studiosacchetti.com » linux http://www.studiosacchetti.com Soluzioni informatiche per piccole e medie aziende Thu, 05 Aug 2010 13:43:32 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 how to install a plesk web server on CentOS 5.3 http://www.studiosacchetti.com/2009/how-to-install-a-plesk-web-server-on-centos-5-3/ http://www.studiosacchetti.com/2009/how-to-install-a-plesk-web-server-on-centos-5-3/#comments Wed, 29 Jul 2009 13:16:32 +0000 admin http://www.studiosacchetti.com/?p=301
  • Start the CentOS installer by booting from cd/dvd.
  • For partitioning advice, I followed parallels suggestions
    We cannot give any exact numbers, however, you should take into account the following.Plesk for Linux OSes stores all users’ data in /var partition by default, so the partitioning should be like:
    SWAP → twice RAM size
    /boot → 128 MB
    / → System + Plesk, updates. 5-10 GB should be enough.
    /tmp → 1GB.
    /var → the rest of the space (domains, mail, backups, databases are stored there)

    Directories that usually take much disk space:/var/www/vhosts (/srv/vhosts on SuSE) - domains.
    /var/qmail - mail.
    /var/lib/mysql - Mysql databases.
    /var/lib/psa/dumps - Plesk clients'/domains' backups.
    /var/lib/pgsql/data - Postgres databases.
    /var/tomcat* - Tomcat applications.
    /var/lib/mailman - Mailman lists.

    Please check file /etc/psa/psa.conf for all other directories used by Plesk control panel.
    Plesk Control Panel under FreeBSD uses the /usr/local partition for storing large quantity of data and /var/db partition for databases.
    So the /usr and /var partitions have to be larger in this case.

  • When prompted by the installer, I deselected all installation types.
  • I entered my appropriate network config when prompted. In my case I specifified a static public IP and corresponding gateway and also a couple of know public dns server addresses, although depending on your needs/set-up, you might want/need to be using DHCP.
  • After the installation has completed and you re-boot, upon first log-in you are presented with a network configuration utility; as I’d set my network up previously I didn’t need to do anything with this although there is also a security option which I did alter – by default there is a firewall configured to block most services including HTTP. I chose to switch this off totally at this point as I would be using Plesk to manage the firewall later on.
  • Now I wanted to perform some system updates via Yum, however because CentOS uses bind in a chrooted set-up which doesn’t work well with Plesk, I did the following (after a previous attempt without this knowledge caused me big problems with Bind):
    • Edit /etc/yum.conf and, under the [main] section, add the line
      exclude=bind-chroot
    • Next, get rid of the currently installled bind-chroot package
      # rpm -e bind-chroot
    • Now we can use Yum to provide system updates [Please note, if you plan on using ARTs yum packages, which is a really good idea because you get updated Plesk compatible versions of both PHP and MySQL, do not add this channel to yum just yet, otherwise the Plesk installer won't run until they've been removed!!].
      #yum check-update
      #yum update
  • Now you’re system is up to date, you can go off and get and then run the Plesk auto-installer. To install Parallels Plesk Panel software on a server:
    1. Download the latest version of Parallels Products Installer that suits your operating system from http://www.parallels.com/en/download/plesk9/ and save it on your server’s hard drive.
    2. Change your working directory to the directory where the downloaded Parallels Products Installer is located.
    3. Set the execution permission for Parallels Products Installer:
      # chmod +x parallels_products_installer_file_name
    4. Run the following command in console:
      #export LANG=C
      #export LANG_ALL=C
    5. Run Parallels Products Installer:
      • To install Parallels Plesk Panel through the web interface of Parallels Products Installer, run the following command:
        # ./parallels_products_installer_file_name --web-interface
        Open your browser and enter https://hostname:8447/ or https://IP-address:8447/ in the address bar. The Parallels Product Installer web interface will open. Log in as root.
      • To install Parallels Plesk Panel through the command line interface of Parallels Products Installer, run the following command:
        # ./parallels_products_installer_file_name
    6. Follow the instructions presented on the screen to complete the installation. Refer to Parallels Plesk Panel Installation Guide available at http://download1.parallels.com/Plesk/Plesk9.2/Doc/en-US/plesk-9.2-unix-installation-guide/index.htm if you need detailed installation instructions.
    7. When the installation is finished, Parallels Plesk Panel will start automatically.
    • ]]>     http://www.studiosacchetti.com/2009/how-to-install-a-plesk-web-server-on-centos-5-3/feed/ 0     Hosting http://www.studiosacchetti.com/2009/hosting/ http://www.studiosacchetti.com/2009/hosting/#comments Wed, 11 Feb 2009 21:55:19 +0000 admin http://www.studiosacchetti.com/?p=23 hostingIn ambito informatico si definisce hosting (dall’inglese to host, ospitare) un servizio che consiste nell’allocare su un server web li pagine di un sito web, rendendolo cosí accessibile dalla rete Internet. Tale “server web”, definito “host”, è connesso alla rete Internet in modalità idonea a garantire l’accesso alle pagine del sito mediante browser, con identificazione dei contenuti tramite dominio ed indirizzo IP.
    La fornitura di servizi di connessione ad Internet, hosting, housing, e servizi connessi, è oggi un settore economico molto specifico in cui operano molte realtà nazionali, ma anche grandi imprese transnazionali.

    Esiste un grande ventaglio di offerte, in funzione dell’uso che si vuole fare del sito web.

    Un servizio tipico, per un sito statico, può tra l’altro comprendere:

    • Registrazione o trasferimento di un nome di dominio
    • Da tre a 10 indirizzi di posta elettronica, con eventuali alias
    • Filtri antispam ed antivirus
    • Un determinato quantitativo di spazio web
    • Gli strumenti adatti alla gestione delle pagine, quali file manager, prototipi, ftp, contatori di accesso, ecc.
    • Una quantità di banda mensile per il traffico generato dal sito adeguata

    per un sito dinamico può comprendere, oltre a quanto già citato:

    • Il supporto ad uno o più linguaggi di scripting, come ad esempio PHP, Python, o ASP
    • il supporto ad un database on line, come ad esempio MySql o Postgres
    • servizi di statistiche e analisi del traffico, come ad esempio il software libero webalizer
    ]]>     http://www.studiosacchetti.com/2009/hosting/feed/ 0     Open Source http://www.studiosacchetti.com/2009/open-source/ http://www.studiosacchetti.com/2009/open-source/#comments Wed, 11 Feb 2009 21:48:10 +0000 admin http://www.studiosacchetti.com/?p=18 opensourceIn informatica, open source (termine inglese che significa sorgente aperto) indica un software rilasciato con un tipo di licenza per la quale il codice sorgente è lasciato alla disponibilità di eventuali sviluppatori, in modo che con la collaborazione (in genere libera e spontanea) il prodotto finale possa raggiungere una complessità maggiore di quanto potrebbe ottenere un singolo gruppo di programmazione.

    L’open source ha ovviamente tratto grande beneficio da Internet. Alla filosofia del movimento Open Source si ispira il movimento Open content: in questo caso ad essere liberamente disponibile non è il codice sorgente di un programma ma contenuti editoriali quali testi, immagini, video e musica.

    Attualmente l’Open Source tende ad assumere rilievo filosofico, consistendo in una nuova concezione della vita, aperta e refrattaria ad ogni oscurantismo, che l’Open Source si propone di superare mediante la condivisione della conoscenza.

    leggi tutto su wikipedia

    ]]>     http://www.studiosacchetti.com/2009/open-source/feed/ 0