Each data node is actually made up of 2 ndbd processes - the main one and its angel. If
you've set STOPONERROR to false then the agent will automatically restart the main ndbd
process should it die.
From: Róbert Kohányi [mailto:kohanyi.robert@stripped]
Sent: 24 May 2012 12:54
Subject: Starting a single ndbd instance spawns two processes
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
I've posted my cluster configuration and the outline of how I start my processes to
Everything works fine, but I've noticed that there are four ndbd processes running on the
I've posted some info on these four processes 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
Thanks in advance!
MySQL Cluster Mailing List
For list archives: http://lists.mysql.com/cluster
To unsubscribe: http://lists.mysql.com/cluster