PUBLIC MARKS with tags linux & server

Here are some of the best Linux server distros available for system administrators and experienced users.

dmesg | grep "TCP bind hash table"

Puppet, Chef, cfengine, and Bcfg2 are all players in the configuration management space. If you’re looking for Linux automation solutions, or server configuration management tools, the two technologies you’re most likely to come across are Puppet and Opscode Chef. They are broadly similar in architecture and solve the same kinds of problems. Puppet, from Reductive Labs, has been around longer, and has a large user base. Chef, from Opscode, has learned some of the lessons from Puppet’s development, and has a high-profile client: EngineYard.

Mettre à jour son Ubuntu serveur vers la version 10.04

Actually usually any web server can handle a normal day of work, but what happens when the server under your administration gets, stumbled, or appears in Slashdot, or digg front pages, now a days even twitter may drive a lot of traffic to a webpage.

Monitorix is a free, open source, lightweight system monitoring tool designed to monitorize as many services as possible. At this time it monitors from the CPU load and temperatures to the users using the system. Network devices activity, network services demand and even the devices' interrupt activity are also monitored, and more. The current status of any corporate server with Monitorix installed can be accessed via a web browser.

Synergy lets you easily share a single mouse and keyboard between multiple computers with different operating systems, each with its own display, without special hardware. It's intended for users with multiple computers on their desk since each system uses its own monitor(s).

This site will hope to provide both content and community for those who are interested in Ubuntu on the server. Ubuntu, more often than not, is viewed as a newby distribution for desktop use. Even though Ubuntu makes a great desktop, it also makes a great robust server as well and this site hopes to focus on that. The framework of the site is still being developed so bare with me here a bit, but enjoy!

SystemImager lets you create images of your Linux installations. To do so, you need an image server (should have enough disk space to store your images) and a so-called golden client (i.e., the system of which you want to make an image). This means that you have to install some software on your image server and on your golden client in order to run SystemImager. This tutorial shows how to install a SystemImager server and a SystemImager client, both using Ubuntu 8.10, and how to create/update/restore/delete images.

his document is derived from Christoph Haas’ tutorial “Howto: ISP-style Email Server with Debian-Etch and Postfix” (http://workaround.org) and Falko Timme’s tutorial “Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 8.04 LTS)” (http://www.howtoforge.com). The associated Mailfix Drupal module must be installed as part of this tutorial. It will guide you through the necessary steps to configure a Drupal driven Mail server. Provided features: * Drupal managed email accounts * Support for virtual domains * Automatic forwarding * Postfix quota support * Silent BCC monitoring * Other features: anti-spam, anti-virus

Many times, you want to execute a command not only on one server, but also on several servers. For example, find out * Version of kernel * Version of Apache web server * Update static html or images files on all web servers via rsync * Find out user information, server information, memory usage etc * Security/patch checking tentakel I have already covered how to execute commands on multiple Linux or UNIX servers via shell script. The disadvantage of script is commands do not run in parallel on all servers. However, several tools exist to automate this procedure in parallel. With the help of tool called tentakel, you run distributed command execution. It is a program for executing the same command on many hosts in parallel using ssh (it supports other methods too). Main advantage is you can create several sets of servers according requirements. For example webserver group, mail server group, home servers group etc. The command is executed in parallel on all servers in this group (time saving). By default, every result is printed to stdout (screen). The output format can be defined for each group.

This guide explains how you can run virtual machines with Sun xVM VirtualBox 2.0 on a headless Ubuntu 8.04 server. Normally you use the VirtualBox GUI to manage your virtual machines, but a server does not have a desktop environment. Fortunately, VirtualBox comes with a tool called VBoxHeadless that allows you to connect to the virtual machines over a remote desktop connection, so there's no need for the VirtualBox GUI.

This howto explains installing Zivios Master Service version 0.5.0. Zivios is an n-tiered PHP-5 application, providing identity management, single sign-on, user, group and computer provisioning, as well as remote management of services. It uses MySQL and OpenLDAP as it's data store, with OpenLdap being the primary back end for identity management and application integration and MySQL being used for panel specific data.