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CentOS 7 Server Installation with Software RAID

Rumi, September 4, 2022

Install the Operating System Boot from the USB flash drive and select Install CentOS 7 When the welcome screen of the CentOS installer appears, choose your language and just click on Continue

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VPNGATE from SoftEther Community

Rumi, September 4, 2022

VPN Gate Academic Experiment Project is an online service as an academic research at Graduate School of University of Tsukuba, Japan. The purpose of this research is to expand the knowledge of “Global Distributed Public VPN Relay Servers” . How does VPN Gate work? VPN Gate network consists of many…

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SSH Key-Pair Authentication

Rumi, September 3, 2022

Create Key-Pair by each user, so login with a common user on SSH Server Host and work like follows. # create key-pair debian@dlp:~$ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/home/debian/.ssh/id_rsa): # Enter or input changes if you want Created directory ‘/home/debian/.ssh’. Enter passphrase…

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Remove DNSCACHE from zimbra services.

Rumi, September 3, 2022

If you will get a prompt stating something like “Port conflict detected: 53 (zimbra-dnscache)” with a prompt to hit ENTER to continue, you can just hit enter and let the installation/upgrade run out. Once everything is running, you will see that the Zimbra DnsCahe service is in a stopped state….

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Redirect all request to public/ folder in laravel 5

Rumi, August 19, 2022

There are two solutions: 1. Using .htaccess with mod_rewrite RewriteEngine on RewriteCond %{REQUEST_URI} !^public RewriteRule ^(.*)$ public/$1 [L] 2. You can add a index.php file containing the following code and put it under your root Laravel folder (public_html folder). <?php header(‘Location: public/’); Src: https://stackoverflow.com/questions/38040502/how-do-you-redirect-all-request-to-public-folder-in-laravel-5

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Install MySQL 5.7 on CentOS 7

Rumi, August 10, 2022

Preqrequsite: It’s better to have installed development tools and disable NetworkManager for a produciton envrionment. You can optionally follow the steps- Disabling NetworkManager: systemctl stop NetworkManager systemctl disable NetworkManager Install Development Tools: yum group install “Development Tools” Remove MariaDB pre-installed libraries- yum -y remove mariadb-libs Enable MySQL Repository First of…

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Oracle DRCC

Rumi, August 3, 2022
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Postfix SMTP Rotating IP using IPTables

Rumi, August 1, 2022

I got 5 Public IPs. i’m Gonna configure them, so Postfix can use multiple interfaces/ips for outgoing smtp connections. First we need creating Interface aliases for those 5 public IPs. In my system, using centos: # cd /etc/sysconfig/network-scripts/ # cp ifcfg-eth0 ifcfg-eth0:1 Edit ifcfg-eth0:1 # vi ifcfg-eth0\:1 DEVICE=eth0 <– default…

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vestacp open: /etc/named.conf: permission denied

Rumi, August 1, 2022

This was the error I was getting after a doing a little change in the named.conf in my newly installed vesta control panel. While restarting the named, I was getting this error- [root@vesta2 ~]# systemctl status named.service ● named.service – Berkeley Internet Name Domain (DNS) Loaded: loaded (/usr/lib/systemd/system/named.service; enabled; vendor…

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Observium Installer Script on Ubuntu 20.04 or Debian 11

Rumi, July 25, 2022

Automated Installation Observium has an automated install script for use on Ubuntu and Debian systems. Using the automated installation script is as easy as downloading it, running it and answering a few simple questions, start with: wget http://www.observium.org/observium_installscript.sh chmod +x observium_installscript.sh ./observium_installscript.sh You may need to install wget on bare…

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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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