1. download and prepare.

Start by download  currently available version (7.0.2) of the JBoss 7.

#Web Profile version download.
wget http://download.jboss.org/jbossas/7.0/jboss-as-7.0.2.Final/jboss-as-web-7.0.2.Final.tar.gz

Extracting files to the final location using tar.

<pre>tar zxvf jboss-as-web-7.0.2.Final.tar.gz -C /usr/local/

Now your JBoss 7 is placed inside /usr/local/jboss-as-web-7.0.2.Final/.I dont’t like that name.  It’s just cosmetics, but i prefer to rename the last part ot the path.

cd /usr/local/
mv jboss-as-web-7.0.2.Final/ jboss-7.0.2

Now important things. Some basic security and right management. I suppose  you don’t want to start your JBoss with root rights.
Therefore we need to create new user and new group named  jboss. Make them owner of your JBoss stuff.

addgroup jboss
useradd -g jboss jboss
chown -R jboss:jboss /usr/local/jboss-7.0.2/

Your jboss 7 is almost installed now.

2. Configuration and first test.

Start your brand new  Jboss 7 server with:

sudo -u jboss sh /usr/local/jboss-7.0.2/bin/standalone.sh &

Now it  is testable on your local machine with http://localhost:8080.
But! maybe you trying to install that jboss on remote machine and want to access this installation remotely. I that case you need to enable remote interface of your JBoss. I assume we start by standalone configuration, so  you have to edit /usr/local/jboss-7.0.2/standalone/configuration/standalone.xml file. The easiest way is to  find <interfaces> section and replace the 127.0.0.1 address with <any-address/>

<interfaces>
   <interface name="management">
     <any-address/>
     </interface>
   <interface name="public">
    <any-address/>
   </interface>
 </interfaces>

Beware with this configuration you expose also the management console to the public. The console is bounded to interface named=”management” by default.  In production environments you have to put more attention to this. but now you can access your jboss from anywhere.

3. Jboss as Service

Now we have a basic configured JBoss, but i want to maintain it as a service. Unfortunately Jboss archive has no predefined init.d scripts, so i have to to it on my own. But this is not a big problem, just straightforward following some Debian conventions and useful scripts.

Ok, let’s create jboss maintenance script.

touch /etc/init.d/jboss
chmod 755 /etc/init.d/jboss

Ready! Now put following inside.

#!/bin/sh
### BEGIN INIT INFO
# Provides: jboss
# Required-Start: $local_fs $remote_fs $network $syslog
# Required-Stop: $local_fs $remote_fs $network $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Management of JBoss AS v7.x
### END INIT INFO

#Defining JBOSS_HOME
JBOSS_HOME=/usr/local/jboss-7.0.2

case "$1" in
start)
echo "Starting JBoss AS7..."
sudo -u jboss sh ${JBOSS_HOME}/bin/standalone.sh &
;;
stop)
echo "Stopping JBoss AS7..."
sudo -u jboss sh ${JBOSS_HOME}/bin/jboss-admin.sh --connect command=:shutdown
;;
log)
echo "Showing server.log..."
tail -1000f ${JBOSS_HOME}/standalone/log/server.log
;;
*)
echo "Usage: /etc/init.d/jboss {start|stop|log}"
exit 1
;; esac
exit 0

This file is ready to use. You can use it self for manual start and stop of your jboss, you also can follow the server.log by using “log” parameter.
But let’s make it to the end, as an automatic starting service. It’s easy with update-rc.d script:

update-rc.d jboss defaults

Now your ready and your JBoss will be shutdown on machine shutdown and it should start on machine start-up.

Of course this is not the only way to start using JBoss 7. Your ideas are welcome!

Every year i try some of them and  remove them after few hours. As i remember, they where resource-hungry or just bad in reverse engineering

Some weeks ago i tried ObjectAid UML Explorer Class Diagram and liked it. It could quick and easy create simple class Diagrams – just by Drag & Drop. And i had no problems with static constructors or inner classes and other stuff in the code which causes problems to another Plug-ins.

