Home |  MySQL Buzz |  FAQ |  Feeds |  Submit your blog feed |  Feedback |  Archive |  Aggregate feed RSS 2.0 English Deutsch Español Français Italiano 日本語 Русский Português 中文
Showing entries 1 to 30 of 34 Next 4 Older Entries

Displaying posts with tag: networking (reset)

Don’t Miss Percona Live 2013
+0 Vote Up -0Vote Down

Read the original article at Don’t Miss Percona Live 2013

The biggest event on the MySQL calendar is the yearly Percona Live and it’s just around the corner. This year you’ll be able to pick from a whopping 110 technical sessions by 90 different speakers from companies like Facebook, Amazon, Google and Linkedin. Learn what’s happening at the cutting edge of open source database deployments. [...]

For more articles like these go to Sean Hull's Scalable Startups

Related posts:
  • Why you should attend Percona Live 2012
  • Hacking Job Search – Three Meaty Ideas
  • Why do people leave consulting?
    +0 Vote Up -3Vote Down

    Read the original article at Why do people leave consulting?

    As a long time freelancer, it’s a question that’s intrigued me for some time. I do have some theories… First, definitions… I’m not talking about working for a large consulting firm. Although this role may be called “consultant”, my meaning is consultant as sole proprietor, entrepreneur, gun for hire or lone wolf. 1. Make more [...]

    For more articles like these go to Sean Hull's Scalable Startups

    Related posts:
  • Consulting essentials: Getting the business
  • Hiring is a numbers
  •   [Read more...]
    Linus on Instantiation and Armadaification
    +0 Vote Up -1Vote Down

    I feel a sense of pride when I think that I was involved in the development and maintenance of what was probably the first piece of software accepted into Debian which then had and still has direct up-stream support from Microsoft. The world is a better place for having Microsoft in it. The first operating system I ever ran on an 08086-based CPU was MS-DOS 2.x. I remember how thrilled I was when we got to see how my friend’s 80286 system ran BBS software that would cause a modem to dial a local system and display the application as if it were running on a local machine. Totally sweet.

    When we were living at 6162 NE Middle in the nine-eight 292, we got an 80386 which ran Doom. Yeah, the original one, not the fancy new one with the double barrel shotgun, but it would probably run that one, too.

      [Read more...]
    The blog was down yesterday
    +0 Vote Up -0Vote Down

    The brief outage was due to a scheduled move of the servers to a separate rack and subnet dedicated to our work with the Center for Information Assurance & Cybersecurity (ciac) at the University of Washington Bothell (uwb), and a11y.com

    I am currently exercising the new (to us) equipment and hope to winnow the less than awesome equipment over the next quarter. I spent the last six months finding the best in breed of the surplussed DL385 and DL380 chassis we (work) were going to have recycled. The team and I were able to find enough equipment to bring up one of each with eight and six gigs of memory, respectively. These will make excellent hypervisors for provisioning embedded instances of Slackware, Fedora, RHEL, CentOS, Debian, FreeBSD, OpenSolaris, OpenIndiana, FreeDOS, etc.

    When I initially configured this xen paravirt environment, I failed to plan for integration with libvirt, so I am

      [Read more...]
    A Few Thoughts on OSCon and the Open Source Community
    +1 Vote Up -0Vote Down

    This past week I attended OSCon, the annual conference for open source’s true believers. And there was a religious fervor in the air, particularly from the point of view of someone more accustomed to Oracle conferences.

    And if open source is the religion, proprietary closed-source companies are the devil. That having been said, I was surprised how virtually all large companies were demonized. Even long-time defenders of open source like IBM were ignored at best. That didn’t prevent them from coming though, with Microsoft and HP in particular with high-profile sponsorships and PR offensives that didn’t seem to have much influence with the crowd.

    The companies generating buzz were the small companies built around development of their own open source products. There are a surprising number of them out

      [Read more...]
    NIST::NVD::Store::SQLite3 1.00.00
    +0 Vote Up -0Vote Down

    It’s been released. Use this with NIST::NVD 1.00.00 and you will be able to perform immediate look-ups of CVE and CWE data given a CPE URN. For instance:

    cjac@foxtrot:/usr/src/git/f5/NIST-NVD-Store-SQLite3$ perl Makefile.PL ; make ; make test ; cjac@foxtrot:/usr/src/git/f5/NIST-NVD-Store-SQLite3$ perl -MNIST::NVD::Query -MData::Dumper -e '
    $q = NIST::NVD::Query->new(store    => q{SQLite3},database => q{t/data/nvdcve-2.0.db});
    $cve_list = $q->cve_for_cpe( cpe => q{cpe:/a:microsoft:ie:7.0.5730.11} );
    print Data::Dumper::Dumper { cve_list => $cve_list, first_cvss => $q->cve( cve_id => $cve_list->[0] )->{q{vuln:cvss}} }
    '
    $VAR1 = {
              'cve_list' => [
                              'CVE-2002-2435',
                              'CVE-2010-5071'
                            ],
              'first_cvss' => {
      [Read more...]
    NIST::NVD 1.00.00
    +0 Vote Up -0Vote Down

