Tagged Questions

0
votes
1answer
34 views

setting up environment variables for aws hadoop ec2

I've been following this book: Hadoop in Action It gives a nice guide on how to start using ec2 with hadoop. One of the first things that it says is to download the command line tools here: ...
2
votes
1answer
327 views

Approach to auto-scaling with Amazon AWS

I want to know about the possible options for auto-scaling my web app architecture. What I have in architect is web-app (Tomcat), middleware (RabbitMQ), database(MongoDB), worker(standalone Java app). ...
0
votes
1answer
485 views

what is my $JAVA_HOME path

Just launched an instance of EC2 and I tried doing: $JAVA_HOME/bin/java -version it gives me back: $JAVA_HOME/bin/java -version java version "1.6.0_20" OpenJDK Runtime Environment (IcedTea6 ...
0
votes
3answers
458 views

JVM hangs with 100 IO wait on Ubuntu Maverick (AWS EC2 xlarge instance)

Asked this question on on stackoverflow, reposting: Have an xlarge instance in AWS running 9 Tomcats with heaps from 256M to 4G. With Ubuntu 10.04 the box sporadically hangs for a few hours with huge ...
0
votes
0answers
315 views

JVM hangs with 100 IO wait on Ubuntu Maverick (AWS EC2 xlarge instance)

Have an xlarge instance in AWS running 9 Tomcats with heaps from 256M to 4G. With Ubuntu 10.04 the box sporadically hangs for a few hours with huge run queue (30-40), and nothing on CPU, then ...
0
votes
1answer
738 views

Web server on Amazon EC2 Ubuntu, port 80

How to set up a web server on a EC2 Ubuntu on port 80? There already seems to be a daemon listening on port 80 by default? What is that daemon and is it safe to kill it? #lsof -i java 1290 ...