Unfortunately Object Aid Sequence Diagram are not free but cost not much for private usage. Maybe i’ll try it soon.

But first i would ask you what is your favorite Eclipse IDE Plug-in for fast and easy (e.g. partly) revers engineered UML diagrams which can be used to show some architectural details to your colleagues?

Thank you for comments!

The pictureon the right (klick to enrange)  shows  how Ubunto boot process is going on my 5 years old Thinkpad T60. Bootchart utility does such charts automatically. If you interestiong how easy it it to enable such bootcharting read below.

Installing bootchart

See how to install bootchart logger on ubuntu, and other linux distributions.

Yo need bootchart and, pybootchartgui

apt-get install bootchart

apt-get install pybootchartgui

That will automatically add bootchart logger to your grub configuration . Restart your machine and look for an image file in /var/log/bootchart directory.

Disabling bootchart

Someday you maybe wan’t to disable bootchart again.

To disable it just throw it out of your GRUB configuration. On GRUB 2  (which is default on ubuntu since v. 9.10) you have to change file /etc/default/grub.

Change line

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash bootchart=disable"

and then run:

sudo update-grub

You done.

On GRUB 1 you have to edit /boot/grub/menu.lst.

Any comments?

(This article should be finished half year ago right after i wrote about svn server installation, but unfortunatelly i didn’t find any time to finish it untill now.)

Motivation

My first version control system (VCS) was CVS and i used it with eclipse 2.0 for programming in java. I found CVS quite impressive and liked it a lot. It was also quite reliable and moderatelly fast.
Then someone at the university told us to use SVN, because it has “plenty” of advantages. Somehow i found SVN not bad even if the eclipse svn plugin quality was never quite good. However SVN matured  and became powerful source control system and many many people and companies started using it. I think it’s the most used version control system.

I like SVN for easy branching and tagging (with good eclipse plugin support), for global version numbers, for understanding “http://” (with Web-Dav) as well as for more comfortable managing tools and easy installation and configuration.

But that’s all what i like… There is no more practical advantages over CVS and moreover there are even some disadvantages also in comparison to cvs.

• SVN is slow and double slow over HTTP. It may not be critical if you do your changes on several files and them commits ‘em. I’m doing so in my  java project and it’s ok. But there could be also other scenarios e.g. if you deal with such “monsters” like magento, performance gain very fast on importance
• Folder movement is a nightmare. With the subversion you have to know what you do when you start move around your folders.
• Ugly .svn folders in the folder tree of your project. O course cvs had them too. But do we really need them? Sometimes i just wanna to copy my project tree without that stuff.
• Not closed connection (don’t know if it is an server or eclipse plugin bug). Sometimes svn commits leave not closed connection. Eclipse hangs.
• SVN consumesa lot of space, more than cvs local and on the server.
• You need to be online if you want to commit.

All of these disadvantages i mentioned above are fixed in GIT. Git is much faster, flexible. So let  install it!

Installation

We start with installing the git-core component from linux (debian in my case) public repositories.

$ apt-get update
$ apt-get install git-core

After executing of these commands, which takes only approx. 2 seconds. you have installed the git-core on your machine. So now you can test it by checking the version or common commands list

$ git --version
# Returns e.g.:  git version 1.5.6.5
$ git
# Returns usage options

First good thing to do after a fresh git installation is to define some global properties:

$ git config --global user.name "Alexander Holbreich"
$ git config --global user.email "alexander@xxxxx.org"
$ git config --global color.status auto
$ git config --global color.branch auto

There are also more properties and configuration possibilities for git. But for normal usage you will never need them. If you think different see git config manual.

Normally you will be ready with git installation now.

Usage (Remote repositories)

First you should think about your branching model. Start by nvie model. It looks  a bit complicated, but it covers nearly every aspect in big project work.  In an agile team such an approach is very easy maintained by git. See also related Stackoverflow discussion.

