How to generate LA?

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How to generate LA? Sometimes you need to simulate load on your server to check system behavior under heavy load. My case was to check scalability script that monitors backend load and creates new hosts in Digital Ocean. Previously I wrote the article about Load Average and the meaning of this metric. Here you can … Continue reading How to generate LA?

VPN over SSH

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VPN over SSH SSH Tunnel SSH based tunneling VPN-SSH   Since OpenSSH 4.3 tun/tap device can be used to encrypt a tunnel and create VPN over SSH. This is much like other TLS based VPN solutions e.g. OpenVPN. The main advantage to use SSH based tunneling is no need to install and configure additional software. … Continue reading VPN over SSH

Installing Log.io on CentOS

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Installing Log.io on CentOS log.io:   Real-time log monitoring in your browser Powered by node.js + socket.io Log.io uses nodeJS, so first of all we need to install Node JS on a CentOS machine with the dependencies. You should have root or sudo access for it.

PHP-FPM: A simple and robust FastCGI Process Manager for PHP with configuration

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PHP-FPM – FastCGI Process Manager for PHP, configuration and installation     PHP-FPM (FastCGI Process Manager) is an alternative simple and robust PHP FastCGI implementation with some additional features useful for sites of any size, especially for high-load sites. Killing features of PHP-FPM are: Adaptive process spawning Basic statistics (an alternative Apache’s mod_status) Advanced process … Continue reading PHP-FPM: A simple and robust FastCGI Process Manager for PHP with configuration