Service nginx reload/restart Gives No Output Unlike 14.01. Is not it? This Article Explains Why No Output From Ubuntu 16.04 service start/stop Command. We should not be expecting such output. Earlier Ubuntu versions didn't behave this way because Ubuntu was an upstart system for a decade. In Ubuntu 15.04 and later version, systemd is only fully supported. So, that change from upstart to systemd … [Read more...]
Computer and Internet
Computer and Internet is catchall section of core computing categories including Cloud Computing, Digital Photography, Virtualization, Networking, Protocols and Others' which are not otherwise more subcategorized. Here also you will get unique articles and news on computer hardware, Software, Networking and Protocols.
Nginx WordPress : Redirect to Geographically Closer Server
Often we see many enterprise websites redirect users to country specific subdomain. Here is How To Setup Nginx WordPress to Redirect to Geographically Closer Server. This Setup is Known as Geo Redundant Setup of WordPress. This is only practical if your website has lot of traffic from various regions and you need to decrease load. There are two matters involved - one is setting Nginx as Traffic … [Read more...]
List of Mail Server Software For Installation on Cloud Server/VPS
One person on StackOverflow was asking in confused condition in midway after following a guide of Digital Ocean for self hosting email. Both DigitalOcean and Linode infamously confuse relatively new users with their paid to write guides for the sole intention to sale their virtual servers at abnormally higher price (yes). We think, such person is not alone, there are many such confused users. We … [Read more...]
How To Add IPv6 to IPv4 Server With Nginx Reverse Proxy
IPv6 is not exactly production ready for many reasons. Reasons are many including impossible to remember notation, double issue with security (attack can happen via IPv4 and IPv6), unlisted bad IPv6 used by attackers, hardware like router lack support etc. Out of These Issues, Some Dedicated Server May Not Have IPv6. There are various IPv6 transition mechanisms like tunneling, SIIT (Stateless … [Read more...]
Commands to Detect Type of Virtualization
Previously, we talked about how to detect how to detect whether an instance is running within a Virtualized OS instance or not. Sometime We Need to Know Type of Virtualization Cloud Server or VPS is Using. Here Are Some Commands to Detect Type of Virtualization. Need is sometimes to detect OpenVZ like container based virtualization, which essentially should cost lesser than KVM, Xen … [Read more...]
How Much Smaller Computers Can Go? As It Turns Out, a Lot
We’ve all seen photos from the 1970s of the giant computers that filled an entire room. And usually, those photos are met with astonishment as we look at the computers we use today, from the desktop at work to the Raspberry Pi, just credit card-sized single-board computer. How is it possible that computers have gotten so small, yet so much more powerful — and so much less expensive? … [Read more...]
Global DDoS Attack of Today : To Do List For Public
We talk about DynDNS. Majority of the serious websites use DynDNS including Twitter, Spotify, Github, SoundCloud, The New York Times and so on. We also use Dyn. Today, users reported Internet to be not usable for many websites. This happened as hackers brought a large scale distributed denial of service (DDoS) attack on the servers of Dyn as DNS host. Dyn DNS talked about global DDoS attack of … [Read more...]
Install GoAccess Nginx Access Log Analyzer on Ubuntu 16.04 PHP 7
Previously we talked about configuring GeoIP module for Nginx Access log. This guide can be used on live production server. GoAccess is Easy to Install, Output Available on CLI or As HTML Here is How to Install GoAccess Nginx Access Log Analyzer on Ubuntu 16.04. There are two ways to install GoAccess -- we can install from their repository with aptitude package manager or can build from source … [Read more...]
How To Configure Nginx Access Log With GeoIP (Ubuntu 16.04)
We can virtually use Nginx access log like analytics software. Here is How To Configure Nginx Access Log With GeoIP on Ubuntu 16.04. Usage Commands Also Shown. Access Log is Powerful & Configurable Tool. Many new users sub-utilise this powerful tool of Nginx. Requirements To Proceed To Read This How To Configure Nginx Access Log With GeoIP Guide This guide is written and … [Read more...]
HTTP/2 Roundtrip and Preconnect
Previously we talked about Optimizing Nginx HTTP/2 TLS. W3C defines dns-prefetch, preconnect, prefetch & prerender. In this article we will discussed the practical scenario of HTTP/2 Roundtrip and Preconnect usage. The concept of Preconnect is simple. We often know about resources the browser is likely to need before the browser does. Preconnect involves resolving the DNS name, perform the TCP … [Read more...]
Predictive Big Data Analytics & Medical Diagnosis Automation
In the era of Surgical Science, it is definitely practical to have a second thought from arithmetic calculation of differential diagnoses for fail proof diagnosis exactly in the way augmented reality and/or virtual reality are used to assist an orthopaedic surgeon during execution of some surgeries. Big Data mining to improve medical diagnostics quality is a separate aspect while predictive … [Read more...]