There is a lot of documentation on git usage on the internet so it makes not much sense to cover everything here again. But if you was interested in installing git, maybe you plan to maintain new reposity, so let’s look at them.

Small teams maybe would prefer to work with one central repository (centralized workflow) for it is a common approach we know from svn and cvs times.

Below a bare repository is created as a central one:

$ git init --bare

Then you can clone this (remote) repository to the local one

$ git clone git://originrepository.place/somedir/

Continue to work with local repository, add, remove, and commit files to local one.  If you decide to propagate your changes, say at the end of a day, to the central repository, use:

$ git push origin master

Cloned repositories know their origin repository automatically. “Origins”  have to be bare repository because they have no checked-out working trees. If you push to a repository which has a checked-out working tree (which is still allowed) the working tree will not be updated, and that may lead to unexpected results. To sum up, let your central repositories be created by git init –bare.

In git it is possible to have several remote repositories for one local. You can add them like this:

# here http is used as example
$ git remote add  somelib http://someremoteplace/lib/repo..

where “somelib” is the alias of repo. Next command shows known remote locations:

$ git remote -v # shows defined remote repositories aliases with URLs.

I hope this gives you a motivation to start using GIT. Hope also to see your questions or ideas in the comments.

More Info and Tools

• Git command reference
• Usage tutorial
• Git user manual
• Git Pro Book (Online)
• msysgit git for windows

I started to write here in January 2007 it’s nearly 4 years ago. You see I’m not very productive blogger. Nevertheless i wrote some interesting things which have attracted some people or comments. Here some of them chronologically:

• First Look at Java Persistence API
  
• “No follow” considered harmful
• First steps with Magento
• My TOP 10 WordPress Plugins in 2007. I think a have to make new version of it soon.
• I’ve created a word socialolism and was cited on some link aggregaters relatively popular.
• I was on of the  first hwo checked some new features of Geni.com and gathered their attention, so they send me a T-shirt
• I’ve made an online  calendar of Russian beauties which is unfortunately dessapeared with hosted site. However  i have a picture of it cover.
• I wrote about my time with my son as my wive was away. Part one and part two.
• I have introduced new Wordpress Plugin which definitive need next update right now. I know, i know. I have it on my task list.
• In 2008 we discussed school education in germany
• Then many people found interesting my post about duplication of magento installation. I plan to do new relese on this topic.
• And Last but not least I wrote about Software RAID on linux, installations of JBoss and SSH tunels.

I’ve learned pretty much and i tried different themes. I think in the future i will write more and more technical stuff. So e.g. Java comes to short so far also web technologies where not covered while i have to do with them relatively often.

User statistic

My blog has humble user statistic. This is explainable. My blog has lot spread of themes and i has suffered from the movement to new domain a year ago.  However the number of visitors id growing. So i had 1548 unique visitors  in last 30 days here.

A maximum of visitior per day what this site experienced was 1500 per day. I believe it was post about Jboss installation (mentioned above) which passes pre-selection on some link composing site.
And here is map which show where you maybe comes from.

So stay whith me an you’ll be able to read next hundred of mega cool post very soon.

Here some hardware details:

• Intel Core Duo (T2400 -1,83 Mghz)
• 1 Gb RAM
• 60 GB 5400rpm  hard drive

An here are starttimes on two Systems (in seconds):

As we see Windows takes 1 minute from OS-Selection dialog till User-login dialog, whereas Ubunto takes  only 24 sec. Ok, windows checks  “security chip” (what it exactly means and why it so good for me i don’t know)  and that takes considerable time and i’m unsure whether Ubunto do something like this, but however i can’t change it.

On a graph we see also, that for the rest of “loading work” from login till first page appears in firefox browser windows takes more time again. It takes 95 seconds whereas Ubunto need only 19!  I was clicking on browser Icon as soon it appeared and was “clickable” and waited till pre-selected starting page (google) appears.

