scalability

Bookmarks for 29 ago 2014 through 1 set 2014

These are my links for 29 ago 2014 through 1 set 2014:

  • Scaling PHP apps via PHP-FPM clustering | Jamie Alquiza – PHP-FPM is a way to move your busted PHP handling from one place to another. It's essentially a pool of processes ready for PHP interpretation through FastCGI. While Apache will service client connections and static content, PHP requests are pushed into PHP-FPM. PHP-FPM allows the creation of process pools, each pool having it's own spawning model (e.g. static number of processes, dynamic with min/max, etc.) and other configurations (what UID/GID to run as, listening socket, etc.). A typical setup would be to create a PHP-FPM pool per tenant in a shared hosting environment.
  • KERMIT – KermIT is an opensource IT management solution. KermIT integrates best of breed opensource components with a Web user interface and dashboard to provide a central management solution for IT systems and applications. It provides a consistent, secure framework and a scalable architecture. It manages Linux, Unix and Windows systems. 'Small picture' KermIT relies in the backend on Puppet and MCollective. The license of the developments is the GPL v.3 for the generic part of the source code.
  • Random Start Times For Cron Jobs With Puppet : mycfg.net – Periodic scripts which use a common resource can end up being configured to run at the same time for multiple hosts. The result is that tasks like puppet runs or backups can take longer since they are trying to run all at once instead of being staggered. One way to do this is to give each cron task unique times manually. Another way is to add a random sleep before the task runs. My preferred way is to use the fqdn_rand function in puppet. Here's how it works.

Bookmarks for 30 lug 2014 through 5 ago 2014

These are my links for 30 lug 2014 through 5 ago 2014:

Bookmarks for 20 ago 2013 from 02:47 to 02:50

These are my links for 20 ago 2013 from 02:47 to 02:50:

  • WordPress › HyperDB « WordPress Plugins – HyperDB is a very advanced database class that replaces a few of the WordPress built-in database functions. The main differences are: * HyperDB can be connect to an arbitrary number of database servers, * HyperDB inspects each query to determine the appropriate database.
  • ClusterFoundry Blog Highly-Available and Load-Balanced WordPress Cluster – Part 1 – This article explains on how to setup a load-balanced WordPress cluster in a master-slave configuration. The load balancer(HAProxy) sits in front of 2 or more web server nodes (1 Master and 1 Slave) which has the same contents. HAProxy does not only distribute requests, but also checks the health of the services running on the node. If one of the nodes are down, all requests will be redirected to the remaining nodes.
  • Deploying Scalable WordPress – The Official Rackspace Blog – […] The end result is a WordPress site that uses Cloud Load Balancers, Cloud Servers, and Cloud Files to deliver an easily scalable, modular configuration.[…]

Bookmarks for 13 ago 2012 from 12:52 to 12:55

These are my links for 13 ago 2012 from 12:52 to 12:55:

  • Baculaconf – Babel Services – What is Baculaconf?
    Baculaconf is a Web interface written in php and that use Web 2.0 technic. This interface is made to set up Bacula, the free backup software.This interface allow to configure one or many Bacula backup platform.
  • Perdition: Mail Retrieval Proxy – Perdition is a POP3, IMAP4 and managesieve proxy server. It is able to handle both plain-text and SSL/TLS encrypted connections, and redirect users to a real-server based on a database lookup. Perdition supports modular based database access. ODBC, MySQL, PostgreSQL, GDBM, POSIX Regular Expression and NIS modules ship with the distribution. The API for modules is open allowing arbitrary modules to be written to allow access to any data store.
    Perdition has many uses. Including, creating large mail systems where an end-user's mailbox may be stored on one of several hosts, integrating different mail systems together, migrating between different email infrastructures, and bridging plain-text and SSL/TLS services. It can also be used as part of a firewall. The use of perditon to scale mail services beyond a single box is discussed in high capacity email.
  • DeleGate Home Page (www.delegate.org) – DeleGate is a multi-purpose application level gateway, or a proxy server which runs on multiple platforms (Unix, Windows, MacOS X and OS/2). DeleGate mediates communication of various protocols (HTTP, FTP, NNTP, SMTP, POP, IMAP, LDAP, Telnet, SOCKS, DNS, etc.), applying cache and conversion for mediated data, controlling access from clients and routing toward servers. It translates protocols between clients and servers, applying SSL(TLS) to arbitrary protocols, converting between IPv4 and IPv6, merging several servers into a single server view with aliasing and filtering. Born as a tiny proxy for Gopher in March 1994, it has steadily grown into a general purpose proxy server. Besides being a proxy, DeleGate can be used as a simple origin server for some protocols (HTTP, FTP and NNTP).

