Niagara 4.2 supports an
N4Supervisor running on Red Hat Enterprise Linux 7/CentOS distribution on a specific PC platform (contact your Tridium sales channel for
further PC platform details). This document provides installation details specific to this Linux
N4Supervisor. For related details on
Niagara 4 platform operation, see the Niagara Platform Guide section “Linux-based
N4Supervisor.”
NOTE: Note that the station running on a Linux
N4Supervisor is “owned” by a specially created user/group niagara:niagara, and therefore cannot bind to Linux “root owned” software ports 1-1024. This is not an issue for either of the conventional ports (secure: 5011, or non-secure: 3011)
used for a platform connection, but does affect the standard port used by the station’s WebService (Http Port), which cannot
be used at the default port (80) setting. In addition, other software ports potentially used by various drivers must be adjusted
above port 1024.
NOTE: Be aware that large Supervisor stations typically require more file descriptors than the default limit set for most distributions
allows. The situation may occur where you have many concurrently open files (histories, alarms, etc.) which causes the exception,
“Too many files open”. This simply means the file descriptor limit is set too low. Use means available to increase the limit
to a greater value.