Miracle of Humankind- of the grace of Allah! Survivors after 17 days of building collapse Rumi, May 10, 2013May 10, 2013 DHAKA, Bangladesh (AP) — A seamstress buried in the wreckage of a collapsed garment factory building for 17 days was rescued Friday, a miraculous moment set against a scene of unimaginable horror, where the death toll shot past 1,000. Reshma survived, in remarkably good shape, by eating dried food that… Continue Reading
Install Openfiler from USB Rumi, April 24, 2013 The problem we have now is our storage server has no optical drive and we do not have any external optical drive available here in office. Alternatively, we can use USB stick drive and make sure our server are able to boot from USB. Server: DELL PowerEdge R510 OS version:… Continue Reading
Install and Configure Zenoss as Centralized Monitoring System Rumi, April 24, 2013 Good system administrator should know that they need to do these 3 most important things after delivering a server: secure monitor backup As part of monitoring task, in this tutorial, I am going to show on how to build a centralized monitoring system using Zenoss. Zenoss will need to use… Continue Reading
LSyncd Rumi, April 24, 2013 I have a situation where there is one critical website under our company server is critically need to be sync to our backup server. Sync means whatever changes happen in master server, it will replicated to slave server. Yes, you can rsync. But, I do not want to schedule the… Continue Reading
High Availability: Configure Piranha for HTTP, HTTPS and MySQL Rumi, April 24, 2013April 24, 2013 In this post we will complete over the Piranha configuration with HTTP and HTTPS load balancing using direct-routing with firewall marks and MySQL load balancing using direct-routing only. HTTP/HTTPS will need to be accessed by users via virtual public IP 130.44.50.120 while MySQL service will be accessed by web servers… Continue Reading
MySQLDump Shell script for backup Rumi, April 21, 2013 You can use the following script to dump mysql database and can add to crontab entry for daily backup! #!/bin/sh DAY=`/bin/date +%Y%m%d` TFILE="/backup/MYDB.$DAY.gz" mysqldump -u root -p'MYPASSWORD' MYDB | gzip > $TFILE echo "cache dump completed, dump script by rumi (hasan.emdad@mango.com.bd)" Continue Reading
Daily Shell Backup Script Rumi, April 19, 2013 #!/bin/sh DAY=`/bin/date +%Y%m%d` TFILE="/var/log/pdns-cache/$(basename $0).$DAY.csv" rec_control dump-cache $TFILE echo "cache dump completed, dump script by rumi (hasan.emdad@mango.com.bd)" Continue Reading
Manage Multiple MySQL Servers using PHPmyAdmin Rumi, April 19, 2013April 19, 2013 In my environment, I have 5 different MySQL database servers running separately under different geographical location. Since it run standalone and not in cluster mode, I need to have one platform to manage these database servers altogether. PHPmyAdmin is able to do this, with some changes on the configuration files…. Continue Reading
CentOS: Configure Piranha as Load Balancer (Direct Routing Method) Rumi, April 19, 2013 I am currently working on a web cluster project using CentOS. In this project, I have 2 web servers running on Apache and mounted the same document root to serve the HTTP content. I also have 2 servers in front of it to become the load balancer and failover to… Continue Reading
Munin adding up new eth interface Rumi, April 17, 2013 root@pluto:/usr/share/munin/plugins# ./if_ suggest ath0 eth0 –shell munin-node-configure –shell creates symlink commands to link useful plugins from the plugin library to the plugin service directory (usually /etc/munin/plugins). To continue the if_ example: root@pluto:/usr/share/munin/plugins# munin-node-configure –shell ln -s /usr/share/munin/plugins/if_ /etc/munin/plugins/if_ath0 ln -s /usr/share/munin/plugins/if_ /etc/munin/plugins/if_eth0 Continue Reading