Amazon Routing and Firewalls
Routing allows traffic in and out of a VPC. An Internet Gateway (IGW) allows two different networks to share traffic. The networks would be your VPC and another VPC or…
Simple explanation of Amazon Virtual Private Cloud (VPC)
A Virtual Private Cloud (VPC) is a logically isolated section of Amazon cloud. You can create your own VPC in AWS cloud. With Amazon VPC, you get full control over…
What is well-architected infrastructure
A well-architected infrastructure is reliable, secure, performant, cost effective, and operationally excellent. In infrastructure, reliability mostly refers to fault tolerance, availability, and durability. A fault tolerant system is able to…
How to empty a MySQL database
Emptying a databases involves dropping (deleting) all its tables. If you have a hundred tables in your database, the task becomes cumbersome. The easiest way to do this is to…
How to find Apache username on my server
The easiest way find the process of an application running on the server is to type the following command: This command would output a list of processes. I can see…
Installing and uninstalling PHP extensions using PECL
PECL is a repository for PHP Extensions. It provide a directory which contains numerous PHP extensions and hosting facilities where these extensions can be downloaded. Using PECL to install extensions:…
Bash: using positional parameter
Positional parameters are used to pass arguments to a command line application. This post shows you how to used positional parameter in bash. On your terminal, type the following command:…
Can I drive on Amazon Route 53
No. Route in Route 53 refers to routing traffic, not an Interstate highway. Amazon Route 53 is a globally distributed Domain Name Service (DNS). DNS is a web service designed…
How traffic is routed and access is controlled in AWS
Routing is the process of directing traffic flow between networks or VPCs. Routing also connects a VPC to the Internet. Routing defines how traffic flows from one network to another.…
AWS Global Infrastructure Explained
AWS global infrastructure is divided into regions. A region is a locations that hosts a collection of AWS data centers. Each region is a completely separate entity. AWS consumers can…