Of cause tas is not very strict measurement so maybe I’ve lost one or two seconds somewhere, who cares if

• Ubunto takes 24+19 =43 sec
• Windows takes 60+95 = 155 sec

till i can use my typical day by day application. So now i can save more than a one and halfe minute of my life on every start of a system.

Respect Ubuntu, keep on going!

However this is not one post which should bring JIRA near to you. But if you know that you need it, now is best time to get it, because Atlassian started their “Get Startet” Price, which now allows you to by full functional JIRA for 10$ for ever even with one year support. All you need is a little bit of free CPU time, root access, 10$ and if you buy it outside of USA, you will need a credit card.

I installed it  for my private purposes and it works fine! I just followed Atlassian documentation (Read it carefully). Maybe, the easiest way is to install the “all in one” solution which comes with Apache Tomcat. I choosed that one. But don’t forget to switch to serious database before you start really using it. Take MySQL for example like I did.

I will not provide here step by step how to do it, because Simon has already described some of the important configurations moments as he heard about new pricing and as already mentioned the Atlassian installation guide is good and really answered all my questions.

Nevertheless feel free to ask questions here, about installation and configuration to.

Also i would like to discuss other Atlassian developer tools which also available for 10$. Is here outside someone experienced in bamboo?

The whole set for interested in photography.

Shuron's Letters

Hello everybody! I’d like to present you my new theme for that Blog! The old theme was not good readable in my opinion. Please tell me if you encounter any bugs.

Have a nice day!

There is just one drawback of this method. Uploaded images become automatically description, which say that that picture where uploaded by Folder Monitr (with a link) and a tag “FolderMonitr”. So I don’t like stuff like this. Unfortunately mass edit (or delete i my case) of tags and description is not so comfortable in flickr as it could be.

However I will use FolderMonitr further maybe the description and tag problem cannot outbalance the use of that tool.

P.S. If anybody knows the working way haw too upload pictures to flickr direct out of Lightroom in the version 2.0 is welcome to give me a hint thanks!

New Year

I wish all of you happy new year! May all your wishes come true in 2009!

I wish to learn a perfect time management to made all of the thing that I have to do, and spend enough time with my family. Also I wish to achieve new level in project management and maybe new career level! Why not? I feel ready!

Good luck!

Why the movement

Primary it had to be done because of some problems with hosting service provider. But that is a long story, which I won’t tell you here. However ORG domain is much nicer? What do you think?

wPopularity Plug-In

Please excuse me for not maintaining it. I just have time to keep this site alive, not really for a writing Plug-ins i free time. But I promise i try to find some hours in the winter holidays, to answer all your questions and maybe even to release new version. Thank you for you patience.

Don’t know them?

The first one is the actual President of Russian Federation – Dmitry Medvedev, the second one, is the latest Russian Tsar -Nicholas II. Nicholas II was executed by Bolsheviks in 1918.

However I found this similarity very funny but also somehow strange. Maybe beacuse of history. Nicholas II stands for last moments of non communistic Russia . History has made Nicholas II and his whole family (which was executed too)  very symbolic. It’s difficult to explain. However very strange for me.

P.S. As you see, I’m back again, have much to do, so has to wait few days or even weeks

I found this picture here

Nevertheless I have some ideas on improvement of W-Popularity Plug-in. I think we should give up compatibility of DB-Tables with Popularity Contest Plug in. As i think that should eliminate all possible inter-operation problems with the Plug-in of Alex King, including those activation problems, some of you have report in the comments to my ???????? ????? ????????.

I started already work on version 0.9.4 but i will release it after I’m back again.

This is a personal blog. Isn`t? – Yes. Can I write my personal opinion in my personal blog? Let me think… Of course! Should my personal opinion be somehow conform to the mainstream opinion? – I think you should know the answer

However, during Google continues to mark my site with malware warnings (), because the Google test of cleaned sites takes Sooooooo Looong. , I want to tell you one story, concerning a theme which scares me already for a long time. Don’t laugh, but I wanna speak about school education in Germany.

