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Category: Administrations

Webmin installation on Centos

Rumi, January 15, 2018

Installing the RPM If you are using the RPM version of Webmin, first download the file from the downloads page, or run the command : wget http://prdownloads.sourceforge.net/webadmin/webmin-1.870-1.noarch.rpm then install optional dependencies with : yum -y install perl perl-Net-SSLeay openssl perl-IO-Tty perl-Encode-Detect and then run the command : rpm -U webmin-1.870-1.noarch.rpm

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CentOS 5 Repository fix using vault.centos.org

Rumi, January 15, 2018March 24, 2019

It’s a bit silly process, googled hours but found not solid way to update my old 32bit centos 5 linux box. So came up with a solution of my own. It might work for you, but no guarantee! Step-1 Remove all .repo inside /etc/yum.conf.d/ directory Step-2 Create a new repo…

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Add Google Calendar to Thunderbird Mail Client

Rumi, January 8, 2018

There are two plugins that must be installed: Lightning – the actual calendar plugin Provider for Google – allows bidirectional access to Google Calendar Install both of these plugins, from within Thunderbird (Menu button | Plugins | See all and then search for Lightning and then Provider for Google. Click Add to…

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Convert .ova and import it on Proxmox KVM virtualization

Rumi, January 8, 2018

Let’s start uploading the exported ova file to the proxmox server. Extract the OVA file: tar -xvf *.ova This should output a couple of files from the OVA container, it should include an OVF file, which is the VM Defenition file, and a VMDK file, which is the actual hard…

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Fix on connecting to NFS server from Proxmox Centos 7/Debian Container

Rumi, January 7, 2018November 11, 2019

I hope you already know how to allow NFS from proxmox host server. if not, you may read my earlier post: NFS fix on LXC Host Server The fix works for Proxmox 4.x I was actually receiving a error like below: # mount -t nfsd nfsd /proc/fs/nfsd mount: nfsd is…

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BIND ACL to restrict zone trasfer with IP address

Rumi, December 17, 2017

You need to define ACL in /etc/named.conf or /etc/bind/named.conf.local file. Let us say IP 1.2.3.4 and 1.2.3.5 are allowed to transfer your zones. # vi named.conf or vi /etc/bind/named.conf.local Here is sample entry for domain domain.org.bd (ns1 configuration): acl trusted-servers { 1.2.3.4; //ns1 1.2.3.5; //ns2 }; zone “domain.org.bd” { type…

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LEMP on Centos 6

Rumi, December 10, 2017

In this guide, we’ll walk you through installing all of these components (except for Linux, which is already installed as your OS when you create the server). Install the Extra Packages for Enterprise Linux Repository (or EPEL for short):sudo yum install epel-release Run a yum update to sync your packages with the…

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Enable VNC viewer for Proxmox 2.x/3.x with tightvnc

Rumi, December 10, 2017

Configure Proxmox host for TLS connections: This configures the host to accept VNC connections. aptitude install openbsd-inetd Run this to get your KVM id’s : qm list root@homenet-home10 /etc # qm list VMID NAME STATUS MEM(MB) BOOTDISK(GB) PID 101 freenas stopped 1024 32.00 0 102 debpbx running 512 0.00 573304 105…

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Install Apache Tomcat 8.5 on CentOS 7.3

Rumi, December 10, 2017

Prerequisites Server with CentOS 7 – 64bit 2 GB or more RAM (Recommended) Root Privileges on the server Step 1 – Install Java (JRE and JDK) In this step, we will install the Java JRE and JDK from the CentOS repository. We will install Java 1.8.11 on the server with…

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Load Balancing using Ldirectord on Linux (Apache) web server

Rumi, November 23, 2017

For this setup, we need four nodes (two Apache nodes and two load balancer nodes) and five IP addresses: one for each node and one virtual IP address that will be shared by the load balancer nodes and used for incoming HTTP requests. I will use the following setup here: Apache node…

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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 icinga iptables Jitsi LAMP Letsencrypt Linux Munin MySQL Nagios Nextcloud NFS nginx openvpn pfsense php Postfix Proxmox RDP Softether SSH SSL Ubuntu Ubuntu 16 Ubuntu 18 Ubuntu 20 Varnish virtualbox vpn Webmin Windows 10 XCP-NG zimbra

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