Java

To monitor Tomcat with Munin 2.0 on Debian GNU/Linux (tested on Debian Squeeze with Tomcat6 and Debian Backports), you need the following steps.

First, you need to install package tomcat6-admin which enables the Tomcat Manager app we will be using.

# apt-get install tomcat6-admin

Next, create a user with a manager role in Tomcat, editing /etc/tomcat6/tomcat-users.xml and adding the following two lines in the appropriate list.

After Ubuntu's decision to default to OpenJDK for 10.04 (which is a good decision, IMHO), Sun's (but is it still Sun, or Oracle?) JAVA somewhat "disappeared" from Ubuntu (multiverse). That being said, some people may still need features only available in Sun's JRE/JDK, which might not yet have been Freed. Actually, Ubuntu is still shipping it, but in its "partner" section.

We have a student working for us on comparisons between various LMSes here, and we recently moved on to Sakai. We've been looking a bit at installing it on an Ubuntu 9.04 and boy... is this a challenge. While there seems to be a few sources of documentation around the web (including on the Sakai website itself) on how to install it, they're all giving a 20 pages-long guide on how to install a specific version of Java (from sources), a specific version of Tomcat (from sources) and a specific version of Sakai (from sources as well).

This article was first written in September 2004 for the BeezNest technical
website (http://glasnost.beeznest.org/articles/174).

It may seem natural that Java should be available on Solaris. Actually, it is, but Solaris 8 for example features an obsolete JRE (Java Runtime Environment), JRE 1.2. Let us see how to install a r(d)ecent JRE on Solaris. Download the JRE for Solaris, and for your architecture.