perfsonar development work

[Tsompanidis Ilias <>]

Jochen Reinwand wrote:

Hi Nicolas, all,

On Thursday 31 May 2007 12:03, Nicolas Simar wrote:
  

Cesaroni Giovanni wrote:
    

What are the drawbacks of such methods?
Could it be a way of providing easy to install perfsonar web-services
or it will decrease their performances?
        

The use of VMW has no particular drawbacks other than what Jochen said,
but I don't think it is a good solution:
all the sw is usually installed on a linux box by the package manager of
the system (for debian apt-get, for red hat yum and so on) from a pakage
(.deb, .rpm, ..) with just a command. It will be nice to have such a
linux package of each perfsonar service.
      

What is the difference with ANT currently used?
    

Ant is more a replacement for "configure;make;make install" and not really for 
package management! Nearly every system administrator prefers to have 
software in the form the operating system handles software packages, like 
RPM. There are many reasons for that. For one of the most important see my 
next comment.

  

Moreover, in this case, the upgrade of the sw to a new release will be
very easy.
      

How is it easier?
    

For Linux there are special update mechanisms (mostly yum and apt) that do a 
lot of work for you when it comes to updating software. This is the way 
system administrators expect such things to be handled. Why not use the power 
these systems offer?

  

I agree , and add on;
those mechanisms offer prerequisites and dependency checking mechanisms, that can also fetch those packeges, and do the same checks for those too. For example, i had used Gentoo's "emerge" to install one package, and it automatically fetched all 36 dependencies (either missing, or wrong version). And it makes it easier for the systems administrators, to make sure that the package to be installed, along with all it's dependencies won't crash something else - It will warn you if you try to use a library version that is known to cause problems with something already installed.
I have mostly worked with Gentoo's "emerge" and Debian's / Ubuntu's "apt-get", and both of them are great. Oh, and using the GUI of something like this, then it can be a trully "point and click" installation ;)

Greets,
Ilias

greetings,
Jochen

  

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