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
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
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
zimbra admin password reset Rumi, October 4, 2012 To reset the administrative password: su – zimbra zmprov sp <admin email address> <new password> To get a list of all administrators: su – zimbra zmprov gaaa To access the admin console: https://YOURHOST:7071 Remember that the administrative console (sometimes) requires a full email address as the login name, so you… Continue Reading
XRDP in OpenSuse 11.0/11.2/11.3 Rumi, September 28, 2012 This tutorial is for advanced users who prefer to skate all the detail that attaches to a "new user" Tutorial. The details (wherein lies the devil) are here: Windows Linux RDP Remote Desktop Connections using openSUSE as Client or Server (terminal server) FWIW there's also an 11.1 version there. Tested… Continue Reading
Zimbra 8 Community edition on Scientific Linux 6 (64 Bit) Rumi, September 15, 2012September 15, 2012 Install SL 6.3 (64 bit) Installing SL6.3 (64bit) with 'minimal' installation mode Post installing, fix with the Static IP Address (Public IP and I assume the system is not behind firewall) Double check with /etc/resolv.conf file parameters Prerequisites for ZImbra installation Let's firsy update- yum update Let's install some pckages… Continue Reading
Install nginx on virtualmin (GPL) server Rumi, August 26, 2012 Installing Nginx Support Switching a system from the Apache webserver (installed by default by Virtualmin to Nginx should only be done if no virtual servers with websites have been created yet. Ideally the change should be done on a freshly installed system, running RHEL 6.0, CentOS 6.0 or Debian 6.0… Continue Reading