tips

Bookmarks for 2 nov 2012 from 15:23 to 18:09

These are my links for 2 nov 2012 from 15:23 to 18:09:

  • USEFUL ONE-LINE SCRIPTS FOR SED – (Unix stream editor) Dec. 29, 2005
    Compiled by Eric Pement – pemente[at]northpark[dot]edu version 5.5
  • IBM devscan tool – United States – The devscan tool is a supplemental tool used by AIX support personnel to gather debugging data for Storage Area Networks. The package download includes a manual page that is also available on this site at the Usage tab.
  • mysqlreport :: Make easy-to-read MySQL status reports – mysqlreport makes a friendly report of important MySQL status values. mysqlreport transforms the values from SHOW STATUS into an easy-to-read report that provides an in-depth understanding of how well MySQL is running. mysqlreport is a better alternative (and practically the only alternative) to manually interpreting SHOW STATUS.
  • Percona Online Tools – Welcome to Percona's suite of productivity tools for MySQL database administrators and developers. One free account lets you access all of the tools below, and keeps you updated when new tools or enhancements are available. Registration is required.

    Optimize your MySQL Server:
    Leverage our expertise to create a good starting configuration for a MySQL server.
    This tool will walk you through all of the steps necessary to create a ready to use MySQL configuration file in about 5 minutes.

    Analyze an SQL Query:
    Find out when your SQL is potentially buggy, hard for MySQL to optimize, or confusing.
    This tool will analyze your SQL code and warn you when it detects problems that we've encountered while optimizing thousands of queries in real applications.

Bookmarks for 22 ott 2012 through 23 ott 2012

These are my links for 22 ott 2012 through 23 ott 2012:

  • Can’t SSH into ASA? « Axelilly’s Ponderings – Something strange happened today when I went to SSH into my ASA cluster.

    Upon running ssh I got this error message:

    ssh_exchange_identification: Connection closed by remote host

  • Ubuntu Linux Resources – It's a collection of tutorials designed to help new Ubuntu users, in particular those coming from a Windows-using background.
  • PsPasswd – Systems administrators that manage local administrative accounts on multiple computers regularly need to change the account password as part of standard security practices. PsPasswd is a tool that lets you change an account password on the local or remote systems, enabling administrators to create batch files that run PsPasswd against the computers they manage in order to perform a mass change of the administrator password.

    PsPasswd uses Windows password reset APIs, so does not send passwords over the network in the clear.

Bookmarks for 9 ott 2012 from 10:37 to 20:19

These are my links for 9 ott 2012 from 10:37 to 20:19:

  • notepadqq/notepadqq · GitHub – Linux clone of notepad++
  • Top 10 things you must read about vSphere 5.1 – Welcome to vSphere-land! – There has been so many documents, white papers, videos and blog posts posted about the vSphere 5.1 release that it’s hard to keep up with them all. I have at least 250 links gathered in my vSphere 5.1 Link-o-rama and it is still growing. With so many links it’s easy to miss some of the really good ones so I thought I would put together a top 10 list that highlights the ones that you don’t want to miss.
  • Three things you should never put in your database | Revolution Systems – As I've said in a few talks, the best way to improve your systems is by first not doing "dumb things". I don't mean you or your development staff is "dumb", it's easy to overlook the implications of these types of decisions and not realize how bad they are for maintainability let alone scaling. As a consultant I see this stuff all of the time and I have yet to ever see it work out well for anyone.

Bookmarks for 31 lug 2012 through 2 ago 2012

These are my links for 31 lug 2012 through 2 ago 2012:

  • Magento optimization Howto – Welcome to this Magento hardcore performance howto, I hope it will be useful.
  • Nginx+PHP(FPM)+MySQL+Memcache+eAccelerator on Debian6 | Qi Yang – I recently rebuild my linux image on Linode, so I have to reinstall the LEMP stack again from ground. Last time was probably more than a year ago, with the help of many tutorials from google. So this time I decide to write what I did step by step for my reference in the future […]
  • Magento caching, APC, eAccelerator Memcached, files, sqlite, Vanish, what’s the … happen? | Alex Paradise – Magento is slow! It’s how start most of the article about Magento cache optimization. Yes, Magento is slow and this because of the way the code is written, extreme object oriented. Stackoverflow say “It is written in an Enterprise Java idiom” and there are right. Anyway, we can’t change anything about it and in one side that let us lot of flexibility.
    So, Magento IS SLOW! And what’s can we do? There is many thing to do, many, many. But the most important one is to work around the cache. I am searching for a cache solution and found so much different stuff like APC, eAccelerator, memcached, tmpfs, varnich, lighthttpd, nginx and so on… I will try to explain the different possibilities if found while my research and finished by the one I will implement[…]
  • Do you have any tips for making WorldClient run faster? – Question:

    Do you have any tips for making WorldClient run faster?

  • MySQL-Galera cluster with HAproxy – Sébastien han – When I started working on Open Stack, I had to investigate about the HA of the nova component. Unfortunatly the nova configuration needed a single entry point to connect to the MySQL database. The solution that came to me was to use HAProxy on top of my existing Galera cluster…

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 26 mag 2012 through 28 mag 2012

These are my links for 26 mag 2012 through 28 mag 2012:

  • gitso – Gitso is to support others. – Google Project Hosting – Gitso is a frontend to reverse VNC connections. It is meant to be a simple two-step process that connects one person to another's screen. First, the support person offers to give support. Second, the person who needs help connects and has their screen remotely visible. Because Gitso is cross-platform (Linux, OS X and Windows) and uses a reverse VNC connection, it greatly simplifies the process of getting support.
  • Everything Sysadmin: a list of dumb things to check – When you are debugging a problem for hours and hours, you suddenly realize, "I bet it's something really dumb!" It often is. Therefore, we present… a list of dumb things to check
  • Infographics and charts – interactive data visualization | Infogr.am – Infogr.am is a super-simple tool for data visualization – creation of interactive infographics and charts

    via http://www.downloadblog.it/post/17741/infogram-dalla-lettonia-un-nuovo-strumento-per-la-creazione-di-infografiche

Bookmarks for 5 gen 2012 through 25 gen 2012

These are my links for 5 gen 2012 through 25 gen 2012:

  • MySQL permissions for backup | OpenConcept Mobile Site – It's a really good idea to use a least-privilege approach to most system administration tasks, and especially automated ones. This post describes using a "read only" MySQL user to handle backing up MySQL databases.

