configuration

Bookmarks for 24 mag 2013 through 29 mag 2013

These are my links for 24 mag 2013 through 29 mag 2013:

  • DNSViz | A DNS visualization tool – DNSViz is a tool for visualizing the status of a DNS zone. It was designed as a resource for understanding and troubleshooting deployment of the DNS Security Extensions (DNSSEC). It provides a visual analysis of the DNSSEC authentication chain for a domain name and its resolution path in the DNS namespace, and it lists configuration errors detected by the tool.
  • intoDNS: checks DNS and mail servers health – IntoDNS checks the health and configuration and provides DNS report and mail servers report. And provides suggestions to fix and improve them, with references to protocols’ official documentation.
  • Master & Slave PowerDNS – LinuxManage.com – In this short tutorial we will show you how to configure powerdns running as master and slave. For this tutorial purpose, master powerdns host will have ip address 192.168.56.3 and hostname ns1.example.com, slave ip: 192.168.56.4 and hostname: ns2.example.com
  • Sendmail relay configuration on AIX | Leave No Bit Unturned – This document describes how to set up a Sendmail e-mail gateway or relay which will be able to process incoming mail and route it to different mail servers based on domain information. The routing table is based on the Sendmail mailertable feature instead of the usual MX record based routing. This will come handy when there is a need to route mail internally in a different way than externally.

Bookmarks for 6 nov 2012 through 13 nov 2012

These are my links for 6 nov 2012 through 13 nov 2012:

  • Howto: Change the IP address of a Dell 4/P DRAC from the command line without rebooting the server – Normally you configure a Dell Remote Access Card (DRAC) when a server is initially commissioned. Once the card is set, administrators rarely if ever need to modify the settings. If you do need to change the settings, the server needs to be restarted so the DRAC BIOS can be modified, which obviously results in system downtime and requires a physical presence at the server console.
  • bash ini parser | /var/log/ajdiaz – In some situations i like to use INI files as configuration files, as python do. But bash do not provide a parser for these files, obviously you can use a awk code or a couple of sed calls, but if you are bash-priest and do not want to use nothing more, then you can try the following obscure code:
  • Jugg Monkey: VMWare HA Agent had an error – I recently had a problem with one hoste in a 3 node VMWare ESX 3. 5 cluster. For some reason, the HA Agent would not start after I applied outstanding software updates. I kept receiving "VMWare HA Agent had an error" in the alerts after the host came online. I had recently needed to change the IP address of the VMWare 3.5 ESX host, so I figured that was the root cause.

Bookmarks for 25 set 2012 through 26 set 2012

These are my links for 25 set 2012 through 26 set 2012:

  • Magento – Optimizing MySQL for Magento (getting better performance) – General Forum – eCommerce Software for Growth – This is more a tips & tricks post based on our recent experiences on www.shoebacca.com

    (original post 2008, updated until 2010)

  • pfSense – Squid + Squidguard / Traffic Shapping Tutorial | HowtoForge – Linux Howtos and Tutorials – In this tutorial I will show you how to setup pfSense 2.0.1 up as a Internet Gateway with Squid Proxy / Squidguard Filtering. I will also show you have to configure some extra features of pfSense like and traffic shapping with squid. This type of configuration would be useful for people who want to set up wireless hot spots or Internet cafe's etc.
  • Speeding up Magento with APC or Memcached – Tutorials – Magebase – We often hear complaints about how Magento is slow and performs poorly. Developers know, however, that performance is relative and that we can do a number of things to speed up a Magento site. This article will focus on configuring and using APC and/or Memcached. We have a resources section at the end of this article with links to more performance optimization techniques.

    The options obviously also depend on the specific hosting arrangement. I will assume for the purposes of this article, that you have control over your hosting server and are able to install the necessary add-ons and make configuration changes to Apache and PHP. If you are on a shared environment, you may have to check with your hosting support if you can apply the tips from this article. But, you know that you should at least be on a VPS if you are running Magento.

  • Speed up Magento with simple config tweaks – At Ionata we’ve been using Magento for quite a while now and the more sites we added, the slower our server seemed to become. Magento is quite a big chunk of software and can take up a lot of resources. However after doing some research and carefully tweaking our server configurations, we were pretty amazed to find performance gains of several hundred percent only by changing some settings.

    In this post you’ll find a summary of settings that can boost the speed and responsiveness of your Magento installation. Optimisation can be done for PHP, MySQL, Apache and Magento itself.

  • Apache 2 Basic Configuration on Unix-Like Systems | Nettuts+ – The Apache server is a service that runs in the background, waiting for requests from clients connecting to the ports it listens to, in order to take action. Apache either responds to those requests, or leaves related notes in its log files. Its behavior is controlled through its configuration, using what is known as directives (among other things). We’ll discuss the most basic directives in this article.