    I’m leaving myself some room for bug fixes. It works for us in house. I would love to help others to give it a try. especially those who could benefit from making nearly immediately answered queries to the NIST’s NVD database.

    The code in this release cannot by itself track the feed from the feds in real time. The nvd entry loader needs a little bit of love in the area of record merging before this starts working. It’s on my TODO list.

    I’m sorry for the outage of git.colliertech.org. I’ll get that back up here shortly. In the meantime, feel free to grab it from this location while the CPAN indexes and processes my submission.

    http://www.colliertech.org/federal/NIST/NIST-NVD-1.00.00.tar.bz2

    don’t forget to check the cryptographic signature:

      [Read more...]
    TunnelMaker, a simple script to generate multi-hop SSH tunnels
    +0 Vote Up -0Vote Down

    SSH tunnels provide a very effective means to access remote services and applications. Not only does it provide encryption of data between hosts, but it allows you to route connections between a sequence of servers, thus chaining connections. A common use of this method is to provide encrypted connections to MySQL servers so that user accounts can be limited to only “localhost” privileges, yet accessed from remote workstations without having to run MySQL+SSL.

    The concept is simple, for example let’s say you have three servers: localhost (your workstation in America), a server in Europe, and a server in Japan. You want to access Apache running on port 80 on the Japan server but because of firewall restrictions you cannot access port 80 remotely, and to make things more difficult the Japan server only allows SSH connections from the Europe server’s IP. We can

      [Read more...]
    Tech Messages | 2012-05-11
    +0 Vote Up -0Vote Down

    A special extended edition of Tech Messages for 2011-09-21 through 2012-05-11:

    Pictures from Pedro’s Dinner 2012
    +0 Vote Up -0Vote Down

    Pedro’s dinner was full! I didn’t count, but we had 9 tables of 8-10 people or so – dare I say almost 100 people? Lots of beer, margaritas, and good conversations! Here are a few pictures from the event:

      [Read more...]
    NIST::NVD CWE development – follow along
    +0 Vote Up -0Vote Down

    I’m in the process of getting the tests passing for the 0.03 release of NIST::NVD::Store::SQLite3 wherein our hero imports the CWE data and cross-indexes it with CVEs and CPEs.

    Follow along and suggest some patches. I’m developing on Debian Wheezy, but I would very much like input from devs on other platforms.

    http://git.colliertech.org/?p=NIST-NVD-Store-SQLite3.git;a=summary

    cjac@foxtrot:/tmp$ time git clone http://git.colliertech.org/git/NIST-NVD-Store-SQLite3.git
    Cloning into 'NIST-NVD-Store-SQLite3'...
    
    real	0m32.757s
    user	0m0.200s
    sys	0m0.088s
    cjac@foxtrot:/tmp$ ls NIST-NVD-Store-SQLite3/t/data/
    cwec_v2.1.xml  nvdcve-2.0-test.xml
    

    Publish your patches and I’ll fetch them, or you can submit them in udiff format and I’ll review/apply. Thanks for playing

      [Read more...]
    Book review – Trust Agents by Chris Brogan & Julien Smith
    +0 Vote Up -0Vote Down

    Read the original article at Book review – Trust Agents by Chris Brogan & Julien Smith

    Stumbling onto 800-CEO-Read, and their top books feature, I found Brogan and Smith's work.  Brogan's blog intrigued me enough so I walked down to the Strand here in NYC to pick up a copy.

