LinuxJedi's /dev/null

After a year of almost no development I decided recently to pickup ndb_watch again and see if I could improve it.  A few weeks later and I have 0.6.0 ready for the world to use.

ndb_watch is a utility I written in C to monitor MySQL Cluster NDB nodes and mail a systems administrator when they fail.

It has many new features such as memory statistics (thanks to Monty Taylor), multiple management nodes and better email handling.  There are also many bug fixes.

If you fancy taking a look please go to its sourceforge page.

I am open to patches, bug reports and suggestions for future versions.

UPDATE 10th August
There is now an Ubuntu Hardy i386 package on SourceForge for this too.  Built against the packages at https://launchpad.net/~ndb-bindings/+archive

MySQL NDB cluster is a relatively new technology which as of MySQL 5.0 in my opinion is still not fully mature. That said great amounts of work have gone into it in MySQL 5.1 and even the 5.0 version can be very stable if looked after properly.

Why use MySQL cluster?

MySQL cluster is designed for high availability, so downtime due to a single node failure should be significantly reduced, in fact in this setup any 2 servers can fail and the cluster will still run. I personally would not recommend running MySQL NDB cluster in the setup described in this document if you are looking for high performance as well as high availability, you will require more servers for this.