Bookmarks for 19 lug 2010 through 21 lug 2010

These are my links for 19 lug 2010 through 21 lug 2010:

  • portablelinuxapps – PortableLinuxApps provides portable applications for Linux that you can carry around and use on every Linux computer running one of the supported major distributions.<br />
    <br />
    [via http://www.dynamick.it/portablelinuxapps-applicazioni-pronte-alluso-3026.html]
  • phpvirtualbox – A web-based VirtualBox front-end written in PHP – An open source, AJAX implementation of the VirtualBox user interface written in PHP. As a modern web interface, it allows you to access and control remote VirtualBox instances. Much of its verbage and some of its code is based on the (inactive) vboxweb project.<br />
    <br />
    phpVirtualBox was created for people (like me) who prefer not to have to log in to their headless VirtualBox host to administer their virtual machines.<br />
    <br />
    [via http://lifehacker.com/5590935/phpvirtualbox-manages-your-virtual-machines-remotely]
  • OpenStack Open Source Cloud Computing Software – What the software does: The goal of OpenStack is to allow any organization to create and offer cloud computing capabilities using open source software running on standard hardware. OpenStack Compute is software for automatically creating and managing large groups of virtual private servers. OpenStack Storage is software for creating redundant, scalable object storage using clusters of commodity servers to store terabytes or even petabytes of data.<br />
    <br />
    via http://www.ossblog.it/post/6525/la-nasa-e-rackspace-rilasciano-openstack-su-launchpad

Bookmarks for 17 feb 2010 through 18 feb 2010

These are my links for 17 feb 2010 through 18 feb 2010:

  • Puppet is system administration – Automated. – Puppet is a declarative language for expressing system configuration, a client and server for distributing it, and a library for realizing the configuration.
    By saving you countless hours of frustration, monotony, and/or reinventing the wheel, Puppet can change your life. Here are some key points about Puppet:
    Puppet lets you perform normal administrative tasks (such as adding users, installing packages, and updating server configurations) on any number of systems, even if those systems are running completely different operating systems. Through the use of providers, Puppet takes a generic instruction from you (such as ensuring MySQL is installed) and performs the task the "right way" for each system.
    Whether you have a small, heterogeneous network of user workstations or a cluster of rack-mounted number-crunchers, Puppet can help reduce your overhead and get the everyday management of your network under control so you can concentrate on the real problems.
  • Cheapest-Voip: Find the cheapest VoIP provider for the country you want to call – VoIP is offered by many providers, at different rates. The rates differ per country and change frequently. By using the form above, you can find out which provider is the cheapest at this moment, for the country you're trying to reach.

    via http://www.blogvoip.it/

  • tablespace.net – Homepage for William Favorite – tutorial e reference su AIX, linux, Solaris

Bookmarks for 9 feb 2010 through 10 feb 2010

These are my links for 9 feb 2010 through 10 feb 2010:

  • Andrea Tech Blog: HIVE: Extreme Datawarehousing – HIVE è un progetto di Apache Software Foundation, inizialmente sviluppato da Facebook per permettere ai propri analisti di fare elaborazioni su enormi volumi di dati in totale autonomia[…]
    Un post in italiano sulle possibilità di HIVE
  • Hive – Hadoop Wiki – Hive is a data warehouse infrastructure built on top of Hadoop. It provides tools to enable easy data ETL, a mechanism to put structures on the data, and the capability to querying and analysis of large data sets stored in Hadoop files. Hive defines a simple SQL-like query language, called QL, that enables users familiar with SQL to query the data. At the same time, this language also allows programmers who are familiar with the MapReduce fromwork to be able to plug in their custom mappers and reducers to perform more sophisticated analysis that may not be supported by the built-in capabilities of the language.
  • 500 Internal Server Error – 500 Internal Server Error