PUBLIC MARKS from camel with tag mysql

CMON is a daemon that aggregates information from MySQL Cluster that earlier was only accessible from the cluster log or the management client, such as: * cluster state * node state * backup statistics * statistics * cluster events (cluster log basically) .. and let's you access the information using SQL, because CMON logs the information into ordinary MYISAM tables! So, it is really easy to use! In the package you also get get php scripts that you can put on your webserver to generate graphs and get a www interface to CMON. CMON can also start ndbd nodes and make decisions on how they should be started (with or without --initial). CMON starts as a daemon and will automatically create cmon database and install the necessary tables automatically.

Server2Go is a Webserver that runs out of the box without any installation and on write protected media. This means that web applications based on Server2Go can be used directly from cdrom, a usb stick or from any folder on a hard disk without the hassle of configuring Apache, PHP or MySQL. Server2Go allows you to create a standalone working web site or PHP application on a CD-ROM. There are many examples of its possible useses such as catalogue software, calculation programmes, image campaigns (CMS-based), computer based training lessons or other applicatons. Most PHP-Software such as the content management system Joomla or the computer based training software Moodle can be used from CD-ROM with the help of Server2Go. Server2Go was developed in the first instance for use on CD-ROM but there is no problem in using it from other drives too. Using a web browser, a user can run php programs as well as view html files on the CD-ROM. He only needs to insert a CD with Server2Go. The server software starts automatically and a browser is opened with the Website of the CD-ROM. Server2Go was built in the first place to replace other CD-ROM webservers such as WampOnCD or Microweb that lacked some important features or are not being actively developed. Main Features * Free! No royalties * Complete WAMPP Server-Stack * Runs directly from CD-ROM, USB Stick or Hard disk without installation * Full featured webserver (based on apache) * PHP 5.x support with many extensions installed (e.g. gd) * Supports SQLite databases * Runs on all versions of Windows from Win 98 and above, MAC OSX support is coming * Support for MySQL 5 Databases * Supports many PHP extensions (GD-Lib, PDO...) by default * Support for Perl 5.8

SugarCRM is a complete CRM system for businesses of all sizes. Core CRM functionality includes sales force automation, marketing campaigns, support cases, project management, calendaring, and more. It supports MySQL and MS SQL Server. Sugar consists of modules, each of which represents a specific functional aspect of CRM such as Accounts,Activities, Leads, and Opportunities. For example, the Accounts module enables you to create and manage customer accounts, and the Activities module enables you to create and manage activities related to accounts, opportunities, etc. These modules are designed to help you manage customer accounts through each step of their lifecycle, starting with generating and qualifying leads to customer support and resolving reported bugs. Because many of these steps are interrelated, each module displays related information. For example, when you view the details of a particular account, the system also displays the related contacts, activities,opportunities, and bugs. You can not only view and edit this information but also create new information. As an administrator, you have the power to implement access control for these modules. You can customize the look and feel of Sugar across your organization. You can even create new modules if needed. You can also create multiple forums as platforms of discussion on various topics amongst your users and customers.

This tutorial explains how you can set up MySQL master-master replication on four MySQL nodes (running on Debian Etch). The difference to a two node master-master replication (which is explained here) is that if you have more than two nodes, the replication goes in a circle, i.e., with four nodes, the replication goes from node1 to node2, from node2 to node3, from node3 to node4, and from node4 to node1. 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 don't 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.

Il y a quelques temps déjà, un nouveau site web pour OBM (www.obm.org) a été mis en ligne, afin de présenter ce logiciel qui permet à ses utilisateurs de stocker, organiser et partager rendez-vous, contacts, courriels, liens, documents et des modules complémentaires de type gestion de projet/planning. Ce fut pour nous une volonté de faire partager ce projet pour lequel la communication n'était pas à son maximum. Depuis nous l'enrichissons afin de partager nos connaissances et de faire de ce Groupware une véritable alternative aux solutions propriétaires. L'un des avantages d'OBM est l'utilisation d'autres logiciels libres pour assurer les différents services d'un goupware (Cyrus, Apache, Postfix...). Cependant, pour les non-initiés, cet avantage se transforme souvent en plusieurs semaines de galère pour réussir à installer un OBM complet. OBM nécessite une certaine expertise dans beaucoup de services associés à OBM (Cyrus, Postfix, MySQL ou PostgreSQL, Java/Tomcat...). Il y a plus de 6 mois, nous avons travaillé avec des développeurs Ubuntu (et nous continuons toujours) pour publier dans Ubuntu Hardy (et maintenant Intrepid) une version packagée d'OBM. Nous nous sommes vite rendu compte qu'inclure un tel logiciel dans une distribution est pour l'instant infaisable. Pouvoir remplacer un fichier de configuration d'un service par celui dont a besoin OBM, n'est pas simplement faisable, voire impossible pour certains services. C'est pour cela que dans Ubuntu il n'y a que la partie "web" qui est pour l'instant intégrée. Nous avons quand même développé tous les autres paquets des services qui gravitent autour d'OBM. Nous espérons intégrer au fur et à mesure tous les paquets d'OBM, quand cela sera possible. Nous sommes donc heureux de vous annoncer la mise en place d'un dépôt Debian (Etch) pour une installation complète et vraiment complète d'OBM. La version disponible est la dernière version stable, la 2.1.11. Il faut souligner que ces paquets sont conçus pour un serveur dédié à OBM. Nous espérerons que grâce à ces paquets vous serez nombreux à installer et utiliser OBM : deb http://deb.obm.org etch obm À vos claviers ! Il est temps d'installer un OBM, en quelques minutes ! Voir ci-dessous pour faire vos retours et tester aussi MiniG, une version alpha d'un nouveau webmail.

