JIS 0.3
Java In Sync - My first attempt at writing a program that can push and/or pull several files on several workers in parallel. This is done by using Java Threads. This cuts down on the time significantly. It especially helps when one of the nodes is down, because the other Thread continue to get and receive data while the stuck thread waits for it's timeout.
Java In Sync was later scrubbed because I never felt it was secure enough. But the thread monitoring tool written for it was very good and has been used in other programs, namely GSA & SSM.
GSA 1.0, 2.0 & 2.1
Graphical System Administrator 1.0 was crude by what GSA looks like now, but it also did many things that 2.0 & up couldn't. In some ways it was very flexible, because you could make rsh commands and execute them on all the nodes in your cluster and view the results graphically. In other ways it was very inflexible. Managing the clusters was hard, if a node was down, you had to move it to a different cluster to make the alarm go away. But like JIS, GSA 1.0 provided some valuable classes for later GSA's and SSM. Security was also a problem.
Graphical System Administrator 2.0 - This was a huge leap from 1.0, basically a complete rewrite.. It supported a limited hierarchal view. It used JIS's threading ability and was able to check on several systems in parallel, this speeding up the process. It was easy to configure, using groups and nodes. The big problem was it was no longer a system administrator, it was really just a system checker, but it still kept the GSA name. It was a little crude, but it offered much more potential than it's counterpart. There also wasn't any security problems.
Graphical System Administrator 2.1 - GSA starts getting functional and more user friendly with this release. The biggest
advance was the acknowledge alarm. Now the user could just click a button, and the alarm wouldn't travel up anymore to
the higher portions of the screen. There was other new features like loads as well, and the ability to look at the status of
the different threads while they were checking. Though most of them flickered by so fast that you really only got to see
the ones that were waiting for a timeout.
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May 31, 2000