- Master-Master Replication With MySQL 5 On Fedora 8
This document describes how to set up master-master replication with MySQL 5 on Fedora 8. Since version 5, MySQL comes with built-in support for master-master replication, solving the problem that can happen with self-generated keys. In former MySQL versions, the problem with master-master replication was that conflicts arose immediately if node A and node B both inserted an auto-incrementing key on the same table. The advantages of master-master replication over the traditional master-slave replication are that you do not have to modify your applications to make write accesses only to the master, and that it is easier to provide high-availability because if the master fails, you still have the other master.
- Modifying PDF Files With PDFedit On Ubuntu Feisty Fawn
This article shows how you can install and use PDFedit on an Ubuntu Feisty Fawn desktop. PDFedit is a free and open-source editor for manipulating PDF documents.
- Monitoring Multiple Systems With munin (Debian Etch)
In this article I will describe how you can monitor multiple systems with munin. munin produces nifty little graphics about nearly every aspect of your server (load average, memory usage, CPU usage, MySQL throughput, eth0 traffic, etc.) without much configuration. I will install the munin client on all systems that are to be monitored (including the munin server itself); the munin clients will then report to the munin server.
- Monitoring Network Latency With Smokeping (Debian Etch)
This guide shows how to install and configure Smokeping on Debian Etch to monitor network latency. From the Smokeping web site: "SmokePing is a deluxe latency measurement tool. It can measure, store and display latency, latency distribution and packet loss. SmokePing uses RRDtool to maintain a longterm data-store and to draw pretty graphs, giving up to the minute information on the state of each network connection."
- Monitoring Network Latency With Smokeping (Ubuntu 9.04)
This guide shows how to install and configure Smokeping on Ubuntu 9.04 to monitor network latency. SmokePing is a deluxe latency measurement tool. It can measure, store and display latency, latency distribution and packet loss. SmokePing uses RRDtool to maintain a longterm data-store and to draw pretty graphs, giving up to the minute information on the state of each network connection.
- Mounting Remote Directories With SSHFS On Debian Squeeze
This tutorial explains how you can mount a directory from a remote server on the local server securely using SSHFS. SSHFS (Secure SHell FileSystem) is a filesystem that serves files/directories securely over SSH, and local users can use them just as if the were local files/directories. On the local computer, the remote share is mounted via FUSE (Filesystem in Userspace). I will use Debian Squeeze for both the local and the remote server.
- Mounting Remote Directories With SSHFS On Ubuntu 11.10
This tutorial explains how you can mount a directory from a remote server on the local server securely using SSHFS. SSHFS (Secure SHell FileSystem) is a filesystem that serves files/directories securely over SSH, and local users can use them just as if the were local files/directories. On the local computer, the remote share is mounted via FUSE (Filesystem in Userspace). I will use Ubuntu 11.10 for both the local and the remote server.
- Multiserver Setup With Dedicated Web, Email, DNS & MySQL Database Servers On Debian Squeeze With ISPConfig 3
This tutorial describes the installation of an ISPConfig 3 multiserver setup with dedicated web, email, database and two DNS servers all managed trough a single ISPConfig 3 control panel. The setup described below uses five servers and can be extended easily to to a higher number of servers by just adding more servers. E.g. if you want to have two mailservers, do the setup steps from chapter 2 on both of these servers. If you want to set up more web servers, then install ISPConfig on all other web servers in expert mode except of the first one.
- Multisite CVS Drupal Installation on Ubuntu
This howto shows you how to do a multi-site Drupal install on Ubuntu. It also covers how to layout your directories for ease of maintenance, and how to ensure that you can update Drupal easily from CVS.
- Network Analysis With Wireshark On Ubuntu 9.10
Wireshark is a network protocol analyzer (or "packet sniffer") that can be used for network analysis, troubleshooting, software development, education, etc. This guide shows how to install and use it on an Ubuntu 9.10 desktop to analyze the traffic on the local network card.