MySQLTuner is a script written in Perl that will assist you with your MySQL configuration and make recommendations for increased performance and stability. Within seconds, it will display statistics about your MySQL installation and the areas where it can be improved. It’s key to remember that MySQLTuner is a script which can assist you with your server, but it is not the solution to a badly performing MySQL server. The best performance gains come from a thorough review of the queries sent to the server, and an evaluation of the MySQL server itself. A qualified developer in your application’s programming or scripting language should be able to work with a MySQL database administrator to find improvements for your server. Once the server and application are optimized well, you may need to consider hardware upgrades to the physical server itself. This is a really useful tool for helping to optimize MySQL performance.Understanding the various my.cnf variables and how they affect performance can seem really complicated but this tool takes some of the pain away and makes it easier to understand the effects of each variable.It is especially useful to be able to see the global memory usage, memory usage per thread and the maximum possible memory usage - that is really valuable information that is otherwise complex to calculate.

concrete5 is a building material for websites. Written in PHP, using a MySQL database, and running on your live webserver, c5 makes editing websites a breeze. c5 is easy for site owners to use, flexible for developers to work with, and runs a wide variety of powerful websites.

Quand un site web dynamique commence à avoir un trafic important, généralement on va essayer de multiplier les serveurs web qui hébergent les fichiers. Multiplier les serveurs web n’est pas le plus difficile, il suffit de faire une réplication des données à chaque mise à jour de votre site et de multiplier les sous-domaines. Les choses se compliquent lorsque vous souhaitez avoir plusieurs serveurs de base de données. La base de données que nous étudierons ici est MySQL. Nous ne parlerons pas de cluster MySQL dans cet article. Le but de l’article est de montrer comment séparer un serveur MySQL en trois serveurs distincts : 1 maitre et deux esclaves, avec un seul point d’entrée (le proxy MySQL). Le proxy devra envoyer les requêtes de lecture vers les serveurs esclaves et toutes les autres requêtes vers le serveur d’écriture.

Par défaut, le serveur MySQL est installé avec un login super administrateur “root” et aucun mot de passe. Evidement, vous pouvez en spécifier un, mais que se passe-t-il si vous l’oubliez ? Et bien, pas de panique, on va réparer ce petit souci. Voici donc comment remettre à zéro un mot de passe MySQL.

GreenSQL (or greensql-fw) is a firewall for MySQL databases that filters SQL injection attacks. It works as a reverse proxy, i.e., it takes the SQL queries, checks them, passes them on to the MySQL database and delivers back the result from the MySQL database. It comes with a web interface (called greensql-console) so that you can manage GreenSQL through a web browser. This guide shows how you can install GreenSQL and its web interface on a Debian Etch server.

The configuration described here is not very complicated but still needs to be done carefully. You are expected to have at least basic knowledge of: * MySQL (creating a database, granting access to users, basic SQL queries) * SMTP (what it is and what a basic SMTP dialog looks like) * POP3, IMAP (what they do and what the differences are) * basic Postfix configuration (understand the default settings in your main.cf, have read through the basic configuration document and know that your mail log file is at /var/log/mail.log) * Debian/Linux (general system administration, using a text editor, reading log files)

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

Tout à l’heure, j’ai eu à calculer la position des joueurs d’un jeu en ligne pour faire un classement des 50 meilleurs joueurs en fonction de leur score et du score des autres joueurs. Voici une technique pour y arriver facilement.

Flipper is a tool for managing pairs of MySQL servers replicating to each other (commonly known as master-master replication or dual-master replication). Master-master replication is a great way of ensuring high availability for MySQL databases - it enables one half of the pair to be taken offline for maintenance work while the other half carries on dealing with queries from clients. Flipper achieves this by moving IP addresses based on a role ("read-only", "writable") between the two nodes in the master pair, to ensure that each role is available. Flipper is written in perl, and has been designed to be as portable as possible.

After my last post on limiting bandwidth usage on a Xen node I thought I would follow up with how to monitor the bandwidth usage of a Xen node. I chose to use netacct-mysql to monitor bandwidth and store the results into a mysql database. This isn't the only way of monitoring the bandwidth but it was easy to set up and stores the information directly into mysql without needing any extra scripts. On the Xen setup I'm using for an example there are 3 nodes and a bucket for each node will be created in the mysql database by netacct. Setting up netacct can be tricky so you will want to check to make sure traffic for each node is going into the correct bucket.

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.

This short article explains how you can use a short script to check whether your MySQL master master replication is working as expected or not.

This tutorial is based on Falko Timme's tutorial for MySQL Cluster 5.0. It shows how to configure a MySQL 5.1 cluster with five nodes: 1 x management, 2 x storage nodes and 2 x balancer nodes. This cluster is load-balanced by an Ultra Monkey package which provides heartbeat (for checking if the other node is still alive) and ldirectord (to split up the requests to the nodes of the MySQL cluster). In this document I use Debian Etch 4.0 for all nodes. Therefore the setup might differ a bit for other distributions. The two data nodes were x64 to use all of the 8GB RAM. Servers were compiled from source so you should be able to make it running on any platform. The MySQL version I use in this setup is 5.1.24-rc. It's a release candidate, but I wanted to use 5.1 to take advantage of Memory-Disk Based tables. Beginning with MySQL 5.1.6, it is possible to store the non-indexed columns of NDB tables on disk, rather than in RAM as with previous versions of MySQL Cluster.