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Debian

11 HAProxy for Linux VPS

What is haproxy? HAProxy is a free, very fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. It is particularly suited for web sites crawling under very high loads while needing persistence…

12 How To Repair MySQL Replication

How To Repair MySQL Replication If you have set up MySQL replication, you probably know this problem: sometimes there are invalid MySQL queries which cause the replication to not work anymore. In this short guide I explain how you can repair the replication…

13 How to Secure your VNC by Tunneling over SSH

How to Secure your VNC by Tunneling over SSH In this guide, you will learn how to tunnel your VNC connection over SSH. Now why would we go to the trouble to do this? The answer is simple: VNC traffic is all sent in plain-text and is not secure by its own.…

14 Load Balancing MySQL with MySQL Proxy

Load Balancing MySQL w/ MySQL Proxy We have the technology Install MySQL Proxy on the load balancer box(es). sudo apt-get install mysql-proxy --yes Configure and run MySQL Proxy You'll also need to open the MySQL port on the load balancer boxes. Note that…

15 Memcache

Memcache Overview Memcache is a free & open source, high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Memcached is an in-memory key-value…

16 Migrate E-mail using imapcopy

What is imapcopy? IMAPCopy is a small command line tool to copy messages for multiple users from one imap server to another. It was designed for migration of Linux imap mail to exchange servers. Installation Debian and Ubuntu Install the package via SSH apt-get…

17 Multiple SSL Web Sites On One IP Address With Apache (SNI)

How? Why? What? To have multiple SSL certificates run on a single IP address we need to utilize SNI, Server Name Indication (SNI) is an extension to the SSL and TLS protocols that indicates what hostname the client is attempting to connect to at the start…

18 MySQL Basics

What is MySQL? MySQL is the world's most used open source relational database management system (RDBMS) that runs as a server providing multi-user access to a number of databases. Daily Operations with MySQL Log into MySQL SSH mysql -p This will prompt you…

19 MySQL Optimization, Query Monitoring, and Tuning

MySQL Optimizations Query Monitoring and Tuning MySQL drives most dynamic web content in the modern age of websites WordPress, Joomla, Drupal and most other application utilize the robust features of MySQL. Your VPS will generally come with a 'vanilla' or…

20 PHP Application Clustering with Mod Proxy

What is Clustering Clustering is the technique of linking many computers together to act like a single computer. Generally, a PHP cluster is composed of multiple webservers running PHP individually which then is load-balanced either by a hardware or a software…