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 24 lug 2012 from 17:16 to 17:32

These are my links for 24 lug 2012 from 17:16 to 17:32:

  • Five Tips for a Better sendmail Configuration – O’Reilly Media – Unix vendors bundle sendmail with the operating system and ship it out preconfigured. It is very easy to install the OS and use the sendmail configuration delivered with the system. Don't be fooled by this apparent simplicity. In the long run, it is better to take charge of your fate. Creating a custom sendmail configuration using current software and features selected for your environment will give you better performance, reliability, security, and maintainability. Here are some tips to get you started on building a better sendmail configuration.
  • Epoch Converter – Unix Timestamp Converter – Epoch & Unix Timestamp Conversion Tools
  • mylvmbackup – mylvmbackup is a tool for quickly creating backups of a MySQL server's data files. To perform a backup, mylvmbackup obtains a read lock on all tables and flushes all server caches to disk, creates a snapshot of the volume containing the MySQL data directory, and unlocks the tables again. The snapshot process takes only a small amount of time. When it is done, the server can continue normal operations, while the actual file backup proceeds.

Bookmarks for 23 lug 2012 from 15:38 to 17:02

These are my links for 23 lug 2012 from 15:38 to 17:02:

  • Graphvis visualisation of Nagios Config – Nagios Exchange – Graphvis visualisation of complex Nagios configs.
    I have written a couple of utilities one to walk a nagios config tree and turn it into a perl hash (called nagparse)and another to use that hash converting the tree into a graphvis directed graph (called graphit). These are then brought together with a CGI program called explorenagios that lets you select what parts of the config to graph. If you have a non trivial config then showing it ALL in one graph is not fun!

    You can use the two component programs on the command line too – and feed the output into dot (it has been optomised to make nice dot graphs) or one of the other engines like neato if you want to do some hacking of the output options.

    It is now useful enough to be worth sharing. Not prefect yet but useful. Surprisingly fast.

  • Findafont – Find a Font
    Information about how to find a font you're looking for
  • Switching from Red Hat Network to Unbreakable Linux Network (ULN) – This document describes how to connect to the Oracle Unbreakable Linux Network (ULN) to obtain software updates. It outlines the steps needed to switch a server installed with Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 5, Red Hat Enterprise Linux version 4 or Red Hat Enterprise Linux Server version 3, Update 8 or Update 9 from Red Hat Network(RHN) to Unbreakable Linux Network(ULN).

Bookmarks for 24 feb 2012 through 27 feb 2012

These are my links for 24 feb 2012 through 27 feb 2012:

Bookmarks for 23 dic 2010 through 3 gen 2011

These are my links for 23 dic 2010 through 3 gen 2011:

  • How to Survive a Slashdotting on a Small Apache Server – …so your plain ordinary webserver just got listed on a high-traffic news site.  Slashdot?  Reddit?  Hacker News?  Well done, turns out you’re hosting something thousands of people want to read.  Now thousands of people want to come to your webserver at once… […]
  • WordPress, tutto sul file wp-config.php – […] La documentazione ufficiale di WordPress dedica una intera pagina al file wp-config.php. Si tratta del file di configurazione che permette al sito di collegarsi al database. Di regola è sufficiente impostare solamente i parametri per la connessione, le chiavi di sicurezza, il prefisso per le tabelle nel caso di installazioni multiple sullo stesso database, e della localizzazione nella propria lingua, ma è possibile anche impostare altri parametri per personalizzare ulteriormente la propria installazione di WordPress. Vediamo come […] 
  • 500 Internal Server Error – 500 Internal Server Error

Bookmarks for 23 lug 2010 through 27 lug 2010

These are my links for 23 lug 2010 through 27 lug 2010:

  • Mark’s Technical Stuff – This page contains software and documentation written by Mark D. Roth on AIX, sendmail, apache and PAM (a little bit old)
  • Net Profiles – With Net Profiles, mobile computing becomes a whole lot easier. It eliminates the need to manually reconfigure your network settings when you move your desktop/laptop computer to another location. Once a profile is created, Net Profiles can configure your IP settings, proxy settings, mapped drives, default printer, wallpaper, and screen resolution with a click of a button; as well as run any number of user-defined applications upon activation of a profile.<br />
    <br />
    [via http://www.zarrelli.org/blog/ ]
  • HowTo: Fix Corrupted Windows Registry from Ubuntu partition – Ubuntu Forums – I run a dual boot on my work laptop because there are some work related apps that do not run so well <br />
    on my ubuntu partition. Anyhow I ran into the dreaded <br />
    Windows XP could not start because the following file is missing or corrupt: \WINDOWS\SYSTEM32\CONFIG\SYSTEM<br />
    error message. I tried to follow the solution that Microsoft has available on their tech support site, but<br />
    was not able to get to the recovery console, not even through the boot cd!!<br />
    <br />
    <br />
    (rif. http://support.microsoft.com/default.aspx?scid=kb;it;307545 )