HA

Bookmarks for 16 gen 2013 through 17 gen 2013

These are my links for 16 gen 2013 through 17 gen 2013:

  • Graylog2 – Free open source self-hosted log management and exception tracking – Simple log management
    Graylog2 enables you to unleash the power that lays inside your logs. Use it to run analytics, alerting, monitoring and powerful searches over your whole log base. Need to debug a failing request? Just run a quick filter search to find it and see what errors it produced. Want to see all messages a certain API consumer is consuming in real time? Create streams for every consumer and have them always only one click away.

    Free and open source
    Graylog2 is free and open source. It is licensed under the GNU General Public License v3 (GPLv3) and all source code can be browsed on GitHub. The web interface is using Ruby On Rails, the server is written in Java.

    Used by professionals
    The first version of Graylog2 was released in July 2010. Since then there has been rapid and continuous development and a number of major releases.

  • Centralizzare i log mediante Elasticsearch, Logstash e Kibana – Mia mamma usa Linux! – Uno dei principali problemi che si rilevano in fase di debug delle anomalie relative ad applicazioni è la frammentazione delle informazioni. Tanti log, buona parte dei quali inutili, sono sparsi ovunque nelle macchine interessate all’erogazione di questo o quel servizio.
    Tipicamente quando si tratta di servizi ripartiti su più macchine è sempre necessario aprire diverse console all’interno delle quali, per ciascuna macchina, il (o i) file di log vengono aperti, filtrati stampati e via così, sino ad ottenere una situazione degna di Sherlock Holmes, in cui solo consumati ed abili detective riescono a trovare l’indizio che sfugge ai più.

    Esiste però una via migliore per gestire enormi quantità di log in una forma centralizzata, facilmente ricercabile e che usi un’interfaccia gradevole. Si tratta della combinazione di tre software: Elasticsearch, Logstash e Kibana.

  • Seminario “Evoluzione della virtualizzazione su Linux”: video uno e due – “Introduzione” e “Virtualizzazione” – Mia mamma usa Linux! – Nella giornata del 29 giugno 2012, presso l’hotel Holiday Inn di Rho si è svolto il secondo seminario di miamammausalinux.org, intitolato quest’anno “Evoluzione della virtualizzazione su Linux“.

    Viste le numerose richieste ricevute e rispettando sempre la filosofia alla base del progetto miamammausalinux.org, il video del seminario viene proposto integralmente nelle sue parti, insieme alla documentazione fornita ai partecipanti.

    Ecco le prime due parti.

Bookmarks for 25 lug 2011 from 06:00 to 14:57

These are my links for 25 lug 2011 from 06:00 to 14:57:

Bookmarks for 11 lug 2011 through 12 lug 2011

These are my links for 11 lug 2011 through 12 lug 2011:

Bookmarks for 7 lug 2011 from 13:54 to 14:25

These are my links for 7 lug 2011 from 13:54 to 14:25:

  • 50+ Killer Apps for Your New Chromebook | Nettuts+ – In celebration of the first wave of Chromebooks being released today, now is a great time to start looking for replacements for the tools you can’t live without on a day to day basis. Code editors, image editors, games? All of these can be replaced! I’ll show you the best choices today.
  • Howto: Debian Squeeze+Nginx+WordPress – Nginx è uno tra i webserver open source che si sta diffondendo di più tra i sistemisti che ricerchino performance elevate e un consumo di risorse inferiore rispetto ad Apache (ma anche ad alternative “minimaliste” con Lighttpd).
  • Migrating data – Summary:  Migrating or copying data is a frequent task that system administrators carry out often. There are various tools available for these tasks, including cp, tar, and cplv.
  • Techdocs: Migrating Users from One AIX System to Another AIX System – This document discusses migrating users from one AIX system to another. This does not include transferring the user's personal data or home directories.<br />
    The information in this document applies to AIX 5.2 and above.<br />
    Since the files involved in the following procedure are flat ASCII files and their format has not changed from V4 to V5, the users can be migrated between systems running the same or different versions of AIX (for example, from V4 to V5).
  • Techdocs: hacmp tutorial –

Bookmarks for 3 giu 2011 through 5 giu 2011

These are my links for 3 giu 2011 through 5 giu 2011:

  • 500 Internal Server Error – 500 Internal Server Error
  • 500 Internal Server Error – 500 Internal Server Error
  • Creating a low cost, high performance ESX cluster | SPK and Associates – As Senior Systems Integrator for SPK and Associates, a California based IT services company specializing in infrastructure management services, I recently completed an interesting project.  The goal was to create an ESX cluster for a small engineering group (about 40 users).  The cluster would be used for a wide variety of applications — software repositories, QA testing of linux appliances, databases, and potentially others as well.  Other than a gigabit network switch and some PDUs, there was no existing infrastructure in place that I could leverage.<br />
    <br />
    For under $18k in hardware, and $7k in VMWare licensing, we were able to build a 2-node VCenter cluster with full HA support.  I expect this to be able to handle upwards of 60 virtual machines, based on typical usage.

Bookmarks for 28 feb 2011 through 3 mar 2011

These are my links for 28 feb 2011 through 3 mar 2011:

  • Installing Oracle11 on Debian – The main goal is to get the Oracle installer to run so you can install Oracle successfully. This application has to run within X windows. We will use vnc for that, this is not necessary, but you may (often) find you have to install Oracle remotely. And using something like vnc sure beats spending time in a noisy server room[…]
  • 500 Internal Server Error – 500 Internal Server Error
  • Openfiler 2.3 Active/Passive Cluster (heartbeat,DRBD) With … – […] 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 howto is based on the Howto from Kyle Gililland. A lot of thanks to him for this.<br />
    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 […]

Bookmarks for 25 gen 2010 from 15:08 to 18:02

These are my links for 25 gen 2010 from 15:08 to 18:02:

  • How to build a Social Networking Website with Drupal – woorkup.com – With this article I want to explain how you can plan and build a Social Networking Website using Drupal. The intent of the post is to provide useful tips and informations to understand the issues behind the building of a working on-line community. This writing was inspired by the reading of two interesting books, Community Building on the Web: Secret Strategies for Succesfull On-line Community and Drupal 6 – Social Networking. It’s clear that in a post I can provide only some useful cues to make a well-done work. I suggest to read the books above mentioned if you want to know more about the techniques and best practices for developing a good web network service.
  • Teambox | Project collaboration – Collaboration just got better
    A place for your team in Twitter-like project collaboration tool.

    Share tasks, messages, files. Get notified by email. Real group collaboration for your projects!

    Via http://www.fogliata.net

    […] Per ogni progetto sono disponibili un’area per le conversazioni, una per i vari compiti assegnati, una per le pagine ed un’altra per i file caricati dagli utenti. Teambox permette di fare più o meno le stesse cose possibili con Basecamp, con il vantaggio però di essere un sistema gratuito ed open source che potete persino installare sul vostro server[…]

  • The Heartbeat User’s Guide – The definitive reference guide for users of the Heartbeat cluster messaging layer.