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Category: Administrations

Remove VirtualBox from Linux

Rumi, September 3, 2023

Step 1: Check the VirtualBox Version (Optional) First, check out the Virtualbox installed version by specifying the application package name as “vboxmange” name with the “version” flag:   $ vboxmanage –version The Virtualbox installed version is “6.1.38”. Step 2: Uninstall Virtual Box Use the default package manager alongside the “–remove” and…

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Enable IPTables on Rocky Linux 8

Rumi, September 2, 2023

Disabling firewalld You can’t really run the old iptables utilities alongside firewalld. They’re just not compatible. The best way to get around this is to disable firewalld entirely (no need to uninstall it unless you want to) , and reinstall the iptables utilities. Disabling firewalld can be done using these…

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IPTables D-NAT Firewall Rule

Rumi, September 2, 2023

# Generated by iptables-save v1.3.5 on Tue Oct 28 23:57:58 2014 *filter :INPUT ACCEPT [2590:547311] :FORWARD ACCEPT [11426:731834] :OUTPUT ACCEPT [3989:328501] -A INPUT -i eth0 -j ACCEPT COMMIT # Completed on Tue Oct 28 23:57:58 2014 # Generated by iptables-save v1.3.5 on Tue Oct 28 23:57:58 2014 *mangle :PREROUTING ACCEPT…

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Create A Network Bridge on CentOS 7

Rumi, September 1, 2023

Install Module CentOS 7 comes with bridging module loaded on system boot by default. Use the following command to verify whether the module is loaded or not. # modinfo bridge filename:       /lib/modules/3.10.0-327.el7.x86_64/kernel/net/bridge/bridge.ko alias:          rtnl-link-bridge version:        2.3 license:        GPL rhelversion:    7.2 srcversion:     905847C53FF43DEFAA0EB3C depends:        stp,llc intree:         Y vermagic:       3.10.0-327.el7.x86_64 SMP mod_unload modversions…

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Proxmox VDI Client

Rumi, September 1, 2023
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Upgrade Ubuntu 14 to Ubuntu 16

Rumi, August 28, 2023

I had a long old ubuntu 14 into my network, had an inevitable action to upgrade it to 16. Apply the simple 2 commands to make the updaration happening- sudo do-release-upgrade Use the below command for Ubuntu 14 machines: sudo apt-get dist-upgrade

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Convert Xen XVA to KVM

Rumi, August 23, 2023

Citrix Xen uses a custom virtual appliance format for import/export called “XVA”. it’s basically a strangely crafted tar-file. You don’t need this program to unpack this tar-file, just use your favourite tar unpacker (tar, gtar, bsdtar). Once unpacked you will end up with a lot of different files, ova.xml (which…

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Debian 8 (Jessie) repo updated-2023

Rumi, August 23, 2023

This worked for Debian 8 (Jessie) replace original /etc/sources.list with: deb http://archive.debian.org/debian/ jessie main non-free contrib deb-src http://archive.debian.org/debian/ jessie main non-free contrib deb http://archive.debian.org/debian-security/ jessie/updates main non-free contrib deb-src http://archive.debian.org/debian-security/ jessie/updates main non-free contribapt-update It will give a keyring error. I tried both:

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XOA on XCP-NG import and install

Rumi, August 23, 2023

Start a new SSH session to your XenServer host and run the commands below. ### Using curl ### [18:18 xcp-node-01 ~]# bash -c “$(curl -sS https://xoa.io/deploy)” ### Using wget ### [18:18 xcp-node-01 ~]# bash -c “$(wget -qO- https://xoa.io/deploy)” If you are using an old XenServer version, you may encounter SSL…

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Install transmission on Centos 7

Rumi, August 22, 2023

Step 1. First, you need to enable the EPEL repository on your system. yum install epel-release yum -y update Step 2. Installing Transmission on CentOS 7. Just run the following command to install Transmission: yum install transmission-cli transmission-common transmission-daemon Once complete, you can verify Transmission is installed by running the…

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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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