Learning Guide Computer

Beware of “Verify Your TM Account” Email Phishing Scam

Youzhny — Thu, 17 May 2012 10:03:53 +0000

MALAYSIA – This is a public service announcement. I received an email from Telekom Malaysia Berhad (TM) asking help to spread the word about a recent email phishing scam that asks TM customers for their user account information. The email claims to be from TM with subject titles such as “Verify Your TM Account” and threaten to shut down the user’s account if their account details are not “verified”.

Coding the Digg v4 Layout with HTML5 and CSS3

Youzhny — Thu, 17 May 2012 09:54:26 +0000

The social news community Digg has been online since 2004 and rapidly grew in popularity leading up to the 2008 elections. Come 2011 the Digg team performed an overhaul on the system and completely revamped the site layout. This also broke the friends system, allowing big-name publishers to game the front page

How to split Varnish log for Virtual host

Youzhny — Thu, 17 May 2012 09:50:48 +0000

Varnish is a great tool that accelerates the performance of your site with a simple configuration and a low usage of resources, compared to the result you’ll get. Just because Varnish is designed and engineered to be fast by default it does not write any log to disk, outrageous you could think … to be honest the logs are available in a memory segment when this memory is filled, Varnish starts from the beginning and overwrites the oldest data in an infinite loop. So in reality there are logs and they are available for some time, and this solution is much, much faster then logging to a file and it doesn’t require disk space, but how we can get them on file, possibly divided by virtual host as do Apache or Nginx ?

CentOS / Redhat: Setup NFS v4.0 File Server

Youzhny — Tue, 03 Apr 2012 11:17:22 +0000

How do I setup NFS v4.0 distributed file system access server under CentOS / RHEL v5.x for sharing files with UNIX and Linux workstations? How to export a directory with NFSv4? How to mount a directory with NFSv4? Network File System (NFS) is a network file system protocol originally developed by Sun Microsystems. It allows [...]

device eth1 does not seem to be present, delaying initialization

Youzhny — Tue, 03 Apr 2012 11:14:08 +0000

So here I am, looking at two identical machines with identical OS installation and configuration etc., all appearing fine with other installations/configurations I’m working on, when I ended up doing a network device check running ifconfig and then wondering, why does machine-A have eth0 and eth1, but machine-B is missing eth-1? Ran # [...]

MySql – Create read-only user

Youzhny — Wed, 21 Mar 2012 07:50:22 +0000

Most useful for second or third level support people where people have skills to check db directly but in case you do not want them to make changes, Read only user can be created for them in Mysql DB. Here are two simple steps: 1. Create user 1 mysql> create user [...]

Monitoring Windows Server 2008 R2 with SNMP

Youzhny — Thu, 15 Mar 2012 03:16:45 +0000

So you have a new Windows Server 2008 R2 installed and now you’d like to start gathering statistics about how it’s performing. The SNMP protocol is a great way to get started. In this tutorial I will install the SNMP agent service on a Windows server and configure it to allow queries from a SNMP [...]

Installing ClamAV on CentOS

Youzhny — Tue, 13 Mar 2012 06:08:17 +0000

Installing Clamav antivirus software on your linux centos server is quite easy. The best way to do this is using yum to look for the ClamAV packages in Dag’s repositories. Adding the Dag’s repositories on your server. 1.) Connect to the server with root login and password. 2.) Type in the command cd /etc/yum.repos.d [...]

Common Useful MySQL Commands

Youzhny — Thu, 08 Mar 2012 10:30:44 +0000

Basic description of what will be done and what is expected. Database file locations: In Centos 5.x the location where the raw uncompressed MySQL databases are stored is: /var/lib/mysql Users and DBA’s (Database Admins) create, delete, manipulate: Note: To create, delete or alter a DBA you'll first need to be logged in as [...]

Sendmail smtp relay gmail google apps

Youzhny — Thu, 16 Feb 2012 00:29:52 +0000

Configure sendmail to use gmail/google apps as the external smtp server and have it authenticate properly. yum install sendmail sendmail-cf then followed these instructions $cd /etc/mail $hostname -f > genericsdomain $touch genericstable $makemap -r hash genericstable.db < genericstable $mv sendmail.mc sendmail.mc.original $wget http://pbxinaflash.net/source/sendmail/sendmail.mc.gmail # If the above file is no longer available I've uploaded a [...]