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  • Data Center Solution

    A data centre is a facility where companies can keep and operate most of the ICT infrastructure that supports their business. IT host the most critical systems that are vital to the continuity of daily operations...

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  • Monitor your network and systems like a hawk

    There are some perfact open souce solution for monitoing your Network devices and server system's health. Nagios, Cacti, WhatsUpGold and Smokeping are the leading monitoring tools among them...

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  • Email service and Security

    Now a days life without email service is unthinkable and E-mail service is quite expensive. As always linux gives us the answer with a strong mail service named postfix...

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  • Data Center Solution

    A data centre is a facility where companies can keep and operate most of the ICT infrastructure that supports their business. IT host the most critical systems that are vital to the continuity of daily operations...

    Read More
  • Monitor your network and systems like a hawk

    There are some perfact open souce solution for monitoing your Network devices and server system's health. Nagios, Cacti, WhatsUpGold and Smokeping are the leading monitoring tools among them...

    Read More

Sunday, October 12, 2014

MYSQL ERROR 1051 (42S02): Unknown table corrupttablename

Very rare we got a message to the browser saying "Unknown table tablename". Though we have the database and the table properly to the server. To solve the issue, we need to follow the below steps- ERROR 1051 (42S02): Unknown table corrupttablename [root@db ~]# service mysqld stop[root@db ~]# mv /var/lib/mysql/database_name/corrupttablename.frm /tmp[root@db ~]# service mysqld sta...

Wednesday, August 27, 2014

How to capture network traffic using Wireshark & TCPdump

How to capture network traffic using Wireshark & TCPdump Using Wireshark (Grafical interface) Install wireshark: mahidul@mtr:~$ sudo apt-get install wireshark Or, download it from official site https://www.archlinux.org Error: Wireshark not listing interfaces on Ubuntu 12.04 precise pangolin Solution: mahidul@mtr:~$ sudo dpkg-reconfigure wireshark-common mahidul@mtr:~$ sudo usermod -a -G wireshark $USER mahidul@mtr:~$ sudo reboot Reference: http://it-connects.co/wireshark-not-listing-interfaces-on-ubuntu-12-04-precise-pangolin/ Using...

Friday, June 13, 2014

Burning CD/DVD using CLI in linux (redhat/debian/ubuntu)

Burning CD/DVD using CLI: 1. find cdrom/dvdrom 2. make an iso     i. create an iso     ii. create an iso from collecting data from diffrent location     iii. add new data to an existence iso 3. burn the disk (cd/dvd)     i. single session burning     ii. Multi-session burning     iii. Blank a disk for re-writing cd/dvd (re-writable disk) 1. First findout the cd drive. Here my cd/dvd rom is dev=1,0,0 root@mahidul:~# cdrecord --devices wodim: Overview of...

Monday, June 2, 2014

Install and Configure Hudson in redhat 6.x

Install and Configure Hudson in redhat 6.x Packages Requirements: . Java . Apache . Apache-tomcat Installing java: Download the leatest java from http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html#jdk-7u10-oth-JPR [root@hudson~]# mkdir -p /usr/jdk [root@hudson~]# tar -zxvf /Packages/jdk-7u10-linux-x64.tar.gz -C /usr/jdk/ [root@hudson~]# ls /usr/jdk/jdk1.7.0_10/ Installing Apache2: [root@hudson~]#...

Tuesday, May 6, 2014

How to rotate your application logs

How to rotate your application logs Concept: We use system's logrotate script to rotate our services logs. This (/etc/logrotate.conf) is a default script of the system which is executed by cronjob (/etc/cron.daily/logrotate) for log rotation. So, logration script and cronjob is already prepared by system, all we need to do is create a new file on (/etc/logrotate.d/) directory for our application and declair our requirement as below- [root@db1 ~]# vim /etc/logrotate.d/asterisk /var/log/asterisk/call.log {     #If the log file is...

