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Category: Configurations (Linux)

LEMP on Debian 7

Rumi, December 3, 2016December 3, 2016

Installing MySQL 5 In order to install MySQL, we run apt-get install mysql-server mysql-client You will be asked to provide a password for the MySQL root user – this password is valid for the user root@localhost as well as root@server1.example.com, so we don’t have to specify a MySQL root password…

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Identify WWN in linux

Rumi, December 3, 2016

Here are some useful commands for the most popular Linux/Unix operating systems to find your HBA WWN. There are several methods to identify HBA WWN for the fiber storage units in your server network. Method 1: (The hard way) Verified on Suse Linux Enterprise Server and CentOS/Redhat The info is…

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Endian Router Blocking IP on Public Interface

Rumi, November 20, 2016

You can make a general IP ban list. You need to go to Port forwarding / Destination NAT Create a new rule Click on the advanced mode Incoming IP: Type: Zone/VPN/Upllink. Select Uplink main – IP:All known. Incoming service port, Service: Any, Port: Any. In the Translate To section set…

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Install Varnish Cache On Debian 7

Rumi, November 6, 2016

Normally Varnish Cache is available on Debian default repositories. But i suggest you to use Varnish Cache repositories to get latest version of Varnish Cache. Run the following commands as root user to install Varnish Cache. # curl http://repo.varnish-cache.org/debian/GPG-key.txt | apt-key add – # echo “deb http://repo.varnish-cache.org/debian/ wheezy varnish-3.0” >>…

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OpenDKIM Postfix SMTP Relay Server on Debian -7

Rumi, September 11, 2016February 26, 2024

Install OpenDKIM Before starting the installation, a system update is recommended: sudo apt-get update sudo apt-get dist-upgrade Install OpenDKIM and it’s dependencies: sudo apt-get install opendkim opendkim-tools Additional packages will be listed as dependencies, type yes and press Enter to continue. Configure OpenDKIM A couple of files must be created…

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Reset a MySQL root password for Debian

Rumi, July 14, 2016

Use the following steps to reset a MySQL root password by using the command line interface. Stop the MySQL service (Ubuntu and Debian) Run the following command: sudo /etc/init.d/mysql stop (CentOS, Fedora, and Red Hat Enterprise Linux) Run the following command: sudo /etc/init.d/mysqld stop Start MySQL without a password Run…

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Install ioncube on Linux server

Rumi, July 14, 2016

Begin by downloading the latest loaders to your computer from http://www.ioncube.com/loaders.php Extract the contents of the archived file on your local PC to a folder of your choice. Upload the folder IONCUBE via FTP to your domain webspace Now establish an SSH connection with server using a suitable client (e.g….

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ip_conntrack table full, dropping packet

Rumi, July 3, 2016

Last week, I found myself with a server under low load, but it couldn’t make or receive network connections. When I ran dmesg, I found the following line repeating over and over: ip_conntrack: table full, dropping packet I’d seen this message before, but I headed over to Red Hat’s site…

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Auto installation of Zenoss on CentOS 6

Rumi, June 19, 2016

The simplest way to install Zenoss Core 4.2 on a newly-deployed RHEL/CentOS 64-bit 5/6 system is to use our auto-deploy script, which downloads all required files for you. To use the script, first set up a new server running one of our supported operating systems. Then, as root, run the…

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413 Request Entity Too Large

Rumi, June 9, 2016

If you’re getting 413 Request Entity Too Large errors trying to upload with nginx.net/, you need to increase the size limit in nginx.conf . Add ‘client_max_body_size xxM’ inside the server section, where xx is the size (in megabytes) that you want to allow. http { include mime.types; default_type application/octet-stream; sendfile…

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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 endian icinga iptables Jitsi LAMP Letsencrypt Linux Munin MySQL Nagios Nextcloud NFS nginx 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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