    What I found was an excellent introduction to the nebulous world of social media marketing, where you find all sorts of advice and suggestions on how to engage your target audience.  If you're feeling like an ignoramus on matters of social media, Trust Agents is a great place to start and will give you

      [Read more...]
    Tech Messages | 2011-09-21
    +0 Vote Up -0Vote Down

    A special extended edition of Tech Messages for 2011-08-31 through 2011-09-21:

      [Read more...]
    Load balancing SIP across Asterisk with BIG-IP
    +0 Vote Up -0Vote Down

    Topology

    Participating hosts

    * 1x BIG-IP VE
    * 1x Debian Squeeze “Provisioning Server” serving DHCP, TFTP & DNS
    * 3x Nortel/Avaya 1120E hard phones flashed to SIP1120e04.01.13.00
    * 2x Debian Squeeze + digium asterisk packages:

    $ grep asterisk /etc/apt/sources.list
    deb http://packages.asterisk.org/deb squeeze main
    deb-src http://packages.asterisk.org/deb squeeze main
    

    DUNDi

    *CLI> module reload pbx_dundi.so
    *CLI> dundi show peers
    *CLI> dundi show mappings
    *CLI> dundi lookup 4012@extensions bypass
    *CLI> dundi set debug on
    

    SIP

    *CLI> sip show peers
    

    dialplan

    *CLI> dialplan show RegisteredDevices
    

    Work in progress

    Yesterday, I installed a trixbox virtual machine using the




      [Read more...]
    Tech Messages | 2011-02-02
    +0 Vote Up -0Vote Down

    A special extended edition of Tech Messages for 2011-01-27 through 2011-02-02:




      [Read more...]
    Tech Messages | 2011-01-15
    +0 Vote Up -0Vote Down

    A special extended edition of Tech Messages for 2011-01-12 through 2011-01-15:

      [Read more...]
    RFC 3177 (IPv6 Address Assignment to End Sites) Has Been Obsoleted
    +0 Vote Up -0Vote Down

    For those that don’t follow the ARIN Public Policy Mailing List, the following is excerpted from a post by Thomas Narten in response to the announcement that the IESG has approved a new document to replace the existing RFC 3177 (IPv6 Address Assignment to End Sites).

    > The IESG has approved the following document:
    > – ‘IPv6 Address Assignment to End Sites’
    > (draft-ietf-v6ops-3177bis-end-sites-01.txt) as a BCP

    Quoting from the Introduction:

    This document obsoletes RFC 3177, updating its recommendations in the following ways:



      [Read more...]
    Tech Messages | 2011-01-08
    +0 Vote Up -0Vote Down

    A special extended edition of Tech Messages for 2011-01-07 through 2011-01-08:

      [Read more...]
    Tech Messages | 2011-01-04
    +0 Vote Up -0Vote Down

    A special extended edition of Tech Messages for 2010-12-22 through 2011-01-04:

      [Read more...]
    Tech Messages | 2010-12-21
    +0 Vote Up -0Vote Down

    A special extended edition of Tech Messages for 2010-12-14 through 2010-12-21:

      [Read more...]
    Introducing tcprstat, a TCP response time tool
    +4 Vote Up -0Vote Down

    Ignacio Nin and I (mostly Ignacio) have worked together to create tcprstat[1], a new tool that times TCP requests and prints out statistics on them. The output looks somewhat like vmstat or iostat, but we’ve chosen the statistics carefully so you can compute meaningful things about your TCP traffic.

    What is this good for? In a nutshell, it is a lightweight way to measure response times on a server such as a database, memcached, Apache, and so on. You can use this information for historical metrics, capacity planning, troubleshooting, and monitoring to name just a few.

    The tcprstat tool itself is a means of gathering raw statistics, which are suitable for storing and manipulating with other programs and scripts. By default, tcprstat works just like vmstat: it runs once, prints out a line, and exits. You’ll probably want to

      [Read more...]
    mysql jdbc connector autoReconnect=true
    +0 Vote Up -0Vote Down

    What makes you think jdbc autoreconnect is needed?
    Application is idle for long periods at a time?
    Wait_timeout too short?
    Network failure or glitches?

    Some good suggestions form Mark Matthews - Bug #5020

    Having encountered the problem again myself today, trying to make jdbc for mysql reconnect any terminated connections using autoreconnect=true I figured out a way to work it out from the pooling side.


    Introduction to the problem:

    On the mysql side wait_timeout is set to default 8hrs and any connections idle for longer than that were beomg terminated despite setting the connection string to: url=jdbc:mysql://localhost:3306/dbname?autoReconnect=true. The application was thence throwing an exception.

    The solution was to introduce a ping







      [Read more...]
    Tech Messages | 2010-05-14
    +0 Vote Up -0Vote Down

    A special extended edition of Tech Messages for 2010-04-29 through 2010-05-14:

      [Read more...]
    MySQL – IP vs DNS
    +0 Vote Up -0Vote Down

    A MySQL is running happily on a machine situated in a land far far away. I grant access to a user@machine_aaaaaa (grant select on db.* to ‘user’@'machine_aaaaa’ identified by ‘password’; flush privileges;), send an email to the user saying it should run fine and happily go off my way. Mistake!

