Virtualbox Disk Reduce or Disk Compact Rumi, February 9, 2016February 9, 2016 You have to do the following steps: 1. Run defrag in the guest (Windows only) Nullify free space: With a Linux Guest run this: sudo dd if=/dev/zero of=/bigemptyfile bs=4096k sudo rm -rf /bigemptyfile Or: telinit 1 mount -o remount,ro /dev/sda1 zerofree -v /dev/sda1 Or sudo apt-get install secure-delete sfill -f -z… Continue Reading
Reinstalling MySQL on CentOS/Redhat 6 Rumi, February 7, 2016 Some time we faces issues with MySQL installation on Linux machine. If we simply remove MySQL packages and re-install doesn’t fixes the issue, in that case old settings may still exists on server which again affects new install. In that case first uninstall MySQL completely from system and erase all… Continue Reading
Simple failover cluster using UCARP on Ubuntu (Heartbeat Alternative) Rumi, January 24, 2016 In this tutorial, I’ll show you the steps to create a simple failover cluster on Ubuntu using CARP. To make the things meaningful,we’ll create the cluster for Apache service but you can use it for any other service, which relay on IP. Scenario: Here is my Setup: PrimarySrv: This is the… Continue Reading
iExplore- Cool software for managing iPhone 5 Rumi, January 18, 2016 Was looking for a PC edition software that can interact and do all things on the iPhone, particularly- Backing up SMS Backing up contacts instead iCloud Accessing Notes Accessing Calendar Accessing Safari bookmarks Fundamentally above items are enough! SO let’s go, what I did to achieve it- iExplorer An iPhone,… Continue Reading
Just Love the truth! Rumi, January 11, 2016 ভাইয়া, ওর সাথে আমার পছন্দ–অপছন্দ, ভালো লাগা–না লাগার না অনেক পার্থক্য। কোনো কিছুতেই মেলে না। তাই ব্রেকআপ হয়ে গেল…।… Posted by Rajib Hasan on Sunday, January 10, 2016 Continue Reading
Server Monitoring with Munin and Monit on Ubuntu 14.04 LTS Rumi, January 6, 2016 Our system’s hostname is server1.example.com, and we have a website www.example.com on it with the document root/var/www/www.example.com/web. The following steps have to be performed as root user. To become root user on your server, run this command: sudo su Ensure that the system is up to date before you start… Continue Reading
Prophet Muhammad’s Last Sermon Rumi, December 26, 2015 Read it first in Bangla while was a school student, likely to be in my religion classes. Thought might be useful to other. Prophet Muhammad’s final sermon was delivered during the Hajj of the year 632 C.E., the ninth day of Dhul Hijjah, the 12th month of the lunar year,… Continue Reading
Linux Tune Network Stack (Buffers Size) To Increase Networking Performance Rumi, December 23, 2015 By default the Linux network stack is not configured for high speed large file transfer across WAN links. This is done to save memory resources. You can easily tune Linux network stack by increasing network buffers size for high-speed networks that connect server systems to handle more network packets. The… Continue Reading
Mount NFS Partition from WIndows 2008 Server Rumi, December 21, 2015December 21, 2015 On server 2008, go to the Server manager, and Add/Remove Programs. For my example, i already have file services installed on this server, if it’s not, install it as a role, and add this feature, “services for NFS” Continue Reading
How to Encrypt VNC Traffic with Putty Rumi, December 9, 2015 By default, VNC is not secure protocol.VNC uses encryption during initial connection and login (passwords are not sent in plain-text). Once, we connected then all the VNC data is unencrypted and hacker could sniff our VNC session. It is better (safer) to start VNC server only on 127.0.0.1(localhost) and tunnel it… Continue Reading