Hello Steve, this is the wrong ML so I will keep it short. I have complete steps 1 and 2 below. There is not if any traffic on the smartfrog-users ML. I cannot the the smarfrog or sfDaemon to start to be able to complete step #3. What is the best venue to get some advice? Please advise, David.
Steve Loughran wrote .. > David Brown wrote: > > Hello Steve, I am subscribed to various MLs such as Ant and Tomcat because I > seem to find something that grabs my interest almost daily. And, the smartfrog > link below is no exception. I went directly to smartfrog and I have been > reading > avidly for several hours. > > > > >And, I agree with the rhetoric so far that smartfrog is not arcane but is > >overwhelming > to the new user because of all the features (reminds me of JMeter). > > > >My current gig is a Tomcat/JBoss assessment for a company that is in dire > >need > of performance tuning and some type of vertical of horizontal scaling > >such that their current web app and web service installations can > scale up to 25k users. I am currently using JMeter for remote > distributed testing > > but what I need more are multiple instances of their servlet > containers (Tomcat & JBoss). JBoss lends it self to multiple instances > very handily > >but their current Tomcat 5.5 by what I have seen on the Tomcat ML can > be problematic to configure and difficult to maintain as a > >stable multiple instance server. My question is (before I spend a > gazillion hours working-out the smartfrog examples) can smartfrog help > > toward creating a computing grid using disparate machines and > disparate systems of disparate JDKs/JREs and disparate Tomcat versions? > > disparate JDKs is trouble. What we like to do in that world is push out > the right JDK versions, usually by uploading and installing the RPMs. > That said, as long as you are running java5+, SmartFrog is happy. > > The way to view SmartFrog is the components and the runtimes to do large > cluster systems, but not some nice shrink-wrapped tool to do it for you. > What we use for big systems is: > > - Anubis ( http://wiki.smartfrog.org/wiki/display/sf/Anubis ) so that > deployed nodes can find each other without a central manager. This is a > tuple space that notifies peers on a LAN when nodes come and go. > > -a special anubisdeployer that deploys work to any machine matching the > requirements > > -a CpuMonitor component that runs vmstat to determine current system > load. This is used to trigger requests new machines, and for machines to > declare themselves idle, when they can be returned to the pool. > > There's a big dynamicwebserver example that installs and runs apache > httpd on demand; Supporting Tomcat should be similar; its just not (yet) > something anyone's put together > > >What are the advantages of smartfrog over just using JMeter and > load-balancing? I read the PDF whitepaper: Globus Toolkit and smartfrog > but that reading did not lead to anymore confidence. > > What happened to the day when I had time to read the Loughran/Hatcher > Ant book and then go-to-work? Please advise, David. > > I dont know what happened to time either. > > Where things get interesting over basic load balancing is when you > allocate real/virtual machines on demand. With virtualisation (I'm doing > stuff with amazon's EC2 farm right now), you really can do interesting > stuff. There's some VMWare components being done in the Open Source > repository; demand allocation of VMs followed by configuration of the > deployed machines. This is both cost effective and agile. > > see also: > http://people.apache.org/~stevel/slides/farms_fabrics_and_clouds.pdf > > > What I'd recommend you do is > 1. grab today's release, preferably the self-installing JAR or the > linux RPMs > > http://sourceforge.net/project/showfiles.php?group_id=87384&package_id=108447&release_id=576780 > > 2. Get on the smartfrog-users mailing list and discuss what you want > to do; see if we can't come up with the right combination of things: > http://sourceforge.net/mailarchive/forum.php?forum_name=smartfrog-users > > 3. Pick something small, like database+app server, before going for the > 200+ node server farms. > > -steve > > > > -- > Steve Loughran http://www.1060.org/blogxter/publish/5 > Author: Ant in Action http://antbook.org/ > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