Maybe you heard already about Pisa Study Results of German “Schuler”? If not, I tell you, their results are really not impressive. How it comes…? Read in the following…

Historical

After the WW2 in West and East Germany began denazification. Germans have done good work and succeeded in that by throwing out everything of the Third Reich. Also the education methods in the Third Reich where considered as unappropriate, I’m not an expert but can imagine that they can appear as too strikt, too idealized for modern times. And therefore totaly unappropriate for modern children. The same happened also after the “unification of Germany” in truly unification is the wrong word, West Germany incorporated East Germany. And of cause education concepts of the “East-Block” (also of the enemy) where thrown out of the window, not even to look on them.

Personal Impression

If I look around and speak with my friends, who have children in school age, I gain the opinion that, the primary school is a place where children are doing everything, except of learning.

So I’m also a big friend of playing. But excuse me, if my son goes to school, I expect that he learns something there! In best case, my children should can read and write and simple math after the first year in school not after the third or even fifth one!

It’s nothing impossible for every child! But children have to be motivated to learn, to be smart, to be educated. I don’t wanna say they should be compeled to learn, mostly it won`t have much success without motivation, but teachers and parents have to be strikt with that in every case.

However, it’s very difficult to be a teacher in our times, teachers have NO rights and might over their pupil, further they really believe ( because it is taught them at the university) that children can learn better without the stress of competition and without any effort and any pressure to perform at least in the beginning of the school. Bullshit! Children love to succeed, love competition. To compete, to win, to learn and to enjoy-this  is their natural urge, I can see it every day, when I look at my little son.

But let me tell you one story of many, which finally lead me to write this article, one story I heard today.

The Story and the Questions

One friend of my wife has a child, who is  the age of 5. The girl goes to the normal German preschool everyday, where they are doing something, as I think playing Once a week the same child also goes to a Russian preschool called “Azbuka”. Now the question: In which language does that child read? The Answer is indeed Russian!

The next question is: What the hell are they doing at the German preschool? With the same success if not better this child could play 5 days a week at a playground…

In my opinion these children are under-cultivated by the German education system in their best years! And many parents have no time to educate children at home because they are working hardly.
P.S. I remember my first “Gymnasium” class teacher, who did laughed at me, when I talked to him that German School Education is far not the best in the world. It  was few years before the first smashing Pisa Study got publicity.

Ok , I know I begin with the introducing of the My wife’s Blog. It’s about books, travel and geography, because my darling do study at the Faculty of Geography. You might find it also interesting even when you will not find there many articles about IT However her English is much better than my

Back to this blog. As you know WordPress 2.5 is out. And somehow there are no security updates at that time. How it comes? Did the WordPress guys didn’t their work really good this time?   Seems to be. So I consider to upgrade in the next time.

Calender and Car

Furthermore I realized that I need again my small personal calendar, Google online calender is not enough. After using it more than 1,5 years I realize that its comfortable to plan long term events with google online calendar, but maybe not so comfortable to plan activities for the next day or even for today.

I also noticed that it is also good to relax more often. So it is not good to drive 50 minutes to work by car. Driving car efforts brain activity. I prefer to drive fast, so driving deserves the biggest part of my attention, the other part is listen to the radio or slips And that not good. It is better to travel by subway, where you brain can be used for other things like thinking about mission of a day to be more effective, thinking about things you normally don’t’ have time too, cause you work to much or just sleep

So think twice and be effective, good luck!

DIGG Effect

Eric Enge has wrote very good article about succes on digg. Some of details he presents my be not true at the moment, because DIGG evolves and changes internal algorithms. However some facts are really interesting.

