After successfully testing your single-host cluster, you may wish to convert your host into a master host for use in a multiple-host cluster. To do this, you need to reconfigure your host to function in a cluster containing more than one host.
This appendix is intended to be a replacement for "Chapter 3: Install the Master Host" in the Planning and Installing Your Cluster on Linux guide, because you do not need to install a new master host if you migrate your host to a master host.
Note that the database installed with a single-host cluster functions with a multiple-host cluster but is not supported in a production environment. To make the Reporting feature work in a production cluster, you will also have to move to a commercial database, as described in Administering Platform EGO.
The following steps summarize the migration of your single-host cluster to a master host for use in a multiple-host cluster.
On Linux hosts, set the environment before you run any EGO commands. You need to do this once for each session you open. Both root and egoadmin accounts use EGO commands to configure and start the cluster.
You need to reset the environment if the environment changes during your session, for example, if you run egoconfig mghost, which changes the location of some configuration files.
These examples assume the default installation directory /opt/ego.
Redefine your host to be a management host only. You need a shared directory to store important files.
where shared_dir is the shared directory that will contain important files such as configuration files to support master host failover.