosts on CentOS

Rumi, August 24, 2019

Step One— Create a New Directory The first step in creating a virtual host is to a create a directory where we will keep the new website’s information. This location will be your Document Root in the Apache virtual configuration file later on. By adding a -p to the line…

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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.

Tags

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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