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Category: Configurations (Linux)

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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Hiding X-Powered by on JBoss Application Server 4.22.x

Rumi, April 20, 2012

JBoss can add headers in the HTTP response. The X-Powered-By header exposes what implementation is behind your site. This header is created by a servlet filter that is activated by default in JBoss web configuration files (…/usr/java/jboss-4.2.2.GA/server/default/deploy/jboss-web.deployer/conf/web.xml). You can either disable this filter by commenting the following lines:    <filter>…

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mod_jk for RHEL6

Rumi, April 20, 2012

  If you have a RHEL6 box which ships both Apache and Tomcat6 you might want to connect the two together. You probably have looked around for mod_jk as a RHEL6 RPM or SRPM (src.rpm). You find that It isn't in EPEL, and it isn't in Red Hat Optional Server…

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Group-Office installation on Debian 6.x

Rumi, April 1, 2012April 1, 2012

I used the auto installation as guided by the group-office wiki. However, for conveniences, quoting the contents once again: Easy installation on a dedicated Debian or Ubuntu server This is the easiest way of installing Group-Office. With the debian packages everything is configured automatically and Group-Office updates will be installed…

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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 squid SSH SSL Ubuntu Ubuntu 16 Ubuntu 18 Ubuntu 20 Varnish virtualbox vpn Webmin XCP-NG zimbra

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