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 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 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.
NTP Server Setup: Time synchronization Network Time Protocol (NTP) is a networking protocol for clock synchronisation between computer systems over packet-switched, variable-latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in use. NTP was originally designed by David L. Mills of the University of Delaware, who … Continue reading NTP Server Setup: Time synchronization
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