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Mounting OCI bucket on CentOS 7 Linux

Rumi, May 30, 2023June 14, 2023

Install s3fs-fuse In order to use this you have to enable EPEL Repository- sudo yum install epel-release sudo yum install s3fs-fuse [opc@linux8 ~]$ sudo yum install s3fs-fuse Last metadata expiration check: 0:00:41 ago on Sun 15 May 2022 05:40:13 PM CST. Dependencies resolved. ================================================================================================================================= Package Architecture Version Repository Size =================================================================================================================================…

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Nginx Reverse Proxy with Sub Directory Mapping

Rumi, May 30, 2023May 30, 2023

Setup Note: My web application has a sub-directory, 192.168.1.8:8088/messages, that I want to expose to the outside world as messages.mysite.com. I’ve gotten half way there but I seem to be stuck. My requirements are as follows Redirect the site from HTTP to HTTPS. As I cannot edit the links the…

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Rsync upload local files without replacing remote files

Rumi, May 27, 2023May 27, 2023

Disclaimer: This is basically one way sync- use at your own risk and dry run before any production deployment. Suppose you have a list of files on a remote host, some of which already exist locally. What you want is to transfer only those files that are not found locally….

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OpenVPN installer on CentOS 7

Rumi, May 27, 2023

Server Requirement: Centos 7 x86_64 Installation $ cd /tmp/ && yum install git -y && git clone https://github.com/puarudz/OpenVPN-AS-Unlimited && cd OpenVPN-AS-Unlimited/ && sed -i -e ‘s/\r$//’ centos7.sh && chmod 755 centos7.sh && ./centos7.sh Once installed go to- https://ip:943/admin login: openvpn pass: <your_password_during_installation> After first login, “Agree” to the terms. Now…

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Postfix to allow Mail Relay from a Trusted IP

Rumi, May 27, 2023

Make sure smtpd_recipient_restrictions has permit_mynetworks, something like this: smtpd_recipient_restrictions = permit_mynetworks,<more> This is the default, but if you have -o smtpd_recipient_restrictions=something on an smtpd line in master.cf then it will override main.cf setting. A sample configuration that worked for me is as below- smtp inet n – n – -…

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Install phpSysInfo on Debian/Ubuntu

Rumi, May 19, 2023

Log into the Debian/Ubuntu device Run the following commands in a terminal:# update repositories and install any available software updates sudo apt update sudo apt upgrade # install Apache HTTPD sudo apt install apache2 # install PHP components sudo apt install php7.3 php7.3-xml # download phpSysInfo wget https://github.com/phpsysinfo/phpsysinfo/archive/v3.3.2.zip # extract v3.3.2.zip sudo…

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Oracle Linux 8: How To Access the GRUB

Rumi, May 17, 2023

Reboot or start the instance. After the console screen is blank, there is only one or two seconds to press <escape key>. Press it several times as quickly as possible. If escape was pressed successfully, the Boot menu will be displayed, if not try again. Note that it is possible…

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How to unlock openvpn users

Rumi, May 17, 2023

Go to /usr/local/openvpn_as/scripts/ directory with root privileges. Reset all lockout policy lockouts now: ./sacli –key “vpn.server.lockout_policy.reset_time” –value “1” ConfigPut ./sacli start sleep 2 ./sacli –key “vpn.server.lockout_policy.reset_time” ConfigDel ./sacli start

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Install ZFS on Ubuntu

Rumi, May 17, 2023

Installing ZFS Filesystem on Ubuntu We will be using the command line Terminal application for the installation of the ZFS filesystem. To launch the command line Terminal, use the Ctrl+Alt+T keyboard shortcut. Now to install the ZFS filesystem on Ubuntu, issue the following command in Terminal: $ sudo apt install…

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Enable Password based authenticaiton in OCI compute instance

Rumi, May 13, 2023

If you want to use a password to access the SSH server, a solution for fixing the Permission denied error is to enable password login in the sshd_config file. To do this, open the file in a text editor.  This example uses the nano editor: sudo nano /etc/ssh/sshd_config In the file, find…

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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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