    We use mysqldump to backup our databases on a regular basis, using scripts like this one

  • MuckNet » Blog Archive » MySQL Permissions for backup using mysqldump and/or ec2-consistent-snapshot – Using root for your MySQL backups is a bad idea boys and girls. You should dedicate a user to doing your backups. Below are a few options for setting up minimum permissions for your dedicated mysql backup user

    [memento mori]

  • Tiki Wiki CMS Groupware | Tiki Wiki CMS Groupware – Software made the wiki way. – What is Tiki Wiki CMS Groupware? Tiki is a powerful, web-based application, created by a large team of contributors. Tiki is the ideal tool for you to build and maintain your Website/Wiki/Groupware/CMS/Forum/Blog/Bug Tracker or any other project you can imagine running in your browser window.

    Tiki is free, both Free Software (as in "Free Speech") and Free of Charge (as in "Free Beer"), and for everyone! It has all the features you need "out-of-the-box":
    Wikis (like Wikipedia)
    Forums (like phpBB)
    Blogs (like WordPress)
    Articles (like Yahoo News)
    Image Gallery (like Flickr)
    Map Server (like Google Maps)
    Link Directory (like DMOZ)
    Multilingual (like Babel Fish)
    Bug Tracker (like Bugzilla)
    RSS Feeds (like Digg)
    Free Open Source software (LGPL)

    [ via http://www.gpaterno.com/2011/12/23/create-a-secure-intranetextranet-with-tikiwiki-and-securepass/ ]

  • Create a secure intranet/extranet with TikiWiki and SecurePass – Giuseppe Paternò – […]
    In this market segment, there’s still a need for a secure corporate intranet with the need to exchange private information and files. Collaborative places, such as wikis, are perfect solutions to quickly achieve this goal without spending a fortune. I found TikiWiki (http://www.tiki.org/) to suit best in these environments: while extremely easy to use for an end-user through WYSYWIG editor, the complex permission system allow you to set each page access or even show/hide part of the page to a given group of users, which is unique if compared to other solutions
    […]

Bookmarks for 9 dic 2011 through 13 dic 2011

These are my links for 9 dic 2011 through 13 dic 2011:

  • BAT file tips | Alex @ Net – Let's play with BAT files a little. As you may know, BAT files are intended to be run and processed by the MS command processor, named cmd.exe, and the programming language they are created with is very close to BASIC. The early versions of the BAT-files language (which comes from famous Windows ancestor, MS-DOS) were very limited. Nowadays it has more features and a few days ago I created a small collection of interesting tricks, related to BAT file programming. You can check the following examples that demonstrate which execution flow controlling statements BAT-file language has and show their analogs in PHP.
  • 10 Tools To Add Some Spice To Your UNIX Shell Scripts – here are some misconceptions that shell scripts are only for a CLI environment. You can easily use various tools to write GUI and/or network (socket) scripts under KDE or Gnome desktops. Shell scripts can make use of some of the GUI widget (menus, warning boxs, progress bars etc). You can always control the final output, cursor position on screen, various output effects, and so on. With the following tools you can build powerful, interactive, user friendly UNIX / Linux bash shell scripts.
  • Nagios plugin for ASE – SybaseWiki – When you are using Nagios (http://www.nagios.org) as a monitoring tool, it's real easy to implement your own checks for Sybase servers. Here's a sample check to see if your ASE server is up and connectable.

Bookmarks for 17 nov 2011 from 23:06 to 23:56

These are my links for 17 nov 2011 from 23:06 to 23:56:

  • Optimizing WordPress with Nginx, Varnish, APC, W3 Total Cache, and Amazon S3 (With Benchmarks) | danielmiessler.com – So I’ve spent the last couple of weeks tweaking my web server stack. I like my site to pop, and I’ve finally achieved a configuration that I’m somewhat happy with.

    In sum, I’m running Varnish as a front-end to Nginx which is running WordPress loaded with the W3-Total-Cache plugin. The W3-Total-Cache plugin is configured to use both memcached as well as Amazon S3 as its CDN. All of this sits on Ubuntu Linux with Linode as my host.

  • A Varnish Primer | danielmiessler.com – Despite the title, this article has nothing to do with painting. Here I'm going to talk a bit about the Varnish Cache — a web application accelerator designed to dramatically improve how quickly your website loads. Varnish works by caching and serving as much content as possible as "static", including dynamic results, e.g. blog posts from a CMS like WordPress.
  • Varnish best practices « Kristian Lyngstol’s Blog – A while ago I wrote about common Varnish issues, and I think it’s time for an updated version. This time, I’ve decided to include a few somewhat uncommon issues that, if set, can be difficult to spot or track down. A sort of pitfall-avoidance, if you will. I’ll add a little summary with parameters and such at the end.
  • Cain Manor | Setup logging for Varnish – So far, we’ve got Var­nish installed and have a cor­rect default.vcl. Now let’s make sure AWStats/JAW­Stats can read them.

    [Or http://www.hping.org/visitors/ 😉 😉 ]