Monday, April 28, 2014

Log-in problem and Nautilus problem in Ubuntu 12.04

Log-in problem and Nautilus problem in Ubuntu 12.04After a long search in web didn't find the right solution. Here is the solutions to fix those problems. Error1: Desktop is not comming after login in Ubuntu 12.04.Solution:mahidul@mahidul-pc:~$ sudo apt-get updatemahidul@mahidul-pc:~$ sudo apt-get -y install --reinstall ubuntu-desktopError2: Nautilus does not working in ubuntu 12.04. And error log shows as below- (Press Ctrl+Alt+F1)mahidul@mahidul-pc:~$ tail -f /var/log/syslogmahidul-pc kernel: [  809.241978] nautilus[3199]: segfault at ab...

Tuesday, April 8, 2014

How to install and configure Torrent client in redhat/centos 6.x

How to install and configure Torrent client in redhat 6 Topic Index:    1. Concept    2. Installation    3. Set global speed restriction    4. Start a download from Transmission-gui    5. Start a download from command line    6. Start a download from web interface    7. Create new Torrent    8. Download torrent file using cronjob    9. Troubleshooting 01....

How to install and configure JIRA in redhat/centos 6.x

How to install and configure JIRA Concept: JIRA is a proprietary issue tracking product, used for bug tracking, issue tracking and project management which is developed by Atlassian. We can install JIRA three different ways like using .bin, .war or .tar.gz files. Here I will show you how to install jira using .bin file. It's very easy and simple. Follow the below steps and total installation will be complete within a few minutes. Install mysql: [root@db1 ~]# yum -y install mysqld Or, download the following rpm packages and install from it. [root@db1...

Tuesday, February 18, 2014

How to install glances

How to install glances Introduction: In short Glances is a command line monitoring tools which present real time report regarding the following uses at a glance. 1. CPU uses, 2. server load, 3. memeory uses, 4. swap memory uses, 5. network interface uses, 6. HDD uses, and 7. Processes uses On RedHat    Download the packages: [root@gw ~]# wget ftp://ftp.univie.ac.at/systems/linux/fedora/epel/6/i386/glances-1.7.3-1.el6.noarch.rpm [root@gw ~]# wget ftp://ftp.univie.ac.at/systems/linux/fedora/epel/6/x86_64/python-psutil-0.6.1-1.el6.x86_64.rpm Simply...

How to configure yum repository (with groupinstall) in redhat 6

How to configure yum repository (with groupinstall) in redhat 6 Create a local repository repository: First insert the redhat 6.X dvd in the dvdrom and mount it. [root@gw ~]# mount /dev/dvdrw /mnt/ Copy the Packages folder to a location [root@gw ~]# cp -Rfv /mnt/Packages /storage/ [root@gw ~]# cd /storage/Packages Lets install dependencies for createrepo: [root@gw Packages]# rpm -ivh deltarpm-3.5-0.5.20090913git.el6.x86_64.rpm [root@gw Packages]# rpm -ivh python-deltarpm-3.5-0.5.20090913git.el6.x86_64.rpm [root@gw Packages]# rpm -ivh createrepo-0.9.8-4.el6.noarch.rpm [root@gw...

Thursday, January 16, 2014

How to install phpMyadmin from tar.gz

How to install phpMyadmin from tar.gz    Install Dependency(php and mysql): [root@nccsc ~]# yum install -y php* mysql-server [root@nccsc ~]# wget ftp://mirror.switch.ch/pool/1/mirror/scientificlinux/6.4/x86_64/os/Packages/php-mbstring-5.3.3-22.el6.x86_64.rpm [root@nccsc ~]# rpm -ivh php-mbstring-5.3.3-22.el6.x86_64.rpm Install phpMyAdmin: First download the latest tar from http://www.phpmyadmin.net/home_page/downloads.php. [root@nccsc ~]# wget http://garr.dl.sourceforge.net/project/phpmyadmin/phpMyAdmin/4.1.4/phpMyAdmin-4.1.4-all-languages.tar.gz [root@nccsc...