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Category: Configurations (Linux)

VBoxHeadless Running Virtual Machines With VirtualBox On A Headless Debian/ubuntu Server

Rumi, August 3, 2012December 4, 2017

I have implemented this on Debian 6 (Squeeze system) with the IP address 192.168.0.100 where I’m logged in as root. Installing VirtualBox To install VirtualBox 4.1 on our Debian server, we open /etc/apt/sources.list… added this line- deb http://download.virtualbox.org/virtualbox/debian squeeze contrib non-free Use appropriate OS source list from https://www.virtualbox.org/wiki/Linux_Downloads Then we…

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MySQL Database Import Command

Rumi, July 31, 2012

The syntax is as follows to import the data created by mysqldump command: mysql -u {DB-USER-NAME} -p {DB-NAME} < {db.file.sql} mysql -u {DB-USER-NAME} -h {MySQL-SERVER-HOST-NAME} -p {DB-NAME} < {db.file.sql} In this example import a file called sales.sql for salesdb1 user and sales db, enter: $ mysql -u sales -p salesdb1…

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Nagios JBoss Plugin

Rumi, June 25, 2012

Perl script to check thread and memory usage of a Jboss server. I didn't like the Jboss checks that I've found which require Java or remote-run, so I wrote this. It's a simple check that looks at memory usage and busy threads. I did this with percentage thresholds to make…

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Icininga on SSL

Rumi, June 25, 2012

    This is intended to be an introduction for implementation of stronger authentication and server security focused around the CGI web interface. There are many ways to enhance the security of your monitoring server and Icinga environment. This should not be taken as the end all approach to security….

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Nagios LDAP Monitoring (works for icinga as well)

Rumi, June 20, 2012June 20, 2012

on commands.cfg file   define command {         command_name check_ldaps         command_line    $USER1$/check_ldap.pl -H 192.168.0.123 -p 389 } on your <server.cfg> file-   define service{      use generic-service   ; template name, available by default      host_name LDAP  ; unique name…

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Install Perl CPAN on CentOS troubleshooting Net::LDAP

Rumi, June 20, 2012June 20, 2012

First we need to make sure our perl modules are all there and up to date. We can do this easily by Running perl -MCPAN -e –shell Let it run. Answer “no” when it asks about Manual configuration.   Once it stops you'll be at the cpan prompt….type install Bundle::CPAN this will…

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Installing NRPE For Icinga on Ubuntu 10.10 & CentOS 5.5

Rumi, June 11, 2012June 11, 2012

I currently have Icigna 1.2 (classic, web, and mobile) running on Ubuntu 10.10. I have a few other Linux servers that I would like to monitor as well. There is a good amount of information on installing Nagios and things to accompany it but Icigna documentation and blogs are fewer….

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Step by Step Zimbra 6.x installation on CetOS 5.x

Rumi, June 11, 2012June 11, 2012

First you need to install a fresh CentOS operating system, keeping almost everything as default state. In this installation note I'm assuming few things- There is either a LARGE '/' partion or a LARGE '/opt' partition. Zimbra by  default is installed on /opt directory I'm also assuming that the server…

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Running Zimbra on HTTPS

Rumi, June 11, 2012

1. First you need to su as 'zimbra' user 2. go to /opt/zimbra/bin/ 3. Use the following commands to enable SSL: ./zmtlsctl https ./zmcontrol restart Now it's working like a charm. For other readers: I can only access to webclient by SSL now (but that's ok for me). other options…

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Deploying a J2EE application behind an Apache server in a production environment

Rumi, April 20, 2012

You have created a Web application using a JBoss application server and you are going to put it in production. Great! But deploying your application with JBoss serving the Web requests directly may not be the optimal solution. First because the Tomcat web server embedded within JBoss is not 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.

Tags

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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