Amazon Redshift is a fully managed, petabyte-scale data warehouse service in the cloud. A data warehouse architecture consists of three tiers. The bottom tier of the architecture is the database server, where data is loaded and stored. The middle tier consists of the analytics engine that is used to access and analyze the data. The top tier is the front-end client that presents results through reporting, analysis, and data mining tools.
AWS Lambda is a serverless computing service that allows developers to run code without provisioning or managing servers. One of the biggest advantages of AWS Lambda is its pay-as-you-go pricing model. You are charged only for the compute time your code actually consumes. When your code is not running, you are not billed, making it a cost-effective solution for many modern applications. Instead of maintaining infrastructure, you simply upload your code. AWS then handles running, scaling, and managing the execution environment. AWS Lambda is well suited for a wide range …
Cassandra is a distributed database management system designed for handling a high volume of structured data across commodity servers. It provides high availability with no single point of failure. Important points Apache Cassandra is an open-source, distributed and decentralized/distributed storage system. It is a column-oriented database. Cassandra was developed at Facebook for an inbox search.
The cPanel new version v66 introduces a new feature that facilitates users to remotely store their data and access it from any part of the world. This is established using the Google Drive feature that enables users to configure server backup directly to this cloud storage. You can save up to 15GB server space by using this feature. Let’s take a quick look at a brief overview on setting this up in cPanel. Set up your Google Drive account with cPanel server account backups The first step is to enable the …
Apache Struts 2 is an open-source framework widely used for developing Java web applications. On March 6, 2017, a critical security vulnerability identified as CVE-2017-5638 was publicly disclosed. This flaw allowed attackers to execute remote code on vulnerable servers by sending specially crafted malicious requests. The vulnerability occurs when a server processes file uploads using a Jakarta-based multipart parser. Attackers can exploit this weakness by embedding malicious commands within the Content-Type header of a file upload request. When processed by affected versions of Apache Struts 2, the server may execute …
HAProxy stands for High Availability Proxy. It is a very fast and reliable solution for high availability and load balancing. HAProxy is used as TCP/HTTP Load Balancer and for proxy Solutions. The HAProxy application will share the workload with multiple servers. Steps for Installation and Configuring HAProxy =========== Step 1: Before proceeding with the installation of HAProxy in the server, we need to install the epel repository on our system depending on the operating system version using the following command.
Cloud computing has transformed how businesses deploy and manage infrastructure. Instead of maintaining physical servers, organizations now rely on scalable cloud platforms that can dynamically allocate resources as demand changes. One of the most powerful open-source solutions enabling this transformation is OpenStack. What is OpenStack? OpenStack is an open-source cloud computing platform used to build and manage public and private clouds. It primarily delivers Infrastructure-as-a-Service (IaaS) capabilities, allowing organizations to: With OpenStack, administrators can spin up or shut down instances on demand, making it ideal for environments that require flexibility, …
A serious vulnerability named Dirty COW has been discovered recently which has put the Linux kernel under risk. It is said that this vulnerability was noticed nine years ago (since version 2.6.22 in 2007) and remained unnoticed throughout this time. A researcher named Phil Oester was the man behind the detection of this serious threat. According to him, the vulnerability is described as a race condition where the Linux kernel’s memory subsystem handles the copy-on-write (COW) breakage of private read-only memory mappings. In this way, the attackers gain write access to …
A “Smart Host” (also known as a relay host) is a type of mail relay server which allows an SMTP server to route e-mail to an intermediate mail server rather than directly to the recipient’s server. This improves the performance of your server and the reliability of your e-mail delivery. Exim Server (Forwarding Server) This server will be forwarding all emails to the SmartHost for relay for final delivery. If you are not using cPanel / WHM, then you will simply edit ‘/etc/exim.conf’ instead of using cPanel / WHM’s interface. …
CloudLinux is one of the widely used Operating System nowadays due to the high-level stability and advanced server security it provides, which makes it the first preference for hosting providers, especially in a shared hosting environment. LVE (Lightweight Virtual Environment) is a kernel-level technology developed by the CloudLinux team. It is lightweight and transparent. The goal of LVE is to make sure that no single website can bring down your web server. The kernel makes sure that all LVEs get a fair share of the server’s resources, and that no …
