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Changing TREX Host NamesLocate this document in the navigation structure

Use

You want to change the host names of the servers on which TREX is installed. You can do this for the following scenarios:

  • Installing TREX with Virtual Host Names

    To make your TREX installation accessible by a virtual host name you rename the host name of the host on which you intend to install TREX.

  • Changing the TREX host name (single host)

    You change the TREX host name for a TREX single-host installation on the host where TREX has been installed.

  • Changing TREX host names (multiple hosts)

    You change the TREX host name for a TREX multiple-host installation on each host in your distributed TREX landscape where TREX has been installed and configured. You change the host name on one TREX host first and repeat the same procedure for the other hosts that you want to rename.

Prerequisites

The new host name must be valid at the operating system level. It can be a new primary host name, an additional alias name, or it's IP address. The host must be accessible with this name using the ping command. In a distributed TREX landscape (multiple-host-Installation) the host must be accessible with this name using the ping command from all other hosts as well.

Naming Conventions

<TREX_DIR>

Installation directory for TREX.

  • On UNIX: /usr/sap/<SAPSID>/ TRX<instance_number>

  • On Windows <disk_drive>:\usr\sap\<SAPSID>\ TRX<instance_number>

<TREX_INSTANCE>

Directory of the TREX Instance

<TREX_DIR>/<trex_host_name>

<TREX_GlOBAL>

Global file system for your TREX installation

  • On UNIX: <SAPGLOBALHOST>/sapmnt/<sapsid>/ SYS/profile

    For example: /usr/sap/<SAPSID>/SYS/profile

  • On Windows: <SAPGLOBALHOST>\sapmnt\<SAPSID>\ SYS\profile

    For example: <drive>:\usr\sap\<SAPSID>\SYS\ profile

<SAPSID>_TRX<instance_number>_<host>

TREX instance profile

The instance profile contains specific information about the runtime environment for a TREX instance.