Configuring A High Availability Cluster (Heartbeat) On CentOS Rumi, December 4, 2012 This guide shows how you can set up a two node, high-availability HTTP cluster with heartbeat on CentOS. Both nodes use the Apache web server to serve the same content. Pre-Configuration Requirements Assign hostname node01 to primary node with IP address 172.16.4.80 to eth0. Assign hostname node02 to slave node… Continue Reading
Suse Repository for CAS Rumi, December 4, 2012December 4, 2012 Adding up OSS repository for CAS med and app server- Oss The main repository, open source software only. Version: 12.2http://download.opensuse.org/distribution/12.2/repo/oss/ Version: 12.1http://download.opensuse.org/distribution/12.1/repo/oss/ Version: 11.4http://download.opensuse.org/distribution/11.4/repo/oss/ Version: 11.3http://download.opensuse.org/distribution/11.3/repo/oss/ Version: 11.2http://download.opensuse.org/distribution/11.2/repo/oss/ Version: 11.1http://download.opensuse.org/distribution/11.1/repo/oss/ Version: 11.0http://download.opensuse.org/distribution/11.0/repo/oss/ Continue Reading
Install Webmin on Debian Linux Rumi, November 25, 2012 If you are using the DEB version of webmin, first download the file from the downloads page , or run the command :wget http://prdownloads.sourceforge.net/webadmin/webmin_1.610_all.debthen run the command : dpkg –install webmin_1.610_all.deb The install will be done automatically to /usr/share/webmin, the administration username set toroot and the password to your current… Continue Reading
আমাদের ডাঃ আতিউর রহমান Rumi, November 22, 2012 আমার জন্ম জামালপুর জেলার এক অজপাড়াগাঁয়ে। ১৪ কিলোমিটার দূরের শহরে যেতে হতো পায়ে হেঁটে বা সাইকেলে চড়ে। পুরো গ্রামের মধ্যে একমাত্র মেট্রিক পাস ছিলেন আমার চাচা মফিজউদ্দিন। আমার বাবা একজন অতি দরিদ্র ভূমিহীন কৃষক। আমরা পাঁচ ভাই, তিন বোন। কোনরকমে খেয়ে না খেয়ে দিন কাটতো আমাদের। আমার দাদার আর্থিক অবস্থা… Continue Reading
Using FastCGI with Nginx for Performance on a VM Rumi, November 11, 2012November 11, 2012 This weekend I decided to play around with the configuration on my Rackspace Cloud Server. Since our various websites have been doing well lately, the relatively low-powered machine I am running on is starting to fill up its available RAM. So far so good but as everyone quickly learns –… Continue Reading
PHP accelerator Rumi, November 11, 2012 Even though compilation is very fast, it still has a resource and time cost, especially on high-traffic servers. We can improve our response times by more than 5x by pre-caching our compiled opcode for direct execution later. There are a few PHP accelerators which accomplish this for us: Xcache Xcache… Continue Reading
Install Memcache Rumi, November 11, 2012June 20, 2013 By default PHP loads and saves sessions to disk. Disk storage has a few problems: 1. Slow IO: Reading from disk is one of the most expensive operations an application can perform, aside from reading across a network. 2. Scale: If we add a second server, neither machine will be… Continue Reading
Understanding Linux CPU Load Rumi, November 10, 2012 You might be familiar with Linux load averages already. Load averages are the three numbers shown with the uptime and top commands – they look like this: load average: 0.09, 0.05, 0.01 Most people have an inkling of what the load averages mean: the three numbers represent averages over progressively… Continue Reading
How to distribute root certificates as exe files Rumi, November 1, 2012 We start by creating a folder. We call it cer_as_exe and here we put our root certificate that we want to distribute and a small installation script. Our installation script is not that big. @echo off certutil -addstore -f -enterprise -user root %tmp%\root_ca.cer > NUL del /F %tmp%\root_ca.cer > NUL… Continue Reading
Reset root Password for Redhat/CentOS/Sl Linux 5.x Rumi, November 1, 2012November 1, 2012 You can log in using single-user mode and create a new root password. To enter single-user mode, reboot your computer. If you use the default boot loader, GRUB, you can enter single user mode by performing the following: At the boot loader menu, use the arrow keys to highlight the… Continue Reading