    It seems this user can’t connect to the mysql gets access denied:
    Access denied for user ‘user’@'machine_bbbbb’ (using password: YES)

    Note that the machine the user is being seen from is totally different from the one I set up in the grant!! WHY?

    run a reverse lookup on the ip of machine_aaaaa, turns out it shows machine_bbbbb. So I figure a big bad guy messed up /etc/hosts, I was right! `cat /etc/hosts` just to find an entry for machine_aaaaa blehh

    Ok, solution is to remove the entry from /etc/hosts (after


      [Read more...]
    How I stopped worrying and learned to love Twitter
    Employee +2 Vote Up -2Vote Down

    I was warned by my brother a while ago that should I start tweeting, he would stage an intervention. I had already confessed to accounts with facebook, multiply, myspace, and several others (disclaimer/explanation: all of those sites are customers of my longtime employer (http://www.mysql.com)). Twitter, to the uninitiated, looks like the crack cocaine of social networking that turns the weekend photo-poster into a hardcore jittering lifecaster. Nobody wants to see their family member come to that, right? But follow along, twitter has purpose. Or just skip to the bottom.


     I was never an active friendster user. The first site I used regularly was the more inward-facing



      [Read more...]
    How I stopped worrying and learned to love Twitter
    Employee +0 Vote Up -0Vote Down

    I was warned by my brother a while ago that should I start tweeting, he would stage an intervention. I had already confessed to accounts with facebook, multiply, myspace, and several others (disclaimer/explanation: all of those sites are customers of my longtime employer (http://www.mysql.com)). Twitter, to the uninitiated, looks like the crack cocaine of social networking that turns the weekend photo-poster into a hardcore jittering lifecaster. Nobody wants to see their family member come to that, right? But follow along, twitter has purpose. Or just skip to the bottom.


     I was never an active friendster user. The first site I used regularly was the more inward-facing



      [Read more...]
    How I stopped worrying and learned to love Twitter
    Employee +0 Vote Up -0Vote Down

    I was warned by my brother a while ago that should I start tweeting, he would stage an intervention. I had already confessed to accounts with facebook, multiply, myspace, and several others (disclaimer/explanation: all of those sites are customers of my longtime employer (http://www.mysql.com)). Twitter, to the uninitiated, looks like the crack cocaine of social networking that turns the weekend photo-poster into a hardcore jittering lifecaster. Nobody wants to see their family member come to that, right? But follow along, twitter has purpose. Or just skip to the bottom.


     I was never an active friendster user. The first site I used regularly was the more inward-facing



      [Read more...]
    Tech Messages | 2009-06-25
    +0 Vote Up -0Vote Down

    A special extended edition of Tech Messages for 2009-06-16 through 2009-06-25:

      [Read more...]
    Wikipedia on Sun | MySQL Servers
    Employee +0 Vote Up -0Vote Down

    Wikimedia Foundation is expanding Wikipedia to multimedia with Sun Open Storage Solution and MySQL Database (http://www.mysql.com/customers/customer.php?id=186" target="_blank):

    Wikipedia receives between 25,000 and 60,000 page requests per second, depending on the time of day. Wikimedia needed to update its infrastructure to handle this huge volume of traffic and ensure that its systems were reliable, highly available, and easily scalable. It also wanted to expand its upload file limit from 20 MB to 100 MB to accommodate rich media (audio and video) content,


      [Read more...]
    Wikipedia on Sun | MySQL Servers
    Employee +0 Vote Up -0Vote Down

    Wikimedia Foundation is expanding Wikipedia to multimedia with Sun Open Storage Solution and MySQL Database (http://www.mysql.com/customers/customer.php?id=186" target="_blank):

    Wikipedia receives between 25,000 and 60,000 page requests per second, depending on the time of day. Wikimedia needed to update its infrastructure to handle this huge volume of traffic and ensure that its systems were reliable, highly available, and easily scalable. It also wanted to expand its upload file limit from 20 MB to 100 MB to accommodate rich media (audio and video)


      [Read more...]
    Showing entries 1 to 30 of 34 Next 4 Older Entries

    Planet MySQL © 1995, 2014, Oracle Corporation and/or its affiliates   Legal Policies | Your Privacy Rights | Terms of Use

    Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.