As he says, stories that where able to reach the digg home page receive an average of 129 links, and more than 10,000 visitors in an hour. Some stories have brought even more than 1,000 links and 100,000 visitors. This shows how important DIGG is and why there are so many legend and so much attention from SEOs. So it has happened many times that stories which have made the home page, have brought the server of the story site can’t handle the traffic load. This is well known phenomena is known as the “Digg Effect”.

Of cause the quality of this kind of visitors is “bad”. Don’t expect that they will by your products and click Ads. Do not expect big growth in comments, DIGG users often comment regarding a site on digg itself instead of on the dugg website. Digg users comes to see only that what they would inspect in the story description on DIGG itself.

I don’t wanna be a Digger

So after reading several articles about how to success on DIGG i realized that it would take very very very much time. So as every body know time is money, but moreover time is life! In my opinion the truly success on DIGG starting from null will deserve much to much time in comparison to the revenue.
Personally I don’t have much time and will not spend it to fullish site like DIGG, voting for silly topics of US tanagers So at the moment and I think also in the future will not spend much time on DIGG or other communities.

I mean isn’t it better to spend time to create wonderful content? It would give you personal much more satisfaction than any DIGG effect. But however good content have in any case good chance to achieve one DIGG effect after another!
So by by DIGG, may others vote for my content, I will not spend my life for Digging

P.S. It doesn’t mean i will not continue submitting my articles to it

Currently I’m the number 49 of top users of the Russian DIGG sister called news2.ru, therefore I think to have some experience and some kind of instinctive feeling for mechanisms we have on that page. News2.ru is a typical example of social news-driven page and is quite similar to DIGG. Therefore my experience can be useful also for DIGG users and other similar Web2.0 sites.

Success factors of digging

As I think there a only two main factors your success (success of your submissions) depends on. That are the quality of your stories and friendship. Yes only them two and some sub issues its quite simple. Such an statement my appear as vague for you, therefore I’ll try to be more concrete.

High quality stories

High quality stories are known as:

• unique
• unusual
• very actual
• interesting for everybody

That are primary properties on successful story. Now you may think that the appreciation of these attributes is highly subjective, that is partly true. However everyone can achieve good objectivity by analysing the actuality of post. E.g. U.S. President election is quite actual at the moment, Cold War maybe not. However with some experience thee appraisal of these properties will get better and better. I can say I began to feel what kind of stories can reach the TOP.

To be actual and have many stories to choose, it is recommended to subscribe to RSS feeds of news portal of your wish or several of them. If your social-community portal presents websites statistic , you are well advised to study it and chose some with the best success rate.

So what to do? How to begin? The answer is clear too, you just have to star and play a bit around. If you are non completely new in the field of social news community, then you just can’t leave this step out. However as already mentioned the success factor of your news will grow with experience.

It is difficult to provide some examples of good or bad news, because it’s highly depends on the time context and also other things like presentation! Presentation is one of the sub factors I wanna say some words about:

• Always use pictures! Choose them with care.
• Use headlines that magnify attention (Compare: “Microsoft considers to by some Yahoo shares” vs. “Microsoft takes over Yahoo!”)
• But use headlines that are precisely express what is in the content behind them. Otherwise your messages can be considered as spam or inaccurate.
• Be aware of duplicates
• The content at it self should be good presented and layout carefully. Don’t write to much, but try to make your link sexy. Don’t lie.
• Use the right category!

Doing so you will create solid and high potential submissions, and you has learned this, the second factor comes to a play which helps enormously to use the potential of your submissions.

Friendship

If in the beginning of your “career” maybe non of your messages reach the top, at a master level the rate of your positive submissions can rise up to 50-99 percent (depending on social service and other factors). But this success is only possible with a active circle of friends!

How to get friends on social communities? You should be able to answer this question at your-self, because it is not much different as in the real life. Friendship grounds on mutuality and deserve much time. Decide for yourself whether you are ready for it. However gaining new friends is in any case new experience and enrichment for everyone.