- Network Card Bonding On CentOS
Bonding is the same as port trunking. In the following I will use the word bonding because practically we will bond interfaces as one. Bonding allows you to aggregate multiple ports into a single group, effectively combining the bandwidth into a single connection. Bonding also allows you to create multi-gigabit pipes to transport traffic through the highest traffic areas of your network. For example, you can aggregate three megabits ports into a three-megabits trunk port. That is equivalent with having one interface with three megabytes speed.
- Network Management And Monitoring With Hyperic HQ On Ubuntu 7.04
This document describes how to set up Hyperic HQ on Ubuntu 7.04. The resulting system provides an awesome, web-based "Systems-Management-Software". It is the next stage of classical monitoring and able to manage all kinds of operating systems, web servers, application servers and database servers.
- Network Monitoring Appliance
My ambition was to implement a small (better tiny) appliance for monitoring network health and network resources, short and longtime trends, running under VMware Server or VMware ESX. So I had an eye upon all components which are implemented on the system, to be as leightweight as possible. This was also the reason why no SQL DBMS based software was used. The appliance is based on Ubuntu Jeos LTS (8.04.3 at the time of this writing). Almost all used components are from the related repositories. This tutorial shows how the appliance was implemented.
- Newbie-Friendly Post-Installation Ubuntu Usability Setup Guide
This tutorial is designed for new Linux users that are familiar with Microsoft Windows. The goal is to address some of the most common issues that these people face. (Namely, media codecs, and general terminology.) I tried to write it as someone might explain it vocally; I attempted to add humor in an effort to keep it interesting, although I make no guarantees that it is actually funny.
- Nginx HTTP Server + PHP5 (With fast-cgi And xcache) On Ubuntu Feisty Fawn
This HowTo describes the implementation of Nginx with php5 support (through FastCGI). The fast-cgi process will be initiated via spawn-fcgi. Nginx is a great replacement of Apache with very low memory footprint and contrary to Lighttpd, does not suffer from memory leak over time. You can then use all the memory left to unleash the power of mysql for instance by increasing the default query cache.
- NTFS Disk Recovery
Mary, the daughter of a friend is in college: her Windows XP laptop constantly reboots and, we suspect, has a bad hard drive. The system will boot a live CD (Ubuntu 9.10 Karmic Koala Desktop), and data on the hard drive can be read. During boot, the live CD identifies disk errors and tries unsuccessfully to repair them.
- Open-Source Classroom Management With iTALC On Ubuntu 7.10
This document describes how to set up iTALC on Ubuntu 7.10. iTALC is an open-source classroom management solution that lets you view and control other computers in your network. It lets you remote-control other computers, show the teacher's screen on all students' computers, lock workstations, send text-messages to students, power on/off and reboot remote computers, etc.
- Openfiler 2.3 Active/Passive Cluster (heartbeat,DRBD) With Offsite Replication Node
Openfiler is a Linux based NAS/SAN application which can deliver storage over nfs/smb/iscsi and ftp. It has a web interface over that you can control these services. The cluster we build will consist of two nodes replicating each other and taking over services and storage in case of emergency. Furthermore we have an Offsite Replication Server, which ideally stands in a physically different position and replicates the configurations/storage from which ever node is active. In case of emergency this Offsite Replication Server can be used to restore the cluster and to deliver the services.
- OpenLDAP + Samba Domain Controller On Ubuntu 7.10
This document is a step by step guide for configuring Ubuntu 7.10 as a Samba Domain Controller with an LDAP backend (OpenLDAP). The point is to configure a server that can be comparable, from a central authentication point of view, to a Windows Server 2003 Domain Controller. The end result will be a server with an LDAP directory for storing user, group, and computer accounts. A Windows XP Professional SP2 workstation will be able to join the domain once properly configured.
- Optical Character Recognition With Tesseract OCR On Ubuntu 7.04
This guide describes how to set up Tesseract OCR on Ubuntu 7.04. OCR means "Optical Character Recognition". The resulting system will be able to convert images with embedded text to text files. Tesseract is licensed under the Apache License v2.0.
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