This section covers the steps necessary to install the correct executables for each type of Cluster node from precompiled binaries supplied by Oracle.
For setting up a cluster using precompiled binaries, the first
step in the installation process for each cluster host is to
download the binary archive from the
NDB Cluster downloads
page. (For the most recent 64-bit NDB 7.6 release, this
is
mysql-cluster-gpl-7.6.30-linux-glibc2.12-x86_64.tar.gz
.)
We assume that you have placed this file in each machine's
/var/tmp
directory.
If you require a custom binary, see Installing MySQL Using a Development Source Tree.
After completing the installation, do not yet start any of the binaries. We show you how to do so following the configuration of the nodes (see Section 3.3, “Initial Configuration of NDB Cluster”).
SQL nodes.
On each of the machines designated to host SQL nodes, perform
the following steps as the system root
user:
Check your
/etc/passwd
and/etc/group
files (or use whatever tools are provided by your operating system for managing users and groups) to see whether there is already amysql
group andmysql
user on the system. Some OS distributions create these as part of the operating system installation process. If they are not already present, create a newmysql
user group, and then add amysql
user to this group:$> groupadd mysql $> useradd -g mysql -s /bin/false mysql
The syntax for useradd and groupadd may differ slightly on different versions of Unix, or they may have different names such as adduser and addgroup.
Change location to the directory containing the downloaded file, unpack the archive, and create a symbolic link named
mysql
to themysql
directory.NoteThe actual file and directory names vary according to the NDB Cluster version number.
$> cd /var/tmp $> tar -C /usr/local -xzvf mysql-cluster-gpl-7.6.30-linux-glibc2.12-x86_64.tar.gz $> ln -s /usr/local/mysql-cluster-gpl-7.6.30-linux-glibc2.12-x86_64 /usr/local/mysql
Change location to the
mysql
directory and set up the system databases using mysqld--initialize
as shown here:$> cd mysql $> mysqld --initialize
This generates a random password for the MySQL
root
account. If you do not want the random password to be generated, you can substitute the--initialize-insecure
option for--initialize
. In either case, you should review Initializing the Data Directory, for additional information before performing this step. See also mysql_secure_installation — Improve MySQL Installation Security.Set the necessary permissions for the MySQL server and data directories:
$> chown -R root . $> chown -R mysql data $> chgrp -R mysql .
Copy the MySQL startup script to the appropriate directory, make it executable, and set it to start when the operating system is booted up:
$> cp support-files/mysql.server /etc/rc.d/init.d/ $> chmod +x /etc/rc.d/init.d/mysql.server $> chkconfig --add mysql.server
(The startup scripts directory may vary depending on your operating system and version—for example, in some Linux distributions, it is
/etc/init.d
.)Here we use Red Hat's chkconfig for creating links to the startup scripts; use whatever means is appropriate for this purpose on your platform, such as update-rc.d on Debian.
Remember that the preceding steps must be repeated on each machine where an SQL node is to reside.
Data nodes.
Installation of the data nodes does not require the
mysqld binary. Only the NDB Cluster data
node executable ndbd (single-threaded) or
ndbmtd (multithreaded) is required. These
binaries can also be found in the .tar.gz
archive. Again, we assume that you have placed this archive in
/var/tmp
.
As system root
(that is, after using
sudo, su root, or your
system's equivalent for temporarily assuming the system
administrator account's privileges), perform the following steps
to install the data node binaries on the data node hosts:
Change location to the
/var/tmp
directory, and extract the ndbd and ndbmtd binaries from the archive into a suitable directory such as/usr/local/bin
:$> cd /var/tmp $> tar -zxvf mysql-cluster-gpl-7.6.30-linux-glibc2.12-x86_64.tar.gz $> cd mysql-cluster-gpl-7.6.30-linux-glibc2.12-x86_64 $> cp bin/ndbd /usr/local/bin/ndbd $> cp bin/ndbmtd /usr/local/bin/ndbmtd
(You can safely delete the directory created by unpacking the downloaded archive, and the files it contains, from
/var/tmp
once ndb_mgm and ndb_mgmd have been copied to the executables directory.)Change location to the directory into which you copied the files, and then make both of them executable:
$> cd /usr/local/bin $> chmod +x ndb*
The preceding steps should be repeated on each data node host.
Although only one of the data node executables is required to run an NDB Cluster data node, we have shown you how to install both ndbd and ndbmtd in the preceding instructions. We recommend that you do this when installing or upgrading NDB Cluster, even if you plan to use only one of them, since this should save time and trouble in the event that you later decide to change from one to the other.
The data directory on each machine hosting a data node is
/usr/local/mysql/data
. This piece of
information is essential when configuring the management node.
(See Section 3.3, “Initial Configuration of NDB Cluster”.)
Management nodes.
Installation of the management node does not require the
mysqld binary. Only the NDB Cluster
management server (ndb_mgmd) is required;
you most likely want to install the management client
(ndb_mgm) as well. Both of these binaries
also be found in the .tar.gz
archive.
Again, we assume that you have placed this archive in
/var/tmp
.
As system root
, perform the following steps
to install ndb_mgmd and
ndb_mgm on the management node host:
Change location to the
/var/tmp
directory, and extract the ndb_mgm and ndb_mgmd from the archive into a suitable directory such as/usr/local/bin
:$> cd /var/tmp $> tar -zxvf mysql-cluster-gpl-7.6.30-linux-glibc2.12-x86_64.tar.gz $> cd mysql-cluster-gpl-7.6.30-linux-glibc2.12-x86_64 $> cp bin/ndb_mgm* /usr/local/bin
(You can safely delete the directory created by unpacking the downloaded archive, and the files it contains, from
/var/tmp
once ndb_mgm and ndb_mgmd have been copied to the executables directory.)Change location to the directory into which you copied the files, and then make both of them executable:
$> cd /usr/local/bin $> chmod +x ndb_mgm*
In Section 3.3, “Initial Configuration of NDB Cluster”, we create configuration files for all of the nodes in our example NDB Cluster.