I'm experimenting with a basic cluster configuration inside Virtual
Box (running Ubuntu 10.04 LTS) using
MySQL distrib mysql-5.5.22 ndb-7.2.6, for linux2.6 (x86_64). (I've
downloaded the latest generic Linux
binary from the main website.)
I've successfully set up a working cluster inside a single VM
(obviously just for testing), which contains
two ndb_mgmd, two ndbd and two mysqld nodes. (In production I plan to
run these on two or more
machines.)
I've posted my cluster configuration[1] and the outline of how I start
my processes[2] to pastebin.
Everything works fine, but I've noticed that there are four ndbd
processes running on the machine.
I've posted some info on these four processes[3] to pastebin too.
I've noticed that each two processes are in a parent-child
relationship, and I figure that this *could*
be normal, but I'm not sure. Anyone has an explanation why is this
happening? (I didn't find info
on this particular matter in the MySQL 5.5 Reference Manual - not yet at least.)
Thanks in advance!
Regards,
Kohányi Róbert
[1]: http://pastebin.com/raw.php?i=j5jH8nrw
[2]: http://pastebin.com/raw.php?i=MuGRKDtQ
[3]: http://pastebin.com/raw.php?i=RNEJinjn
